IBM IntelliStation 6866, Hardware Maintenance Manual, Page: 9 / 148

© Copyright IBM Corp. 2000
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Chapter 1. General checkout
This general checkout procedure is for type 6866 computers.
Diagnostic error messages appear when a test program finds a problem with a
hardware option. For the test programs to properly determine if a test Passed, Failed or
Aborted, the test programs check the error-return code at test completion. See
“Diagnostics” on page 6.
General error messages appear if a problem or conflict is found by an application
program, the operating system, or both. For an explanation of these messages, refer to
the information supplied with that software package.
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1. Power-off the computer and all external devices.
2. Check all cables and power cords.
3. Make sure the system board is seated properly.
4. Set all display controls to the middle position.
5. Power-on all external devices.
6. Power-on all external devices.
7. Power-on the computer.
8. Check for the following response:
• Readable instructions or the Main Menu.
DID YOU RECEIVE THE CORRECT RESPONSE?
If NO, continue to
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Attention:
The drives in the computer you are servicing might have been rearranged or the drive startup sequence changed. Be
extremely careful during write operations such as copying, saving or formatting. Data or programs can be overwritten
if you select an incorrect drive.
Notes:
• Type 6866 computers default to come up quiet (no beep and no memory count and checkpoint code display) when
no errors are detected by POST.
• To enable beep and memory count and checkpoint code display when a successful POST occurs, do the following:
1. Select Start Options in the Configuration/Setup Utility program (see “Setup Utility program” on page 5).
2. Set Power-On Self-Test to Enhanced.
• Before replacing any FRUs, ensure that the latest level of BIOS is installed on the system. A down-level BIOS might
cause false errors and unnecessary replacement of the system board. For more information on how to determine
and obtain the latest level BIOS, see “BIOS levels” on page 93.
• If multiple error codes are displayed, diagnose the first error code displayed.
• If the computer hangs with a POST error, go to “POST error codes” on page 66.
• If the computer hangs and no error is displayed, go to “Undetermined problems” on page 81.
• If an installed device is not recognized by the diagnostics program, that device might be defective.