TroubleshootingService Manual 7-1777. Troubleshooting7.1 Paper Feeding Problems7.1.1 Wrong Print Position• Description Printing begins when the paper is in the wrong position.Check and Cause SolutionA defective feed sensor actuator can cause incorrect tim -ing.Replace the defective actuator7.1.2 JAM 0• Description 1. Paper has not exited from the cassette.2. Jam-0 occurs if the paper feeds into the printer .PTLPICK/RPRCRDRSRTR FREmpty SensorOPCL S UFuser Toner CartridgeEXITSensorFeedSensorMP SensorCheck and Cause Solution1. Check the Pickup Solenoid by usingEngine Test Mode : Diagnostic Mode.2. Check if the friction pad is loose inthe paper tray.3. Check the surface of the roller-pickupfor foreign matter.4. If continuous clusters occur, checkwhether the assembly slot betweenshaft-pickup and housing-pickupbecome open or is broken away.5. If the paper feeds into the printerrand Jam 0 occurs, cheek diagnosticmode to check feed-sensor of theengine board.1. Replace the solenoid.2. Replace the holder pad Assembly or ifnecessary.3. Clean with soft cloth dampened withIPA(Isopropyl Alcohol) or water.4. Replace the Roller-Pickup Ass’y.