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Paper Feed Service Checks
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 long, white, top cover actuator (4-5) at the top right of
the machine. With the toner cartridge installed, this actuator
also opens the laser shutter. To avoid exposure to the laser
beam, keep the laser shutter closed. To do this, insert a screw-
driver along the top of, and toward the rear of, the actuator until
it switches the interlock switch on the switch sensor board.
The EP cartridge can be removed when you run any paper feed test
but you must reinstall it before you clear any error codes. In order for
paper to pass through all paper stations with the cartridge removed,
you must use legal, or B4 paper. You may have to POR the machine
to clear some error codes.
Paper passes through four major assemblies in the printer:
1. Multipurpose and Envelope Feeder
2. Paper Pick-Up and Registration
3. Duplexer
4. Fuser and Delivery
Diagnostic Information 2-39
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