User manual

95.08.23.11.29

Color LaserWriter 12/600 PS Basics & Theory 1–28

Outline of Drive System

The printer has six motors: the pickup motor, main motor, drum motor,

toner carousel motor, cleaning brush motor, and scanner motor. See

“Motors/Fans/Heaters” in the Parts chapter for additional information.

Pickup Motor

(M1)

The pickup motor is a two-phase stepping motor in the paper pickup

block and is controlled by the cassette pickup board. The pickup motor

provides mechanical drive to the following parts:

• Cassette pickup roller

• Separation roller

• Registration roller

• Manual feed pickup roller

• Manual feed paper lifting cam

• Feed rollers 1 and 2

About the

Printer Drive

Assembly

The printer drive assembly houses three separate drive trains for main

motor M2, toner carousel motor M3, and drum motor M4. Their

delivery points and destinations are as shown:

Main motor (M2) drive train

Fuser assembly

Paper delivery assembly (via the delivery drive assembly)

Waste toner screw

Transfer drum peripherals

Toner carousel motor (M3) drive train

Toner carousel rotation

Toner cartridge press (via cartridge press drive gear)

Developing cylinder rotation (outer gear)

Drum motor (M4) drive train

Photosensitive drum (coupling at the center of the gear)

Transfer drum