Lexmark 7000 Color Jetprinter Service Manual - Page 21

Paper Feed Service Check, Diagnostic Information 2-8

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4092-001 Paper Feed Service Check If your printer does not have paper jam problems, continue with the service check. If your printer does have a paper jam problem, examine it for the following before you begin the service check: • Check the entire paper path for obstructions. • Be sure there is not too much paper in the sheet feeder. • Be sure the correct type of paper is being used. • Check for static in the paper. FRU 1 System Board Action With J5 disconnected and power on, check for +30 V dc between J5-1 and ground, and between J5-3 and ground on the system board. If the voltage is not present, check for motor pins shorted to the motor housing. If you find a shorted pin, replace the motor. If you still have a failure after replacing the motor, replace the system board. Diagnostic Information 2-8

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Diagnostic Information 2-8
4092-001
Paper Feed Service Check
If your printer does not have paper jam problems, continue with the
service check. If your printer does have a paper jam problem,
examine it for the following before you begin the service check:
•
Check the entire paper path for obstructions.
•
Be sure there is not too much paper in the sheet feeder.
•
Be sure the correct type of paper is being used.
•
Check for static in the paper.
FRU
Action
1
System Board
With J5 disconnected and power on, check for
+30 V dc between J5-1 and ground, and between
J5-3 and ground on the system board. If the
voltage is not present, check for motor pins
shorted to the motor housing. If you find a shorted
pin, replace the motor. If you still have a failure
after replacing the motor, replace the system
board.