Memory; Keyboard - Compaq AP400 Maintenance And Service Manual

3. Disconnect any peripheral devices other than the monitor and keyboard. Do not
disconnect the printer if you want to test it or use it to log error messages.
4. Delete the Power-on Password, if set.
5. If a key icon (
is set. If this occurs, you must enter the password to continue. To delete the password,
type the current password, then press Enter. If you do not have access to the password,
you must disable it through the SW1-S2 switch on the system board with tray.
6. Install loop-back and terminating plugs for complete testing.
7. Run the Diagnostics diskette.

Memory

Error Code
200-xx
202-xx
203-xx
204-xx
211-xx
214-xx
215-xx

Keyboard

Error Code
300-xx
301-xx
302-xx
304-xx
) appears on the screen when POST completes, the Power-on Password
Memory Test Error Codes
Description
Memory machine ID test failed.
Memory system ROM checksum failed.
Memory write/read test failed.
Memory address test failed.
Random pattern test failed.
Noise test failed.
Random address test failed.
Keyboard Test Error Codes
Description
Keyboard ID test failed.
Keyboard self-test/interface test failed.
Individual key test failed.
Keyboard repeat test failed.
Table 4-12
Recommended Action
Reinsert DIMM in correct location.
The following steps apply to error codes 202-xx
through 215-xx:
1. Remove one pair of DIMM at a time until the error
message stops.
2. Replace other removed DIMMs one pair at a time, testing
each to ensure the error does not return.
3. Replace the system board with tray and retest.
Table 4-13
Recommended Action
The following steps apply to error codes 300-xx through
304-xx:
1. Check the keyboard connection. If disconnected, turn the
computer off and connect the keyboard.
2. Replace the keyboard and retest.
3. Replace the system board with tray and retest.
Compaq Professional Workstation AP400 Maintenance and Service Guide
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