Lexmark CS748de - 230.05-Paper Jam Error Service Check

Diagnostic information 2-71
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230.03, 230.05—Paper Jam error service check
8
1. Replace the fuser. See “Fuser removal”
on page 4-118.
2. Bring the printer up in Diagnostics Menu
(turn off the printer, press and hold
buttons 3 and 6, then turn on the printer).
3. Navigate to SENSOR TESTS > Dynamic
Sensors > Fuser Exit.
4. Open the front access door and top
access cover.
5. Activate the fuser exit sensor.
6. Did the fuser exit sensor change from
Open to Closed?
Problem resolved. Replace the system board.
See “System board
removal” on page 4-163.
Step Questions / actions Yes No
1 Check the tray for any damage.
Is the tray damaged?
Replace the tray. Go to step 2.
2
Check the MPF duplex gear for any damage.
Is the MPF Duplex gear damaged?
Replace the MPF duplex
gear. See “Multipurpose
feeder (MPF)/duplex gear
and housing removal” on
page 4-131.
Go to step 3.
3
1. Turn the printer off
2. Remove the rear frame cover. See “Rear
frame cover removal” on page 4-47.
3. Check the MPF/duplex motor cable in
connector JDX1 for proper connection to
the system board, cable pinch points, and
any other damage to the cable or
connector.
Is the cable damaged?
Replace the MPF duplex
motor cable. See
“Multipurpose feeder
(MPF)/duplex motor
cable removal” on
page 4-136.
Go to step 4.
4
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 4-163.
Go to step 5.
Step Questions / actions Yes No