Lexmark X548 Series, Service Manual

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Service Manual
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Sensor Test
This test is used to verify that the sensors are working correctly for an individual input tray.
1.
Navigate to
INPUT TRAY TESTS > Sensor Test
.
2. Select the tray where you want to test the sensors. Depending on the tray selected, you may have
Empty
Sensor
,
Low Sensor
, or
Pass thru Sensor
.
Sensors will be displayed with either
Open
or
Closed
. Toggle the sensor you want to test, and note the
change of state of that sensor.
To Exit the test, press
Stop
.
BASE SENSOR TEST
These tests allow you to verify the correct functioning of the front door, input, and output sensors.
1. Navigate to
BASE SENSOR TEST
.
2. Select the sensor to test.
The following tests are available:
3. To stop the test, press .
Input Tray Empty Sensor Low Sensor Pass thru Sensor
Tray 1
✘ ✘ ✘
Tray 2 (650-sheet duo tray)
✔ ✔ ✔
MP Feeder
✘ ✘ ✘
Sensor Value How to test
Front Door Value open/
Value closed
Open and close front door. The sensor should change
state.
Standard Bin Bin empty/
Bin full
Toggle the bin full media flag attached to the redrive
unit.
Input - S1 Media clear/
Media present
Remove the media tray. Activate the input sensor flag.
The sensor should change state.
Input - S2 Remove and re-insert the media tray. The sensor
should change state.
Fuser Exit Open the front door. Activate the fuser exit flag. The
sensor should change state.
C-TMC Sensor Not closed/
Closed
Remove the cyan toner cartridge. Shine a flashlight on
the toner level sensor. The sensor should change
state.
M-TMC Sensor Remove the magenta toner cartridge. Shine a
flashlight on the toner level sensor. The sensor should
change state.
Y-TMC Sensor Remove the yellow toner cartridge. Shine a flashlight
on the toner level sensor. The sensor should change
state.
K-TMC Sensor Remove the black toner cartridge. Shine a flashlight
on the toner level sensor. The sensor should change
state.