Compaq DL580R01 Service Guide - Page 94

Diagnostics and Troubleshooting 3-25 300 - 399, Keyboard Test Error Codes The 300 series of diagnostic error codes identifies failures with keyboard and system board functions. Correction action may require replacement of the keyboard or the system board assembly. Table 3-5 Keyboard Test Error Codes Error Code 301-XX 302-XX 303-XX 304-XX Description Keyboard short test, 8042 self-test failed. Keyboard long test failed. Keyboard LED test, 8042 self-test failed. Keyboard typematic test failed. Recommended Action 1. Check the keyboard connection. If disconnected: power down the computer, reconnect the keyboard, power up the system, then retest. 2. Replace the keyboard and retest. 3. Replace the system board and retest. 400 - 499, Parallel Printer Test Error Codes The 400 series of diagnostic error codes identifies failures with parallel printer interface board or system board functions. Corrective action may require replacement of the serial/parallel interface board or the system board assembly. Table 3-6 Parallel Printer Test Error Codes Error Code 401-XX 402-XX 403-XX 498-XX Description Printer failed or not connected. Printer data register failed. Printer pattern test failed. Printer failed or not connected. Recommended Action 1. Connect the printer and retest. 2. Check the power to the printer and retest. 3. Install the loopback connector and retest. 4. Check the switch on the serial/parallel interface board (if applicable) and retest. 5. Replace the serial/parallel interface board (if applicable) and retest. 6. Replace the system board and retest.