Lexmark E238 Service Manual page 128

4511-xxx
Paper occasionally mispicks or picks multiple sheets at once
FRU
Tray 1
Tray 2 (option)
Paper pick tires
ACM clutch complete
bill of material (CBM)
Manual feed clutch
CBM
Controller card
Paper "trees," wrinkles, stacks poorly, or curls
FRU
Fuser
2-96
Service Manual
Action
Check tray for paper catch points.
If the sheet being fed stops momentarily, the
ACM applies additional vertical force, causing
additional sheets to feed.
Do not mix paper types in one tray.
Check the tires in the ACM assembly for signs of
wear or damage.
Replace the tires as necessary.
Open left cover, and observe the solenoid and
clutch actions at the ACM and manual feed
shafts as a print job is attempted.
Replace the faulty part.
Disconnect the solenoid cable at J3 on the
controller card.
Measure the resistance across cable pins 1 and
2 and then pins 3 and 4.
• The resistance should be
180–250 ohms.
• If it is not, call the next level of service.
• If the resistance is 180–250 ohms, check the
controller card. See
check" on page 2-82
Replace controller card as necessary.
Action
This problem is most likely due to a worn backup
roll. It causes the printer to run hotter than
required for the media being printed. Excessive
heat can cause paper treeing problems, poor
stacking, or curl.
"Controller card service
for more information.