Compaq P5000 Series User Manual
Page 147

Fault Messages
147
SHUTL INV CMD*
No
Fatal firmware error on 
controller board.
Contact your authorized 
customer service engineer.
1
SHUTL INV PARM*
No
Fatal firmware error on 
controller board.
Contact your authorized 
customer service engineer.
1
SHUTTLE JAM
Yes
No shuttle movement 
or shuttle moving at 
wrong speed.
Check for obstruction to shuttle, 
a twisted ribbon, or forms 
thickness lever closed too tightly. 
If fault source is not apparent, 
contact your authorized 
customer service engineer.
SOFTWARE ERROR *
Cycle power
No
Application software 
tried to perform illegal 
printer function, or 
damaged logic circuits 
found on controller 
board.
Contact your authorized 
customer service engineer.
1
STACK OVERFLOW*
No
Fatal firmware error on 
controller board.
Contact your authorized 
customer service engineer.
1
STACK UNDERFLOW*
No
Fatal firmware error on 
controller board.
Contact your authorized 
customer service engineer.
1
TCB CORRUPTED*
No
Fatal firmware error on 
controller board.
Contact your authorized 
customer service engineer.
1
UNDEF INTERRUPT*
No
Fatal firmware error on 
controller board.
Contact your authorized 
customer service engineer.
1
UNDFNED OPCODE*
No
Fatal firmware error on 
controller board.
Contact your authorized 
customer service engineer.
1
UP DRV. SHORT *
No
Hammer driver circuits 
on the boards shorted 
to ground.
Contact your authorized 
customer service engineer.
1
HAMMER COIL BAD
X, X, X,...
Yes
Coil # failed current 
test at power-up. 
Record message, clear to 
continue printing, and contact 
your authorized customer 
service represetative.
1
Before contacting an authorized customer service engineer, power off the printer, wait 15 seconds,
then power it back on and rerun your print job. If the message reappears, press CLEAR. If the fault 
message still displays, then contact your authorized customer service engineer.
Table 19. LCD Message Troubleshooting Table (continued)
Displayed Message
Can User
Correct?
Explanation
Solution
