Service LED interpretation If the 2,000-sheet input unit is working properly, it will pick up paper from tray 4 and expel it; the bottom service LED will flash regularly every 0.5 seconds. Table 47. Patterns of LED flashing (2-second pause between each pattern) Long (1 sec) Short (0.3 sec) Description Recommended action 3 1 Lifter malfunction Verify that the tray lifts freely by lifting it by hand. Verify that the paper size plates are installed correctly (in the same corresponding slots) and are not bent. If neither of these is the problem, replace tray 4. 2 1 Registration sensor delay jam The media does not reach the sensor. Open the VTU door and remove the media.
Replace the paper feed (VTU) assembly or the paper pick-up assembly. 2 2 Registration sensor stationary jam/initial jam Open the VTU door and remove the media. Check the sensors and replace the corresponding field replaceable unit. 2 3 Jam sensor delay jam The media did not reach the sensor. Open the VTU door and remove the media. Replace the paper feed (VTU) assembly or the paper pick- up assembly. 2 4 Jam sensor stationary jam/initial jam Open the VTU door and remove the media. 1 1 VTU door is open Close the door. 1 2 Tray 4 is open Close the tray. Wrong paper size loaded Load the correct size of paper or check sensors. 1 3 No paper in tray 4 Load paper or check sensors.
Note If the LEDs do not turn on, replace the paper deck PCA or the power supply. 472 Chapter 7 - Troubleshooting EN