Lexmark T520 Service Manual - Page 139
Duplex Sensor Test, Select Sensor Test from the Duplex Tests menu.
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UPC - 734646620000
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4520-xxx Duplex Sensor Test This test is used to determine whether or not the Duplex sensors and switches are working correctly. Select Sensor Test from the Duplex Tests menu. Manually actuate each of the duplex sensors. When the sensor/ switch is closed, CL (closed) displays, when the sensor/switch is open, OP (Open) displays. Duplex input sensor Duplex exit sensor Press Return/Stop to exit the test. Diagnostic Aids 3-7
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Diagnostic Aids
3-7
4520-xxx
Duplex Sensor Test
This test is used to determine whether or not the Duplex sensors
and switches are working correctly.
Select Sensor Test from the Duplex Tests menu.
Manually actuate each of the duplex sensors. When the sensor/
switch is closed, CL (closed) displays, when the sensor/switch is
open, OP (Open) displays.
Duplex input sensor
Duplex exit sensor
Press Return/Stop to exit the test.