Compaq AP200 Maintenance And Service Manual page 82

4-24 Diagnostic Tools
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
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 4-13
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 and retest.
Table 4-14
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 and retest.