Xerox 4400DT Service Manual - Page 66

Jam at Front/Rear; Open Front/Rear Cover to Clear. (E7-#: Duplex Jam) E7-0: Paper arrives at the Registration Sensor early from the Duplex Sensor. E7-1: Paper is late to the Duplex Sensor. E7-2: Paper is late off the Duplex Sensor. The Duplex Sensor is on at power-on. E7-3: Paper is late to the Registration Sensor from the Duplex Sensor. Duplex Jam Troubleshooting Procedure Step Actions and Questions Yes No 1 1. Open the printer and check for paper or other Go to step 2. Clear all obstructions in the paper path. 2. Remove the Duplex Unit and check the rear entrance chute to the Paper Handler. jammed paper, paper scraps, and Is the printer free of jammed paper, paper obstructions scraps, or other obstructions? from the printer. 2 Check the Duplex Belt, Rollers, and gears. Check for Go to step 3. Replace contamination, wear, and obstructions. components Are the Duplex rollers, gears, and belt clean and in good condition? or Duplex Unit as necessary (RRP 12.1 on page 6-141). 3 1. Reinstall the Duplex Unit and enter Service Clear the jam Problem Diagnostics. and press solved. 2. Select Engine Test Print and press OK 3. Scroll to Print Quantity and press OK. 4. Set the quantity to 15 and press Back. Back. Go to step 4. 5. Scroll to Duplex and press OK. Set duplex to ON. 6. Scroll to Print Test Pattern and press OK. Does the error code reappear? 4 1. Select Motors/Fans Tests. Go to step 5. Go to step 6. 2. Scroll to Duplex Motor High and press OK. The motor should run for about three seconds. 3. Scroll to Duplex Motor Low and press OK. The motor should run for about three seconds. Can you hear the Duplex Motor run at both speeds? Phaser 4400 Laser Printer Service Manual 2-29