Lexmark WinWriter 150c Service Manual - Page 19

Paper Feed Service Check, Be sure there is not too much paper in the sheet feeder.

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4077-001 Paper Feed Service Check If your machine does not have paper jam problems, continue with the service check. If your machine 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 +24 V dc between J5-3 and ground, and between J5-4 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 10

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Diagnostic Information
10
4077-001
Paper Feed Service Check
If your machine does not have paper jam problems, continue with
the service check. If your machine 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 +24
V dc between J5-3 and ground, and between J5-4
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.