Compaq Portable II Maintenance And Service Manual page 21

402 - 07 Printer loopback, data, and control
registers failed
402 - 08 Printer interrupt test failed
402 - 09 Printer interrupt and data register
failed
402 - 10 Printer interrupt and control register
failed
402 - 11 Printer interrupt, data, and control
register failed
402 - 12 Printer interrupt and loopback failed
402 - 13 Printer interrupt, loopback and data
register failed
402 - 14 Printer interrupt, loopback and control
register failed
402 - 15 Printer interrupt, loopback, data, and
control register failed
402 - 16 Printer unexpected interrupt received
403 - 01 Printer pattern test failed
498 - 00 Printer failed or not connected
==============================================================================
Table 5-6. Video Display Unit Test Error Codes
==============================================================================
Error
Codes Error Description
------------------------------------------------------------------------------
501 - 01 Video controller test failed
502 - 01 Video memory test failed
503 - 01 Video attribute test failed
504 - 01 Video character set test failed
505 - 01 Video 80 x 25 mode 9 x 14 character
cell test failed
506 - 01 Video 80 x 25 mode 8 x 8 character
cell test failed
507 - 01 Video 40 x 25 mode test failed
508 - 01 Video 320 x 200 mode color set 0 test
failed
Positions and Switch
Settings and
Adjustments").
3. Replace the printer
and/or the printer
cable and retest.
4. Replace the multipurpose
fixed disk drive
controller board or the
multipurpose controller
board and retest.
5. Replace the system board
and retest.
Recommended Action
The following steps apply
to error codes 501 - 01
through 516 - 01:
1. Replace the video
display controller
board and retest.
2. Replace the monitor and
retest.
3. Check the VDU fuse on
the system board and
retest.
4. Replace the system
board and retest.