COPYRIGHT © 1998 CANON INC. CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 2 BASIC OPERATION
2-7
2. Inputs to DC Controller (2/2)
DC controller/DC power supply PCB
DGT1
KEYR0
TH1
See Chap.4.
DGTO
KEYRO
+5V
MMCLK
DGT2
KEYR0
Note: The pin No. in parentheses refers to
the PC400/FC200.
Pick-up
detection
Motor rotation detection PCB
Copyboard position detection PCB
Copyboard
position
detection
AE sensor/
intensity sensor
Fixing heater
surface
temperature
detection
Delivery detection
Delivery detection PCB
Control panel PCB
Q801
Q902
Q901
TH1
J801
J603
-3
-3
Q131
When Q902 detects copyboard
start position or reversal position,
oscillation signal (DGT0) is input.
When surface temperature of fixing
heater increases, voltage lowers.
When Q801 detects copy paper,
oscillation signal (DGT1) is input.
J603
-1
-2
J621
J905
-2
-3
-1
J904
-2
-3
-1
J601
J601
-11(-6)
J601
-12(-7)
J601
-15(-10)
-1
-5
-2
-4
Motor rotation
detection
J202
-8
J202
-11
J202
-12
J202
J201
-11
-10
-12
-2
-1
-3
Oscillation signal (output)
Oscillation signal (output)
Clock pulses corresponding to
revolution of main motor are
generated.
Oscillation signal
(output)
When Q131 detects
copy paper, oscillation
signal (DGT2) is input.
PD601
PD602
Figure 2-102E