Lexmark C792 Family, Service Manual

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Diagnostic aids
3-21
5062
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BASE SENSOR TEST
Use the Base Sensor Test to determine that the sensors located inside the printer are operating correctly. The
following sensors can be checked using this test:
Nearly Narrow Media
Input–S1
Fuser Exit
NarrowMedia
K TMC Sensor (black)
M TMC Sensor (magenta)
C TMC Sensor (cyan)
Y TMC Sensor (yellow)
Input–D0
Input–D1
Input–D2
Fuser Bubble
Redrive Bubble
Input–S2
To run the Base Sensor Test.
1.
From the Diagnostics menu, select BASE SENSOR TEST.
A list of the sensors appears, with the status of each sensor after the sensor name.
2.
Manually toggle the sensors to verify that each sensor switches from open to closed.
DEVICE TESTS
Quick Disk Test
This test performs a non-destructive read/write on one block per track on the disk. The test reads one block on
each track, saves the data, and proceeds to write and read four test patterns to the bytes in the block. If the
block is good, the saved data is written back to the disk.
1.
From the Diagnostics menu, navigate to:
DEVICE TESTS > Quick Disk Test
•
The power indicator blinks while the test is in progress.
•
Quick Disk Test/Test Passed
appears if the test passes.
•
Quick Disk Test/Test Failed
appears if the test fails.
2.
Press Stop (
X
) to return to the Device Tests menu.
CAUTION
These sensors are near high voltage terminals to the print cartridge. Use a nonconducting
item to toggle these switches and not your hand.