Lexmark C91 Series, Service Manual

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Service Manual
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High-capacity feeder tests
High-Capacity Paper Feed Test
Test paper feed operation.
1. Turn on the docking safety switch with a non-metallic object.
The interface cable with the printer controller board need not be
connected.
2. Close the top cover or manually activate the cover switch.
3. Load paper.
4. Wait until the paper tray stops and the pickup solenoid turns off
5. With the cover closed or with the cover switch activated, press
and hold the tray down button for more than 1/2 second.
In steps 1 and 2, paper feeding starts and is continuously fed
until the cover is opened. The test ends when the tray motor
stops and the paper ejects or the tray down button is released.
Test sequence
1. The tray motor moves the tray to the upper limit.
2. The pickup solenoid activates then de-activates.
3. When the tray down switch is pressed for longer than 1/2
second, the paper feed motor starts, the paper feed clutch
operates and feeding begins.
4. Feeding can be stopped by releasing the tray down button.