User manual

95.08.23.11.31
Color LaserWriter 12/600 PS Basics & Theory 1–147
Outline of Electrical Circuit
The sheet feeder is electrically controlled by the sheet feeder controller
board in the sheet feeder.
This board provides serial communications with the mechanical
controller in the printer and outputs signals to drive the loads of the
motors and the solenoids.
The power supply for the sheet feeder consists of +24 VDC generated
by the internal power source and +5 VDC supplied by the printer.
The following block diagram shows the correlation between the sheet
feeder and the printer.
Sheet
Feeder
Controller
Board
+24 V
M6
Cassette
Size-Sensing
Board
Mechanical
Controller
Board
in Printer
+5 V
Power
Supply
PS352
SL351
Cassette
Paper
Sensor
Sheet Feeder
Pickup Sensor
Cassette Feed
Solenoid
Sheet Feeder
Motor