Xerox 3450D Service Manual - Page 39

Paper Path of the Printer Papers that meet the specifications may be fed from Trays 1 and 2, or the optional Tray 3. If you use thick paper (from the RCP Menu) with a weight of more than 105 g/m2 (60 lb), you must insert the paper into Tray 1 and select the paper type. Paper will exit the printer to the face down top tray. A door at the rear of the printer provides access for jam clearance. The diagram below shows the paper path through the Phaser 3450 Laser Printer and identifies the major components. The simplex paper path is shown in black and the duplex path is shown in grey. R 5 R 4 R 1 R 11 S 4 S 2 R 6 R 7 R1: Print Cartridge Drum R2: Transfer Roller R3: Registration Roller R4: Idle Roller R5: Tray 1 Pick Up Roller R6: Retard Roller R 3 R 8 S 1 R 9 R 12 R 10 S 3 R 2 S 5 s3450-196 R7: Feed Roller R8: Pick Up Roller R9: Heat Roller R10: Pressure Roller R11: Duplex Roller R12: Duplex Idle Roller S1: Paper Empty Sensor (Tray 2) S2: Paper Empty Sensor (Tray 1) S3: Registration Sensor S4: Exit Sensor S5: Duplex Sensor Duplex Paper Path When duplex print mode is selected, the paper is first printed on side one. When the image on side one of the paper is fused, as detected by the Fuser Exit Sensor, the drive motor reverses. The paper is fed through the duplexer and back up to the feed roller with side two positioned for printing. 2-6 Phaser 3450 Laser Printer Service Manual