Canon A-200 series Service Manual page 94

• Clock Generator Circuit
This circuit that is illustrated in the figure below generates a fundamental clock signal for control ­
ling the display adapter itself and a display monitor.
+5V
+
5V
b
>
WE·F
r -
C S 0 WE
5
A
OA
) 10
B
OB .;] 15 '\
D
R
-
--1>4
C
OC
J <}~
---"
Jv
D
OD
­
U4(lS161)
CRTC·ClK
14
+5V
ET
CY
s/I
L
EP
r -
ClK
-
lOAD
-
1
20
p
CPU/CRTC
-
ClK
Figure 6-31
OSC
OA
08
OC
OD
s/c
CRTC·ClK
CPU/CRTC
08
+
OC
WE-F
_ _ _----I
WE
Figure 6-32
91