Lexmark 2050 Color Jetprinter Service Manual - Page 18

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

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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 J12 disconnected and power on, check for +24 V dc between J12-3 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. 2-8

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2-8
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 J12 disconnected and power on, check for
+24 V dc between J12-3 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.