3-32 Diagnostic Tools

Video Display Unit Test Error Codes
The 500 series of Diagnostic error codes identifies failures with video or system board
functions. Corrective action may require replacement of a video board or the system board
assembly.

Table 3-6

Video Display Unit Test Error Codes

Error Code Description Recommended Action
501-xx
502-xx
503-xx
504-xx
505-xx
506-xx
507-xx
508-xx
509-xx
510-xx
511-xx
512-xx
514-xx
516-xx
Video controller test failed.
Video memory test failed.
Video attribute test failed.
Video character set test failed.
Video 80 x 25 mode 9 x 14 character cell test failed.
Video 80 x 25 mode 8 x 8 character cell test failed.
Video 40 x 25 mode test failed.
Video 320 x 200 mode color set 0 test failed.
Video 320 x 200 mode color set 1 test failed.
Video 640 x 200 mode test failed.
Video screen memory page test failed.
Video gray scale test failed.
Video white screen test failed.
Video noise pattern test failed.
The following steps apply to error
codes 501-xx through 516-xx:
1. Replace the monitor and retest.
2. Replace the Advanced VGA
board
and retest.
3. Replace the system board and
retest.