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2-8 Service Manual
5055-01x
924 - Lower Fuser Thermistor Open Error
925 - High Pressure Controller Error
Step
Questions /
Actions
Yes No
1 Is connector CN44
on the printer
controller board
connected
properly?
Disconnect CN44
and turn the printer
on.
Go to step 2.
Plug the connector in
securely.
2 Is error 924
displayed?
Turn the printer off
and reconnect
CN44.
Go to step 3.
Replace the printer
controller board.
3 Power the printer
off and short pins
8 and 11 of CN44
and turn the
printer on.
Is error 924
displayed?
Replace the fuser. Replace the printer
controller board.
Step
Questions /
Actions
Yes No
1 Is connector CN42
on the printer
controller board
connected
properly?
Replace the printer
controller board.
Go to step 2.
Plug the connector in
securely.
2 Did replacing the
printer controller
board fix the
problem?
Problem solved. Replace the high
voltage power board
(HVU).
Service.bk Page 8 Thursday, October 4, 2001 12:20 PM