Xx, 148.Xx-Motor (Mpf/Duplex) Error Service Check - Lexmark C746n Service Manual

146.xx, 148.xx—Motor (MPF/duplex) error service check
Step Questions / actions
1. Open the rear frame cover.
1
2. Reseat JDX1 cable.
Does the problem persist?
1. Remove the tray.
2
2. Check the MPF/duplex gear for any
damage.
3. Check if the MPF/duplex gear can engage
the duplex drive gear.
4. Manually turn the gear and check for any
damage.
Does the error still exist?
1. Open the front door cover.
3
2. Disengage the duplex belt connecting to
duplex drive gear/duplex rollers. The
duplex reference edge assembly should
not turn for isolation.
3. Remove the input tray.
4. Bring the printer up in Diagnostics Menu
(Turn off the printer, press and hold
buttons 3 and 6, then turn on the printer).
5. Navigate to MOTOR TESTS > Duplex >
Forward or Reverse.
6. Navigate to MOTOR TESTS > MPF Test>
Forward or Reverse.
Does the error still exist?
1. Connect a new MPF motor with cable to
4
the JDX1 connector on the system board
from outside of the machine.
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 MOTOR TESTS > Duplex >
Forward or Reverse.
Note: Perform this test for 5 to 10
seconds only.
4. Navigate to MOTOR TESTS > MPF Test>
Forward or Reverse.
Note: Perform this test for 5 to 10
seconds only.
5. Check if the motor would turn for each
test.
Does this clear the problem?
Yes
Go to step 2.
Replace the MPF/duplex
gear. See
"Multipurpose
feeder (MPF)/duplex gear
and housing removal" on
page 4-123.
Go to step 4.
Go to step 5.
5026
No
Problem resolved.
Go to step 3.
Go to step 7.
Replace the system board.
See
"System board
removal" on page 4-155.
Diagnostic information
2-55
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