2-98 Service Manual
5026
920.05—POST (power-on self test) printhead motor not connected error service check
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 4-67.
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 4-67.
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 4-90.
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
motor 1/fuser motor cable.
See “Cartridge motor 1/
fuser cable removal” on
page 4-67.
Replace the system board.
See “System board
removal” on page 4-155.
Step Questions / actions Yes No
1 1. Turn the printer off.
2. Remove the rear frame cover. See “Rear
frame cover removal” on page 4-47.
3. Reseat the cables in connector JMIRR1.
Does the error clear?
Problem resolved. Go to step 2.
2
Check the cables in connector JMIRR1 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 4-145.
Go to step 3.
Step Questions / actions Yes No
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