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Diagnostic Information 2-31
24xx
Pull Tractor Sensor Service Check
The pull tractor sensor detects the tractor in the pull position and
disables load/unload and auto tear-off. A failed sensor may prevent
load/unload from functioning, with the tractor in the push position.
FRU Action
1 Pull Tractor
Sensor
With the tractor in the push position, press
Load/Unload several times while alternately
holding down and releasing the left pull tractor
actuator. The paper should load and unload
when the actuator is not held down, and should
not load or unload when the pull tractor
actuator is held down.
If the paper does not move correctly,
disconnect CN3 from the logic board.There
should be continuity from CN3-1 and CN3-2
when the left pull tractor actuator is pressed,
and infinite resistance when the actuator is not
pressed. Replace the sensor if necessary.
If the sensor is good but the paper still does not
move correctly, replace the logic board and
reset the “Bidirectional Print Adjustment”
on page 4-4.