User manual

95.08.23.11.30
Color LaserWriter 12/600 PS Basics & Theory 1–90
Paper Pickup
Cassette
Feeding
When the print sequence command is received, the mechanical
controller drives the main motor (M2) and, 0.2 second later, also drives
the drum motor (M4) and the pickup motor (M1). Simultaneously, the
pickup solenoid (SL1) is turned on and the drive of the pickup motor is
transferred to the pickup roller, feed rollers, and separation roller. After
any multifeed pickup is eliminated by the separation roller, the paper is
fed into the printer by the rotations of feed rollers 1 and 2.
Cassette Pickup Board
Manual Feeding Pickup
Roller
Cassette
Pickup Roller
Registration
Roller
Cassette
Manual
Feed
Tray
CL3
PS1 PS2
PS301
PS8
Mechanical Controller Board
M1
PS303 PS302
Separation Roller
Feed Roller 1
Feed Roller 2
SL1
SL2
Cassette Paper Sensor Signal (CPSNS)
Transfer Drum Top Sensor Signal
(TOPREG)
Cassette Feed Solenoid Drive
Signal (CPFED)
Registration Roller Clutch Drive Signal (REGFED)
Manual Feed Solenoid Drive Signal (MPFED)
Manual Feed Paper Sensor Signal (MPPSNS)
Manual Feed Paper Size Sensor Signal (MPSSNS)
Paper Leading-Edge Sensor Signal (TOPSNS)
Registration Paper Sensor Signal (REGSNS)
Pickup Motor Drive Signal