Lexmark W840 - Input Tray Tests; Feed Tests (Input Tray); Sensor Test (Input Tray)

3-10 Options Service Manual
4024-XXX
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 ( ) is pressed.
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:
4. The servicer can manually actuate the selected sensor, and Open or Closed displays.
Press Back () or Stop ( ) to exit the test.
Tray sensors support by source
Input source
Sensor
Pre-feed
Feed-out
Media out
Media level
HCF unit
docking
HCF tray set Media size L
Media size R
Tray 1 ✓ ✓ ✓
Tray 2
✓ ✓ ✓ ✓
Tray 3 ✓ ✓ ✓ ✓
Tray 4
✓ ✓ ✓ ✓
Tray 5 ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Multipurpose
tray
✓