HP 9020 CE Handbook page 40

9020 Diagnostics 5-5
Printer Self Test Error 1 Error Codes
Error
Probable
DA SA
Code
Definition
Causes
6
0
OOOOXXOO Status byte XX defined below.
6
0 OOOOYYOI Timed out while waiting for printer to complete self test
6 0 OOOOYY02 Flag did not go false after reading FRO
6 0 OOOOYY03 Timed out while waiting for flag
6
0 OOOOYY04 Failed loopback test
Logic board.
6 0 OOOOYY05 Printer not responding to poll
I10bus
6 0 OOOOYY06 Printer failed self test
6 0 OOOOYY07 Printer responds to polls when disabled
6
0 OOOOYY08 Printer status false
6 0 OOOOYY09 Printer enabled for poll response after reset
6
0 OOOOYYOA Keyboard PFW interrupt cannot be cleared
XX
=
Printer status byte (hex) in following binary format:
I
PSFL
I
DSTF
I
MSTF
I
OOPP
I
HDFL
I
VHLO
I
PITH
I
HDTH
I
where: PSFL = Power supply failure
Motor drive board
DSTF
=
Dangerous self test failure; potential damage to printhead
Motor drive board
MSTF
=
Don't care
OOPP
=
Out of paper
Out of paper
HDFL
=
Printhead control line failure; BURN and/or CLEAR line
Logic board
stuck high or low
VHLO = Printhead supply voltage too low
Motor drive board
PITH
=
Power transistor on motor drive board too hot Motor drive board
HDTH
=
Printhead too hot; temperature in printhead exceeded 70°C
Motor drive board,
External heat source
YY
=
Don't Care