Diagnostic information 2-129
7526
920.23—POST error service check
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 cable in connector JDX1.
Did the error clear?
Problem resolved. Go to step 2.
2
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 4-157.
Go to step 3.
3
1. Remove the right cover. See “Right
cover removal” on page 4-38.
2. Check the MPF/duplex motor cable in
connector JDX1 for pinch points and any
other damage to the cable or connector.
Check both ends of the cable.
Is the cable damaged?
Replace the MPF/duplex
motor cable. See
“Multipurpose feeder
(MPF)/duplex motor
cable removal” on
page 4-125.
Note: Make sure to verify if
the new cable is working
properly first. Route the
cables properly only when
you have verified that the
cables are working
properly.
Go to step 4.
4
1. Replace the MPF/duplex motor assembly.
See“Multipurpose feeder (MPF)/duplex
motor cable removal” on page 4-125.
Note: Before replacing a motor, always
verify if the new part is working properly
by connecting it outside of the machine,
2. POR the printer and check if the error is
gone.
Did the error clear?
Problem resolved. Replace the system board.
See “System board
removal” on page 4-157.
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