Power Supply; Ac Power Supply; Dc Power Supply - Canon SADDLE FINISHER K3 Service Manual

CHAPTER 2 OPERATION OVERVIEW

9 POWER SUPPLY

9.1.1 AC Power supply

AC power comes from an external power supply through the machine's AC fuse PCB to
reach the switching regulator (SWR1). The switching regulator is turned ON/OFF by the
drive signal (REMTSWH) from the copier. When the switching regulator is ON, it supplies
the fuse PCB with 36V, 24V and 5V D power.

9.1.2 DC Power Supply

The 36V, 24V and 5V power supplies are supplied from the switching regulator to the fin-
isher controller PCB, saddle stitcher controller PCB and punch driver PCB, via the fuse
PCB (PCB6).
i. Finisher controller PCB
The switching regulator supplies power to the finisher controller PCB via the follow-
ing two micro-switches.
Notation
MSW4
MSW5
Power is supplied to tray A lifter motor (M13) via the tray proximity switch (MSW5).
ii. Punch driver PCB
The 36V power supply for the punch rotating motor (M18) is supplied from the
switching regulator to the punch driver PCB via the fuse PCB.
a. 24V Power Supply
i. Finisher controller PCB
The power supply for the stapler motor (M11) and stapler shift motor (M10) is sup-
plied to the finisher controller PCB from the switching regulator via the four micro-
switches described below.
Also, if a folding unit is mounted, power is supplied to the inlet motor (M1) and
buffer motor (M2) via the door switch (MSW10) on the folding unit.
Notation
MSW1
MSW7
MSW2
MSW6
2-86
COPYRIGHT© 2001 CANON INC.
Tray safety switch (front)
Tray safety switch (rear)
T02-901-01
Front cover switch
Stapler safety switch (rear)
Swing guide safety switch
Stapler safety switch (rear)
T02-901-02
2000 2000 2000 2000 CANON SADDLE FINISHER K3/K4 REV.0 MAR. 2001
Switch name
Switch name