User manual

95.08.23.11.30
Color LaserWriter 12/600 PS Basics & Theory 1–75
Carousel Rotation
The carousel rotates to advance the next toner cartridge to the photo-
sensitive drum.
When the print sequence command is received from the DC controller,
the mechanical controller sets the developing rotary brake signal
(
/DEVBRK) to “H,” and the toner carousel brake clutch (CL1) to off to
release the brake. At the same time, the developing rotary drive signal
(
/DEVON) is set to “L” and the toner carousel drive clutch (CL2) is
turned on. Then the toner carousel motor starts driving the rotation of
the toner carousel.
The rotational position of the toner carousel is detected by the toner
carousel position sensor (PS4) by monitoring the number of passing
flags (see “Carousel Rotational Position Detection” below).
Toner carousel
motor M3 delivers
rotational drive
at this point.
Carousel End Panel
Internal workings of the toner cartridge rotate
independently of the housing. Internal workings
remain level throughout carousel rotation.
Photosensitive
Drum