Lexmark Optra N 4040, Reference Handbook

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Laser Printer Reference Handbook
4040
Diagnostic Aids
This printer has three different methods of running diagnostics.
The printer can run internal diagnostics tests. These tests are in the
same format as the other Optra models and are described in this
chapter.
The printer may be tested without the controller card. The basic engine
test will isolate any a failure to either the engine or the controller card.
If the printer is configured with the optional sheet feeder or any of the
internal options, remove the option(s) and run one of the three
diagnostic methods to determine where the problem is located.
Interlock Override
It is easier to troubleshoot paper feed problems if you override the top
cover and delivery door interlock when you run paper feed tests in the
diagnostic mode. To do this:
1. Access the paper menu through the operator panel and select
submenu Output Bin. Select Side to exit the paper through the
side output bin. Remember to return this to the original setting
when you are finished.
2. Remove the top cover.
3. Locate the switch sensor board and insert a screwdriver under
the switch actuator and on top of the white top cover interlock
actuator arm. Because this actuator controls the shutter as well
as the cover interlock be sure you insert the screwdriver under
the switch and not push the top cover lock actuator arm back into
the switch.
The EP cartridge can be removed when you run any paper feed test but
you must reinstall it before you clear any error codes. You may have to
POR the machine to clear some error codes.
Basic Engine Test
This test eliminates the controller card as the source of a malfunction.
1. Turn the printer off.
2. Disconnect the controller card by sliding it to the rear 1 inch. The
display will not function until the controller card is reconnected.
3. Turn the printer on, and observe the POST sequence. If the
printer completes POST, it is functioning properly.
4. Insert a small screwdriver through the small 1/4 inch square hole
in the right, top, rear side cover.