Inputs To Dc Controller - Canon FC220 Service Manual

CHAPTER 2 BASIC OPERATION
E. Inputs to DC Controller

1. Inputs to DC Controller (1/2)

Door switch
AC power
supply
Density
correction
switch
SW606
(PC420/430/
(bottom: lightens)
FC220)
Power switch
Density
adjustment
VR601
dial/lever
Control panel PCB
2-6
COPYRIGHT © 1998 CANON INC.
Delivery door switch
SW1 SW2
0 1 2
J601
(top: darkens)
-20(-15)
J601
-2
J601
-1
SW601
( )
SW602 J601
+
( ) -19
SW603
J601
(C/S)
-15
SW605
(AE)
J601
SW604
-14(-10)
+5V
J601
+5V
-21(-16)
J601-13(-8)
J601-22(-17)
Figure 2-101E
CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
DC controller/DC power supply PCB
J104
J103
J202
-3
DGT 2 Oscillation signal (output)
J202
-21
Press on any key or density
KEYR 2
J202
correction switch allows input
-22
of oscillation signal.
KEYR 3
(PC420/430/FC220 only)
J202
-4
DGT 0
Oscillation signal (output;
J202
PC420/430/FC220 only)
-8
DGT 1
J202
-9(-8)
PWSON When '0', power switch goes ON.
5V
J202
-2
Turning density adjustment dial varies
J202-10
voltage. (turn to darken brings it closer to 0V)
J202-1
Note: The pin No. in parentheses refers
to the PC400/FC200.