2-98 Service ManualTray x Empty displays when there is paper in the high-capacity feeder input trayThe elevator tray fails to stop at the correct position and continues to drive into thebottom frameThe elevator tray down button does not operate. The tray moves to the upperpositionService tip: Open the high-capacity feeder front door and check the black rubber bumper attached to the doorswitch spring. Be sure the rubber button is centered and not touching the sides of the hole or the switch will notfunction properly.Paper from the high-capacity feeder input tray does not reach the pass thru sensorService tip: Be sure the paper in tray is within specifications.FRU Action1 Paper out sensor flag Check the paper out sensor flag for correct operation and installation.If correct, replace the high-capacity feeder system board. (The paperout sensor is mounted on the high-capacity feeder system board.)2 Paper out sensor(on option system board)FRU Action1 Lower limit switchLower limit switch cable Check continuity of the lower limit switch. If incorrect, replace theswitch. If correct, check the switch cable. If incorrect, replace thecable. If correct, replace the high-capacity feeder option controlboard.2 High-capacity feedercontrol board Disconnect the lower limit switch cable and check the voltage at J2-1(orange). The voltage measures approximately +5 V dc. If incorrect,replace the high-capacity feeder option control board.FRU Action1 Lower limit switchLower limit switch cableHigh-capacity feedercontrol boardCheck the lower limit switch to make sure it is not closed (normallyopen). If incorrect, replace the switch. Check the lower limit switchcable for a short between pins 1 and 2. If incorrect, replace the cable.If correct, replace the high-capacity feeder control board.FRU Action1 Autocompensatorassembly Check the autocompensator pick arm rollers for sign of glazing, toneror other buildup. Replace as necessary.2 Wear strips Check the wear strips for glazing or contamination. Replace asrequired. It is advisable to replace all four wear strips at the sametime.
