Canon PC720 Service Manual - Page 45

Outputs, Controller

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OPERATIONS AND TIMINGNM D. Outputs from the DC Controller 1. Outputs from the DC Controller(1/2) Main motor/ main motor driver PCB Thermal fuse FU1rr Fixing heater H1 Composite power supply PCB DC controller PCB J901-1 J205-1 .4 24v -2 -2 -3 -3 - -4 +5V -5 -5 -6 -6 J2O3-7 J1O3-6 MMD J204-2 J104-6 MLOCK See p. 3-7. - J207-1 -2 AC driver J206-1 -2 J2O4-7 J104-1 HTRD Fixing heater drive signal; used to control the temperature of the fixing heater. Scanning lamp FL1 Fluorescent lamp driver Microprocessor > Communication with composite power supply PCB Primary charging roller O Developing cylinder O Transfer charging roller O Static eliminator O Highvoltage circuit 00 Noise filter 00 PCB Door switch +5V +24V tt DC power supply circuit Figure 3-105 COPYRIGHT © 1994 CANON INC. CANON PC72017401750M0 REV.O AUG.1994 PRINTED IN JAPAN ommait AU JAPON) 3- 5

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OPERATIONS
AND
TIMING
NM
D.
Outputs
from
the
DC
Controller
1.
Outputs
from
the
DC
Controller(1/2)
Main
motor/
main
motor
driver
PCB
Composite
power
supply
PCB
J901-1
J205-1
.
4
24v
-2
-2
-3
-3
+5V
-
-4
Thermal
FU1
r
r
fuse
Fixing
heater
Scanning
lamp
H1
-5
-5
-6
-6
—
J207-1
-2
J206-1
AC
driver
-2
FL1
Primary
charging
roller
O
Developing
cylinder
O
Transfer
charging
roller
O
Static
eliminator
O
00
00
Fluo-
rescent
lamp
driver
Door
switch
Noise
filter
PCB
High
-
voltage
circuit
J2O3-7
J204-2
J2O4-7
Micro-
processor
+5V
+24V
t t
DC
power
supply
circuit
Figure
3-105
DC
controller
PCB
J1O3-6
MMD
J104-6
MLOCK
See
p.
3-7.
J104-1
HTRD
Fixing
heater
drive
signal;
used
to
control
the
temperature
of
the
fixing
heater.
>
Communication
with
composite
power
supply
PCB
COPYRIGHT
©
1994
CANON
INC.
CANON
PC72017401750M0
REV.O
AUG.1994
PRINTED
IN
JAPAN
ommait
AU
JAPON)
3
-
5