Lexmark 7003-050 X340n, Service Manual

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Service Manual
7003-XXX
Toner sensor service check
Transfer roll service check
FRU Action
Toner sensor
Controller card
Try a different toner cartridge.
If changing the toner cartridge doesn’t fix the problem, check pin 1 in
J17 for +5V. Pin 3 is ground. If the voltage is present, replace the
toner sensor.
If the voltage on pin 1 is incorrect, replace the controller card.
FRU Action
Transfer roll
Check transfer roll area for debris, and clean as necessary.
Verify continuity between the spring below the left side bearing and
the transfer roll shaft.
Verify continuity in the spring and the cable connection on the
LVPS/HVPS.
Inspect the roll for signs of wear or damage, and replace if necessary.