HP 9020 Service Manual page 222

C-4
Error Messages
Error
DA
SA Code Definition
Printer
6 0 OOOXXOO Problem indicated by status byte XX defined below.
6
0 OOOOVYOI Timed out while waiting for printer to complete self test
6 0 0000VY02 Flag did not go false after reading FRO
6 0 0000VY03 Timed out while waiting for flag
6 0 0000VY04 Failed loopback test
6 0 0000VY05 Printer not responding to poll
6
0 0000VY06 Printer failed self test
6 0 0000VY07 Printer responds to polls when disabled
6 0 0000VY08 Printer status false
6
0 0000VY09 Printer enabled for poll response after reset
6 0 OOOOVYOA Keyboard PFW interrupt cannot be cleared
XX = Printer status byte in following format:
PSFL DSTF MSTF OOPP HDFL VHLO PTTH HDTH
where: PSFL = Power supply failure; motor drive board bad
DSTF = Dangerous self test failure; potential damage to printhead
MSTF
=
Minor self test failure; no potential damage to equipment
OOPP = Out of paper
HDFL = Printhead control line failure; BURN and/or CLEAR line stuck high or low
VHLO = Printhead supply voltage too low
PTTH = Power transistor on motor drive board too hot
HDTH
=
Printhead too hot; temperature in printhead exceeded 70°C
VY
=
Irrelevant
Error
DA SA Code
Definition
Keyboard
6 2 00000001 Failed loopback to FR15
6
2 00000002
Keyboard not responding to poll
6 2
00000003
Keyboard failed self test
6 2 00000004 Battery low condition detected
6
2 00000005
Keyboard not responding with SRQ bit
6 2 00000006 Keyboard not forcing status false
6 2 00000007 Reading FRIO did not clear keyboard poll response
6 2
00000008
Power fail warning bit set