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 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 "Controller card service check" on page 2-82 for more information. Replace controller card as necessary. Paper "trees," wrinkles, stacks poorly, or curls FRU Fuser 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. 2-96 Service Manual