Lexmark CS748de User Manual

2-100 Service Manual
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920.04—POST (power-on self test) fuser motor not connected error service check
4
Replace the transport belt assembly. See
“Transfer module removal” on page 4-179.
Does the error clear?
Problem resolved. Go to step 5.
5
Connect a new transport cable to the transfer
belt module and the system board from
outside of the machine.
Does the error clear?
Replace the transport
cable. See “Transport
cable removal” on
page 4-181.
Replace the system board.
See “System board
removal” on page 4-163.
Step Questions / actions Yes No
1 Turn the printer off, and then remove the rear
frame cover. See “Rear frame cover
removal” on page 4-47.
Reseat the cables in connectors JCARTP1)
and JCARTS1.
Does the error clear?
Problem resolved. Go to step 2.
2
Check the cartridge motor 1/fuser cable in
connector JCARTP1 and JCARTS1 for pinch
points and the cables or connectors for any
other damage.
Are the cables damaged?
Replace the cartridge
motor1/fuser cable. See
“Cartridge motor 1/fuser
cable removal” on
page 4-74.
Go to step 3.
3
Remove the right cover.See “Right cover
removal” on page 4-51. Check the cartridge
motor 1/fuser motor cable (A) for proper
connection to the EP drive assembly, pinch
points for the cable, and damage to the cable
or connector.
Is either cable damaged?
Replace the cartridge
motor 1/fuser motor cable.
See “Cartridge motor 1/
fuser cable removal” on
page 4-74.
Go to step 4.
4
1. Disconnect the cable connecting motor 1/
fuser motor cable and cartridge motor 2/
motor 3, and connect the cable to the new
EP drive assembly outside the machine.
2. POR the printer, then check if the error
remains.
Did the error clear?
Replace the EP drive
assembly. See
“Electrophotographic
(EP) drive assembly
removal” on page 4-98.
Go to step 5.
Step Questions / actions Yes No

Lexmark CS748de Specifications

General

Brand	Lexmark
Model	CS748de
Category	Printer
Language	English