402 - 11
Printer interrupt data, and
1.
If a printer is connected, be
controller register failed
sure it is turned ON and in
the online mode.
402 - 12
Printer interrupt and
2.
Check switch 2 on the
loopback failed
diskette/tape controller board
(see Chapter 8). *
402 - 13
Printer interrupt, loopback,
3.
Replace the printer and/or the
and data register failed
printer controller cable.
4.
Replace the diskette/tape
402 - 14
Printer interrupt, loopback,
controller board. *
and controller register
5.
Replace the system board.
failed
* 286 based COMPAQ Personal
402 - 15
Printer interrupt,
Computers only
loopback, data, and
controller register failed
402 - 16
Printer unexpected
interrupt received
403 - 01
Printer pattern test failed
------------------------------------------------------------------------------
Error
Error
Required
Code
Description
Action
------------------------------------------------------------------------------
Video Display Unit (VDU)
5yy - xx
------------------------------------------------------------------------------
501 - 01
VDU controller test failed
The following steps apply to error
codes 501 - 01 through 512 - 01:
502 - 01
VDU memory test failed
1.
Replace the VDU controller
503 - 01
VDU attribute test failed
board.
2.
Replace the VDU signal cable.
504 - 01
VDU character set test
3.
Replace VDU subassembly.
failed
4.
Replace the system board.
505 - 01
VDU 9 x 14 character cell
test
506 - 01
VDU 80 x 25 mode 8 x 8
character cell test
failed
507 - 01
VDU 40 x 25 mode test
failed
508 - 01
VDU 320 x 200 mode color
set 0 test failed
509 - 01
VDU 320 x 200 mode color
set 1 test failed
510 - 01
VDU 640 x 200 mode test
failed
511 - 01
VDU screen memory page test
failed
512 - 01
VDU gray scale test failed
