Lexmark C78x User Manual

2-22 Service Manual
5061
122.07, 122.14, and 122.15 error code service check
Fuser assembly cam position is not found.
Step Actions and questions Yes No
1 Observe the fuser drive assembly gears rotate during
POR.
Do the gears rotate?
Go to step 2 Go to step 5
2
Do the gears stop and the fuser drive assembly gears
make a loud buzzing sound?
Replace the
FRUs in the order
shown:
1. Fuser drive
assembly.
See “Fuser
drive
assembly
removal” on
page 4-46.
2. “Fuser
assembly
removal” on
page 4-44.
Go to step 3
3
Check for correct installation of the fuser control cable
to J17 on the system board. Make sure the cable is
properly connected.
Is the cable installed correctly?
Go to step 4 Install the cable
correctly.
4
Remove the fuser from the printer. Measure the
voltage at the DC fuser control connector on the LVPS
on pin 2 and 9 on the connector. The voltage should
measure approximately +5 V dc.
Is the voltage correct?
Replace the fuser
assembly. See
“Fuser
assembly
removal” on
page 4-44.
Replace the
LVPS assembly.
See “LVPS
assembly
removal” on
page 4-53.
5
Check for correct installation of the fuser drive motor
cable to connector J15 on the system board.
Is the cable installed correctly?
Go to step 6 Install the cable
correctly.
6
Remove the fuser fan to gain access to the motor
cable. Check the correct installation of the fuser drive
motor cable to connector J1 on the fuser drive motor
board.
Is the cable installed correctly?
Replace the
following FRUs in
the order shown:
1. Fuser drive
assembly.
See “Fuser
drive
assembly
removal” on
page 4-46.
2. System
board. See
“System
board
removal” on
page 4-90.
Install the cable
correctly.

Lexmark C78x Specifications

General

Brand	Lexmark
Model	C78x
Category	Printer
Language	English