Canon FC220 Service Manual page 39

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