Lexmark C750 Service Manual - Page 208

5060-00x INPUT TRAY TESTS Feed Test This test lets you observe the paper path as media is feeding through the printer. The upper front door, used to access the print cartridge, cannot be opened during the feed test. To observe the paper path, you must open the lower front door, used to access the envelope feeder or MPF. No information is printed on the feed test pages since the laser isn't engaged during this test. Note: This test can run using any of the paper or envelope sizes supported by the printer. The pages are placed in the default output bin, however, the Feed Test menu lets you select the input source. To run the Input Tray Feed Test: 1. Select Input Tray Feed Test from the INPUT TRAY TESTS menu. 2. Select the input source from the sources displayed on the Feed Test Menu. All installed sources are displayed. 3. Select either Single (feeds one sheet of media from the selected source) or Continuous (continues to feed from the selected source until Return or Stop is pressed). 4. Press Return or Stop to exit test. Sensor Test This test can be used for either 500-sheet trays or 2000-sheet trays. 500-sheet trays To run the Sensor Test for 500-sheet trays: 1. Select Sensor Test from the INPUT TRAY TESTS menu. • Sensor L1=Input Tray level/empty Sensor 1 • Sensor L2=Input Tray level/empty Sensor 2 • Sensor P=Input Tray Pass Thru Sensor 2. Once this message appears, you 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, CL displays, when the sensor is open, OP appears. Tray sensors are supported by the following sources: Pass thru sensor Not present Yes Yes Yes Not present Source Tray 1 Tray 21 Tray 31 Tray 41 Multipurpose Feeder 1 L1 Yes Yes Yes Yes Yes L2 Yes Yes Yes Yes Not present 2000-sheet trays may be in this position. See "2000-sheet trays". 3. Press Return or Stop to exit the test. 3-24 Service Manual