MicroVAX 3100 Platform ------------------------------------------------------------ BA42-B Enclosure Maintenance Order Number: EK-A0511-MG.001 September 1992 This manual provides reference, installation, and maintenance information for the BA42-B enclosure. The MicroVAX 3100 Model 40, Model 80, and Model 90 systems use this enclosure. Revision Information: This is a revised manual. Digital Equipment Corporation Maynard, Massachusetts ------------------------------------------------------------ September 1992 The information in this document is subject to change without notice and should not be construed as a commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no responsibility for any errors that may appear in this document. No responsibility is assumed for the use or reliability of software on equipment that is not supplied by Digital Equipment Corporation or its affiliated companies. Restricted Rights: Use, duplication, or disclosure by the U.S. Government is subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013. © Digital Equipment Corporation 1992. All Rights Reserved. The postpaid Reader 's Comments forms at the end of this document request your critical evaluation to assist in preparing future documentation. The following are trademarks of Digital Equipment Corporation: DEC, Digital, MicroVAX, ThinWire, VAX DOCUMENT, VMS, and the DIGITAL logo. This document was prepared using VAX DOCUMENT, Version 2.1. ------------------------------------------------------------ Contents Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix 1 Enclosure Description 1.1 Mass Storage Device Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.2 Controls, Indicators, Ports, and Connectors . . . . . . . . . . . . . . . . . 1-3 1.3 Power and Signal Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 1.4 Air Circulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 1.5 Configuration Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 1.5.1 Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 1.5.1.1 Model 40 Memory Configurations . . . . . . . . . . . . . . . . . . 1-10 1.5.1.2 Model 80 Memory Configurations . . . . . . . . . . . . . . . . . . 1-12 1.5.1.3 Model 90 Memory Configurations . . . . . . . . . . . . . . . . . . 1-14 1.5.2 Communications Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16 1.5.3 Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20 2 Installation 2.1 Preparing the Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 2.1.1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 2.1.2 Additional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.1.3 Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 2.1.4 Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 2.1.5 Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 2.1.6 Temperature, Humidity, and Altitude Ranges . . . . . . . . . . . . 2-3 2.1.7 Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 2.2 Unpacking the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 2.3 Installing the BA42-B System . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 2.3.1 Placing the BA42-B Enclosure . . . . . . . . . . . . . . . . . . . . . . . . 2-7 2.3.2 Identifying the Ports and Connectors on the System Unit . . . 2-7 2.3.3 Connecting the Console Terminal . . . . . . . . . . . . . . . . . . . . . . 2-7 2.3.4 Connecting the ThinWire Terminator or Loopback Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10 iii 2.3.5 Connecting the System Unit Power Cord . . . . . . . . . . . . . . . . 2-13 2.3.6 Turning On the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14 3 Removing and Replacing FRUs 3.1 Removing the Enclosure Cover . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 3.2 Removing an MS44 or MS44L Memory Module . . . . . . . . . . . . . . 3-6 3.3 Removing an RZ-Series Disk Drive from the Upper Drive-Mounting Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10 3.3.1 Separating the Support Plate from an RZ23L, RZ24, or RZ24L Disk Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11 3.3.2 Separating the Mounting Bracket from an RZ25, RZ26, or RZ35 Disk Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13 3.3.3 Setting the SCSI ID on the Replacement Disk Drive . . . . . . . 3-14 3.4 Removing the Upper Drive-Mounting Shelf . . . . . . . . . . . . . . . . . 3-19 3.5 Removing an RZ-Series Disk Drive from the Lower Drive-Mounting Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21 3.6 Removing the RX26 Diskette Drive Assembly . . . . . . . . . . . . . . . 3-23 3.6.1 Removing the RX26 FDI/SCSI Board . . . . . . . . . . . . . . . . . . . 3-25 3.6.2 Separating the RX26 Diskette Drive from the Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26 3.6.3 Setting the SCSI ID on the Replacement RX26 FDI/SCSI Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27 3.7 Removing a TZ30 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29 3.7.1 Separating the TZ30 Tape Drive from the Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31 3.7.2 Setting the SCSI ID on the Replacement TZ30 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32 3.8 Removing a TZK10 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33 3.8.1 Separating the TZK10 Tape Drive from the Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-36 3.8.2 Setting the SCSI ID of the Replacement TZK10 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37 3.9 Removing a TLZ06 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-38 3.9.1 Separating the TLZ06 Tape Drive from the Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-41 3.9.2 Setting the SCSI ID and Option Switches of the Replacement TLZ06 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-42 3.10 Removing an RRD42 CD-ROM Drive . . . . . . . . . . . . . . . . . . . . . . 3-43 3.10.1 Separating the RRD42 CD-ROM Drive from the Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-46 3.10.2 Setting the SCSI ID on the Replacement RRD42 CD-ROM Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-47 iv 3.11 Removing the Upper and Lower Drive-Mounting Shelf Combination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-48 3.12 Removing the SCSI Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-51 3.13 Removing the DSW42 Synchronous Communications Option . . . 3-54 3.13.1 Removing the DSW42 Logic Board . . . . . . . . . . . . . . . . . . . . 3-55 3.13.2 Removing the DSW42 Input/Output Cable . . . . . . . . . . . . . . 3-56 3.13.3 Removing the DSW42 Input/Output Module . . . . . . . . . . . . . 3-57 3.14 Removing the DHW42 Asynchronous Communications Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-58 3.14.1 Removing the DHW42 Logic Board . . . . . . . . . . . . . . . . . . . . 3-59 3.14.2 Removing the DHW42 Input/Output Cable . . . . . . . . . . . . . . 3-60 3.14.3 Removing the DHW42 Input/Output Module . . . . . . . . . . . . . 3-61 3.15 Removing the CPU Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-63 3.16 Replacing the CPU Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-67 3.17 Removing the Power Supply Unit . . . . . . . . . . . . . . . . . . . . . . . . 3-70 A Pin Specifications for the Ports on the BA42-B System B Recommended Spare Parts List Glossary Index Figures 1-1 BA42-B Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1-2 Controls, Indicators, Ports, and Connectors . . . . . . . . . . . . . . 1-4 1-3 Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 1-4 Signal Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 1-5 Memory Expansion Connectors on the KA45 CPU Module . . 1-12 1-6 Memory Expansion Connectors on the KA47 CPU Module . . 1-14 1-7 Memory Expansion Connectors on the KA50 CPU Module . . 1-16 1-8 Communications Options in Model 40 and Model 80 Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18 1-9 Communications Options in Model 90 Systems . . . . . . . . . . . 1-19 1-10 Mass Storage Device Combinations in the BA42-B Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22 2-1 BA42-B Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 v 2-2 System Unit and Accessory Tray Contents . . . . . . . . . . . . . . . 2-6 2-3 Connecting the Console Terminal . . . . . . . . . . . . . . . . . . . . . . 2-9 2-4 Connecting the ThinWire Terminator to the System Unit . . . 2-11 2-5 Connecting the Standard Ethernet Loopback Connector to the System Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12 2-6 Connecting the Power Cord . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14 2-7 Turning On the System Unit . . . . . . . . . . . . . . . . . . . . . . . . . 2-15 3-1 Major FRUs in the BA42-B Enclosure . . . . . . . . . . . . . . . . . . 3-4 3-2 Removing the Enclosure Cover . . . . . . . . . . . . . . . . . . . . . . . 3-5 3-3 Memory Module Connectors on the KA45 or KA47 CPU Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 3-4 Memory Module Connectors on the KA50 CPU Module . . . . . 3-8 3-5 Removing a Memory Module . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 3-6 Removing RZ-Series Disk Drives from the Upper Drive-Mounting Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11 3-7 Separating the Support Plate from the Disk Drive . . . . . . . . 3-12 3-8 Separating the Mounting Bracket from the RZ25 Disk Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14 3-9 RZ23L Disk Drive SCSI ID Jumper Wire Locations . . . . . . . . 3-15 3-10 RZ24 Disk Drive SCSI ID Jumper Wire Locations . . . . . . . . . 3-16 3-11 RZ25 Disk Drive SCSI ID Jumper Wire Locations . . . . . . . . . 3-17 3-12 RZ26 Disk Drive SCSI ID Jumper Wire Locations . . . . . . . . . 3-18 3-13 RZ35 Disk Drive SCSI ID Jumper Wire Locations . . . . . . . . . 3-19 3-14 Removing the Upper Drive-Mounting Shelf . . . . . . . . . . . . . . 3-21 3-15 Removing an RZ-Series Disk Drive from the Lower Drive-Mounting Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23 3-16 Removing the RX26 Diskette Drive Assembly . . . . . . . . . . . . 3-25 3-17 Removing the RX26 FDI/SCSI Board . . . . . . . . . . . . . . . . . . . 3-26 3-18 Separating the Mounting Bracket from the RX26 Diskette Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27 3-19 Location of the SCSI ID Switches on the RX26 FDI/SCSI Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28 3-20 How to Reach the SCSI ID Switches on the RX26 FDI/SCSI Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29 3-21 Removing a TZ30 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . 3-30 3-22 Separating the Mounting Bracket from the TZ30 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32 3-23 TZ30 SCSI ID Switch Locations . . . . . . . . . . . . . . . . . . . . . . . 3-33 vi 3-24 Removing the TZK10 Tape Drive . . . . . . . . . . . . . . . . . . . . . . 3-35 3-25 Separating the Mounting Bracket from the TZK10 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-36 3-26 Locations of the SCSI ID Jumper Wires on the TZK10 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-38 3-27 Removing the TLZ06 Tape Drive . . . . . . . . . . . . . . . . . . . . . . 3-40 3-28 Separating the Mounting Bracket from the TLZ06 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-41 3-29 Locations of the SCSI ID and Option Switches on the TLZ06 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43 3-30 Removing the RRD42 CD-ROM Drive . . . . . . . . . . . . . . . . . . 3-45 3-31 Separating the Mounting Bracket from the RRD42 CD-ROM Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-46 3-32 RRD42 SCSI ID Jumper Wire Locations . . . . . . . . . . . . . . . . 3-48 3-33 Removing the Upper and Lower Drive-Mounting Shelf Combination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-50 3-34 Disconnecting the SCSI Cable . . . . . . . . . . . . . . . . . . . . . . . . 3-51 3-35 Separating the Upper Drive-Mounting Shelf from the Lower Drive-Mounting Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-52 3-36 Releasing the SCSI Cable Clamp (Model 40 and Model 80 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-53 3-37 Releasing the SCSI Cable (Model 90 Only) . . . . . . . . . . . . . . 3-54 3-38 Removing the DSW42 Logic Board . . . . . . . . . . . . . . . . . . . . 3-56 3-39 Removing the DSW42 Input/Output Cable . . . . . . . . . . . . . . 3-57 3-40 Removing the DSW42 Input/Output Module . . . . . . . . . . . . . 3-58 3-41 Removing the DHW42 Logic Board . . . . . . . . . . . . . . . . . . . . 3-60 3-42 Removing the DHW42 Input/Output Cable . . . . . . . . . . . . . . 3-61 3-43 Removing the DHW42 Input/Output Module . . . . . . . . . . . . . 3-62 3-44 Disconnecting the Cables from the CPU Module . . . . . . . . . . 3-64 3-45 Removing the CPU Module . . . . . . . . . . . . . . . . . . . . . . . . . . 3-66 3-46 Location and Orientation of the Ethernet ID ROM for Models 40 and 80 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-68 3-47 Location and Orientation of the Ethernet ID ROM for Model 90 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-69 3-48 Removing the Power Supply Unit . . . . . . . . . . . . . . . . . . . . . 3-71 A-1 Pin Specifications for the Ports on the BA42-B System . . . . . A-2 vii Tables 1-1 Functions of the Controls, Indicators, Ports, and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 1-2 Power Supply Unit dc Outputs . . . . . . . . . . . . . . . . . . . . . . . 1-7 1-3 Memory Configurations for the Model 40 System . . . . . . . . . 1-11 1-5 Memory Configurations for the Model 80 System . . . . . . . . . 1-13 1-5 Memory Configurations for the Model 90 System . . . . . . . . . 1-15 1-6 BA42-B Communications Options . . . . . . . . . . . . . . . . . . . . . 1-17 1-7 DSW42-AA Communications Interface Support . . . . . . . . . . . 1-17 1-8 BA42-B Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . . 1-20 2-1 Temperature, Humidity, and Altitude Ranges . . . . . . . . . . . . 2-4 2-2 BA42-B Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . 2-5 2-3 Terminal Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 3-1 Major FRUs in the BA42-B Enclosure . . . . . . . . . . . . . . . . . . 3-3 A-1 Asynchronous Port A and Port B Pin Specifications for the Eight-Data and 16-Data Line Options . . . . . . . . . . . . . . . . . . A-3 A-2 Asynchronous Port A and Port B Pin Specifications for the Eight-Modem Control Line Option . . . . . . . . . . . . . . . . . . . . . A-4 A-3 Pin Specifications for Synchronous Port 0 and Port 1 . . . . . . A-6 A-4 Pin Specifications for the External SCSI Connector . . . . . . . . A-9 B-1 Recommended Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1 viii ------------------------------------------------------------ Preface This manual provides the information that you need to maintain the BA42-B enclosure. It contains physical information about the enclosure, installation information, and procedures for replacing field replaceable units (FRUs). Audience This manual is for Digital(TM) Services personnel who provide support and maintenance for systems that use this enclosure. It is also for customers who have a self-maintenance agreement with Digital Equipment Corporation. Readers of this manual must have experience of replacing hardware components. Structure of This Manual This manual is divided into three chapters, two appendixes, a glossary, and an index: · Chapter 1 provides an overview of the system enclosure and describes the controls, mass storage areas and capacity, signal distribution, power distribution, input and output connections, and configuration guidelines. · Chapter 2 provides site preparation information and describes how to install the systems that use the enclosure. · Chapter 3 provides instructions on removing and replacing FRUs. ix · Appendix A gives the pin specifications for the ports on the back of the system unit. · Appendix B gives a list of the recommended spare parts. Associated Documents The following documents contain additional maintenance information for BA42-B enclosure systems: · Guide to MicroVAX(TM) 3100 Platform Maintenance Information Kit, EK-A0512-MG · KA45 CPU System Maintenance, EK-A0513-MG · KA47 CPU System Maintenance, EK-A0514-MG · KA50 CPU System Maintenance, EK-Axxxx-MG · CPU Reference Information, EK-A0574-HR · Options, EK-A0519-MG ------------------------------------------------------------ Note ------------------------------------------------------------ Figures in this document apply to Models 40, 80, and 90 unless stated otherwise. ------------------------------------------------------------ Related Documents The following documents contain more information about MicroVAX 3100 platform systems: · MicroVAX 3100 Model 40 and Model 80 Cover Letter, EK-A0517-CL · MicroVAX 3100 Model 40 and Model 80 Installation Information, EK-A0523-IN · MicroVAX 3100 Model 40 and Model 80 Operator Information, EK-A0524-UG · MicroVAX 3100 Model 40 and Model 80 Customer Technical Information, EK-A0525-TD · MicroVAX 3100 Model 40 and Model 80 Troubleshooting and Diagnostic Information, EK-A0518-TM · MicroVAX 3100 Model 90 Cover Letter, EK-A0517-CL x · MicroVAX 3100 Model 90 Installation Information, EK-A0523-IN · MicroVAX 3100 Model 90 Operator Information, EK-A0524-UG · MicroVAX 3100 Model 90 Customer Technical Information, EK-A0525-TD · MicroVAX 3100 Model 90 Troubleshooting and Diagnostic Information, EK-A0518-TM · VMS Factory Installed Software User Guide, EK-A0377-UG xi Conventions The following conventions are used in this manual: ------------------------------------------------------------ Convention Description ------------------------------------------------------------ Ctrl/x Ctrl/x indicates that you hold down the Ctrl key while you press another key or mouse button (indicated here by x). x A lowercase italic x indicates the generic use of a letter. For example, xxx indicates any combination of three alphabetic characters. italic type Italic type emphasizes important information, indicates variables, and indicates the complete titles of manuals. boldface type Boldface type in examples indicates user input. Boldface type in text indicates the first instance of terms defined either in the text, in the glossary, or both. nn nnn.nnn nn A space character separates groups of 3 digits in numerals with 5 or more digits. For example, 10 000 equals ten thousand. n.nn A period in numerals signals the decimal point indicator. For example, 1.75 equals one and three-fourths. Note A note contains information of special importance to the reader. Caution A caution contains information to prevent damage to the equipment. ------------------------------------------------------------ xii 1 ------------------------------------------------------------ Enclosure Description This chapter describes the BA42-B enclosure. It gives information on the following: · Mass storage device areas · Controls, indicators, ports, and connectors · Power and signal distribution · Air circulation · Configuration guidelines The BA42-B enclosure houses the system unit of the MicroVAX 3100 Model 40, Model 80, and Model 90 systems. It is a desktop style enclosure (see Figure 1-1). Enclosure Description 1-1 Enclosure Description Figure 1-1 BA42-B Enclosure 1-2 Enclosure Description Enclosure Description 1.1 Mass Storage Device Areas The BA42-B enclosure can contain 3.5 inch (13.5 cm) and 5.25 inch (20.25 cm) half-height mass storage devices. These mass storage devices are mounted on two drive-mounting shelves. The upper drive-mounting shelf can contain one, two, or three disk drives. The lower drive-mounting shelf can contain one or two devices, that is, disk drives or removable media devices. See Section 1.5.3 for information about mass storage device combinations and orientation. 1.2 Controls, Indicators, Ports, and Connectors The power OK indicator (POK) is on the front of the BA42-B enclosure. Figure 1-2 shows the controls, indicators, ports, and connectors on the BA42-B enclosure. Table 1-1 describes the functions of the controls, indicators, ports, and connectors. Enclosure Description 1-3 Enclosure Description Figure 1-2 Controls, Indicators, Ports, and Connectors 1-4 Enclosure Description Enclosure Description Table 1-1 Functions of the Controls, Indicators, Ports, and Connectors ------------------------------------------------------------ Component Description ------------------------------------------------------------ On/Off switch Applies and stops the power to the system unit as follows: · On ( | ) --Applies the ac power to the system unit · Off (O) --Stops the ac power to the system unit System ac power socket A socket for the ac power input. SCSI 1 port A port that allows you to connect external SCSI devices. Synchronous communi- cations ports (0,1) 2 Two ports that allow you to connect devices that have synchronous communications support. Asynchronous communi- cations ports (A,B) 2 One or two ports that provide one of the following asynchronous communications expansion options: · Eight DEC423 compatible asynchronous ports · Sixteen DEC423 compatible asynchronous ports · Eight EIA-232 compatible modem ports MMJ 3 port 0 DEC423 compatible asynchronous port. On models 40 and 80, this port is the primary console port. On model 90, this is the standard terminal port. MMJ port 1 DEC423 compatible asynchronous port. MMJ port 3 DEC423 compatible asynchronous port. For models 48 and 80, this port functions as an alternate console port when the break/enable switch is set in the up position when you turn on the system unit. For model 90, this port is the primary console port. Asynchronous modem control port (2) EIA-232 compatible asynchronous port with modem control. Halt push button A momentary-contact push button that puts the system in console mode. ------------------------------------------------------------ 1 Small computer system interface (SCSI). 2 Optional ports that depend on the system configuration. 3 Modified modular jack (MMJ). (continued on next page) Enclosure Description 1-5 Enclosure Description Table 1-1 (Cont.) Functions of the Controls, Indicators, Ports, and Connectors ------------------------------------------------------------ Component Description ------------------------------------------------------------ Break/enable switch 4 A two-position switch that determines the function of MMJ port 3 as follows: · Up position--On models 40 and 80, MMJ port 3 functions as a console port. On model 90, this enables the Break key. In this state, you can press the Break key on the keyboard of a terminal connected to MMJ port 3 to put the system in console mode. · Down position--On models 40 and 80, MMJ port 3 functions as a normal communications port and MMJ port 0 functions as a console port. On model 90, this disables the Break key. Break/enable LED A LED 5 indicates the position of the Break Enable switch as follows: · On--On models 40 and 80, MMJ port 3 functions as a console port. On model 90, this enables the Break key. In this state, you can press the Break key on the keyboard of a terminal connected to MMJ port 3 to put the system in console mode. · Off--On models 40 and 80, MMJ port 3 functions as a normal communications port and MMJ port 0 functions as a console port. On model 90, this disables the Break key. LED display A set of eight LEDs that provides power-up and self- test diagnostic code information. This is useful for fault diagnosis when the console terminal is not functioning. LEDs five and six on not used for the model 90. Standard Ethernet port A port that allows you to connect the system to a standard Ethernet network. Ethernet switch A two-position switch that determines the type of Ethernet that the system uses as follows: · Left position--selects the standard Ethernet type · Right position--selects the ThinWire(TM) Ethernet type ------------------------------------------------------------ 4 The system recognizes the position of this switch only when you turn on the power. 5 Light emitting diode (LED). (continued on next page) 1-6 Enclosure Description Enclosure Description Table 1-1 (Cont.) Functions of the Controls, Indicators, Ports, and Connectors ------------------------------------------------------------ Component Description ------------------------------------------------------------ ThinWire Ethernet port A port that allows you to connect the system to a ThinWire Ethernet network. ------------------------------------------------------------ 1.3 Power and Signal Distribution The power supply unit (30-35042-01) provides power to all the units in the enclosure. It accepts alternating current (ac) input voltage in the ranges 110 V ac to 120 V ac (88 V rms 1 to 132 V rms) and 220 V ac to 240 V ac (176 V rms to 264 V rms). The regulators in the power supply unit maintain the correct direct current (dc) output voltages, which are independent of the fluctuations in the ac input power. The power supply unit can provide a continuous power output of 166 watts (W). The power supply unit has two internal, variable speed, automatically adjusting fans that cool the unit while it operates. Table 1-2 gives the current specifications of the dc circuits. Table 1-2 Power Supply Unit dc Outputs ------------------------------------------------------------ Voltage (dc) Output Current Range in Amperes (dc) Minimum Maximum (A 1 ) (A) ------------------------------------------------------------ +5.1 3.8 15.0 +12.1 0.18 7.1 -12.0 0.3 1.0 -9.0 0.0 0.2 +3.3 0.0 3.5 ------------------------------------------------------------ 1 Amperes (A). ------------------------------------------------------------ The power supply unit (30-35042-01) has the following output connectors: · A flying lead connector that provides the dc power to the central processing unit (CPU) module · One connector on the side of the power supply unit that provides the dc power to the devices on the upper drive-mounting shelf ------------------------------------------------------------ 1 Root mean square. Enclosure Description 1-7 Enclosure Description · One connector on the side of the power supply unit that provides the dc power to the devices on the lower drive-mounting shelf · One connector that provides a 3.3 V dc output (Model 80 systems only). Figure 1-3 shows the distribution of power in the BA42-B enclosure. Figure 1-3 Power Distribution 1-8 Enclosure Description Enclosure Description Appendix A provides information on the pin specifications for the connectors. The CPU module is the main source for signal distribution in a BA42-B enclosure system. The SCSI cable is connected to the CPU module. Each of the other connectors on the SCSI cable has a pull-tab. Use the pull-tab to disconnect the cable from a SCSI device. Each pull-tab has a number that identifies the drive to which the SCSI cable connector is connected (see Figure 1-4). Figure 1-4 Signal Distribution Enclosure Description 1-9 Enclosure Description 1.4 Air Circulation The power supply unit (30-35042-01) contains two fans. These fans provide the air circulation for the enclosure. The fans adjust their speed automatically as the temperature of the system unit changes. The air intake is on the right side of the BA42-B enclosure (when viewed from the front), and the air exhaust is on the left side. A typical value of airflow is 0.0104 cubic meters per second (m³/sec) (22 cubic feet per minute [ft³/min]). 1.5 Configuration Guidelines The combination of memory, communications options, and internal mass storage devices determines the configuration of a system. See the KA45 CPU System Maintenance manual, the KA47 CPU System Maintenance manual, or the KA50 CPU System Maintenance manual for a list of the external mass storage devices that a MicroVAX 3100 platform system supports. 1.5.1 Memory The MicroVAX 3100 Model 40, Model 80, and Model 90 systems have different memory configurations. 1.5.1.1 Model 40 Memory Configurations In the Model 40, the basic system memory is 8M bytes. This memory is permanently fixed to the CPU module. You can expand the memory in the system in 8M-byte increments by adding MS44-BA or MS44L-BA memory options. Each MS44-BA memory option consists of two MS44-AA (4M-byte) memory modules. Each MS44L-BA memory option consists of two MS44L-AA (4M-byte) memory modules. Table 1-3 lists the memory configurations for a Model 40 system. Figure 1-5 shows the location of the memory expansion connectors on the KA45 CPU module. 1-10 Enclosure Description Enclosure Description Table 1-3 Memory Configurations for the Model 40 System ------------------------------------------------------------ Total Onboard Increment 1 ------------------------------------------------------------ Increment 2 ------------------------------------------------------------ Increment 3 ------------------------------------------------------------ Memory Memory 1H 1 1L 2H 2L 3H 3L (bytes) (bytes) ------------------------------------------------------------ 8M 8M 16M 8M MS44-AA 2 MS44-AA 24M 8M MS44-AA MS44-AA MS44-AA MS44-AA 32M 8M MS44-AA MS44-AA MS44-AA MS44-AA MS44-AA MS44-AA ------------------------------------------------------------ 1 1H, 1L, 2H, 2L, 3H, 3L are connector identifiers (see Figure 1-5). 2 The MS44-AA memory module is a 4M-byte memory module. Each MS44L-BA memory option consists of two MS44L-AA memory modules. You can use MS44L-AA memory modules in place of MS44-AA memory modules. ------------------------------------------------------------ Enclosure Description 1-11 Enclosure Description Figure 1-5 Memory Expansion Connectors on the KA45 CPU Module 1.5.1.2 Model 80 Memory Configurations In the Model 80, the basic system memory is 8M bytes. This memory is contained on two MS44-AA or MS44L-AA modules installed on the KA47 CPU module. You can expand the system memory in 8M-byte or 32M-byte increments by adding MS44-BA, MS44L-BA or MS44-DA memory options. An MS44-BA memory option consists of two MS44-AA (4M-byte) memory modules. An MS44L-BA memory option consists of two MS44L-AA (4M-byte) memory modules. An MS44-DA memory option consists of two MS44-CA (16M-byte) memory modules. Table 1-5 lists the memory configurations for Model 80 systems. Figure 1-6 shows the locations of the memory expansion connectors on the KA47 CPU module. 1-12 Enclosure Description Enclosure Description Table 1-5 Memory Configurations for the Model 80 System ------------------------------------------------------------ Total Increment 1 1 ------------------------------------------------------------ Increment 2 ------------------------------------------------------------ Increment 3 ------------------------------------------------------------ Memory 1H 2 1L 2H 2L 3H 3L (bytes) ------------------------------------------------------------ 8M MS44-AA 3 MS44-AA 16M MS44-AA MS44-AA MS44-AA MS44-AA 24M MS44-AA MS44-AA MS44-AA MS44-AA MS44-AA MS44-AA 40M MS44-AA MS44-AA MS44-CA 4 MS44-CA 48M MS44-AA MS44-AA MS44-AA MS44-AA MS44-CA MS44-CA 72M MS44-AA MS44-AA MS44-CA MS44-CA MS44-CA MS44-CA ------------------------------------------------------------ 1 Basic system memory. 2 1H, 1L, 2H, 2L, 3H, 3L are connector identifiers (see Figure 1-6). 3 The MS44-AA memory module is a 4M-byte memory module. The MS44-BA memory option consists of two MS44-AA memory modules. You can use MS44L-AA memory modules in place of MS44-AA memory modules. 4 The MS44-CA memory module is a 16M-byte memory module. The MS44-DA memory option consists of two MS44-CA memory modules. ------------------------------------------------------------ Enclosure Description 1-13 Enclosure Description Figure 1-6 Memory Expansion Connectors on the KA47 CPU Module 1.5.1.3 Model 90 Memory Configurations In the Model 90, the basic system memory is 16M bytes. This memory is contained on four MS44L-AA modules installed on the KA50 CPU module. You can expand the system memory in 16M-byte or 64M-byte increments by adding MS44L-BC or MS44-DC memory options. An MS44L-BC memory option consists of MS44L-AA (4M-byte) memory modules. An MS44-DC memory option consists of four MS44-CA (16M-byte) memory modules. Table 1-5 lists the memory configurations for Model 90 systems. Figure 1-6 shows the locations of the memory expansion connectors on the KA50 CPU module. 1-14 Enclosure Description Enclosure Description Table 1-5 Memory Configurations for the Model 90 System ------------------------------------------------------------ Total Increment 1 1 ------------------------------------------------------------ Increment 2 ------------------------------------------------------------ Memory (0A + 0B + 0C + 0D) 2 (1E + 1F + 1G + 1H) 2 (bytes) ------------------------------------------------------------ 16M MS44L-BC 32M MS44L-BC MS44L-BC 64M MS44-DC 80M MS44-DC MS44L-BC 128M MS44-DC MS44-DC ------------------------------------------------------------ 1 Basic system memory. 2 0A, 0B, 0C, 0D, 1E, 1F, 1G, and 1H are connector identifiers (see Figure 1-6). ------------------------------------------------------------ Enclosure Description 1-15 Enclosure Description Figure 1-7 Memory Expansion Connectors on the KA50 CPU Module 1.5.2 Communications Options Table 1-6 lists the communications options that a BA42-B enclosure can contain. 1-16 Enclosure Description Enclosure Description Table 1-6 BA42-B Communications Options ------------------------------------------------------------ Option Name Description ------------------------------------------------------------ Asynchronous Options ------------------------------------------------------------ DHW42-AA Provides eight DEC423 asynchronous lines DHW42-BA Provides 16 DEC423 asynchronous lines DHW42-CA Provides eight EIA-232 asynchronous modem lines DHW42-UP Eight to 16 DEC423 asynchronous line upgrade ------------------------------------------------------------ Synchronous Options ------------------------------------------------------------ DSW42-AA 1 Provides two EIA-232/V.24 synchronous lines ------------------------------------------------------------ 1 This option is supplied with two external cables that support the EIA-232/V.24 interface. ------------------------------------------------------------ The DSW42-AA option also supports the communications interfaces listed in Table 1-7, but you must order the external cable separately. Table 1-7 DSW42-AA Communications Interface Support ------------------------------------------------------------ Communications Interface External Cable ------------------------------------------------------------ EIA-423/V.10 BC19E-02 EIA-422/V.11 BC19B-02 ------------------------------------------------------------ Each communications option contains three field replaceable units (FRUs) that are installed in the enclosure as follows: · A logic board The logic board connects directly to the CPU module. · An input/output cable The input/output cable connects the CPU module to the input/output module. · An input/output module The input/output module is a snap-fit assembly that is attached to the inside of the back panel of the BA42-B enclosure. Enclosure Description 1-17 Enclosure Description The communications options logic boards have different locations in the BA42-B enclosure, depending on the model number of the system, as follows: · In Model 40 and Model 80 systems, the DHW42 logic board is located to the right of the CPU Module, with the DSW42 logic board logic board located to its left (see Figure 1-8). · In Model 90 systems, the DHW42 logic board is located to the left of the CPU Module, with the DSW42 logic board logic board located to its right (see Figure 1-9). Figure 1-8 Communications Options in Model 40 and Model 80 Systems 1-18 Enclosure Description Enclosure Description Figure 1-9 Communications Options in Model 90 Systems Enclosure Description 1-19 Enclosure Description 1.5.3 Mass Storage Devices Table 1-8 lists the mass storage devices that the BA42-B enclosure can contain. Table 1-8 BA42-B Mass Storage Devices ------------------------------------------------------------ Option Name Description Size 1 Capacity (in) ------------------------------------------------------------ RZ23L Disk drive 3.5 120M bytes RZ24 Disk drive 3.5 209M bytes RZ24L Disk drive 3.5 245M bytes RZ25 Disk drive 3.5 400M bytes RZ26 Disk drive 3.5 1.05 Gigabytes (G bytes) RZ35 Disk drive 3.5 852M bytes TZ30 2 Tape drive 5.25 95M byte cartridge TZK10 2 Tape drive 5.25 Range of cartridges 3 TLZ06 2 Tape drive 5.25 Range of cassettes 4 RX26 2 Diskette drive 3.5 Range of diskettes 5 RRD42 2 CD-ROM 5 drive 5.25 600M byte CD-ROM ------------------------------------------------------------ 1 Size of half-height device. 2 Removable media device. 3 Supports 320M byte and 525M byte cartridges. 4 Supports 60 metre (m) and 90 m cassettes 5 Supports 1.4M byte and 2.8M byte diskettes. ------------------------------------------------------------ The BA42-B enclosure has two drive-mounting shelves for mass storage devices as follows: · Upper drive-mounting shelf The upper drive-mounting shelf can contain one, two, or three disk drives. · Lower drive-mounting shelf The lower drive-mounting shelf can contain one or two devices. These devices are either disk drives or removable media devices. 1-20 Enclosure Description Enclosure Description Figure 1-10 shows the combinations of mass storage devices in a BA42-B enclosure. Enclosure Description 1-21 Enclosure Description Figure 1-10 Mass Storage Device Combinations in the BA42-B Enclosure ------------------------------------------------------------ ------------------------------------------------------------ Upper Drive­Mounting ShelfRZ* ------------------------------------------------------------ RZ* ------------------------------------------------------------ RZ* ------------------------------------------------------------ ------------------------------------------------------------ ------------------------------------------------------------ ------------------------------------------------------------ Upper Drive­Mounting ShelfRZ* ------------------------------------------------------------ RZ*RRD42 or TZK10 or TLZ06 or RX26RRD42 or TZK10 or TLZ06 or TZ30 or RX26Note: RZ* denotes RZ23L, RZ24, RZ24L, RZ25 or RZ26 disk drives.Left­hand compartmentRight­hand compartmentGA_EN00187D_92A 2 ------------------------------------------------------------ Installation This chapter describes how to install a BA42-B system. It gives information on the following: · Preparing the site · Unpacking the system · Installing a BA42-B system 2.1 Preparing the Site Before you unpack the BA42-B system, verify the physical, environmental, and electrical requirements described in this section. 2.1.1 Dimensions Figure 2-1 shows the dimensions of the BA42-B enclosure. ------------------------------------------------------------ Caution ------------------------------------------------------------ The container and enclosure together typically weigh 20.50 kilograms (kg) (45 pounds [lb]). Two people are required to handle the container. ------------------------------------------------------------ Installation 2-1 Installation Figure 2-1 BA42-B Dimensions The dimensions of the container are as follows: · Height = 35.3 cm (14.0 inches) · Width = 61.1 cm (24.0 inches) · Depth = 51.0 cm (20.0 inches) 2.1.2 Additional Equipment When you are installing additional equipment, follow these guidelines: · Make sure that there is sufficient space for the terminals and other peripheral equipment. · Make sure that you keep the mass storage devices in an area that has the same temperature and humidity as the computer area (see Table 2-1). · When you plan the cable routing for multiple-terminal systems, consider factors such as safety, convenience, future expansion, and cost. Label and install the cables before you install the system. 2-2 Installation Installation 2.1.3 Operating Environment Computer systems in office areas are subject to electrostatic discharge (ESD), temperature changes, and humidity. To install the system in the correct environment, follow these guidelines: · Install the system in a well-ventilated area where the temperature and humidity ranges listed in Table 2-1 are maintained during the year. · Do not place a system near heating or cooling devices, large windows, or doors that open to the outside. Rapid changes of temperature can affect the performance of the system. · Place the system in an area where the air contains a minimum of dust and other abrasive contaminants. 2.1.4 Electrostatic Discharge ESD can cause system failures and loss of data. To minimize the build up of static electricity, follow these guidelines: · Maintain a relative humidity level of at least 40%. · Place the system away from busy corridors. · Carpet in the computer area is not recommended. However, if you want to use carpet, antistatic carpet is recommended. When carpet is already in use, put an antistatic mat under the system. 2.1.5 Heat Dissipation The heat dissipated by a BA42-B enclosure system depends on the model number of the system, but is typically 410 British thermal units/hour (Btu/h). 2.1.6 Temperature, Humidity, and Altitude Ranges Table 2-1 gives the operating, nonoperating, and storage ranges for the temperature, humidity, and altitude for BA42-B enclosure systems. Installation 2-3 Installation Table 2-1 Temperature, Humidity, and Altitude Ranges ------------------------------------------------------------ Parameter Operating Range 1 Nonoperating Range Storage Range ------------------------------------------------------------ Temperature 10°C to 40°C -40°C to 66°C 5°C to 50°C (50°F to 104°F) (-40°F to 151°F) (41°F to 122°F) Relative humidity 2 10% to 90% 10% to 95% 2 10% to 95% Altitude 2400 m maximum 4900 m maximum (8000 ft maximum) (16 000 ft maximum) Rate of change of temperature 11°C per hour maximum (20°F per hour maximum) ------------------------------------------------------------ 1 For operation above sea level, decrease the operating temperature by 1.8°C per 1000 m (or 1°F per 1000 ft). 2 At a temperature of 66°C. ------------------------------------------------------------ 2-4 Installation Installation 2.1.7 Electrical Requirements The power source to which the system connects must be capable of providing power to the system unit and any other additional equipment, such as local terminals and expansion boxes. Digital(TM) recommends that each system operates in a dedicated power circuit. Additional power equipment may be required to avoid power interruptions. Table 2-2 lists the electrical requirements of systems in BA42-B enclosures. The power supply unit in the system is autosensing. You do not have to select the input voltage. Table 2-2 BA42-B Electrical Requirements ------------------------------------------------------------ Parameter Values ------------------------------------------------------------ Nominal voltages 110 V ac or 220 V ac Voltage ranges 100 V ac to 120 V ac (88 V rms 1 to 132 V rms) and 220 V ac to 240 V ac (176 V rms to 264 V rms) Power source phase Single Nominal frequencies 50 Hz 2 or 60 Hz Frequency range 47 Hz to 63 Hz Maximum running current 1.2 A for 110 V ac systems and 0.6 A for 220 V ac systems Steady state current 1.0 A for 110 V ac systems and 0.5 A for 220 V ac systems Maximum inrush current 32 A Maximum power consumption 120 W ------------------------------------------------------------ 1 Root mean square (rms). 2 Hertz (Hz). ------------------------------------------------------------ 2.2 Unpacking the System Open the container. Remove the box and the accessory tray. The box contains the system unit. The accessory tray contains the following: · Customer Hardware Information Kit · VMS Factory Installed Software User Guide · Software licenses · Power cord · Other accessories Installation 2-5 Installation Expansion boxes are supplied in separate containers. Figure 2-2 System Unit and Accessory Tray Contents Depending on the system configuration, the contents of the container may differ from the items shown in Figure 2-2. When unpacking the system, do the following: 1. Check the contents of the container against the packing slip. 2. Store the unused parts for future use. Depending on how you set up the system, you may not use all the components supplied with the system. Always repack the system unit in its original packing material when moving or relocating the system. This precaution protects the system from damage. 2-6 Installation Installation 2.3 Installing the BA42-B System Install the BA42-B enclosure according to the instructions in the following subsections. 2.3.1 Placing the BA42-B Enclosure After you unpack the system, move the BA42-B enclosure to the location from which it will operate. Place the enclosure so that it satisfies the following space requirements: · Allow 5 cm (2 inches approximately) of clearance on each side of the enclosure for ventilation. · Allow 10 cm (4 inches approximately) of clearance on the back of the enclosure for the connection of cables. · Allow 20 cm (8 inches approximately) of clearance on the front of the enclosure so that you can reach the removable media devices, depending on the system configuration. 2.3.2 Identifying the Ports and Connectors on the System Unit Figure 1-2 shows the ports and connectors in a BA42-B enclosure system. Section 1.2 describes the functions of the controls, indicators, ports, and connectors in a BA42-B enclosure system. 2.3.3 Connecting the Console Terminal To connect a console terminal to a BA42-B enclosure, follow these steps: 1. Make sure that the on/off switch on the terminal is in the off position. 2. Set the communication parameters of the terminal (see Table 2-3). Table 2-3 Terminal Settings ------------------------------------------------------------ Feature Setting ------------------------------------------------------------ Terminal mode VTnnn-7bit Transmit speed 9600 baud Receive speed receive = transmit Character format 8 bits, no parity Stop bits 1 Comm1 port DEC-423 (data-leads-only) ------------------------------------------------------------ Installation 2-7 Installation See the terminal documentation if you want more information on setting up the terminal. ------------------------------------------------------------ Note ------------------------------------------------------------ If you connect the terminal cable to one of the MMJ ports on the back of a VT3xx terminal, you must set the port so that it can operate as a DEC423 port. See the terminal documentation for more information. ------------------------------------------------------------ 3. Connect the terminal cable supplied with the system (see Figure 2-2) to MMJ port 3 on the back of the system unit (see Figure 2-3). Connect the other end of the console cable to a DEC423 port on the terminal. You may remove the label covering MMJ ports 0 and 1. 4. If the terminal has EIA-232 ports only, connect the EIA-232 to DEC423 adapter to the EIA-232 port on the terminal. Then connect the terminal cable to the EIA-232 to DEC423 adapter. ------------------------------------------------------------ Note ------------------------------------------------------------ Some terminal cables have an earth drain wire. You must connect this earth drain wire to the grounding pillar above MMJ port 1, using the screw provided with the cable. ------------------------------------------------------------ 2-8 Installation Installation Figure 2-3 Connecting the Console Terminal Installation 2-9 Installation 2.3.4 Connecting the ThinWire Terminator or Loopback Connector You can connect BA42-B systems to either a ThinWire Ethernet network or to a standard Ethernet network. To test the Ethernet circuitry in the system unit before you connect to a network, install either the ThinWire terminator or the standard Ethernet loopback connector. The ThinWire terminator and the standard Ethernet loopback connector are supplied with BA42-B systems (see Figure 2-2). The ThinWire terminator consists of a T-connector and two terminators. The standard Ethernet loopback connector is a single unit. You choose the network type using the Ethernet switch on the back of the system unit (see Figure 1-2). The switch settings for the network types are as follows: · Left position--standard Ethernet · Right position--ThinWire Ethernet When you want to use a ThinWire Ethernet network, follow these steps: 1. Set the Ethernet switch to the right position. 2. To form a ThinWire terminator, connect the two terminators (see Figure 2-4) to the T-connector. 3. Connect the ThinWire terminator to the ThinWire Ethernet port on the back of the system unit turning the barrel connector clockwise until it locks (see Figure 2-4). 2-10 Installation Installation Figure 2-4 Connecting the ThinWire Terminator to the System Unit Installation 2-11 Installation If you want to use a standard Ethernet network, follow these steps: 1. Set the Ethernet switch to the left position. 2. Connect the standard Ethernet loopback connector to the standard Ethernet port on the back of the system unit (see Figure 2-5). Figure 2-5 Connecting the Standard Ethernet Loopback Connector to the System Unit 2-12 Installation Installation 2.3.5 Connecting the System Unit Power Cord A BA42-B enclosure system accepts 100 V ac to 120 V ac at 50 Hz or 60 Hz, or 220 V ac to 240 V ac at 50 Hz or 60 Hz. The power supply unit is self-sensing. You do not have to select the input voltage. To connect the system unit power cord, follow these steps: 1. Set the on/off switch on the back of the system unit to the off (O) position. 2. Connect the power cord, supplied with the system (see Figure 2-2), to the ac power socket on the back of the system unit (see Figure 2-6). 3. Connect the other end of the power cord to a grounded power outlet. Installation 2-13 Installation Figure 2-6 Connecting the Power Cord 2.3.6 Turning On the System To turn on the system, follow these steps: 1. Set the on/off switch on the terminal to the on position. 2. Set the on/off switch on the system unit to the on ( | ) position (see Figure 2-7). 2-14 Installation Installation Figure 2-7 Turning On the System Unit See the KA45 CPU System Maintenance manual, the KA47 CPU System Maintenance manual, or the KA47 CPU System Maintenance manual for information about the self-tests that run when you turn on the system. Installation 2-15 3 ------------------------------------------------------------ Removing and Replacing FRUs This chapter describes how to remove and replace the FRUs in the BA42-B enclosure. It gives information on the following: · Removing the enclosure cover · Removing an MS44 or MS44L memory module · Removing an RZ-series disk drive from the upper drive-mounting shelf · Removing the upper drive-mounting shelf · Removing an RZ-series disk drive from the lower drive-mounting shelf · Removing an RX26 diskette drive assembly · Removing a TZ30 tape drive · Removing a TZK10 tape drive · Removing a TLZ06 tape drive · Removing an RRD42 CD-ROM drive · Removing the upper and lower drive-mounting shelf combination · Removing the SCSI cable · Removing a DSW42 synchronous communications option · Removing a DHW42 asynchronous communications option · Removing the CPU module · Replacing the CPU module · Removing the power supply unit ------------------------------------------------------------ Note ------------------------------------------------------------ Unless otherwise specified, you can replace an FRU by reversing the steps described in the removal procedure. ------------------------------------------------------------ Removing and Replacing FRUs 3-1 Removing and Replacing FRUs Table 3-1 lists the major FRUs in the BA42-B enclosure. It also gives the order numbers for the FRUs and a reference to a section in this chapter that gives information on how to replace the FRU. See the Options manual for more information about options. Appendix B gives a complete list of the spare parts for the BA42-B enclosure. Figure 3-1 shows the locations of the major FRUs in the BA42-B enclosure. ------------------------------------------------------------ Caution ------------------------------------------------------------ · Disconnect the power supply before removing or installing FRUs. · Only qualified personnel should remove or install the FRUs. · Static electricity can damage integrated circuits. Wear a wrist strap and place an antistatic mat under the system unit when working with the internal parts of the system unit. ------------------------------------------------------------ You must have the following tools to replace the FRUs in a MicroVAX 3100 platform system: · A number 1, Philips screwdriver · A flat screwdriver 3-2 Removing and Replacing FRUs Removing and Replacing FRUs Table 3-1 Major FRUs in the BA42-B Enclosure ------------------------------------------------------------ FRU Order Numbers Section ------------------------------------------------------------ Memory module MS44-AA, MS44L-AA, MS44-CA 3.2 Disk drive RZ23L-E 3.3, 3.5 Disk drive RZ24-E 3.3, 3.5 Disk drive RZ24L-E 3.3, 3.5 Disk drive RZ25-E 3.3, 3.5 Disk drive RZ26-E 3.3, 3.5 Disk drive RZ35-E 3.3, 3.5 Diskette drive RX26-AA 3.6 Tape drive TZ30-AX 3.7 Tape drive TZK10-AA 3.8 Tape drive TLZ06-AA 3.9 CD-ROM drive RRD42-AA 3.10 Synchronous communications option DSW42-AA 3.13 Asynchronous communications option DHW42-AA, -BA, -CA 3.14 KA45 CPU module 1 54-20654-01 3.15 KA47 CPU module 2 54-20652-01 3.15 KA50 CPU module 3 54-21797-01 3.15 Power supply unit 30-35042-01 3.17 ------------------------------------------------------------ 1 Model 40 CPU module only 2 Model 80 CPU module only 3 Model 90 CPU module only ------------------------------------------------------------ Removing and Replacing FRUs 3-3 Removing and Replacing FRUs Figure 3-1 Major FRUs in the BA42-B Enclosure 3-4 Removing and Replacing FRUs Removing and Replacing FRUs 3.1 Removing the Enclosure Cover To remove the enclosure cover, follow these steps: 1. Set the on/off switch on the system unit to the off (O) position. 2. Disconnect the cables, loopback connectors, and terminators that are connected to the system unit. 3. Loosen the two captive screws (12-30338-05) on the back of the system unit (see Figure 3-2). 4. Slide the cover forward and lift it up from the system unit. Figure 3-2 Removing the Enclosure Cover Removing and Replacing FRUs 3-5 Removing and Replacing FRUs 3.2 Removing an MS44 or MS44L Memory Module To remove a memory module, follow these steps: 1. Remove the enclosure cover (see Section 3.1). ------------------------------------------------------------ Caution ------------------------------------------------------------ Static electricity can damage integrated circuits. Wear a wrist strap and place an antistatic mat under the system unit when working with the internal parts of the system unit. ------------------------------------------------------------ 2. Locate the faulty memory module. Figure 3-3 shows the location of the memory module connectors on the KA45 or KA47 CPU module. Figure 3-4 shows the location of the memory module connectors on the KA50 CPU module. ------------------------------------------------------------ Note ------------------------------------------------------------ · Note the position of the faulty memory module on the CPU module. You must install a replacement in this position. · You may have to remove one or two memory modules to reach the faulty memory module. Note carefully the position of each memory module you remove. ------------------------------------------------------------ 3-6 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-3 Memory Module Connectors on the KA45 or KA47 CPU Module Removing and Replacing FRUs 3-7 Removing and Replacing FRUs Figure 3-4 Memory Module Connectors on the KA50 CPU Module 3. Push the metal board clips on the memory module connector away from the center. Tilt the memory module towards the back of the enclosure, and lift the memory module out of its connector (see Figure 3-5). ------------------------------------------------------------ Caution ------------------------------------------------------------ When installing a memory module, note that the connectors on the CPU module are keyed so that you cannot install the memory module with an incorrect orientation. Do not try to force a module into a connector with an incorrect orientation. ------------------------------------------------------------ 3-8 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-5 Removing a Memory Module Removing and Replacing FRUs 3-9 Removing and Replacing FRUs 3.3 Removing an RZ-Series Disk Drive from the Upper Drive-Mounting Shelf Depending on the system configuration, the upper drive-mounting shelf can contain one, two, or three disk drives. The disk drives can be any combination of the RZ-series disk drives. The RZ-series disk drives include the following devices: · RZ23L disk drive · RZ24 disk drive · RZ24L disk drive · RZ25 disk drive · RZ26 disk drive · RZ35 disk drive You can remove a disk drive from the enclosure without removing the upper drive-mounting shelf from the enclosure. To remove an RZ-series disk drive from the upper drive-mounting shelf, follow these steps: 1. Remove the enclosure cover (see Section 3.1). ------------------------------------------------------------ Note ------------------------------------------------------------ · You can disconnect the cables from a disk drive more easily after you remove the disk drive from the drive-mounting shelf. · When disconnecting cables, you must note which cables connect to which drives. On the SCSI cable, note the number on the connector pull-tab. ------------------------------------------------------------ 2. Press and hold the spring clip that locks the disk drive in position. 3. Push the disk drive towards the spring clip until the rubber grommets under the disk drive are released from the cutouts in the drive-mounting shelf (see Figure 3-6). Lift the disk drive up from the drive-mounting shelf and release the spring clip. 3-10 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-6 Removing RZ-Series Disk Drives from the Upper Drive-Mounting Shelf 4. Disconnect the SCSI cable from the back of the disk drive by pulling the pull-tab. Figure 1-4 shows the signal cables in the BA42-B enclosure. 5. Disconnect the power cable from the back of the disk drive. Figure 1-3 shows the power cables in the BA42-B enclosure. 3.3.1 Separating the Support Plate from an RZ23L, RZ24, or RZ24L Disk Drive When you are replacing an RZ23L, RZ24, or RZ24L disk drive, you must remove the support plate (74-41364-01) and the rubber grommets (12-31734- 01) that are attached to the faulty disk drive (RZ23L-E, RZ24-E, or RZ24L-E) and install these items on the replacement drive. The following procedure describes how to remove the support plate and rubber grommets from an RZ23L disk drive. The procedure for removing the support plate and rubber grommets from an RZ24 or RZ24L disk drive is the same. To remove the Removing and Replacing FRUs 3-11 Removing and Replacing FRUs support plate and rubber grommets from an RZ23L disk drive, follow these steps: 1. Position the disk drive so that the bottom of the disk drive faces up. 2. Remove the four screws and attached grommets (see Figure 3-7). These screws secure the support plate to the disk drive. Figure 3-7 Separating the Support Plate from the Disk Drive 3. Remove the support plate from the disk drive. 4. Keep the four screws with the attached grommets and the support plate in a safe place. You must install them on the replacement disk drive. 3-12 Removing and Replacing FRUs Removing and Replacing FRUs 3.3.2 Separating the Mounting Bracket from an RZ25, RZ26, or RZ35 Disk Drive When you are replacing an RZ25, RZ26, or RZ35 disk drive, you must remove the mounting bracket (74-44226-01) and the rubber grommets (12-31734- 01) that are attached to the faulty disk drive and install these items on the replacement drive. The following procedure describes how to remove the mounting bracket and rubber grommets from an RZ25 disk drive. The procedure for removing the mounting bracket and rubber grommets from an RZ26 or RZ35 disk drive is the same. To remove the mounting bracket and rubber grommets from an RZ25 disk drive, follow these steps: 1. Position the disk drive so that the bottom of the disk drive faces up. 2. Remove the four screws and attached grommets (see Figure 3-8). These screws secure the mounting bracket to the disk drive. Removing and Replacing FRUs 3-13 Removing and Replacing FRUs Figure 3-8 Separating the Mounting Bracket from the RZ25 Disk Drive 3. Remove the mounting bracket from the disk drive. 4. Keep the four screws with the attached grommets and the mounting bracket in a safe place. You must install them on the replacement disk drive. 3.3.3 Setting the SCSI ID on the Replacement Disk Drive To set the SCSI ID on a replacement disk drive, follow these steps: 1. Note the SCSI ID switch settings on the disk drive you removed. The locations of the SCSI ID jumper wires on the various types of disk drive are shown in the following figures: · RZ23L--see Figure 3-9 3-14 Removing and Replacing FRUs Removing and Replacing FRUs · RZ24--see Figure 3-10 · RZ25--see Figure 3-11 · RZ26--see Figure 3-12 · RZ35--see Figure 3-13 2. Set the SCSI ID switches on the replacement disk drive to the same settings as the SCSI ID switches of the disk drive you removed. Figure 3-9 RZ23L Disk Drive SCSI ID Jumper Wire Locations Removing and Replacing FRUs 3-15 Removing and Replacing FRUs Figure 3-10 RZ24 Disk Drive SCSI ID Jumper Wire Locations 3-16 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-11 RZ25 Disk Drive SCSI ID Jumper Wire Locations Removing and Replacing FRUs 3-17 Removing and Replacing FRUs Figure 3-12 RZ26 Disk Drive SCSI ID Jumper Wire Locations 3-18 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-13 RZ35 Disk Drive SCSI ID Jumper Wire Locations See the Options manual for more information about setting the SCSI ID of the RZ-series disk drives. 3.4 Removing the Upper Drive-Mounting Shelf To reach some of the FRUs in the BA42-B enclosure, you must remove the upper drive-mounting shelf. Depending on the system configuration, the upper drive-mounting shelf can contain one, two, or three disk drives. You can remove the upper drive-mounting shelf with the disk drives attached. To remove the upper drive-mounting shelf, follow these steps: 1. Remove the enclosure cover (see Section 3.1). Removing and Replacing FRUs 3-19 Removing and Replacing FRUs ------------------------------------------------------------ Note ------------------------------------------------------------ When disconnecting the cables, you must note which cables connect to which drives. On the SCSI cable, note the number on the connector pull-tab. ------------------------------------------------------------ 2. Disconnect the power cable from the disk drives on the upper drive- mounting shelf. Figure 1-3 shows the power cables in the BA42-B enclosure. 3. Disconnect the power cable from the power supply unit. Remove the power cable from the enclosure. 4. Disconnect the SCSI cables from the disk drives by pulling the pull-tabs. Figure 1-4 shows the SCSI cables in the BA42-B enclosure. 5. Loosen the three captive screws (see Figure 3-14). 3-20 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-14 Removing the Upper Drive-Mounting Shelf 6. Lift the left side of the upper drive-mounting shelf, and pull the drive- mounting shelf to the left until the tabs on the right side of the mounting shelf are clear of the cutouts in the lower drive-mounting shelf. 7. Remove the upper drive-mounting shelf from the enclosure. 3.5 Removing an RZ-Series Disk Drive from the Lower Drive-Mounting Shelf Depending on the system configuration, RZ-series disk drives may be installed on the left side and the right side of the lower drive-mounting shelf, when viewed from the front. To remove an RZ-series disk drive from the lower drive-mounting shelf, follow these steps: 1. Remove the enclosure cover (see Section 3.1). Removing and Replacing FRUs 3-21 Removing and Replacing FRUs 2. Remove the upper drive-mounting shelf (see Section 3.4). ------------------------------------------------------------ Note ------------------------------------------------------------ · You can disconnect the cables from a disk drive more easily after you remove the drive from the drive-mounting shelf. · When disconnecting the cables, you must note which cables connect to which drives. On the SCSI cable, note the number on the connector pull-tab. ------------------------------------------------------------ 3. Press and hold the spring clip that locks the disk drive in position (see Figure 3-15). 4. Push the disk drive towards the spring clip until the rubber grommets under the disk drive are released from the cutouts in the drive-mounting shelf (see Figure 3-15). Lift the disk drive up from the lower drive- mounting shelf, and release the spring clip. 3-22 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-15 Removing an RZ-Series Disk Drive from the Lower Drive- Mounting Shelf 5. Disconnect the SCSI cable from the back of the disk drive by pulling the pull-tab. Figure 1-4 shows the signal cables in the BA42-B enclosure. 6. Disconnect the power cable from the back of the disk drive. Figure 1-3 shows the power cables in the BA42-B enclosure. 7. Remove the support plate from the disk drive (see Section 3.3.1). 3.6 Removing the RX26 Diskette Drive Assembly The RX26 diskette drive assembly (when installed) is positioned on the left side or the right side of the lower drive-mounting shelf when viewed from the front. The RX26 diskette drive assembly contains three FRUs as follows: · RX26-AA diskette drive · RX26 FDI/SCSI board (54-20764-02) · RX26 ribbon cable (17-00285-00) Removing and Replacing FRUs 3-23 Removing and Replacing FRUs The following procedure describes how to remove an RX26 diskette drive assembly from the right side of the lower drive-mounting shelf. The procedure for removing the RX26 diskette drive assembly from the left side of the lower drive-mounting shelf is the same. To remove the RX26 diskette drive assembly from the BA42-B enclosure, follow these steps: 1. Remove the enclosure cover (see Section 3.1). 2. Remove the upper drive-mounting shelf (see Section 3.4). ------------------------------------------------------------ Note ------------------------------------------------------------ When disconnecting the cables, you must note which cables connect to which drives. On the SCSI cable, note the number on the connector pull-tab. ------------------------------------------------------------ 3. Disconnect the power cable from the back of the RX26 diskette drive. Figure 1-3 shows the power cables in the BA42-B enclosure. 4. Disconnect the power cable from the floppy diskette interface/small computer system interface (FDI/SCSI) board. 5. Disconnect the SCSI cable from the back of the FDI/SCSI board by pulling the pull-tab. Figure 1-4 shows the signal cables in the BA42-B enclosure. 6. Loosen the captive screw securing the mounting bracket to the lower drive-mounting shelf (see Figure 3-16). 3-24 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-16 Removing the RX26 Diskette Drive Assembly 7. Lift the left side of the RX26 diskette drive assembly and pull the diskette drive assembly to the left until the tabs on the right side of the mounting bracket are clear of the cutouts in the lower drive-mounting shelf. 8. Lift the RX26 diskette drive assembly out of the BA42-B enclosure. 3.6.1 Removing the RX26 FDI/SCSI Board To remove the FDI/SCSI board from the RX26 mounting bracket, follow these steps: 1. Disconnect the ribbon cable that connects the RX26 diskette drive to the RX26 FDI/SCSI board. 2. Turn the RX26 diskette drive assembly over so that the base of the mounting bracket faces up. Removing and Replacing FRUs 3-25 Removing and Replacing FRUs 3. Press firmly on the front edge of the FDI/SCSI board with your finger. When the two holes on the front edge of the FDI/SCSI board are clear of the tabs in the RX26 mounting bracket, slide the RX26 FDI/SCSI board out of the RX26 mounting bracket (see Figure 3-17). Figure 3-17 Removing the RX26 FDI/SCSI Board 3.6.2 Separating the RX26 Diskette Drive from the Mounting Bracket When you are installing a replacement RX26 diskette drive, you must use the mounting bracket (70-29669-01) that is attached to the faulty RX26 diskette drive (RX26-AA). To separate the RX26 diskette drive from its mounting bracket, follow these steps: 1. Remove the four screws (90-10961-03) securing the RX26 mounting bracket to the RX26 diskette drive. 2. Separate the mounting bracket from the RX26 diskette drive (see Figure 3-18). 3-26 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-18 Separating the Mounting Bracket from the RX26 Diskette Drive 3.6.3 Setting the SCSI ID on the Replacement RX26 FDI/SCSI Board When replacing the FDI/SCSI board, you must set the SCSI ID of the replacement board to the SCSI ID of the board you remove. To set the SCSI ID on a replacement RX26 FDI/SCSI board, follow these steps: 1. Note the SCSI ID switch settings on the RX26 FDI/SCSI board you removed. Figure 3-19 shows the location of the SCSI ID switches on the FDI/SCSI board. 2. Set the SCSI ID switches on the replacement RX26 FDI/SCSI board to the same settings as the SCSI ID switches of the RX26 FDI/SCSI board you removed. Removing and Replacing FRUs 3-27 Removing and Replacing FRUs Figure 3-19 Location of the SCSI ID Switches on the RX26 FDI/SCSI Board After you install the FDI/SCSI board and connect the RX26 ribbon cable, you can reach the SCSI ID switches through a ventilation slot in the mounting bracket (see Figure 3-20). 3-28 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-20 How to Reach the SCSI ID Switches on the RX26 FDI/SCSI Board 3.7 Removing a TZ30 Tape Drive The TZ30 tape drive (when installed) is on the right side of the lower drive- mounting shelf, when viewed from the front. To remove a TZ30 tape drive from the BA42-B enclosure, follow these steps: 1. Remove the enclosure cover (see Section 3.1). 2. Remove the upper drive-mounting shelf (see Section 3.4). Removing and Replacing FRUs 3-29 Removing and Replacing FRUs ------------------------------------------------------------ Note ------------------------------------------------------------ · You can disconnect the cables from the drive more easily after you remove the drive from the drive-mounting shelf. · When disconnecting the cables, you must note which cables connect to which drives. On the SCSI cable, note the number on the connector pull-tab. ------------------------------------------------------------ 3. Loosen the captive screw that secures the mounting bracket to the drive-mounting shelf (see Figure 3-21). Figure 3-21 Removing a TZ30 Tape Drive 4. Lift the left side of the TZ30 tape drive. Slide the TZ30 tape drive to the left until the tabs on the right side of the mounting bracket are clear of the cutouts in the drive-mounting shelf. 3-30 Removing and Replacing FRUs Removing and Replacing FRUs 5. Disconnect the power cable from the flying lead connector of the TZ30 tape drive. Figure 1-3 shows the power cables in the BA42-B enclosure. 6. Disconnect the SCSI cable from the TZ30 tape drive by pulling the pull-tab. Figure 1-4 shows the signal cables in the BA42-B enclosure. 7. Lift the TZ30 tape drive, which has its mounting bracket attached, out of the system unit. 3.7.1 Separating the TZ30 Tape Drive from the Mounting Bracket When you are installing a replacement TZ30 tape drive, you must use the mounting bracket (74-42115-01) that is attached to the faulty TZ30 tape drive (TZ30-AA). To separate the mounting bracket from the faulty TZ30 tape drive, follow these steps: 1. Remove the two screws (90-09984-07) from the right side of the mounting bracket (see Figure 3-22). 2. Remove one screw (90-09984-07) from the left side of the mounting bracket (see Figure 3-22). 3. Remove one screw (90-10961-03) from the bottom of the drive mounting bracket (see Figure 3-22). 4. Separate the mounting bracket from the TZ30 tape drive. Removing and Replacing FRUs 3-31 Removing and Replacing FRUs Figure 3-22 Separating the Mounting Bracket from the TZ30 Tape Drive 5. Keep the mounting bracket and the four screws in a safe place because you must use them to install the replacement TZ30 tape drive. 3.7.2 Setting the SCSI ID on the Replacement TZ30 Tape Drive To set the SCSI ID on the replacement TZ30 tape drive, follow these steps: 1. Note the SCSI ID switch settings on the TZ30 tape drive you removed. Figure 3-23 shows the location of the SCSI ID switches and the recommended SCSI ID for tape drives. 2. Set the SCSI ID switches on the replacement TZ30 tape drive to the same settings as the SCSI ID switches on the TZ30 tape drive you removed. 3-32 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-23 TZ30 SCSI ID Switch Locations See the Options manual for more information about setting the SCSI ID of the TZ30 tape drive. 3.8 Removing a TZK10 Tape Drive The TZK10 tape drive (when installed) can be on the right side or the left side of the lower drive-mounting shelf, when viewed from the front. The following procedure describes how to remove a TZK10 tape drive from the right side of the lower drive-mounting shelf. The procedure for removing the TZK10 tape drive from the left side of the lower drive-mounting shelf is the same. To remove a TZK10 tape drive from the BA42-B enclosure, follow these steps: 1. Remove the enclosure cover (see Section 3.1). Removing and Replacing FRUs 3-33 Removing and Replacing FRUs 2. Remove the upper drive-mounting shelf (see Section 3.4). ------------------------------------------------------------ Note ------------------------------------------------------------ · You can disconnect the cables from the drive more easily after you remove the drive from the drive-mounting shelf. · When you disconnect the cables, note which cables connect to which drives. On the SCSI cable, note the number on the connector pull-tab. ------------------------------------------------------------ 3. Loosen the captive screw that secures the mounting bracket to the drive-mounting shelf (see Figure 3-24). 3-34 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-24 Removing the TZK10 Tape Drive 4. Lift the left side of the TZK10 tape drive. Slide the TZK10 tape drive to the left until the tabs on the right side of the mounting bracket are clear of the cutouts in the lower drive-mounting shelf. 5. Disconnect the power cable from the back of the TZK10 tape drive. Figure 1-3 shows the power cables in the BA42-B enclosure. 6. Disconnect the SCSI cable from the back of the TZK10 tape drive by pulling the pull-tab. Figure 1-4 shows the signal cables in the BA42-B enclosure. 7. Lift the TZK10 tape drive out of the system unit. Removing and Replacing FRUs 3-35 Removing and Replacing FRUs 3.8.1 Separating the TZK10 Tape Drive from the Mounting Bracket When you install a replacement TZK10 tape drive, you must use the mounting bracket (74-42449-01) that is attached to the faulty TZK10 tape drive (TZK10- AA). To separate the mounting bracket from the faulty TZK10 tape drive, follow these steps: 1. Remove the four screws (90-10961-03) that secure the mounting bracket to the TZK10 tape drive (see Figure 3-25). 2. Separate the mounting bracket from the TZK10 tape drive. Figure 3-25 Separating the Mounting Bracket from the TZK10 Tape Drive 3-36 Removing and Replacing FRUs Removing and Replacing FRUs 3. Keep the mounting bracket and the four screws in a safe place because you must use them to install the replacement TZK10 tape drive. ------------------------------------------------------------ Note ------------------------------------------------------------ When you attach the mounting bracket to the replacement TZK10 tape drive, align the holes on the mounting bracket that are marked by a Q with the screw holes on the sides of the TZK10 tape drive. ------------------------------------------------------------ 3.8.2 Setting the SCSI ID of the Replacement TZK10 Tape Drive To set the SCSI ID of the replacement TZK10 tape drive, follow these steps: 1. Note the positions of the SCSI ID jumper wires on the TZK10 tape drive you removed. Figure 3-26 shows the location of the SCSI ID jumper wires and the recommended SCSI ID for tape drives. 2. Set the SCSI ID jumper wires on the replacement TZK10 tape drive to the same positions as the SCSI ID switches of the TZK10 tape drive you removed. Removing and Replacing FRUs 3-37 Removing and Replacing FRUs Figure 3-26 Locations of the SCSI ID Jumper Wires on the TZK10 Tape Drive See the Options manual for more information about setting the SCSI ID of the TZK10 tape drives. 3.9 Removing a TLZ06 Tape Drive The TLZ06 tape drive (when installed) can be on the right side or the left side of the lower drive-mounting shelf, when viewed from the front. The following procedure describes how to remove a TLZ06 tape drive from the right side of the lower drive-mounting shelf. The procedure for removing the TLZ06 tape drive from the left side of the lower drive-mounting shelf is the same. To remove a TLZ06 tape drive from the BA42-B enclosure, follow these steps: 3-38 Removing and Replacing FRUs Removing and Replacing FRUs 1. Remove the enclosure cover (see Section 3.1). 2. Remove the upper drive-mounting shelf (see Section 3.4). ------------------------------------------------------------ Note ------------------------------------------------------------ · You can disconnect the cables from the drive more easily after you remove the drive from the drive-mounting shelf. · When you disconnect the cables, note which cables connect to which drives. On the SCSI cable, note the number on the connector pull-tab. ------------------------------------------------------------ 3. Loosen the captive screw that secures the mounting bracket to the drive-mounting shelf (see Figure 3-27). Removing and Replacing FRUs 3-39 Removing and Replacing FRUs Figure 3-27 Removing the TLZ06 Tape Drive 4. Lift the left side of the TLZ06 tape drive. Slide the TLZ06 tape drive to the left until the tabs on the right side of the mounting bracket are clear of the cutouts in the lower drive-mounting shelf. 5. Disconnect the power cable from the back of the TLZ06 tape drive. Figure 1-3 shows the power cables in the BA42-B enclosure. 6. Disconnect the SCSI cable from the back of the TLZ06 tape drive by pulling the pull-tab. Figure 1-4 shows the signal cables in the BA42-B enclosure. 7. Lift the TLZ06 tape drive out of the system unit. 3-40 Removing and Replacing FRUs Removing and Replacing FRUs 3.9.1 Separating the TLZ06 Tape Drive from the Mounting Bracket When you install a replacement TLZ06 tape drive, you must use the mounting bracket (74-42449-01) that is attached to the faulty TLZ06 tape drive (TLZ06- AA). To separate the mounting bracket from the faulty TLZ06 tape drive, follow these steps: 1. Remove the four screws (90-10961-03) that secure the mounting bracket to the TLZ06 tape drive (see Figure 3-28). 2. Separate the mounting bracket from the TLZ06 tape drive. Figure 3-28 Separating the Mounting Bracket from the TLZ06 Tape Drive Removing and Replacing FRUs 3-41 Removing and Replacing FRUs 3. Keep the mounting bracket and the four screws in a safe place because you must use them to install the replacement TLZ06 tape drive. ------------------------------------------------------------ Note ------------------------------------------------------------ When you attach the mounting bracket to the replacement TLZ06 tape drive, align the holes on the mounting bracket that are marked by a Q with the screw holes on the sides of the TLZ06 tape drive. ------------------------------------------------------------ 3.9.2 Setting the SCSI ID and Option Switches of the Replacement TLZ06 Tape Drive To set the SCSI ID and option switches of the replacement TLZ06 tape drive, follow these steps: 1. Note the positions of the SCSI ID and option switches on the TLZ06 tape drive you removed. Figure 3-29 shows the location of the SCSI ID and option switches and the recommended SCSI ID for tape drives. 2. Set the SCSI ID and option switches on the replacement TLZ06 tape drive to the same positions as the SCSI ID switches of the TLZ06 tape drive you removed. 3-42 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-29 Locations of the SCSI ID and Option Switches on the TLZ06 Tape Drive See the Options manual for more information about setting the SCSI ID and option switches on TLZ06 tape drives. 3.10 Removing an RRD42 CD-ROM Drive The RRD42 CD-ROM drive (when installed) is on the left side of the lower drive-mounting shelf, when viewed from the front. To remove an RRD42 CD-ROM drive from the BA42-B enclosure, follow these steps: 1. Remove the enclosure cover (see Section 3.1). Removing and Replacing FRUs 3-43 Removing and Replacing FRUs 2. Remove the upper drive-mounting shelf (see Section 3.4). ------------------------------------------------------------ Note ------------------------------------------------------------ · You can disconnect the cables from the drive more easily after you remove the drive from the drive-mounting shelf. · When you disconnect the cables, you must note which cables connect to which drives. On the SCSI cable, note the number on the connector pull-tab. ------------------------------------------------------------ 3. Loosen the captive screw that secures the mounting bracket to the drive-mounting shelf (see Figure 3-30). 3-44 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-30 Removing the RRD42 CD-ROM Drive 4. Lift the right side of the RRD42 CD-ROM drive. Slide the RRD42 CD-ROM drive to the right until the tabs on the left side of the mounting bracket are clear of the cutouts in the lower drive-mounting shelf. 5. Disconnect the power cable from the back of the RRD42 CD-ROM drive. Figure 1-3 shows the power cables in the BA42-B enclosure. 6. Disconnect the SCSI cable from the back of the RRD42 CD-ROM drive by pulling the pull-tab. Figure 1-4 shows the signal cables in the BA42-B enclosure. 7. Lift the RRD42 CD-ROM drive, which has its bracket attached, out of the system unit. ------------------------------------------------------------ Caution ------------------------------------------------------------ The RRD42 CD-ROM drive has a plastic cover that protects the drive from dust. Do not remove this cover when replacing the RRD42 Removing and Replacing FRUs 3-45 Removing and Replacing FRUs CD-ROM drive or setting the SCSI ID. ------------------------------------------------------------ 3.10.1 Separating the RRD42 CD-ROM Drive from the Mounting Bracket When you install a replacement RRD42 CD-ROM drive, you must use the mounting bracket (74-42449-01) that is attached to the faulty RRD42 CD-ROM drive (RRD42-AA). To separate the mounting bracket from the faulty RRD42 CD-ROM drive, follow these steps: 1. Remove the four screws (90-10961-03) that secure the mounting bracket to the RRD42 CD-ROM drive. 2. Separate the mounting bracket from the RRD42 CD-ROM drive (see Figure 3-31). Figure 3-31 Separating the Mounting Bracket from the RRD42 CD-ROM Drive 3. Keep the mounting bracket and the four screws in a safe place because you must use the same bracket and screws to install the replacement RRD42 CD-ROM drive. 3-46 Removing and Replacing FRUs Removing and Replacing FRUs ------------------------------------------------------------ Note ------------------------------------------------------------ When you attach the mounting bracket to the replacement RRD42 CD-ROM drive, align the holes on the mounting bracket that are not marked by a Q with the screw holes on the sides of the RRD42 CD-ROM drive. ------------------------------------------------------------ 3.10.2 Setting the SCSI ID on the Replacement RRD42 CD-ROM Drive To set the SCSI ID on the replacement RRD42 CD-ROM drive, follow these steps: 1. Note the SCSI ID jumper wires on the RRD42 CD-ROM drive you removed. Figure 3-32 shows the location of the SCSI ID jumper wires. 2. Set the SCSI ID jumper wires on the replacement RRD42 CD-ROM drive to the same positions as the SCSI ID jumper wires on the RRD42 CD-ROM drive you removed. Removing and Replacing FRUs 3-47 Removing and Replacing FRUs Figure 3-32 RRD42 SCSI ID Jumper Wire Locations See the Options manual for more information about setting the SCSI ID of the RRD42 CD-ROM drive. 3.11 Removing the Upper and Lower Drive-Mounting Shelf Combination ------------------------------------------------------------ Caution ------------------------------------------------------------ Static electricity can damage integrated circuits. Wear a wrist strap and place an antistatic mat under the system unit when working with the internal parts of the system unit. ------------------------------------------------------------ 3-48 Removing and Replacing FRUs Removing and Replacing FRUs To reach the CPU module and some of the components that connect to it, you must remove the upper drive-mounting shelf and the lower drive-mounting shelf. To save time, you can remove both of the drive-mounting shelves as one unit with the devices and cables in place. To remove the upper and lower drive-mounting shelf combination, follow these steps: 1. On the power supply unit, disconnect the power cables that supply power to the upper and lower drive-mounting shelves. 2. Loosen the two captive screws that secure the upper drive-mounting shelf to the power supply unit (see Figure 3-33). 3. Loosen the two captive screws that secure the lower drive-mounting shelf to the enclosure (see Figure 3-33). 4. Loosen the two Philips screws (90-09984-07) that secure the lower drive-mounting shelf to the enclosure (see Figure 3-33). Removing and Replacing FRUs 3-49 Removing and Replacing FRUs Figure 3-33 Removing the Upper and Lower Drive-Mounting Shelf Combination 5. Slide the upper and lower drive-mounting shelf combination towards the front of the enclosure as far as it will go. ------------------------------------------------------------ Caution ------------------------------------------------------------ When you disconnect the SCSI cable from the CPU module, ensure that you do not damage any of the MS44 or MS44L memory modules. ------------------------------------------------------------ 6. Disconnect the SCSI cable from the CPU module (see Figure 3-34). 3-50 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-34 Disconnecting the SCSI Cable 7. Lift the upper and lower drive-mounting shelf combination out of the system enclosure with the devices and cables in place. 3.12 Removing the SCSI Cable To remove the SCSI cable from the BA42-B enclosure, follow these steps: 1. Remove the upper and lower drive-mounting shelf combination (see Section 3.11). 2. Disconnect the SCSI cable from the disk drives on the upper drive- mounting shelf. 3. Loosen the captive screw that secures the upper drive-mounting shelf to the lower drive-mounting shelf (see Figure 3-35). Removing and Replacing FRUs 3-51 Removing and Replacing FRUs Figure 3-35 Separating the Upper Drive-Mounting Shelf from the Lower Drive-Mounting Shelf 4. Lift the left side of the upper drive-mounting shelf and slide it to the left until the tabs on the right side of the upper drive-mounting shelf are released from the cutouts in the lower drive-mounting shelf. 5. Disconnect the SCSI cable from the mass storage devices on the lower drive-mounting shelf. To release the SCSI cable, follow steps six to eight for Model 40 and Model 80 systems or step nine for Model 90 systems: 6. Push the tab on the cable clamp (90-11237-01) (see Figure 3-36), and tilt the cable clamp towards the back of the lower drive-mounting shelf. 3-52 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-36 Releasing the SCSI Cable Clamp (Model 40 and Model 80 Only) 7. Release the cable clamp from its cutout in the lower drive-mounting shelf. 8. Turn the cable and the cable clamp through 90° and slide the cable out through the slot in the lower drive-mounting shelf (see Figure 3-36). The next step is for model 90 systems only. 9. Twist the cable through 90° and pull through the slot as shown in Figure 3-37. Removing and Replacing FRUs 3-53 Removing and Replacing FRUs Figure 3-37 Releasing the SCSI Cable (Model 90 Only) 3.13 Removing the DSW42 Synchronous Communications Option The DSW42 synchronous communications option contains three components that you must remove from the CPU module as follows: · A logic board (54-20640-01) · An input/output cable (17-02942-01) · An input/output module (70-28542-01) 3-54 Removing and Replacing FRUs Removing and Replacing FRUs To remove the DSW42 synchronous communications option from the BA42-B enclosure, follow these steps: 1. Remove the enclosure cover (see Section 3.1). 2. Remove the upper and lower drive-mounting shelf combination (see Section 3.11). 3. Remove the logic board, the input/output cable, and the input/output module according to the procedures in the following subsections. 3.13.1 Removing the DSW42 Logic Board ------------------------------------------------------------ Caution ------------------------------------------------------------ Static electricity can damage integrated circuits. Wear a wrist strap and place an antistatic mat under the system unit when working with the internal parts of the system unit. ------------------------------------------------------------ 1. Press the latch on one of the standoff pillars (see Figure 3-38) and push up the corner of the DSW42 logic board until the DSW42 logic board is released. ------------------------------------------------------------ Note ------------------------------------------------------------ The standoff pillars contain two components: a push-button rivet (12-35477-02) and a standoff (12-35477-03). On model 90 systems, the standoff pillars are in the opposite corners to the standoff pillars on model 40 and 80 logic boards. ------------------------------------------------------------ Removing and Replacing FRUs 3-55 Removing and Replacing FRUs Figure 3-38 Removing the DSW42 Logic Board 2. Press the latch on the other standoff pillar and push up that corner of the DSW42 logic board until the DSW42 logic board is released. 3. Push up the DSW42 logic board until the connectors on the DSW42 logic board disengage from the connectors on the CPU module (see Figure 3-38). 4. Remove the DSW42 logic board from the enclosure. 3.13.2 Removing the DSW42 Input/Output Cable To remove the DSW42 input/output cable, follow these steps: 1. Disconnect the DSW42 input/output cable from the CPU module (see Figure 3-39). 2. Disconnect the DSW42 input/output cable from the DSW42 input/output module on the back of the enclosure (see Figure 3-39). 3-56 Removing and Replacing FRUs Removing and Replacing FRUs 3. Remove the DSW42 input/output cable from the enclosure. Figure 3-39 Removing the DSW42 Input/Output Cable 3.13.3 Removing the DSW42 Input/Output Module To remove the DSW42 input/output module, follow these steps: 1. Disconnect the external cables that connect to synchronous ports 0 and 1 on the back of the system unit (if not already disconnected). 2. Disconnect the DSW42 input/output cable from the DSW42 input/output module (if not already disconnected). 3. Press the spring clip on the DSW42 input/output module. Pull the DSW42 input/output module towards the front of the enclosure until it is released from the back of the enclosure (see Figure 3-40). Removing and Replacing FRUs 3-57 Removing and Replacing FRUs 4. Lift up and remove the DSW42 input/output module from the enclosure. Figure 3-40 Removing the DSW42 Input/Output Module 3.14 Removing the DHW42 Asynchronous Communications Option The DHW42 asynchronous communications option contains three components that you must remove from the system enclosure as follows: · A logic board (54-20662-01) · An input/output cable (17-02942-01) · One of the following input/output modules: ------------------------------------------------------------ 8 data-only line input/output module (70-28542-02) ------------------------------------------------------------ 16 data-only line input/output module (70-28542-03) 3-58 Removing and Replacing FRUs Removing and Replacing FRUs ------------------------------------------------------------ 8 modem control line input/output module (70-28543-01) To remove the DHW42 asynchronous communications option from the BA42-B enclosure, follow these steps: 1. Remove the enclosure cover (see Section 3.1). 2. Remove the upper and lower drive-mounting shelf combination (see Section 3.11). 3. Remove the logic board, the input/output cable, and the input/output module according to the procedures in the following subsections. 3.14.1 Removing the DHW42 Logic Board ------------------------------------------------------------ Caution ------------------------------------------------------------ Static electricity can damage integrated circuits. Wear a wrist strap and place an antistatic mat under the system unit when working with the internal parts of the system unit. ------------------------------------------------------------ 1. Press the latch on one of the standoff pillars (see Figure 3-41) and push up the corner of the DHW42 logic board until the DHW42 logic board is released. ------------------------------------------------------------ Note ------------------------------------------------------------ · On Model 90 systems, the DHW42 logic board is located on the left hand side of the KA50 CPU module. · The standoff pillars contain two components: a push-button rivet (12-35477-02) and a standoff (12-35477-03). ------------------------------------------------------------ Removing and Replacing FRUs 3-59 Removing and Replacing FRUs Figure 3-41 Removing the DHW42 Logic Board 2. Press the latch on the other standoff pillar and push up the corner of the DHW42 logic board until the latch releases the DHW42 logic board. 3. Push up the DHW42 logic board until the connectors on the DHW42 logic board disengage from the connectors on the CPU module (see Figure 3-41). 4. Remove the DHW42 logic board from the enclosure. 3.14.2 Removing the DHW42 Input/Output Cable To remove the DHW42 input/output cable, follow these steps: 1. Disconnect the DHW42 input/output cable from the CPU module (see Figure 3-42). 2. Disconnect the DHW42 input/output cable from the DHW42 input/output module on the back of the enclosure (see Figure 3-42). 3-60 Removing and Replacing FRUs Removing and Replacing FRUs 3. Remove the DHW42 input/output cable from the enclosure. Figure 3-42 Removing the DHW42 Input/Output Cable 3.14.3 Removing the DHW42 Input/Output Module To remove the DHW42 input/output module, follow these steps: 1. Disconnect the external cables that are connected to asynchronous ports A and B on the back of the system unit (if not already disconnected). 2. Disconnect the DHW42 input/output cable from the DHW42 input/output module (if not already disconnected). 3. Press the spring clip on the DHW42 input/output module. Pull the DHW42 input/output module towards the front of the enclosure until it is released from the back of the enclosure (see Figure 3-43). Removing and Replacing FRUs 3-61 Removing and Replacing FRUs 4. Lift up and remove the DHW42 input/output module from the enclosure. Figure 3-43 Removing the DHW42 Input/Output Module 3-62 Removing and Replacing FRUs Removing and Replacing FRUs 3.15 Removing the CPU Module To remove the CPU module from the BA42-B enclosure, follow these steps: 1. Disconnect the external cables, loopback connectors, and terminators from the back of the system unit. 2. Remove the enclosure cover (see Section 3.1). 3. Remove the upper and lower drive-mounting shelf combination (see Section 3.11). 4. If installed, remove the DSW42 logic board (see Section 3.13.1) and disconnect the DSW42 input/output cable from the CPU module (see Section 3.13.2). 5. If installed, remove the DHW42 logic board (see Section 3.14.1) and disconnect the DHW42 input/output cable from the CPU module (see Section 3.14.2). 6. Disconnect the MS44 or MS44L memory modules from the CPU module (see Section 3.2). 7. Disconnect the power cable from the CPU module (see Figure 3-44). 8. Disconnect the 3.3 V dc cable (17-03136-01, Model 80 systems only) from the CPU module (see Figure 3-44). Removing and Replacing FRUs 3-63 Removing and Replacing FRUs Figure 3-44 Disconnecting the Cables from the CPU Module 9. Disconnect the SCSI ribbon cable (17-02944-01) from the CPU module (see Figure 3-44). ------------------------------------------------------------ Caution ------------------------------------------------------------ Ensure that you do not damage any of the CPU module components by exerting too much force on the components. ------------------------------------------------------------ 3-64 Removing and Replacing FRUs Removing and Replacing FRUs 10. Press the two spring clips (marked by arrows in Figure 3-45) that secure the CPU module in position. The CPU module moves forward under the tension of the connector gaskets. If necessary, slide the CPU module back until it disengages from the ten keyhole cutouts (see Figure 3-45). 11. Use your finger, in the semicircular cutout on the front edge of the CPU module, to lift up the front edge of the CPU module (see Figure 3-45). 12. While supporting the front of the CPU module with one hand, guide the connectors on the back of the CPU module out of the corresponding cutouts on the back of the enclosure. 13. Carefully remove the Ethernet ID ROM from the CPU module. You must install this ROM in the replacement CPU module. 14. Remove the CPU module from the enclosure. Removing and Replacing FRUs 3-65 Removing and Replacing FRUs Figure 3-45 Removing the CPU Module 3-66 Removing and Replacing FRUs Removing and Replacing FRUs 3.16 Replacing the CPU Module To install a replacement CPU module in a BA42-B enclosure, follow these steps: ------------------------------------------------------------ Caution ------------------------------------------------------------ Static electricity can damage integrated circuits. Wear a wrist strap and place an antistatic mat under the system when working with the internal parts of the system unit. ------------------------------------------------------------ ------------------------------------------------------------ Caution ------------------------------------------------------------ You can damage the ROM or the CPU module by installing the ROM with an incorrect orientation. ------------------------------------------------------------ 1. Install the Ethernet ID ROM that you removed from the original CPU module on the replacement CPU module. Figure 3-46 shows the location and orientation of the Ethernet ID ROM for models 40 and 80. Figure 3-47 shows the location and orientation of the Ethernet ID ROM for models 90. Removing and Replacing FRUs 3-67 Removing and Replacing FRUs Figure 3-46 Location and Orientation of the Ethernet ID ROM for Models 40 and 80 3-68 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-47 Location and Orientation of the Ethernet ID ROM for Model 90 2. Place the CPU module in the enclosure so that the connectors on the CPU module align with the corresponding cutouts in the back panel of the enclosure. Use the ThinWire Ethernet port as an anchor point to adjust the position of the CPU module correctly. 3. Align the keyhole cutouts in the CPU module with the corresponding standoff pillars in the base of the enclosure. ------------------------------------------------------------ Caution ------------------------------------------------------------ Ensure that you do not damage any of the CPU module components by exerting pressure on the components. ------------------------------------------------------------ 4. Press the CPU module at the two positions marked push. The spring clips push the standoff pillars into the keyhole cutouts that secure the CPU module in position. 5. Connect the SCSI ribbon cable (17-02944-01) to the CPU module (see Figure 3-44 for the location of the SCSI ribbon cable). 6. Connect the power cable (Model 40) or the power cables (Model 80) to the CPU module (see Figure 3-44 for the location of the power cables). Removing and Replacing FRUs 3-69 Removing and Replacing FRUs 7. Install the MS44 and MS44L memory modules that you removed from the original CPU module. Follow the steps in Section 3.2 in reverse order to install the memory modules 8. Install the DSW42 logic board, and connect the DSW42 input/output cable if fitted. Follow the steps in Section 3.13.1 and Section 3.13.2 in reverse order to install the logic board and cable. 9. Install the DHW42 logic board, and connect the DHW42 input/output cable if fitted. Follow the steps in Section 3.14.1 and Section 3.14.2 in reverse order to install the logic board and cable. 10. Install the upper and lower drive-mounting shelf combination. Follow the steps in Section 3.11 in reverse order to install the drive-mounting shelf combination. 11. Install the enclosure cover. Follow the steps in Section 3.1 in reverse order to install the cover. 3.17 Removing the Power Supply Unit ------------------------------------------------------------ Note ------------------------------------------------------------ In MicroVAX 3100 platform systems, the power supply unit (30-35042- 01) is a single FRU. It does not have any replaceable components. ------------------------------------------------------------ To remove the power supply unit from the BA42-B enclosure, follow these steps: 1. Disconnect the power supply. 2. Remove the enclosure cover (see Section 3.1). 3. Remove the upper and lower drive-mounting shelf combination (see Section 3.11). 4. Disconnect the power cable and the 3.3 V dc cable (Model 80 systems only) from the CPU module (see Figure 3-44). 5. Loosen the two captive screws (see Figure 3-48). 3-70 Removing and Replacing FRUs Removing and Replacing FRUs Figure 3-48 Removing the Power Supply Unit 6. Loosen the two Philips screws (90-09984-07) that secure the power supply unit to the left side of the enclosure (see Figure 3-48). ------------------------------------------------------------ Caution ------------------------------------------------------------ Ensure that you do not damage any of the MS44 or MS44L memory modules when you lift the power supply unit out of the enclosure. ------------------------------------------------------------ 7. Lift the front of the power supply unit (see Figure 3-48). 8. Remove the power supply unit from the enclosure. Removing and Replacing FRUs 3-71 A ------------------------------------------------------------ Pin Specifications for the Ports on the BA42-B System Figure A-1 shows the pin specifications for the ports on the BA42-B system. Pin Specifications for the Ports on the BA42-B System A-1 Pin Specifications for the Ports on the BA42-B System Figure A-1 Pin Specifications for the Ports on the BA42-B System A-2 Pin Specifications for the Ports on the BA42-B System Pin Specifications for the Ports on the BA42-B System Table A-1 Asynchronous Port A and Port B Pin Specifications for the Eight- Data and 16-Data Line Options ------------------------------------------------------------ Port A Port B 1 Contact Signal Name 2 Signal Name 2 ------------------------------------------------------------ 1 LINE 0 TRANSMIT H LINE 8 TRANSMIT H 2 LINE 0 RECEIVE H LINE 8 RECEIVE H 3 LINE 1 TRANSMIT H LINE 9 TRANSMIT H 4 LINE 1 RECEIVE H LINE 9 RECEIVE H 5 LINE 2 TRANSMIT H LINE 10 TRANSMIT H 6 LINE 2 RECEIVE H LINE 10 RECEIVE H 7 LINE 3 TRANSMIT H LINE 11 TRANSMIT H 8 LINE 3 RECEIVE H LINE 11 RECEIVE H 9 LINE 4 TRANSMIT H LINE 12 TRANSMIT H 10 LINE 4 RECEIVE H LINE 12 RECEIVE H 11 LINE 5 TRANSMIT H LINE 13 TRANSMIT H 12 LINE 5 RECEIVE H LINE 13 RECEIVE H 13 LINE 6 TRANSMIT H LINE 14 TRANSMIT H 14 LINE 6 RECEIVE H LINE 14 RECEIVE H 15 LINE 7 TRANSMIT H LINE 15 TRANSMIT H 16 LINE 7 RECEIVE H LINE 15 RECEIVE H 17 150 OHMS TO GROUND 150 OHMS TO GROUND 18 150 OHMS TO GROUND 150 OHMS TO GROUND 19 LINE 0 TRANSMIT L LINE 8 TRANSMIT L 20 LINE 0 RECEIVE L LINE 8 RECEIVE L 21 LINE 1 TRANSMIT L LINE 9 TRANSMIT L 22 LINE 1 RECEIVE L LINE 9 RECEIVE L 23 LINE 2 TRANSMIT L LINE 10 TRANSMIT L 24 LINE 2 RECEIVE L LINE 10 RECEIVE L 25 LINE 3 TRANSMIT L LINE 11 TRANSMIT L 26 LINE 3 RECEIVE L LINE 11 RECEIVE L ------------------------------------------------------------ 1 Not applicable to eight-data line option. 2 The signal names ending with L are active low; the signal names ending with H are active high. (continued on next page) Pin Specifications for the Ports on the BA42-B System A-3 Pin Specifications for the Ports on the BA42-B System Table A-1 (Cont.) Asynchronous Port A and Port B Pin Specifications for the Eight-Data and 16-Data Line Options ------------------------------------------------------------ Port A Port B 1 Contact Signal Name 2 Signal Name 2 ------------------------------------------------------------ 27 LINE 4 TRANSMIT L LINE 12 TRANSMIT L 28 LINE 4 RECEIVE L LINE 12 RECEIVE L 29 LINE 5 TRANSMIT L LINE 13 TRANSMIT L 30 LINE 5 RECEIVE L LINE 13 RECEIVE L 31 LINE 6 TRANSMIT L LINE 14 TRANSMIT L 32 LINE 6 RECEIVE L LINE 14 RECEIVE L 33 LINE 7 TRANSMIT L LINE 15 TRANSMIT L 34 LINE 7 RECEIVE L LINE 15 RECEIVE L 35 150 OHMS TO GROUND 150 OHMS TO GROUND 36 150 OHMS TO GROUND 150 OHMS TO GROUND ------------------------------------------------------------ 1 Not applicable to eight-data line option. 2 The signal names ending with L are active low; the signal names ending with H are active high. ------------------------------------------------------------ Table A-2 Asynchronous Port A and Port B Pin Specifications for the Eight- Modem Control Line Option ------------------------------------------------------------ Port A Port B Contact Signal Name 1 Signal Name 1 ------------------------------------------------------------ 1 LINE 0 TX CONN L LINE 4 TX CONN L 2 LINE 0 RX CONN L LINE 4 RX CONN L 3 LINE RTS CONN<0> H LINE RTS CONN<4> H 4 LINE 0 CTS CONN H LINE 4 CTS CONN H 5 LINE 0 DSR CONN H LINE 4 DSR CONN H 6 LINE 0 SGND CONN L LINE 4 SGND CONN L 7 LINE 0 CD CONN H LINE 4 CD CONN H 8 LINE 0 SPDMI CONN H LINE 4 SPDMI CONN H 9 LINE DTR CONN<0> H LINE DTR CONN<4> H ------------------------------------------------------------ 1 The signal names ending with L are active low; the signal names ending with H are active high. (continued on next page) A-4 Pin Specifications for the Ports on the BA42-B System Pin Specifications for the Ports on the BA42-B System Table A-2 (Cont.) Asynchronous Port A and Port B Pin Specifications for the Eight-Modem Control Line Option ------------------------------------------------------------ Port A Port B Contact Signal Name 1 Signal Name 1 ------------------------------------------------------------ 10 LINE 0 RI CONN H LINE 4 RI CONN H 11 12 LINE DSRS CONN<0> H LINE DSRS CONN<4> H 13 LINE 1 TX CONN L LINE 5 TX CONN L 14 LINE 1 RX CONN L LINE 5 RX CONN L 15 LINE RTS CONN<1> H LINE RTS CONN<5> H 16 LINE 1 CTS CONN H LINE 5 CTS CONN H 17 LINE 1 DSR CONN H LINE 5 DSR CONN H 18 LINE 1 SGND CONN L LINE 5 SGND CONN L 19 LINE 1 CD CONN H LINE 5 CD CONN H 20 LINE 1 SPDMI CONN H LINE 5 SPDMI CONN H 21 LINE DTR CONN<1> H LINE DTR CONN<5> H 22 LINE 1 RI CONN H LINE 5 RI CONN H 23 24 LINE DSRS CONN<1> H LINE DSRS CONN<5> H 25 LINE 2 TX CONN L LINE 6 TX CONN L 26 LINE 2 RX CONN L LINE 6 RX CONN L 27 LINE RTS CONN<2> H LINE RTS CONN<6> H 28 LINE 2 CTS CONN H LINE 6 CTS CONN H 29 LINE 2 DSR CONN H LINE 6 DSR CONN H 30 LINE 2 SGND CONN L LINE 6 SGND CONN L 31 LINE 2 CD CONN H LINE 6 CD CONN H 32 LINE 2 SPDMI CONN H LINE 6 SPDMI CONN H 33 LINE DTR CONN<2> H LINE DTR CONN<6> H 34 LINE 2 RI CONN H LINE 6 RI CONN H 35 36 LINE DSRS CONN<2> H LINE DSRS CONN<6> H ------------------------------------------------------------ 1 The signal names ending with L are active low; the signal names ending with H are active high. (continued on next page) Pin Specifications for the Ports on the BA42-B System A-5 Pin Specifications for the Ports on the BA42-B System Table A-2 (Cont.) Asynchronous Port A and Port B Pin Specifications for the Eight-Modem Control Line Option ------------------------------------------------------------ Port A Port B Contact Signal Name 1 Signal Name 1 ------------------------------------------------------------ 37 LINE 3 TX CONN L LINE 7 TX CONN L 38 LINE 3 RX CONN L LINE 7 RX CONN L 39 LINE RTS CONN<3> H LINE RTS CONN <7> H 40 LINE 3 CTS CONN H LINE 7 CTS CONN H 41 LINE 3 DSR CONN H LINE 7 DSR CONN H 42 LINE 3 SGND CONN L LINE 7 SGND CONN L 43 LINE 3 CD CONN H LINE 7 CD CONN H 44 LINE 3 SPDMI CONN H LINE 7 SPDMI CONN H 45 LINE DTR CONN<3> H LINE DTR CONN<7> H 46 LINE 3 RI CONN H LINE 7 RI CONN H 47 48 LINE DSRS CONN<3> H LINE DSRS CONN<7> H 49 50 ------------------------------------------------------------ 1 The signal names ending with L are active low; the signal names ending with H are active high. ------------------------------------------------------------ Table A-3 Pin Specifications for Synchronous Port 0 and Port 1 ------------------------------------------------------------ Port 0 Port 1 Contact Signal Name 1 Signal Name 1 ------------------------------------------------------------ 1 CODE GND 1 L CODE GND 2 L 2 CODE0 1 L CODE0 2 L 3 CODE1 1 L CODE1 2 L 4 CODE2 1 L CODE2 2 L 5 CODE3 1 L CODE3 2 L 6 TXDATA(B) 1 P L TXDATA(B) 2 P L ------------------------------------------------------------ 1 The signal names ending with L are active low; the signal names ending with H are active high. (continued on next page) A-6 Pin Specifications for the Ports on the BA42-B System Pin Specifications for the Ports on the BA42-B System Table A-3 (Cont.) Pin Specifications for Synchronous Port 0 and Port 1 ------------------------------------------------------------ Port 0 Port 1 Contact Signal Name 1 Signal Name 1 ------------------------------------------------------------ 7 TXDATA(A) 1 P H TXDATA(A) 2 P H 8 TXDATA 1 P L TXDATA 2 P L 9 RTS/C A 1 P L RTS/C A 2 P L 10 RTS/C B 1 P L RTS/C B 2 P L 11 RX DATA A 1 P L RX DATA A 2 P L 12 RX DATA B 1 P L RX DATA B 2 P L 13 LOCAL LOOP 1 P H LOCAL LOOP 2 P H 14 TEST 4 1 P L TEST 4 2 P L 15 TEST 11 1 P H TEST 11 2 P H 16 REM LOOP 1 P H REM LOOP 2 P H 17 R1 1 P H R1 2 P H 18 RXCLOCK A 1 P L RXCLOCK A 2 P L 19 RXCLOCK B 1 P H RXCLOCK B 2 P H 20 TXCLOCK A 1 P L TXCLOCK A 2 P L 21 TXCLOCK B 1 P H TXCLOCK B 2 P H 22 CLOCK 1 P L CLOCK 2 P L 23 V35 TXCLK A 1 P L V35 TXCLK A 2 P L 24 V35 TXCLK B 1 P H V35 TXCLK B 2 P H 25 V35 CLK A 1 P L V35 CLK A 2 P L 26 V35 CLK B 1 P H V35 CLK B 2 P H 27 V35 RX A 1 P L V35 RX A 2 P L 28 V35 RX B 1 P H V35 RX B 2 P H 29 V35 TX A 1 P L V35 TX A 2 P L 30 V35 TX B 1 P H V35 TX B 2 P H 31 V35 RXCLK A 1 P L V35 RXCLK A 2 P L 32 V35 RXCLK B 1 P H V35 RXCLK B 2 P H 33 DTR 1 P H DTR 2 P H ------------------------------------------------------------ 1 The signal names ending with L are active low; the signal names ending with H are active high. (continued on next page) Pin Specifications for the Ports on the BA42-B System A-7 Pin Specifications for the Ports on the BA42-B System Table A-3 (Cont.) Pin Specifications for Synchronous Port 0 and Port 1 ------------------------------------------------------------ Port 0 Port 1 Contact Signal Name 1 Signal Name 1 ------------------------------------------------------------ 34 DSR A 1 P H DSR A 2 P H 35 DSR B 1 P L DSR B 2 P L 36 RTS 1 P L RTS 2 P L 37 DCD/I A 1 P H DCD/I A 2 P H 38 DCD/I B 1 P L DCD/I B 2 P L 39 CTS A 1 P H CTS A 2 P H 40 CTS B 1 P L CTS B 2 P L 42 TEST 1 1 P H TEST 1 2 P H 43 TEST 2 1 P H TEST 2 2 P H 44 DTE GND 1 PROT L DTE GND 2 PROT L 45 DTR A 1 P H DTR A 2 P H 46 DTR B 1 P L DTR B 2 P L 47 CLOCK A 1 P L CLOCK A 2 P L 48 CLOCK B 1 P H CLOCK B 2 P H 49 TEST 3 1 P H TEST 3 2 P H 50 SPEED SEL 1 P H SPEED SEL 2 P H ------------------------------------------------------------ 1 The signal names ending with L are active low; the signal names ending with H are active high. ------------------------------------------------------------ A-8 Pin Specifications for the Ports on the BA42-B System Pin Specifications for the Ports on the BA42-B System Table A-4 Pin Specifications for the External SCSI Connector ------------------------------------------------------------ Contact Signal Name 1 Contact Signal Name 1 ------------------------------------------------------------ 1 GROUND 26 TERMPWR 2 DB (0) L 27 RESERVED 3 GROUND 28 RESERVED 4 DB (1) L 29 GROUND 5 GROUND 30 GROUND 6 DB (2) L 31 GROUND 7 GROUND 32 ATN L 8 DB (3) L 33 GROUND 9 GROUND 34 GROUND 10 DB (4) L 35 GROUND 11 GROUND 36 BSY L 12 DB (5) L 37 GROUND 13 GROUND 38 ACK L 14 DB (6) L 39 GROUND 15 GROUND 40 RST L 16 DB (7) L 41 GROUND 17 GROUND 42 MSG L 18 DB (P) L 43 GROUND 19 GROUND 44 SEL L 20 GROUND 45 GROUND 21 GROUND 46 C/D L 22 GROUND 47 GROUND 23 RESERVED 48 REQ L 24 RESERVED 49 GROUND 25 OPEN 50 I/O L ------------------------------------------------------------ 1 The signal names ending with L are active low; the signal names ending with H are active high. ------------------------------------------------------------ Pin Specifications for the Ports on the BA42-B System A-9 B ------------------------------------------------------------ Recommended Spare Parts List Table B-1 gives a list of the recommended spare parts for the MicroVAX 3100 Model 40 and Model 80 systems that use the BA42-B enclosure. Table B-1 Recommended Spare Parts ------------------------------------------------------------ Description 1 Part Number Quantity ------------------------------------------------------------ CPU module, KA45-AA (SOC) 54-20654-01 1 CPU module, KA47-AA (Mariah) 54-20652-01 1 CPU module, KA50-AA (NVAX) 54-21797-01 1 Cable assembly, SCSI A internal loop 17-02943-01 1 SCSI cable clamp 90-11237-01 1 Cable assembly, SCSI A/B, CPU to I/O 17-02944-01 1 Terminator, 50-way SCSI (H8574-A) 12-30552-01 1 Loopback connector, standard Ethernet 12-22196-01 1 T-connector, ThinWire Ethernet (H8223) 12-25869-01 1 Terminator, ThinWire Ethernet, 50-ohm (H8225) 12-26318-01 2 Loopback connector, modem port, 25-way 29-24795-00 1 Adapter, 25-way EIA-232 to 6-way MMJ H8575-A 1 Memory module, MS44-AA (4M bytes) 54-19103-AA 1 Memory module, MS44L-AA (4M bytes) MS44L-AA 1 Memory module, MS44-CA (16M bytes) 54-19103-CA 1 Power supply unit (H7829-AA) 30-35042-01 1 Cable assembly, dc harness, upper shelf 17-02219-01 1 ------------------------------------------------------------ 1 The major FRUs are the entries in this column that are not indented. This manual gives instructions on how to replace these FRUs. (continued on next page) Recommended Spare Parts List B-1 Recommended Spare Parts List Table B-1 (Cont.) Recommended Spare Parts ------------------------------------------------------------ Description 1 Part Number Quantity ------------------------------------------------------------ Cable assembly, dc harness, lower shelf 17-03018-01 1 Cable assembly, 3.3 V dc harness 17-03136-01 1 RX26 diskette drive RX26-AA 1 Cable assembly, RX26 to SCSI/FDI board 17-00285-00 1 RX26 SCSI/FDI board 54-20764-02 1 RZ23L disk drive RZ23L-E 1 RZ24 disk drive RZ24-E 1 RZ25 disk drive RZ25-E 1 RZ26 disk drive RZ26-E 1 RZ35 disk drive RZ35-E 1 TZ30 tape drive TZ30-AX 1 TZ30 take-up leader 74-34273-01 1 TZK10 tape drive TZK10-AA 1 TLZ06 tape drive TLZ06-AA 1 RRD42 CD-ROM drive RRD42-AA 1 Asynchronous option, DHW42 logic board 54-20662-01 1 Asynchronous option, DHW42 input/output cable 17-02942-01 1 Asynchronous option, DHW42 input/output module (8-data only lines) 70-28542-02 1 Asynchronous option, DHW42 input/output module (16-data only lines) 70-28542-03 1 Cable assembly, asynchronous, 36-way Champ to harmonica 17-01174-01 1 System loopback connector (8- or 16-data only lines) H3101-00 1 Cable loopback connector (8- or 16-data only lines) H3101-00 1 Harmonica, 8-line distribution H3104-00 1 Loopback connector, MMJ (H3103) 12-25083-01 1 ------------------------------------------------------------ 1 The major FRUs are the entries in this column that are not indented. This manual gives instructions on how to replace these FRUs. (continued on next page) B-2 Recommended Spare Parts List Recommended Spare Parts List Table B-1 (Cont.) Recommended Spare Parts ------------------------------------------------------------ Description 1 Part Number Quantity ------------------------------------------------------------ Asynchronous option, DHW42 input/output module (8 modem control lines) 70-28543-01 1 Cable assembly, async, 50-way uchamp to four 25-way D-sub (BC29J-06) 17-02941-01 1 System loopback connector (4 modem control lines, H4081-A) 12-34212-01 1 Synchronous option, DSW42 logic board 54-20640-01 1 Synchronous option, input/output cable 17-02942-01 1 Synchronous option, input/output module (two lines) 70-28542-01 1 System loopback connector (H3199-00) 12-25852-01 2 Cable assembly, EIA-232/V.24 (BC19D-02) 17-01110-01 2 Cable assembly, EIA-423/V.10 (BC19E-02) 17-01111-01 2 Cable assembly, EIA-422/V.11 (BC19B-02) 17-01108-01 2 EIA-232/V.24 cable loopback connector H3248-00 2 EIA-423/V.10 cable loopback connector (H3198-00) 12-26259-01 2 EIA-422/V.11 cable loopback connector (H3198-00) 12-26259-01 2 System power cord (USA) 17-00606-02 1 Terminal cable (BC16E-25) 17-00811-03 1 Antistatic kit 29-26246-00 1 ------------------------------------------------------------ 1 The major FRUs are the entries in this column that are not indented. This manual gives instructions on how to replace these FRUs. ------------------------------------------------------------ Recommended Spare Parts List B-3 ------------------------------------------------------------ Glossary The glossary defines some of the important terms used in this manual. ac alternating current. CD-ROM Compact disc read-only memory. CPU Central processing unit. The main unit of a computer containing the circuits that control the interpretation and execution of instructions. The CPU holds the main storage, arithmetic unit, and special registers. dc direct current. ESD Electrostatic discharge. Ethernet A type of local area network (LAN) based on carrier sense multiple access with collision detection (CSMA/DC). FDI Floppy diskette interface. FRU Field replaceable unit. ground A voltage reference in a system that has a zero voltage potential. Glossary-1 jumper wire A short length of wire used to complete a circuit temporarily or to bypass a circuit. LED Light emitting diode. MMJ Modified modular jack. module A unit that contains electrical components and electrically conductive pathways between components. port A physical connector. rms root mean square. The root mean square value of an alternating voltage is the square root of the mean value of the square of the voltage values during a complete cycle. ROM Read-only memory. SCSI Small computer system interface. An interface designed for connecting disks and other peripheral devices to computer systems. SCSI is defined by an American National Standards Institute (ANSI) standard. standard Ethernet An IEEE 802.3 compliant Ethernet network composed of standard Ethernet cable as opposed to thin Ethernet cable. system A combination of system hardware, software, and peripheral devices that performs specific processing operations. ThinWire A trademark used to describe Digital's IEEE 802.3 compliant products used for local distribution of data communication. Glossary-2 ------------------------------------------------------------ Index A ------------------------------------------------------------ Accessory tray, 2-5 Air exhaust, 1-10 Air flow typical value, 1-10 Air intake, 1-10 Altitude nonoperating, 2-4 operating, 2-4 Asynchronous communications options list of, 1-17 removing, 3-58 spare parts for, B-1 B ------------------------------------------------------------ BA42-B system installing, 2-7 pin specifications, A-1 Break/enable LED function of, 1-5 location of, 1-3 Break/enable switch function of, 1-5 location of, 1-3 C ------------------------------------------------------------ Cable clamp releasing (Models 40 and 80 only), 3-53 Cable loopback connectors, B-1 Cables disconnecting from the CPU, 3-64 CD-ROM drive removing, 3-43 Communications devices list, 1-16 Communications options list of, 1-17 ports for, 1-3 Configuration communications options, 1-16 mass storage devices, 1-20 Model 40 memory, 1-10 Model 80 memory, 1-12 to 1-14 Model 90 memory, 1-14 to 1-16 system, 1-10 Connectors system unit, 1-3 Console terminal communication parameters, 2-7 connecting, 2-7 Controls system unit, 1-3 Cover removing, 3-5 CPU module removing, 3-63 replacing, 3-67 Index-1 D ------------------------------------------------------------ DHW42 removing, 3-58 DHW42 input/output cable removing, 3-60 DHW42 input/output module removing, 3-61 DHW42 logic board removing, 3-59 Dimensions BA42-B enclosure, 2-1 shipping container, 2-2 Disk drive removing, 3-10 SCSI ID setting, 3-14 See RZ-series, 3-10, 3-14 Diskette drive removing, 3-23 Drive-mounting shelves function of, 1-20 removing, 3-48 DSW41 removing, 3-54 DSW42 input/output cable removing, 3-56 DSW42 input/output module removing, 3-57 DSW42 logic board removing, 3-55 E ------------------------------------------------------------ Electrical power requirements, 2-5 Electrostatic discharge See ESD, 2-3 Enclosure description of, 1-1 removing cover, 3-5 ESD effects of, 2-3 protection, 2-3 Ethernet ID ROM location of, 3-67 orientation of, 3-67 Ethernet loopback connector standard Ethernet, 2-12 Ethernet switch function of, 1-5 location of, 1-3 Ethernet terminators connecting, 2-10 F ------------------------------------------------------------ FDI/SCSI board removing, 3-25 Field replaceable unit See FRU Flying lead connector, 3-30 FRU defined, 3-1 list, 3-3 locations, 3-3 section references, 3-3 H ------------------------------------------------------------ Heat dissipation typical value, 2-3 Humidity nonoperating, 2-4 operating, 2-4 storage, 2-4 I ------------------------------------------------------------ ID ROM removing, 3-65 Indicators function of, 1-3 power OK, 1-3 system unit, 1-3 Input/output module DHW42, removing, 3-61 DSW42, removing, 3-57 Index-2 Interconnection diagram, A-1 J ------------------------------------------------------------ Jumper wires RRD42, 3-47 RZ23L, 3-15 RZ24, 3-16 RZ25, 3-17 RZ26, 3-18 RZ35, 3-19 TZK10, 3-37 K ------------------------------------------------------------ KA45 CPU module removing, 3-63 KA47 CPU module removing, 3-63 L ------------------------------------------------------------ LED display, 1-6 Logic board DHW42, removing, 3-59 DSW42, removing, 3-55 Loopback connectors for system ports, B-1 standard Ethernet, 2-12 M ------------------------------------------------------------ Mass storage devices combinations, 1-20 list, 1-20 orientation, 1-20 Memory expansion increments, 1-10, 1-12, 1-14 model 40 basic, 1-10 model 80 basic, 1-12 model 90 basic, 1-14 modules, 1-10, 1-12, 1-14, 3-6 Memory expansion connectors identification of, 1-10, 1-12, 1-14 Model 40 basic system memory, 1-10 Model 80 basic system memory, 1-12 Model 90 basic system memory, 1-14 Mounting bracket RRD42, 3-46 RX26, 3-26 RZ25, 3-13 TLZ06, 3-41 TZ30, 3-31 TZK10, 3-36 MS44-AA memory module removing, 3-6 MS44-CA memory module removing, 3-6 MS44L-AA memory module removing, 3-6 N ------------------------------------------------------------ Nonoperating conditions, 2-4 O ------------------------------------------------------------ On/Off switch function of, 1-5 location of, 1-3 Operating conditions, 2-4 Option switches TLZ06, 3-42 P ------------------------------------------------------------ Pin specifications, A-1 Ports asynchronous, 1-3 function of, 1-3 identifying, 1-3 location of, 1-3 MMJ, 1-3 SCSI, 1-3 synchronous, 1-3 Index-3 Power cord connecting, 2-13 Power distribution, 1-8 to 1-9 Power OK indicator, 1-3 Power requirements, 2-5 Power supply unit dc current outputs, 1-7 flying lead connector, 3-30 output power, 1-7 removing, 3-70 specifications, 1-7 Power-on indicator, 1-3 R ------------------------------------------------------------ Recommended spare parts list of, B-1 RRD42 CD-ROM drive mounting bracket, 3-46 removing, 3-43 SCSI ID setting, 3-47 RX26 diskette drive mounting bracket, 3-26 removing, 3-23 RX26 FDI/SCSI board removing, 3-25 SCSI ID setting, 3-27 RZ-series disk drive removing, 3-10 SCSI ID setting, 3-14 RZ23L disk drive removing, 3-10, 3-21 SCSI ID setting, 3-14 RZ24 disk drive removing, 3-10, 3-21 SCSI ID setting, 3-14 RZ24L disk drive removing, 3-10 RZ25 disk drive removing, 3-10, 3-21 SCSI ID setting, 3-14 RZ26 disk drive removing, 3-10 SCSI ID setting, 3-14 RZ35 disk drive removing, 3-10 SCSI ID setting, 3-14 S ------------------------------------------------------------ SCSI cable releasing (Model 90 only), 3-53 removing, 3-51 SCSI ID RRD42 jumper wire locations, 3-47 RX26 switch locations, 3-27, 3-28 RZ23L jumper wire locations, 3-15 RZ24 jumper wire locations, 3-16 RZ25 jumper wire locations, 3-17 RZ26 jumper wire locations, 3-18 RZ35 jumper wire locations, 3-19 setting on RZ-series disk drives, 3-14 TLZ06 SCSI ID and option switches location, 3-42 TZ30 switch locations, 3-32 TZK10 jumper wire locations, 3-37 SCSI ID switches TLZ06, 3-42 Signal distribution, 1-9 Site preparation, 2-1 Space requirements, 2-7 Spare parts list of, B-1 Standard Ethernet loopback connector, 2-12 Static electricity See ESD, 2-3 Storage conditions, 2-4 Support plate separating, 3-11 Synchronous communications options list of, 1-16 removing, 3-54 spare parts for, B-1 System configuration guidelines for, 1-10 System loopback connectors, B-1 Index-4 System unit air exhaust, 1-10 air intake, 1-10 clearance, 2-7 connectors, 1-3, 2-7 controls, 1-3 dimensions, 2-1 indicators, 1-3 ports, 1-3, 2-7 spare parts for, B-1 turning on, 2-14 T ------------------------------------------------------------ Tape drive TLZ06, removing, 3-38 TZ30, removing, 3-29 TZK10, removing, 3-33 Temperature nonoperating, 2-4 operating, 2-4 storage, 2-4 Terminator ThinWire Ethernet, 2-10 TLZ06 tape drive mounting bracket, 3-41 option switches, 3-42 removing, 3-38 SCSI ID setting, 3-42 TZ30 tape drive mounting bracket, 3-31 removing, 3-29 SCSI ID setting, 3-32 TZK10 tape drive mounting bracket, 3-36 removing, 3-33 SCSI ID setting, 3-37 U ------------------------------------------------------------ Upper drive-mounting shelf removing, 3-19 Index-5