Specifications

Diagnostic Tools 3-33
400 – 499, Parallel Printer Test Error Codes
The 400 series of diagnostic error codes identifies failures with parallel printer interface card or
system board functions.
Table 3-6
Parallel Printer Test Error Codes
Error Code Description Recommended Action
401-xx Printer failed or not connected.
402-xx Printer data register failed.
403-xx Printer pattern test failed.
498-xx Printer failed or not connected.
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.
500 – 599, Video Display Unit Test Error Codes
The 500 series of diagnostic error codes identifies failures with video or system board functions.
Table 3-7
Video Display Unit Test Error Codes
Error Code Description Recommended Action
501-xx Video controller test failed.
502-xx Video memory test failed.
503-xx Video attribute test failed.
504-xx Video character set test failed.
505-xx Video 80 x 25-mode 9 x 14
character cell test failed.
506-xx Video 80 x 25-mode 8 x 8
character cell test failed.
507-xx Video 40 x 25-mode test failed.
508-xx Video 320 x 200-mode color set 0
test failed.
1. Replace the monitor and retest.
2. Replace the Advanced VGA board and retest.
3. Replace the system board and retest.
continued