_ FCO VT240-I004, Power supply connectors develop high resistance +-----------------------------------------------------------------------------+ | | | _ _ _ _ _ _ _ Level of Urgency Page_1_ | || | | | | | | | +---+ Of_29_ | ||d|i|g|i|t|a|l| FCO | I | | ||_|_|_|_|_|_|_| +---+ | |_____________________________________________________________________________| | | | FIELD CHANGE ORDER NUMBER: VT240-I004 | |_____________________________________________________________________________| | Applicability: Replace DC power cable P/N 17-00428-01 with P/N 17-00428-02 | | on all VT240 AND VT241'S. This FCO implements ECO# VS240-ML010. | |_____________________________________________________________________________| | PROBLEM/SYMPTOM: Connectors used on power supply cable 17-00428-01 can | | develop high resistance. This may be seen as a shaky VR201 display. | |_____________________________________________________________________________| | QUICK CHECK: DC power supply cable has part number 17-00428-02 label. | | | |_____________________________________________________________________________| | Compatibility/prerequisite FCO: N/A | Est. Time to Install: | | | .2 hour | |___________________________________________________|_________________________| | Special Tools or Test Equipment: N/A | | | |_____________________________________________________________________________| | FCO PARTS INFORMATION | |_____________________________________________________________________________| | ORDER BY QUANTITY: PART NUMBER: DESCRIPTION: | | FCO KIT#: | | EQ-01417-01 1 17-00428-02 DC Power Cable | | FA-04702-01 1 FCO Document | |_____________________________________________________________________________| |EQ Kit Variation System/Option Applic: | | VT240 all variations, and VT241 all variations | |_____________________________________________________________________________| | APPROVALS | |_____________________________________________________________________________| | CSSE Engineer | F.S. Product Safety | F.S. Logistics | | James Riess | Bill Henry | Ed Duggan | |____________________|__________________________|_____________________________| | CSSE Manager | F.S. Microfiche Libraries| Affected Population: | | Robert Bills | | 21,000 | |____________________| EP-FSNVX-LB VAX |____________________________ | | ESD&P Micropub. | EP-FSP11-LB PDP11 | Initial Kitting: | | Ray LeBlanc | EP-FSP8-LB PDP-8 | 13,400 | |____________________| EP-FSLCG-LB LCG |____________________________ | | Revision: | | Hardcopy Publication: | | A | VAXnotes | 15,000 | |____________________| STARS |_____________________________| | FCO Release date | | Parts Availability: | | 22-SEP-86 | | August 1986 | +-----------------------------------------------------------------------------+ _ _ _ _ _ _ _ | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 2 OF 29 | | _____________________________|_______________________________________ TABLE OF CONTENTS SECTION I Description of FCO SECTION II Gaining Access to the VT240 Logic Board Top Cover Removal Power Supply Removal SECTION III Re-assembling the VT240 Power Supply Installation Top Cover Installation SECTION IV Optional Testing of the VT240 Power-Up Self-Test EIA Port Data Lines Loopback Self-Test Printer Port External Loopback Self-Test EIA Port Control Lines Loopback Self-Test 20mA Port Loopback Self-Test Integral Modem External Loopback Self-Test SECTION V Figures and Illustrations _ _ _ _ _ _ _ | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 3 OF 29 | | _____________________________|_______________________________________ SECTION I - FCO DESCRIPTION This FCO replaces the DC power cable, DEC part number 17-00428-01 with DC power cable DEC part number 17-00428-02. SECTION II - GAINING ACCESS TO THE DC POWER CABLE TOP COVER REMOVAL Perform the following steps to remove the top cover. ************************************************** * WARNING * * * * Turn the system box power switch to "O" (off * * position). Remove the power cord from the * * wall outlet and from power cord connector on * * the rear of the system box (See Figure 1). * * * ************************************************** 1. Disconnect all other cables, if applicable, from the rear panel of the system box including: o EIA host port cable o 20 mA host port cable o composite video output cable o video monitor cable o printer port cable o keyboard cable o modem cables 2. Position system box with bottom side up as shown in Figure 2 and remove the two top cover retaining screws with a 3/16 inch slotted screwdriver. 3. Reposition the system box as shown in Figure 3. Lift the cover up from the front and pull forward to release the hinge hooks. See note on next page. _ _ _ _ _ _ _ | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 4 OF 29 | | _____________________________|_______________________________________ ************************************************************* * NOTE * * * * You may have to press the power switch on the front of * * the system box before the top cover can be lifted free * * of the bottom cover. * * * ************************************************************* POWER SUPPLY CHASSIS REMOVAL Perform the following steps to remove the power supply chassis. 1. Pull up on the two pop fasteners located on the front of the power supply chassis (See Figure 4). 2. Lift front of power supply chassis just enough to get your fingers under the front edge as shown in Figure 5. ************************************************************* * NOTE * * * * Power supply chassis is firmly in place and may require * * firm pressure to free it once the pop fasteners have * * been released. * * * ************************************************************* 3. Cautiously work the power supply chassis away from the rear chassis panel until the tabs on the power supply chassis are disengaged from the slots in the rear chassis panel (See Figure 6). 4. Disconnect the DC power supply cable connector from the power supply, which is mounted on the bottom side of the power supply chassis. Put the power supply chassis aside (See Figure 7). 5. Remove the old DC power cable (17-00428-01) and replace it with the new DC power cable (17-00428-02) supplied with the EQ parts kit. _ _ _ _ _ _ _ | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 5 OF 29 | | _____________________________|_______________________________________ SECTION III - RE-ASSEMBLING THE VT240 REPLACE POWER SUPPLY CHASSIS 1. Position the power supply chassis as shown in Figure 8. While holding the power supply chassis, connect the cable to the power supply. 2. Carefully position the power supply chassis tabs into the rear panel chassis slots (See Figure 9). 3. Reposition the power supply chassis onto the bottom chassis (See Figure 10). 4. Snap the two pop fasteners into place (See Figure 11). REPLACE VT240 TOP COVER 1 Insert hinge hooks as shown, and lower cover into place (See Figures 12 and 13). 2. Position system box bottom up and replace the two retaining screws (See Figure 14). 3. Reconnect all cables to the system box. 4. Reconnect the power cable first to the system box, then to the wall outlet (See Figure 15). 5. Turn the system box power switch to "1" (ON position). The terminal should display "VT240 OK" (See Figure 16). 6. Make an entry in the Site Management Guide. 7. Fill out LARS Report (see samples on page 29). _ _ _ _ _ _ _ | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 6 OF 29 | | _____________________________|_______________________________________ SECTION IV - TESTING THE VT240 SERIES VIDEO TERMINAL This section contains the information needed to perform loopback self-test functions on the VT240 series terminal. After installing the FCO when power was first applied, the VT240 should have displayed "VT240 OK" inside a small box. This power up self test indicates that your terminal is probably working. You may want to thoroughly test the VT240 by preforming the following loopback selftests. To run these tests you will need three different loopback connectors: DEC Part number: 12-15336-00 EIA Data loopback connector 70-15503-00 20 mA loopback connector 29-24794-00 Printer Port loopback connector There are a series of self-tests to help you isolate failures to the field replaceable units (FRUs). These tests are designed to address 95% of the VT240's functionality. If a test discloses a faulty FRU, consult your local digital Field Service office. ************************************************************* * NOTE * * * * Each self-test forces a RESET of the terminal Set-Up * * features back to the saved defaults. The prerequisites * * must be Set-Up before invoking each self-test. * * * ************************************************************* ************************************************************ * NOTE * * * * It is imperative that the EIA port not be connected * * to a host when invoking the VT240 self-tests and * * alignment patterns. * * * ************************************************************ _ _ _ _ _ _ _ | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 7 OF 29 | | _____________________________|_______________________________________ POWER-UP SELF-TEST The power-up self-test checks the terminal's internal memory, the video circuitry, the keyboard, and makes a partial check of the communication and printer ports to see if they are operating properly. A successful power-up self-test ends when: (1) The keyboard LED indicators are off (See Figure 16). (2) The keyboard generates a bell tone. (3) A "VT240 OK" message enclosed by a rectangle appears on the screen. This message will disappear from the screen the moment any character except X-ON is received by your terminal or if you let 30 minutes elapse. Should an error occur, check your monitor first. Your monitor will display on the screen "VT240" accompanied by an error message, and your keyboard will generate two bell tones. If an error occurs that makes it impossible for you to continue operating your monitor, the keyboard LED indicators will also display the error code. Start the power-up self-test with one of the following two methods: 1. Turn the power to the VT240 on (the power-up self-test is invoked automatically each time the terminal is turned on). 2. Or type one of the following sequences to conduct the power-up self-test. Read the following note first. ************************************************************* * NOTE * * * * If you are already operating your terminal, enter * * SET-UP and put your terminal in local and in the * * VT100 mode. * * * ************************************************************* ESC [ 4 ; 1 y (Performs test once) ESC [ 4 ; 1 ; 9 y (Performs test continuously) _ _ _ _ _ _ _ | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 8 OF 29 | _____________________________|_______________________________________ ************************************************************* * NOTE * * * * The continuously running power-up self-test ends only * * if an error occurs or the power is turned off. As each * * test in the sequence ends successfully, the keyboard * * generates a single bell tone. * * * ************************************************************* When you invoke the power-up self-test: o Initially, all LED indicators go on. When the test has been completed successfully, the LED indicators go off. o The keyboard generates a single bell tone. o A "VT240 OK" message enclosed by a rectangle will appear on the screen (See Figure 16). EIA PORT DATA LINES LOOPBACK SELF-TEST In the EIA port data lines loopback self-test, the terminal's transmit and receive lines are connected together with a data loopback connector (See Figure 17). The terminal transmits a predefined set of characters on its transmit line and receives them on its receive line. It then compares the output characters to the input characters and displays an error code at the LEDs, and an error message on the screen if the characters do not match. A successful test ends when: (1) The keyboard LED indicators are off. (2) The keyboard generates a bell tone. (3) A "VT240 OK" message enclosed by a rectangle appears on the screen. Perform the following steps to run the EIA port data lines loopback self-test. 1. Enter SET-UP and put your terminal in local and in the VT100 mode. 2. Connect the data loopback connector (PN 12-15336-00 to the host port (See Figure 17). 3. Type one of the following sequences to perform the data loopback self-test. ESC [ 4 ; 2 y (Performs test once) ESC [ 4 ; 2 ; 9 y (Performs test continuously) _ _ _ _ _ _ _ | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 9 OF 29 | _____________________________|_______________________________________ ************************************************************* * NOTE * * * * The continuously running test ends only if an error * * occurs or the power is turned off. The keyboard * * generates a bell tone each time the test is * * completed successfully. * * * ************************************************************* If the EIA port data lines loopback self-test finds an error. your terminal will display "VT240 EIA Port Data Error -- 4" on the screen and an error code at the keyboard LED indicators. PRINTER PORT EXTERNAL LOOPBACK SELF-TEST In the printer port loopback self-test, the printer port transmit and receive lines are connected together using the printer port loopback connector (See Figure 17). The terminal transmits a predefined set of characters on its transmit line and receives them on its receive line. It then compares the input characters with the output characters and displays an error message on the screen and an error code at the LED indicators if they do not match. A successful test ends when: (1) The keyboard LED indicators are off. (2) The keyboard generates a bell tone. (3) A "VT240 OK" message enclosed by a rectangle appears on the screen. Perform the following steps to run the printer port loopback self-test. 1. Enter SET-UP and put your terminal in local and in the VT100 mode. 2. Connect the printer port loopback connector (PN 29-24794-00) to the printer port (See Figure 17). 3. Type one of the following sequences to perform the printer port external loopback test. ESC [ 4 ; 3 y (Performs test once) ESC [ 4 ; 3 ; 9 y (Performs test continuously) _ _ _ _ _ _ _ | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 10 OF 29 | | _____________________________|_______________________________________ ************************************************************* * NOTE * * * * The continuously running test ends only if an error * * occurs or the power is turned off. The keyboard * * generates a bell tone each time the test is completed * * successfully. * * * ************************************************************* If the printer port loopback self-test finds an error. Your terminal will display "VT240 Printer Port Error -- 2" on the screen, and an error code at the keyboard LED indicators. EIA PORT CONTROL LINES LOOPBACK SELF-TEST This procedure tests data terminal ready, request to send, carrier detect, data set ready, and clear to send. A successful test ends when: (1) The keyboard LED indicators are off. (2) the keyboard generates a bell tone. (3) A "VT240 OK" message enclosed by a rectangle appears on the screen. Perform the following steps to run the EIA port control lines loopback self-test. 1. Enter SET-UP and put your terminal in local and in the VT100 mode. 2. Install EIA loopback connector (PN 12-15336-00) to EIA host port (See Figure 17). 3. Type one of the following sequences to perform the EIA port control lines loopback self-test. ESC [ 4 ; 6 y (Performs test once) ESC [ 4 ; 6 ; 9 y (Performs test continuously) ************************************************************* * NOTE * * * * The continuously running test ends only if an error * * occurs or the power is turned off. The keyboard * * generates a bell tone each time the test is completed * * successfully. * * * ************************************************************* _ _ _ _ _ _ _ | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 11 OF 29 | | _____________________________|_______________________________________ If the EIA port control lines loopback self-test finds an error, your terminal will display "VT240 EIA Port Control Error -- 5" on the screen and an error code at the keyboard LED indicators. 20 mA PORT LOOPBACK SELF-TEST In the 20mA port loopback self-test, the VT240's transmit and receive lines are connected together with a 20mA data loopback connector (See Figure 17). The terminal transmits a predefined set of characters on its transmit line and receives them on its receive line. It then compares the output characters to the input characters and displays an error message on the screen and an error code at the LED indicators if the characters do not match. A successful test ends when: (1) The keyboard LED indicators (See Figure 16) are off. (2) The keyboard generates a bell tone. (3) A "VT240 OK" message enclosed by a rectangle appears on the screen. Perform the following steps to run the 20mA port loopback self-test. 1. Enter SET-UP and put your terminal in local and in the VT100 mode. 2. Connect the 20mA loopback connector (PN 70-15503-00) to 20mA port (See Figure 17). 3. Type one of the following sequences. ESC [ 4 ; 7 y (Performs test once) ESC [ 4 ; 7 ; 9 y (Performs test continuously) ************************************************************* * NOTE * * * * The continuously running test ends only if an error * * occurs or the power is turned off. The keyboard * * generates a bell tone each time the test is completed * * successfully. * * * ************************************************************* If the 20mA port loopback self-test finds an error, your VT240 will display "VT240 20mA Port Error -- 3 on the screen and an error code at the keyboard LED indicators. _ _ _ _ _ _ _ | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 12 OF 29 | _____________________________|_______________________________________ INTEGRAL MODEM ANALOG LOOPBACK SELF-TEST In the integral modem external loopback self-test, a predefined set of characters is transmitted to the modem by the VT240 and looped back to the VT240 again. The VT240 then compares the transmitted characters to the received characters and displays an error message on the screen and an error code at the LED indicators (See Figure 16) if the characters do not match. A successful test ends when: (1) The keyboard LED indicators (See Figure 16) are off. (2) The keyboard generates a bell tone. (3) A "VT240 OK" message enclosed by a rectangle appears on the screen. Perform the following steps to run the integral modem analog loopback self-test. 1. Enter SET-UP and put your terminal in local and in the VT100 mode. 2. Type one of the following sequences to perform the integral modem analog loopback self-test. ESC [ 4 ; 14 y (Performs test once) ESC [ 4 ; 14 ; 9 y (Performs test continuously) ************************************************************* * NOTE * * * * The continuously running test ends only if an error * * occurs or the power is turned off. The keyboard * * generates a bell tone each time the test is completed * * successfully. * * * ************************************************************* If the integral modem analog loop self-test finds an error, your terminal will display "VT240 Modem Error -- 8" on the screen and an error code at the keyboard LED indicators. _ _ _ _ _ _ _ | | | | | | | | | FCO VT240-I004 |D|I|G|I|T|A|L| | |_|_|_|_|_|_|_| | PAGE 13 OF 29 | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 14 OF 29 | | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS (continued) - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 15 OF 29 | | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS (continued) - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 16 OF 29 | | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS (continued) - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 17 OF 29 | | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS (continued) - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 18 OF 29 | | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS (continued) - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 19 OF 29 | | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS (continued) - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 20 OF 29 | | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS (continued) - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 21 OF 29 | | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS (continued) - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 22 OF 29 | | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS (continued) - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 23 OF 29 | | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS (continued) - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 24 OF 29 | | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS (continued) - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 25 OF 29 | | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS (continued) - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 26 OF 29 | | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS (continued) - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 27 OF 29 | | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS (continued) - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 28 OF 29 | | _____________________________|_______________________________________ SECTION VI - FIGURES AND ILLUSTRATIONS (continued) - - - - - - - | | | | | | | | | FCO VT240-I004 |d|i|g|i|t|a|l| | |_|_|_|_|_|_|_| | PAGE 29 OF 29 | | _____________________________|_______________________________________ LARS Activity DEC Type Action FCO # Material Option of Taken Comments Used Call ****************************************************************************** For Contract and Warrant Customers U.S. and G.I.A. W Option # M D VT240-I004 EQ-01417-01 ****************************************************************************** For Per CAll Customers U.S., G.I.A and Europe F Option # M D VT240-I004 EQ-01417-01 ****************************************************************************** For Contract and Warranty Customers Europe Y Option # M D VT240-I004 EQ-01417-01 ****************************************************************************** \^ VT240 \\VT240 \\RIESS \\1986 \\SEP \\FCO_DOCS