Base Sensor Test; Device Tests; Quick Disk Test; Disk Test/Clean - Lexmark C750 Service Manual
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Also See for C750:
- User reference manual (218 pages) ,
- Parts breakdown (65 pages) ,
- Setup manual (62 pages)
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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:
•
Input – S1
•
Input – S2
•
In-Line media Sensor
•
Fuser exit Sensr
See
"Printer sensors" on page 5-3
locations" on page
CAUTION: These sensors are near high voltage terminals to the print cartridge. Use a nonconducting item to
toggle these switches and not your hand.
To run the Base Sensor Test.
1.
Select BASE SENSOR TEST from the Diagnostics Mode.
OP for open and CL for closed are displayed.
2.
Manually toggle the sensors by hand 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.
To run the Quick Disk Test:
1.
Select Quick Disk Test from the Device Tests menu.
•
The power indicator blinks while the test is in progress.
Quick Disk Test/Test Passed displays if the test passes and the power indicator turns on
•
solid.
•
Quick Disk Test/Test Failed displays if the test failed and the power indicator turns on solid.
2.
Press Go, Return, or Stop 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.
To run the Disk Test/Clean Test:
1.
Select Disk Test/Clean from the Device Tests menu.
Files will be lost/Go or Stop? is displayed to warn the user that all contents on the disk will be
lost.
2.
To exit the test immediately and return to the Device Tests menu, press Return or Stop. To continue with
the test, press Go.
If Go is selected, Disk Test/Clean/BAD:000000 00% is displayed. The screen updates periodically
indicating the percentage of test completed and the number of bad blocks found.
for locations for these sensors. See
5-4.
"Cartridge contact assembly pin
Diagnostic aids
5060-00x
3-29
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