Sony TRINITRON KV-20FS100 Service Manual page 35

A BOARD IC BLOCK DIAGRAMS
(KV-20FS100/21FM100/21FS100 ONLY)
7
IN1a
1
-2dB
IN2a
2
IN3a INPUT
3
SELECTOR
IN4a
4
IN5a
5
IN6a
6
IN1b
40
IN2b
39
IN3b INPUT
38
SELECTOR
IN4b
37
IN5b
36
-2dB
IN6b
35
34
(KV-20FV300/21FV300/24FV300/25FV300 ONLY)
7
IN1a
1
-2dB
IN2a
2
IN3a INPUT
3
SELECTOR
IN4a
4
IN5a
5
IN6a
6
IN1b
40
IN2b
39
IN3b INPUT
38
SELECTOR
IN4b
37
IN5b
36
-2dB
IN6b
35
34
15 33
VOLUME 1
SURROUND
AGC
SRS
3D-Stereo
&
NJRC Original
Simulated Stereo
VOLUME 1
8
15 33
VOLUME 1
SURROUND
AGC
NJRC Original
3D Surround
&
NJRC Original
Simulated Stereo
VOLUME 1
8
11 12
9 10
BBE TONE VOLUME 2
BBE TONE VOLUME 2
32 31 30 29
9 10 11 12
BBE TONE VOLUME 2
BBE TONE VOLUME 2
32 31 30 29
— 35 —
KV-20FS100/20FV300/21FM100/21FS100/
21FV300/24FV300/25FV300
14
13
NJW 1135
CVA
+4.5dB
16
CVB
17
CTH
25
CTL
24
CSR
26
CONTROL
LOGIC CSB
23
SDA
18
SCL
19
GND
20
BIAS
VCC
21
+4.5dB
27 28 22
14 13
NJW 1134
CVA
+4.5dB
CVB
CTH
CTL
CSR
CONTROL
LOGIC CSB
SDA
SCL
GND
BIAS
VCC
+4.5dB
27 28
22
16
17
25
24
26
23
18
19
20
21