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4026-0XX
FRU
3
Input Sensor
Flag
4
Input Sensor
Action
Check the flag for damage, especially at the
front edge, Be sure the flag moves freely.
Replace the flag as necessary.
Be sure the input sensor is correctly installed
and the sensor/solenoid cable is properly con-
nected.
Disconnect the input sensor cable from the CN3
connector on the engine board. The voltage at
CN3-1 measures between +4.5 V dc and +5.5 V
dc. If incorrect, replace the engine board.
If correct, reconnect the input sensor cable at
CN3. Monitor the voltage at CN3-3 while moving
the sensor flag in and out. The voltage changes
from +2 V dc to 0 V dc. If incorrect, check the
input sensor/solenoid cable continuity. If cable
continuity is incorrect, replace the paper feed
frame assembly. If cable continuity is correct,
replace the following FRUs one at a time in the
order shown:
Input Sensor
Engine Board
Diagnostic Information 2-21
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