Lexmark E238 Service Manual page 171

Sensor Test (input tray)
This test is used to determine if the input tray sensors are working correctly.
1. Select the Sensor Test from the Input Tray Test menu.
2. Select the input source. Only installed sources display, but may include
Tray 1, Tray 2, and Manual Feeder.
<input source>
Testing...
3. A list of sensors appears, depending upon the input source selected.
For example, if tray 2 were selected:
Tray 2
TP=OP
TP refers to tray present sensor.
P refers to pass thru sensor.
OP indicates the sensor is open.
CL indicates the sensor is closed.
Not all sources have the same set of sensors. The table below
indicates which sources should display which sensors.
Source
Tray 1
Tray 2
Manual feeder
* Only available if tray is a 550-sheet drawer.
4. Press Return or Stop to exit the test.
P=OP
Tray present (TP)
No
No
Yes
Diagnostic aids—E340 and E342n
4511-xxx
Pass thru sensor (P)
No
No*
No
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