Lexmark 4059-XXX User Manual
Page 64

2-37
4059 Service Manual
4059-XXX
230 Paper Jam - Check Duplex message displays. The page is not
duplexed and only exits half way out of the redrive.
FRU
Action
1
Duplex Stepper Motor
Check the stepper motor cable for
cuts or pinched wiring. Check the
routing of the motor leads along the
left side of the bottom tray. Check for
correct installation of the motor cable
connector at J3 on the system
board. Check for any shorts between
each pin of the motor cable and the
motor housing. If shorts are found,
replace the motor. Check the
resistance of the stepper motor
between J3-1 (Stpmtr A-) to J3-2
(Stpmtr A+). The resistance
measures approximately 10 ohms.
The resistance between J3-3
(Stpmtr B-) to J3-4 (Stpmtr B+)
measures approximately 10 ohms. If
the resistance is incorrect, replace
the stepper motor. Check for shorts
between windings on pins J3-1 to
J3-2 and pins J3-3 to J3-4. If a short
is found, replace the stepper motor
assembly. If no short is found,
replace the duplex system board.
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