Compaq 486 Maintenance And Service Manual page 41

1906 - 34 No data detected
1906 - 35 Power on reset occurred
1906 - 91 Power lost during test
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Table 3-12. Video Test Error Codes
=============================================================================
Error
Code Description
-----------------------------------------------------------------------------
2402 - 01 Video memory test failed
2403 - 01 Video attribute test failed
2404 - 01 Video character set test
failed
2405 - 01 Video 80 x 25 mode
9 x 14 character cell test
failed
2406 - 01 Video 80 x 25 mode 8 x 8
character cell test failed
2407 - 01 Video 40 x 25 mode test
failed
2408 - 01 Video 320 x 200 mode
color set 0 test failed
2409 - 01 Video 320 x 200 mode
color set 1 test failed
2410 - 01 Video 640 x 200 mode
test failed
2411 - 01 Video screen memory
page test failed
2412 - 01 Video gray scale test failed
2414 - 01 Video white screen test
failed
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Error
Code Description
-----------------------------------------------------------------------------
2416 - 01 Video noise pattern test
failed
2418 - 01 Video memory test failed
2418 - 02 Video shadow RAM test
failed
2419 - 01 Video ROM checksum
test failed
Recommended
Action
Replace the video board
and retest for error
codes 2402 - xx through
2432 - xx.
Recommended
Action
Replace the video board
and retest for error codes
2402 - xx through
2432 - xx.