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3.
System switches
The following diagram shows the multi system, selection circuit of this chassis.
The description
on the following page, describe these switches which are controlled by IC701
(CPU) output.
NTSC
Band Limitter
5
101 (TDA8362
F
in
V ir
TV
011[
HUE
SECAM
REF.
;IF
in
CHROMA IE
IDENT
(Time Base
13
:
NH
f' {
. .
$3
W8
j
u3-
. . . . .. . .. . . . . . . . . . . . . . . . .
6.OMHZ Filter +5-%
S9
(Q155)
5.5 MHz Filter J-c%
S8
(Q154)
.
4,5 MHz Filter +h-
SIF Filter
S7
(Q152)
1"""'""""""""-""--/
S2
R=
lE
1:
42
41
.......
. . . . ;
I
+
........
(Q203)
;
IC280
(SECAM)
>' . . . . . . . . . . . . . . . . . .
z+
.............................................. ......................
IC701(CPU)
:
-'o"'
IDENT
4.5 3g------.--.o;5:.-
5.5 .38..-.-.--.-----; 1
Go 37
;
::
$.43
65 36.
;
~
:::
:~
3.58
:!
:!
50/60 ID
,:/
::
:::
2
:::
;;:
,,:
................................................... .
........................................................
:
.....
_
V-SYNC. Pulse
(for OSD)
AA1-A
AAl-A
-20-
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