Lexmark T652 Service Manual - Page 227

4062-XXX 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 Feed Tests from INPUT TRAY TESTS. 2. Select the input source from the sources displayed on the Feed Tests menu. All installed sources are listed. 3. 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) is pressed. This test is used to determine if the input tray sensors are working correctly. To run the Input Tray Sensor Test: 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 sources have different combinations of sensors. See the table below: Tray sensor support by source Source Tray 1 Tray 2 Tray 4 Tray 5 Multi-Purpose Feeder Envelope feeder [sensor selected]=OP displays. Empty (Input tray empty sensor) X X X X X X X Low (Input tray paper low sensor) X X X X X X X passThru (Input tray pass thru sensor) • Empty-Input tray empty sensor • Low-Input tray paper low sensor • passThru-Input tray pass thru sensor 4. Once this message displays, the servicer can manually actuate each sensor. The tray empty sensor can be actuated by hand, however a sheet of paper can be used to cover the pass thru sensor. When the sensor is closed, Closed displays; when the sensor is open, Open displays. 5. Press Back or Stop to exit the test. OUTPUT BIN TESTS Feed Tests (output bins) Diagnostic aids 3-15