Xerox 4400DT Service Manual - Page 76

Output Tray Full Troubleshooting Procedure (cont'd.) Step Actions and Questions Yes No 5 1. Enter Service Diagnostics and select Sensor Tests. Replace Go to Output 2. Scroll to Output Tray Full Sensor and press OK. Engine Logic Tray Full 3. Manually actuate and deactuate the Output Tray Full Actuator. Board (RRP 9.3 on Sensor on page 3-22. Does the message on the display alternate page 6-89). between "Full" and "Not Full" as you lift and release the actuator (the indication may have a short delay because of the sensor circuit)? Tray [#] Paper is Low. Paper stack in the Paper Tray Assembly is below 50 ±30 sheets. Low Paper Troubleshooting Procedure Step Actions and Questions Yes No 1 Fill the tray in the affected position. Does the message reappear? Go to step 2. Problem solved. 2 1. Remove the affected tray Assembly. Go to step 3. Repair or 2. Push up the Low Paper Actuator manually and then release. replace the Low Paper The Low Paper Actuator moves smoothly. Sensor Assembly (RRP 3.5, page 6-32/ RRP 11.14, page 6-133). 3 1. Enter Service Diagnostics and select Sensor Tests. Replace the Go to step 4. 2. Scroll to Tray [#] Low Paper Sensor and press OK. 3. Press the Low Paper Actuator manually and then release. Engine Logic Board (RRP 9.3 on Does the message on the Front Panel display page 6-89). alternate between "Low" and "Not Low" as you press the Low Paper Actuator? 4 Check the wiring associated with the specific Low Paper Sensor. Is the wiring OK? Replace the Low Paper Sensor (RRP 3.5, page 6-32/ RRP 11.14, page 6-133) Replace the faulty wiring. Phaser 4400 Laser Printer Service Manual 2-39