Lexmark X642e Service Manual page 140

7002-xxx
290.10 Error code service check
Static jam—first scan sensor (A)
Note: Before starting this service check, make sure the first scan sensor cable is correctly installed.
FRU
1 ADF
2 First scan sensor
3 First scan sensor cable
(first scan sensor to CN10
on the MDC card)
4 Motor driver card
2-102
Service Manual
A
Action
Check for any signs of paper or other debris that might be present in
the ADF assembly over the first scan sensor. Remove any media
found over the sensor, and retry by running the scanner feed tests.
Enter the Diagnostics Menu (turn on MFP while holding 3 and 6),
select SCANNER TESTS, and select Feed Tests. If the media jams
over the first scan sensor, go to step 2.
Enter the Diagnostics Menu (turn on MFP while holding 3 and 6),
select SCANNER TESTS, and select Sensor Tests. Check the first
scan sensor for correct operation.
Note: Check the first scan sensor by manually feeding a sheet of
paper through the ADF and checking the sensor for correct
operation.
If the sensor fails the test, go to step 3.
Check to make sure the first scan cable is correctly installed at the
sensor CN10 on the motor drive card. If the cable is not installed
correctly, reinstall the cable. If installed correctly, go to step 4.
Turn the power off, and disconnect CN10 on the motor driver card.
Measure the voltages in the table below:
First scan sensor—reflective type
(normally closed)
Connector CN10 (motor driver card)
CN10—Pin 10
CN10—Pin 11
CN10—Pin 12
Note: All voltages are approximate values.
If incorrect, replace the motor driver card. If correct, go to step 5.
0 V dc
+5 V dc
+5 V dc