Diagnostic information 2-115
7526
920.05—POST—printhead motor not connected error service check
3
1. Remove the right cover. See “Right
cover removal” on page 4-38.
2. Check the cartridge motor 1/fuser motor
cable for proper connection to the EP
drive assembly, pinch point for the cable,
and damage to the cable or connector
Is either cable damaged?
Replace the cartridge
motor1/fuser motor cable.
See “Cartridge motor 1/
fuser cable removal” on
page 4-62.
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 4-86.
Go to step 5.
5
Connect a new cartridge motor1/fuser motor
cable to the old EP drive assembly without
installing it into the machine.
Did the error clear?
Replace the cartridge
motor1/fuser motor cable.
See “Cartridge motor 1/
fuser cable removal” on
page 4-62.
Replace the system board.
See “System board
removal” on page 4-165.
Step Questions / actions Yes No
1 1. Turn the printer off.
2. Remove the rear frame cover. See “Rear
frame cover removal” on page 4-37.
3. Reseat the cables in connectors JMIRR1
and JPH1.
Did the error clear?
Problem resolved. Go to step 2.
2
Check the cables in connectors JMIRR1 and
JPH1 for pinch points and any other damage
to the cables or connectors.
Is the cable damaged?
Replace the printhead. See
“Printhead removal,
installation, and
adjustment” on
page 4-148.
Go to step 3.
3
Measure the continuity across all of the fuses
on the system board.
Are any of the fuses blown?
Replace the system board.
See “System board
removal” on page 4-165.
Go to step 4.
Step Questions / actions Yes No
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