2-124 Service Manual
7002-xxx
Cover closed sensors service check—flatbed
Note: Check for correct installation of the sensor cable before proceeding with this service check.
Note: Both the cover closing sensor (A) and the cover closed (B) sensor are located in the ADF assembly.
FRU Action
1 Flatbed cover closing and
flatbed cover closed
sensors
Enter the Diagnostics Menu (turn on MFP while holding 3 and 6),
select SCANNER TESTS, and select Sensor Tests. Check for
correct operation of the senors by opening and closing the ADF
scanner assembly. If incorrect, go to step 2.
2
Flatbed closed and flatbed
closing actuators
Check the flatbed actuators for any signs of a broken, damaged, or
missing part. Replace either actuator if damaged or missing.
3
Flatbed cover closed and
closing sensors
Turn the power off, disconnect the cable to CN7, and measure the
voltages at CN7 on the card. The voltages should measure as shown
in the table below:
If any of the voltages are incorrect, replace the motor driver card. If
the voltages are correct, go to step 4.
4
Flatbed cover closing/
closed sensors cable
Check continuity of the flatbed cover closing/closed sensor cable. If
incorrect, replace the complete ADF assembly. “ADF complete
assembly removal” on page 4-15.
Note: Whenever the complete ADF assembly is replaced, it is
necessary to perform scanner registration. See “Scanner
registration” on page 4-4.
If correct, replace the failing sensor.
A B
Paper length sensor—reflective type
(normally closed)
Connector CN7 (motor driver card)
CN7—Pin 1 0 V dc
CN7—Pin 2 +5 V dc
CN7—Pin 3 +5 V dc
CN7—Pin 4 0 V dc
CN7—Pin 5 +5 V dc
CN7—Pin 6 +5 V dc
Note: All voltages are approximate values.
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