_ FCO KA630-AA-R001, System crashes - Machine Chk 80,81,82, or 83 ----------------------------------------------------------------------------| | _ _ _ _ _ _ _ | | | | | | | | | | Level of Page 1 | | |d|i|g|i|t|a|l| Urgency Of 8 | | |_|_|_|_|_|_|_| FCO [ R ] | |___________________________________________________________________________| | FIELD CHANGE ORDER Number: KA630-AA-R001 | |___________________________________________________________________________| | Applicability: | | Retrofit CPU and memory modules as identified in Table 1 (page 5) | | present in: MicroVAX II and VAXstation II systems running Ultrix 32m | | software; MicroVAX II and VAXstation II systems running UNIX derivatives; | | MicroVAX II and VAXstation II systems running MicroVMS ONLY AS Symptoms | | OCCUR. This FCO implements ECO M7606-ML006. Purge Field Service | | Stockrooms of -AH/-BH variants. | | | | | || This revised FCO supersedes the original release dated 14 April 1986. | | | It has been revised to correct a documentation error in Table 1 (pg 5).| |___________________________________________________________________________| | Problem/Symptoms: | | System Crashes of the type "Machine Check 80, 81, 82 or 83." | | | |___________________________________________________________________________| | Quick Check: Presence of valid CPU and memory modules identified in | | Table 1 (page 5). | | | |___________________________________________________________________________| | Compatibility/Prerequisite FCO: See also: | Est. Time to Install | | EQ-01358-02, EQ-01359-01, EQ-01359-02 | 1.3 Hours | |___________________________________________________|_______________________| | Special Tools or Test Equipment: | | None | |___________________________________________________________________________| | FCO Parts Information | |___________________________________________________________________________| | Order by | Contents | | FCO Kit # |____________________________________________________________| | | Quantity Part Number Description | | | | | EQ-01358-01 | 1 M7606-AA KA630 w/FP and 1 MB memory | | | | | FA-04639-01 | 1 FCO Document | | | | |______________|____________________________________________________________| | EQ Kit Variation/System-Option Applic: 630QB, 630QY, 630QZ, 630QV | |___________________________________________________________________________| | Approvals | |___________________________________________________________________________| | CSSE Engineer |F.S. Product Safety | F.S. Logistics | | Ken Caruso | Ken Adametz | Ed Duggan | |________________________|_________________________|________________________| | Responsible CSSE Mgr |F.S. Microfiche Libraries| Affected Population | | Dave Margerum | | 1500 | |________________________| EP-FSNVX-LB VAX |_______________________ | | ESD&P Micropublishing | EP-FSP11-LB PDP-11 | Initial Kitting | | Marie Rice | | 1500 | |________________________| VAXnotes |_______________________ | | Revision | STARS | Hardcopy Publication | | B | | 1500 | |________________________| |________________________| | FCO Release Date | | Parts Availability | | 29-April-1986 | | April 1986 | +---------------------------------------------------------------------------+ _ _ _ _ _ _ _ | FCO KA630-AA-R-001 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 2 OF 8 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ Problem Identification MicroVAX II and VAXstation II systems running Ultrix 32m, UNIX derivatives, or MicroVMS software may exhibit a problem which can be identified by the following symptoms: 1. Excessive system crashes 2. Frequency varies, twice per week to daily. 3. Upon examination of system error information a Machine Check of the type 80, 81, 82 or 83 is identified as the cause of the system crash. Note, similar symptoms could be caused by a defective memory module. If the system is exhibiting these symptoms but does not contain any of the problem modules listed in Table 1, then run the MicroVAX Maintenance System memory diagnostics to isolate the defective memory. The problem being corrected with this FCO is NOT detectable by the MicroVAX Maintenance System memory diagnostics. Identifying the problem on systems running Ultrix 32m ----------------------------------------------------- Access the Ultrix System Message file to review past occurrences of the problem. Ultrix 32m is sensitive to the case (upper or lower) of terminal input. Type the command exactly as presented here: cat /usr/adm/messages and press the return key. A typical entry will appear as follows: machine check 80: unrecoverable read error sumpar = 80 most recent virtual address =7880 internal state =40000 pc = 787e psl = 3C00000 mcesr = 0 mser = 3C1 caer = 2946 daer = 2946 _ _ _ _ _ _ _ | FCO KA630-AA-R-001 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 3 OF 8 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ Problem Identification (cont.) Identifying the problem on systems running MicroVMS --------------------------------------------------- The problem can be identified by examining the console stack dumps. A typical stack dump would appear as follows: FATAL BUG CHECK, VERSION = V4.2 MACHINECHK, Machine check while in kernal mode CURRENT PROCESS = NULL REGISTER DUMP R0 = 80032B20 R1 = 00000001 (The remainder VAX processor registers are printed here) KERNAL/INTERRUPT STACK 801CA1C4 0000000C !This indicates a Machine Check Stack 801CA1C8 00000080 !This is the type of Machine Check 801CA1CC 00007DEA !This is the Most Recent Virtual Address (The remainder of the Kernal/Interrupt stack is printed here) If the MicroVMS Errorlogger utility was enabled at the time the crash occurred additional error information can be obtained. Refer to Chapter 7 of the MicroVAX Maintenance Guide (AZ-GM3AA-MN) for information on how to enable the errorlogger and access information contained in the errorlog. Identifying the problem on systems running UNIX derivatives ----------------------------------------------------------- Since there are many variations of UNIX available in the marketplace it is not possible to document them here. Consult with the System manager for assistance in acquiring and interpreting system failure information. Affected Population ------------------- Systems built and delivered before October, 1985. System serial numbers in the range of: BTO 0000 thru BTO 1700 WF5400 0000 thru WF5400 5395 The system contains one or more of the problem modules identified in Table 1. _ _ _ _ _ _ _ | FCO KA630-AA-R-001 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 4 OF 8 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ Retrofit Procedure 1. Request that the customer stop all Operating System activity and make the system available for service. 2. Load and run the MicroVAX Maintenance System diagnostics (ZNA06-C3/C5), Menu selections 2 and then 1. Refer to the MicroVAX Maintenance Guide (AZ-GM3AA-MN) Chapter 6 for information on loading and running the diagnostics. Insure the system passes the diagnostics before continuing. 3. Power down the system to be worked on via the console switch. Press "0" on the front panel rocker switch labeled "0/1" . ************************************************* * !! CAUTION !! * * * * AC POWER MUST BE REMOVED FROM THE SYSTEM * * BEFORE PROCEEDING. * ************************************************* 4. Disconnect the power cord from the wall receptacle. **************************************************** * !! NOTE !! * * * * The modules in this system contain ESD sensitive * * devices. The use of the Field Service Anti-Static* * kit (29-11762) is essential to prevent damage to * * the system modules which may not be immediately * * noticeable. * **************************************************** 5. Set up the Anti-Static kit (29-11762) in the following manner: a. Unfold the velostat mat to full size. b. Attach the ground cord to the snap fastener on the mat. c. Attach the alligator clip end of the ground cord to a good ground. Note, if you have unplugged the system per instructions the system is no longer an adequate ground point. d. Place the wrist strap on either wrist and attach the alligator clip to a convenient portion of the mat. 6. Make a note of the position of the cables connected to the patch panel assembly. Disconnect these cables, only if necessary to gain clear access to the backplane area of the system. _ _ _ _ _ _ _ | FCO KA630-AA-R-001 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 5 OF 8 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ Retrofit Procedure Con't. 7. Gain access to the backplane area of the system. Refer to the appropriate chapter in the MicroVAX Maintenance Guide (AZ-GM3AA-MN) for instructions on disassembly. The BA23 system enclosure is described in Chapter 8, the BA123 system enclosure is described in Chapter 9. 8. Inspect the CPU and memory modules contained in the system to determine if: The CPU module is a M7606-AH variant. The memory module(s) are M7607/M7608 -AH/-BH variants. 9. Replace the problem module(s) with the appropriate replacements as identified in Table 1 below. 10. Reassemble the system, replace all cables, and reconnect AC power. 11. Run the MicroVAX Maintenance diagnostics (ZNA06-C3/C5), Menu Selections 2, 1 and 4, "Exercise the System" selection. Refer to the MicroVAX Maintenance Guide (AZ-GM3AA-MN) chapter 6, for information on running the MicroVAX Maintenance diagnostics. 12. Tag the replaced modules and return them through normal Logistic channels. 13. Fill out the LARS Report as per the attached examples. TABLE 1 Problem Module Valid Replacements EQ Kit # M7606-AH M7606-AC, AF, AS, AP, ZS, ZC, ZF, ZP EQ-01358-01 M7607-AH M7607-AC, AF, AS, AP EQ-01358-02 M7608-AH M7608-AC, AF, AS, AP EQ-01359-01 M7608-BH M7608-BC, BF, BS, BP EQ-01359-02 \^ KA630 \\KA630 \\KA630-AA \\KA630-AA-R001 \\CARUSO \\1986 \\APR \\FCO_DOCS