Lexmark C792de, Service Manual

Page: 199 / 630

Diagnostic aids
3-21
5062
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.
Disk Test/Clean
Warning: This test destroys all data on the disk and should not be attempted on a good disk. This test may run
approximately 1½ hours depending on the disk size.
1.
From the Diagnostics menu, navigate to:
DEVICE TESTS > Disk Test/Clean
A Contents will be lost warning appears.
2.
To exit the test immediately and return to DEVICE TESTS, select No and touch . To continue with the
test, select Yes and touch .
When the test starts, a progress bar appears. The test cannot be stopped or canceled once it has begun.
3.
Once the test is complete, the power indicator turns on solid and a message appears indicating whether
the test passed or failed. Press Stop (
X
) to return to DEVICE TESTS.
Flash Test
This test causes the file system to write and read data on the flash to test the flash.
Warning: This test destroys all data on the flash because the flash is reformatted at the end of the test.
1.
Select Flash Test from DEVICE TESTS From the Diagnostics menu, navigate to:
DEVICE TESTS > Flash Test
A
Contents will be lost
warning appears.
2.
To exit the test immediately and return to DEVICE TESTS, select No and touch . To continue with the
test, select Yes and touch .
When the test starts, a progress bar appears. The test cannot be stopped or canceled once it has begun.
3.
Once the test is complete, the power indicator turns on solid and a message appears indicating whether
the test passed or failed. Press Stop (
X
) to return to DEVICE TESTS.
CAUTION
These sensors are near high voltage terminals to the print cartridge. Use a nonconducting
item to toggle these switches and not your hand.