User's Manual

CHAPTER 2 BASIC OPERATION
COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-7
E. Inputs to and Outputs from the DC Controller
1. Inputs to the DC Control (1/2)
Figure 2-105
PS1
PS2
PS3
TH1
TH2
J101-1
-3
-2
J109-11
-10
-9
J102-7
-9
-8
J132-3
-5
-4
J108-4
-3
-5
J102-1
-6
J131-1
-2
SCHP
LHP
DPD
DIG3
PDP
+5V
+5V
+5V
RPD
+5V
TH1
TH2
DC controller PCB
When the scanner is in the home position, ‘1’.
(The light-blocking plate is at PS1, ‘1’.)
When the lens is in the home position, ‘1’.
(The light-blocking plate is at PS2, ‘1’.)
When PS3 has detected paper, ‘0’.
(The light-blocking plate is at PS3, ‘1’.)
When PS4 has detected paper, ‘1’.
(The light-blocking plate is at PS4, ‘1’.)
When Q751 has detected paper, ‘1’.
(The light-blocking plate is at PS751, ‘0’.)
When the surface temperature of the fixing
heater increases, the voltage decreases.
(analog signal)
When the temperature of the scanner increases,
the voltage decreases. (analog signal)
Scanner home
position sensor
Lens home
position sensor
Delivery sensor
Vertical path roller
paper sensor
Pre-registration
roller paper sensor
Fixing thermistor
Scanner thermistor
PS4
J113-1
-3
-2
SFPD
DIG2
When PS5 has detected paper, ‘0’.
(The light-blocking plate is at PS5, ‘1’.)
Single-feeder
paper sensor
(Single-feeder type only)
PS5
J62
J62J433
Q751
Sensor PCB