Lexmark MX610 Service Manual page 198

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Scan 1st sensor (paper feed sensor)
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Paper FB long
To test a flatbed or ADF sensor, perform the following steps:
1
Navigate to Scanner Tests > Sensor Tests > <sensor to test>. The following is displayed:
2
Select the sensor to be tested.
3
Actuate the sensor you selected.
The screen will toggle between 0 and 1 if the sensor is properly functioning.
4
Select Exit to leave the test.
To test the Paper FB long test, place a sheet of legal paper on the flatbed and close the cover. If the sensor is working
properly, the indicator will change from 0 to 1.
To test the Home sensor, perform the following steps:
1
Exit the sensor test.
2
Open the flatbed cover.
3
Use the carriage motor test to move the carriage out of the home position.
4
Close the flatbed cover.
5
Enter the sensor test. If the home sensor is working properly, then a 1 will display instead of a 0.
A Stage skew sensor (paper skew)
B Paper present
C Interval sensor
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