Lexmark X642e Service Manual page 150

7002-xxx
294.02 Error code service check
ADF exit jam sensor (A) off.
Note: Before starting this service check, make sure the sensor cable is installed correctly.
FRU
1 ADF—jammed media
2
ADF exit sensor flag
3
ADF exit sensor
4 Motor driver card
2-112
Service Manual
A
Action
Check for any signs of media or other debris that might be present in
the ADF assembly around the exit sensor flag. Remove any media or
debris. If nothing is found, go to step 2.
Check the exit sensor flag to make sure it operates freely and does
not hang or bind. If the flag does not operate correctly and cannot be
made to operate correctly, replace the complete ADF assembly. See
"ADF complete assembly removal" on page
Note: Whenever the complete ADF assembly is replaced, it is
necessary to perform scanner registration. See
registration" on page 4-4.
If the flag operates correctly, go to step 3.
Enter the Diagnostics Menu (turn on MFP while holding 3 and 6),
select SCANNER TESTS, and select Sensor Tests. Check the ADF
exit sensor for correct operation.
Note: You can check the ADF exit sensor by moving the exit sensor
flag or by manually feeding a sheet of paper through the ADF.
If the sensor fails the test, go to step 4.
Turn the power off and disconnect CN9 on the motor driver card.
Measure the voltages in the table below:
Interval sensor—interrupter type
(normally closed)
Connector CN9 (motor driver card)
CN9—Pin 1
CN9—Pin 2
CN9—Pin 3
Note: All voltages are approximate values.
If incorrect, replace the motor driver card.
If the voltage is correct, go to step 5.
4-15.
"Scanner
0 V dc
+5 V dc
+5 V dc