Lexmark CS748de User Manual

3-20 Service Manual
5026
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Printhead Tests
Mirror Motor Test
1.
Select PRINTHEAD TESTS from the Diagnostics Menu.
2. Select Mirror Motor Test.
The panel displays Motor Running.
After the test completes, the panel displays either Pass or Fail.
To stop the test, Touch Back or press .
Servo Laser Test
1.
Select PRINTHEAD TESTS from the Diagnostics Menu.
2. Select Servo Laser Test.
The panel displays Motor Running. After the test completes, the panel displays either Pass or Fail.
To stop the test, Touch Back or press .
Device Tests
Note: These tests only appear if the flash or disk option is installed.
Dynamic
sensors
Fuser Exit Open/Closed Open the top access cover. Activate the fuser
exit flag. The sensor should change state.
Input Open/Closed Remove the paper tray 1. Activate the input
sensor flag. The sensor should change state.
Door Open/Closed Open the front door. The sensor should
change state.
Narrow Media Open/Closed Test the MP feeder tray by inserting a sheet of
paper, and pushing up to sensor. The sensor
should change state.
K Toner Open/Closed Remove the black toner cartridge. Shine a
flashlight on the toner level sensor. The
sensor should change state.
M Toner Open/Closed Remove the magenta toner cartridge. Shine a
flashlight on the toner level sensor. The
sensor should change state.
C Toner Open/Closed Remove the cyan toner cartridge. Shine a
flashlight on the toner level sensor. The
sensor should change state.
Y Toner Open/Closed Remove the yellow toner cartridge. Shine a
flashlight on the toner level sensor. The
sensor should change state.
TPS (toner patch
sensor)
Open/Closed Open the front access door. Slip a piece of
paper between the TPS and the transfer
module. The sensor should change state.
Bubble Open/Closed Open the front door. Activate the fuser entry
flag. The sensor should change state.
Dynamic MPF Open/Closed Test by removing the MPF pick arm and
activating the paper present sensor or remove
the tray and shine a flashlight on the paper
present sensor.
Other Sensors
Bin Full Test Open/Closed Move the bin full sensor flag (located on the
fuser) up and down to toggle the sensor state.
Sensor type Sensor name Possible values Sensor activation

Lexmark CS748de Specifications

General

Brand	Lexmark
Model	CS748de
Category	Printer
Language	English