Lexmark E320 Service Manual - Page 111

Paper feed service checks Paper jam error indication during POST 4500 FRU Exit sensor flag Input paper feed sensor (registration sensor) Action If the exit sensor flag is not resting within the paper exit sensor during POST, the printer displays a paper jam message. Make sure the flag is operating freely and correctly installed. Make sure the input paper feed sensor is working properly. A stuck or incorrectly installed sensor causes this error. Paper picks during POST and/or continuously FRU Paper feed clutch assembly Action Check the pick roller clutch for wear. The solenoid interacts with the clutch controlling motion of the pick roller. If the cam surface of the pick roller clutch assembly is worn, the solenoid may not stop the pick roller from rotating. Replace the paper feed clutch assembly if necessary. Make sure the spring on the solenoid is properly installed. If the spring is improperly installed or missing, the pick roller will continuously pick paper. Diagnostic information 2-81