Canon PC300 Service Manual page 31

OPERATIONS AND TIMIN
2. inputs to DC Controller (2/2)
Delivery detection PCB
Delivery detection
J801
J603
Fixing heater
surface
temperature
detection 4
PD601
AE sensor/
intensity sensor
Copyboard
position
detection
Motor rotation
detection
Motor rotation detection PCB
Control panel PCB
J905
3-4 COPYRIGHT © 1984 CANONINC.
4601 J202
{>| See p. 3-27 and -29.
Pick-up
detection
Oscillation signal (output)
When Q801 detects copy paper,
oscillation signal (DGT1) is input.
When surface temperature of fixing
heater increases, voltage lowers
Oscillation signal (output)
When Q902 detects copyboard
start position or reversal position,
oscillation signal (DGTO) is input.
Clock pulses corresponding to
revolution of main motor are
DGT2 Oscillation signal
(output)
KEYRO When Q131 detects
copy paper, oscillation
signal (DGT2) is input.
Note: The pin No. in parentheses refers to
Figure 3-4
the PC300/FC210.
CANON PC300320325, FC210/230 REV.0 JULY 1994 PRINTED IN JAPAN (IMPRIME AU JAPON)