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5.568 bytes |
Service Hints & Tips |
Document ID: GSMH-3CJJ2Q |
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This document is provided to IBM and our Business Partners to help sell and/or service IBM products. It is not to be distributed beyond that audience or used for any other purpose. |
IBM ValuePoint - Type 64xx miscellaneous tests
Applicable to: World-Wide
Display:
If the screen is rolling, replace the display assembly. If that does not correct the problem, replace the system board.
If the screen is not rolling, do the following to run the display self-test:
Note:
The following test does not work on all ValuePoint displays. If the test does not work, but you suspect the display, replace it. If that does not solve the problem, reinstall the original display, then replace the system board.
1. Power-off the computer and display.
2. Disconnect the display signal cable.
3. Power-on the display.
4. Turn the brightness and contrast controls to their maximum setting.
5. Check for the following conditions:ñ You should be able to vary the screen intensity by adjusting the contrast and brightness controls.
The screen should be white or light gray, with a black margin (test margin) on the screen.
Note:
The location of the test margin varies with the type of display. The test margin might be on the top, bottom, or one or both sides.
If you do not see any test margin on the screen, replace the display. If there is a test margin on the screen, replace the system
board.
Note:
During the first two or three seconds after the display is powered on, the following might occur while the display synchronizes with the computer.
- Unusual patterns or characters
- Static, crackling, or clicking sounds
- A ¿power-on hum— on larger displays
A noticeable odor might occur on new displays or displays recently removed from storage. These sounds, display patterns, and odors are normal; do not replace any parts. If you are unable to correct the problem, go to ¿Undetermined Problem— in this supplement.
Installed Devices List:
Follow the instructions on the screen for the installed devices list.
Warning:
A customized setup configuration (other than default settings) might exist on the computer you are servicing. Running the Configuration Utility program might alter those settings. Note the current configuration settings and verify that the settings are in place when service is complete.
If the number of diskette drives shown in the installed devices list is not correct , do the following:
1. Restart the computer.
2. Run the Configuration Utility program to correct the drive information (see ¿Diagnostics and Test Information— in this supplement).
3. Run the diagnostic tests.
If you cannot correct the drive information, replace FRUs, in the following order, until the problem goes away:
- Diskette drive
- Diskette-drive cable
- System board
If the number of hard disk drives shown in the installed devices list is not correct , do the following:
1. Check the hard disk drive jumper settings (see ¿Hard Disk Drive Jumper Settings— in this supplement).
2. Check the voltages to the hard disk drives (see ¿Power Supply— in the PS/ValuePoint Hardware Maintenance Manual ).
3. Restart the computer and check the configuration.
If the first drive is missing, replace the primary drive.
If any other drive is missing, replace that drive.
If all drives are missing, replace the primary drive.
If the problem remains, replace the drive cable. If that does not fix the problem, replace the system board.
If any other adapter or device is missing from the installed devices list, run the Configuration Utility program (see ¿Diagnostics and Test Information— in this supplement). Check to see if any adapter or device is set to a conflicting address with any other adapter or device. Also be sure that any adapter or device missing from the list is not set to ¿disabled.—
Note:
If the device is still missing from the list, run the diagnostics provided with that device. Devices missing from a model 64XX installed devices list cannot be added to the list.
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Hint Category |
Hardware Maintenance Information | |
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Date Created |
20-12-96 | |
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Last Updated |
30-04-98 | |
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Revision Date |
08-01-99 | |
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Brand |
IBM PC | |
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Product Family |
ValuePoint | |
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Machine Type |
6472, 6482, 6492, 6484, 6494 | |
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Model |
all | |
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Retain Tip (if applicable) |
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