Xerox 4400DT Service Manual - Page 77
Tray 2 (or Tray 3) Paper is Low., Low Paper Tray 2 or Tray 3 Troubleshooting Procedure
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Tray 2 (or Tray 3) Paper is Low. Paper stack in Tray 2 and/or Tray 3 is below 50 ±30 sheets. Low Paper (Tray 2 or Tray 3) Troubleshooting Procedure Step Actions and Questions Yes No 1 Fill the affected paper tray with fresh paper. Is the Error Message still displayed? Go to step 2. Problem solved. 2 1. Remove the paper tray from affected Feeder Go to step 3. Inspect the Assembly. 2. Manually push up and release the low paper actuator. Low Paper Actuator. Does the low paper actuator move smoothly up Repair or and down? replace as required. 3 1. Enter Service Diagnostics and select Sensor Tests. Replace the Go to step 4. 2. Scroll to Tray 2 (or Tray 3) Low Paper Sensor and Engine Logic press OK. 3. Press and release the Low Paper Actuator. 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 and release the actuator? 4 1. Switch the printer power OFF. Go to step 6. Go to step 5. 2. Remove the Left Interface Cover (RRP 1.1 on page 6-6), Left Cover (RRP 1.2 on page 6-7), and the Left Plate (RRP 1.11 on page 6-16). 3. Switch the printer power-on. 4. On the Engine Logic Board, check the voltage between P/J33 pin 8 and frame ground. Is the voltage +3.3 VDC? 5 On the Engine Logic Board, check the voltage between Replace the Replace the P/J28 pin 10 and frame ground. Engine Logic LVPS (RRP Is the voltage +3.3 VDC? Board (RRP 9.5 on 9.3 on page 6-91). page 6-89). 6 1. Enter Service Diagnostics and select Sensor Tests. Replace the Replace the 2. Scroll to Tray 2 (or Tray 3) Low Paper Sensor and press OK. 3. As you actuate the Low Paper Sensor, check the voltages at the following locations on the Engine Logic Board: IFor Tray 2, check between P/J33 pin 9 and frame ground. IFor Tray 3, check between P/J33 pin 10 and frame ground. Engine Logic Board (RRP 9.3 on page 6-89). Low Paper Sensor (RRP 11.14, page 6-133) for the affected tray. If the problem Does the voltage change from +3.3 VDC to 0.0 VDC? persists, replace the Feeder PWB (RRP 11.9, page 6-128) then the Size PWB (RRP 11.19, page 6-139). 2-40 Phaser 4400 Laser Printer Service Manual
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