User manual

95.08.23.11.31
Color LaserWriter 12/600 PS Basics & Theory 1–124
Fuser Cleaner
Assembly
The printer uses a cleaning assembly to clean the upper fuser roller.
This assembly comprises a cleaning belt winding roller, a cleaning belt
roller, and a rolled cleaning belt. After every seven prints, the cleaning
belt winding roller rotates and the contact surface of the cleaning belt
moves to clean the upper fuser roller. In normal operation, the cleaning
belt moves by one step each time the cleaning belt drive solenoid (SL3)
is actuated. In the transparency mode it moves by two steps.
The cleaning belt has a notch about 12" (30 cm) from its trailing edge.
When this notch is detected by the cleaning belt sensor (PS5), the
cleaning belt sensor signal (
WEBSNS) goes “H” and the DC controller
notifies the I/O controller that the cleaning belt is near its end-of-life.
The DC controller will notify the I/O controller and stop the printer
after about 500 more prints. At that point, you must replace the fuser
assembly.
Cleaning Belt
Cleaning Belt Sensor Lever
Cleaning Belt Winding Roller
Cleaning Belt Drive
Solenoid (SL3)
Cleaning Belt Roller