Input Tray Tests; Feed Tests (Input Tray); Sensor Test (Input Tray) - Lexmark W850n Service Manual

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INPUT TRAY TESTS

Feed Tests (input tray)

This test lets the servicer observe the paper path as media is feeding through the printer. A blank sheet of paper
feeds through the printer as the laser turns off during this test. The only way to observe the paper path is to open
the lower front door that is used to access the envelope or multipurpose feeder. The paper is placed in the output
bin.
To run the Input Tray Feed Tests:
1.
Select INPUT TRAY TESTS from DIAGNOSTICS.
2.
Select Feed Tests from INPUT TRAY TESTS.
3.
Select the input source from the sources displayed on the Feed Tests menu. All installed sources are listed.
•
Tray 1
•
Tray 2
•
Tray 3
•
Tray 4
•
Tray 5
•
MP Feeder
4.
Select either Single or Continuous.
•
Single—feeds one sheet of media from the selected source.
•
Continuous—media continues feeding from the selected source until Stop (

Sensor Test (input tray)

This test is used to determine if the input tray sensors are working correctly. To run the Input Tray Sensor Test:
1.
Select INPUT TRAY TESTS from DIAGNOSTICS.
1.
Select the Sensor Test from INPUT TRAY TESTS.
2.
Select the input source from the sources displayed on the Sensor Test menu. All installed sources are
listed.
3.
Select the sensor to test. Various menus have different listings of sensors, depending on the input source
or tray selected. See the table below:
Tray sensors support by source
Input source
Tray 1
Tray 2
Tray 3
Tray 4
Tray 5
Multipurpose
tray
4.
The servicer can manually actuate the selected sensor, and Open or Closed displays.
Press Back (
3-10
Options Service Manual
✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
) or Stop ( ) to exit the test.
Sensor
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓ ✓
✓
) is pressed.
✓ ✓ ✓