Xerox 8500DN Service Manual - Page 313

Process Drive (PL4.0.14) Service Parts Disassembly Caution Replacement drives come with two pins to hold the gears in position. Use either the pins that come with replacement drives, or a paper clip, bent into a U shape to hold the gears in their proper position during removal and replacement. If the Process Drive is incorrectly installed, the printer could be damaged. See "Homing the Process Drive Train" on page 6-8. Torque the Process Drive screws to 12 in. lbs. Irreversible damage can result if these screws are over tightened. 1. Remove the Right Side Cover (page 8-5). 2. Disconnect the drum heater harness from the Drum Heater Relay Board and free other wiring harnesses from the gearbox cable restraint. 3. Pin the gears in position to maintain correct alignment on replacement. Process Drive Motor and Gearbox Hole in gear aligns with arrow on frame Holes in process drive frame aligns with holes in gears Hole in gear aligns with arrow on frame 4. Remove 3 screws and remove the Process Drive. 5. Disconnect the harness from the Process Drive motor. Phaser 8400/8500/8550/8560 Color Printer Service Manual s8500-107 8-43