Parallel Printer - Compaq Deskpro EN Series Maintenance & Service Manual

Memory
Codes Description
0200-xx Memory machine ID test failed.
0202-xx Memory system ROM checksum failed.
0203-xx Memory write/read test failed
0204-xx Memory address test failed.
0205-xx Memory walking 1s test failed
0209-xx RAM long test failed
0211-xx Random pattern test failed.
0212-xx Cache test failed
0214-xx Noise test failed.
0215-xx Random address test failed.
Keyboard
Codes Description
0300-xx Keyboard ID test failed.
0301-xx Keyboard self-test/interface test failed.
0302-xx Individual key test failed.
0304-xx Keyboard repeat test failed.

Parallel Printer

Codes Description
0401-xx Printer failed or not connected.
0402-xx Printer port test failed.
0403-xx Printer pattern test failed.
Diskette Drive
Codes Description
0600-xx Diskette ID drive types test failed.
0601-xx Diskette format failed.
0602–xx Diskette read test failed.
0603–xx Diskette write, read, compare test failed.
0604–xx Diskette random seek test failed.
0605–xx Diskette ID media test failed.
0606–xx Diskette speed test failed.
0610–xx Diskette change line test failed.
Recommended Action
Reinsert memory modules and retest.
1. Remove one memory module at a time until the
error message stops.
2. Replace other removed modules one at a time,
testing each to ensure the error does not return.
3. Replace the system board and retest.
Replace system board and retest.
1. Remove one memory module at a time until the
error message stops.
2. Replace other removed modules one at a time,
testing each to ensure the error does not return.
3. Replace system board and retest.
Recommended Action (0300-0304)
1. Check keyboard connection. If disconnected, turn
the computer off and connect the keyboard.
2. Replace keyboard and retest.
3. Replace system board and retest.
Recommended Action (0401-0403)
1. Connect printer.
2. Check power to the printer.
3. Install loop-back connector and retest.
4. Replace system board and retest.
Recommended Action (0600-0610)
1. Replace diskette media and retest.
2. Check and/or replace diskette power and signal
cables and retest.
3. Replace diskette drive and retest.
4. Replace system board and retest.
Compaq Deskpro EN Series, Small Form Factor and Net PC Models D-3