Lexmark X342N Service Manual - Page 51

Paper feed service checks, Paper jam error indication during POST

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7003-XXX Paper feed service checks Paper jam error indication during POST FRU Exit sensor Input sensor Input sensor #1 (under print cartridge assembly) and Input sensor #2 (manual) Action If the exit sensor flag is not resting within the paper exit sensor during POST, the MFP displays a paper jam message. Make sure the flag is operating freely and is correctly installed. Make sure the input paper feed sensors are working properly. A stuck or incorrectly installed sensor causes this error. Paper picks during POST and/or continuously FRU ACM (auto comp mechanism or paper feed) clutch Manual feed clutch Action Check the ACM clutch for wear. The solenoid interacts with the clutch to control the motion of the pick tires. If the ratchet teeth of the ACM clutch assembly are worn or broken, the solenoid may not stop the ACM from rotating. Replace the ACM clutch assembly if necessary. Check the manual feed clutch for the same damage. Paper picks but stops half way through the MFP FRU Input sensor #1 (under print cartridge assembly) and Input sensor #2 (manual) Action Make sure the input sensors are working properly. Check for a broken or stuck flag on the input sensors. Make sure the cables are seated on the controller card at J20 (Tray 1 input) and J18 (manual input). Check for less than +5 V dc on pin 1 at J20 (Tray 1 input) and pin 3 at J18 (manual input sensor). • If correct, replace the input paper feed sensor. • If these voltages are not correct, replace the controller card. Paper never picks FRU Paper feed (pick tires) Paper tray Action Open the left cover, and verify the solenoid and clutch are functioning when an attempt is made to feed the paper. Make sure the rubber tires are installed and clean. Replace if necessary. Check the rear guide in the paper tray for proper adjustment. Diagnostic information 2-29

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Diagnostic information
2-29
7003-XXX
Paper feed service checks
Paper jam error indication during POST
Paper picks during POST and/or continuously
Paper picks but stops half way through the MFP
Paper never picks
FRU
Action
Exit sensor
If the exit sensor flag is not resting within the paper
exit sensor during POST, the MFP displays a paper
jam message. Make sure the flag is operating freely
and is correctly installed.
Input sensor
Input sensor #1 (under print cartridge assembly)
and
Input sensor #2 (manual)
Make sure the input paper feed sensors are working
properly. A stuck or incorrectly installed sensor
causes this error.
FRU
Action
ACM (auto comp mechanism or paper feed)
clutch
Manual feed clutch
Check the ACM clutch for wear. The solenoid
interacts with the clutch to control the motion of the
pick tires.
If the ratchet teeth of the ACM clutch assembly are
worn or broken, the solenoid may not stop the ACM
from rotating. Replace the ACM clutch assembly if
necessary.
Check the manual feed clutch for the same damage.
FRU
Action
Input sensor #1 (under print
cartridge assembly) and
Input sensor #2 (manual)
Make sure the input sensors are working properly.
Check for a broken or stuck flag on the input sensors.
Make sure the cables are seated on the controller card at J20 (Tray 1
input) and J18 (manual input).
Check for less than +5 V dc on pin 1 at J20 (Tray 1 input) and pin 3 at
J18 (manual input sensor).
•
If correct, replace the input paper feed sensor.
•
If these voltages are not correct, replace the controller card.
FRU
Action
Paper feed (pick tires)
Paper tray
Open the left cover, and verify the solenoid and clutch are functioning
when an attempt is made to feed the paper.
Make sure the rubber tires are installed and clean.
Replace if necessary.
Check the rear guide in the paper tray for proper adjustment.