COPYRIGHT© 2001 CANON INC.
2000 2000 2000 2000
CANON SADDLE FINISHER K3/K4 REV.0 MAR. 2001
2-83
CHAPTER 2 OPERATION OVERVIEW
7.1.9 Punch power supply
The power supply route for the punch is illustrated below. 36VPNH and 24VPNH, sup-
plied by the punch driver PCB, are turned ON/OFF by the PC_POWER_ON signal and the
PFANON signal from the finisher controller PCB. The PNHON signal can be turned ON/
OFF by the user, using SW971-1 on the switch PCB.
The 5V power supply for sensor drive is turned ON/OFF by the PNHON signal
PC_POWER_ON. 36VPNH, 24VPNH and 5V are supplied from the punch driver PCB to
each load.
F02-701-15
Finisher
controller
PCB
Fuse box PCB
Punch driver PCB
PCH_Kill
PCH_POWER ON
24VPNH
5V
Motors
Fans
Sensors
LEDs
Q751
Q752
Q750
IC114
OPSW board
SW971-1
Sensors
Q757