Read Sony KLV-21SR2 (serv.man2) Service Manual online
KLV-21SR2 (UC) 3-1
3-1. BLOCK DIAGRMS
3. DIAGRAMS
10
9
8
7
6
5
4
3
2
1
CN6403
CN6401
DETOUT2
DETOUT
STLED
BILED
MODE
FMONO
MUTE
ROUT
LOUT
GND
1
2
3
4
5
6
7
8
9
10
GND
9V
30V
5V
SCL T
SDA T
GND
RF AGC
AFT
GND
Q6402
BUFFER
BUFFER
Q6403
Q641,6404,6406
BUFFER
9V
30V
5V
TU6400
TUNER
DET OUT2
L OUT
R OUT
MUTE
FMONO
MODE
BIL IND
ST IND
DET OUT
AFT OUT
RFAGC
SCL
SDA
VIDEO
AUDIO L/R
CN9202
1
2
3
4
5
6
7
8
9
10
C2
G
Y2
G
V2
G
S-2
LV2
RV2
G
AUDIO
R
L
VIDEO
S VIDEO
1
2
3
4
V
L
R
J9202
VIDEO 2
INPUT
U1
(INPUT TERMINAL)
6
5
4
3
2
1
CN9004
9
10
11
12
GND
L
R
MUTE
FMONO
MODE
BIL
STL
DETOUT
OUT2
1
2
3
4
5
6
7
8
9
10
GND
AFT
RF AGC
AGC DET(NC)
SDA
SCL
5V
30V
9V
GND
10
9
8
7
6
5
4
3
2
1
CN6450
CN6451
TV
LV2
C2
45
AV SW
COUT1
YOUT1
47
9
12
43
8
V2
Y2
10
IC2803
LV3 16
RV3 18
48 RTV
11 RV2
14 S2
S1
S2-1
7
6
RV1
4
3
Y
1
V1
1
5
2
C1
LV1
LTV
46
AUDIO L
AUDIO R
VIDEO
SDA 27
SCL 26
ROUT1 41
LOUT1 39
VOUT2 33
15
V3
Y
C
9V
30V
5V
SCL_T
SDA_T
CR
16
14 C
CB
11
Y
8
IC2511
Y/V
9
6
Y/V OUT
CR OUT
SEL
3
CB/C OUT
5
Y
B-Y
AUDIO L/R
VIDEO
AUDIO R
AUDIO L
8
7
NC
C2
GND
Y2
GND
V2
GND
S-2
LV2
RV2
GND
NC
10
9
8
7
6
5
4
3
2
1
GND
RV1
LY1
S-1
GND
V1
GND
Y1
GND
C1
CN9007
S2-1
NC
NC
12
11
INPUT
VIDEO 1
J9201
R
L
V
4
3
2
1
S VIDEO
VIDEO
L
R
AUDIO
G
RV1
LV1
S-1
G
V1
G
Y1
G
C1
10
9
8
7
6
5
4
3
2
1
CN9201
(TUNER)
TU
20
19
17
16
14
13
11
10
8
6
5
4
3
2
1
CN2801
SCL_T
SDA_T
SCL B 5V
SDA B 5V
Q6450
Q6451
Q6452,Q6453
SYNC SEP
Q6454
BUFFER
Q2535
BUFFER
BUFFER
Q2533
Q2537
BUFFER
BUFFER
Q2538
Q2540-2542
BUFFER
Q2556,2557,2560
BUFFER
Q6456,Q6458
Q6459
BUFFER
1
VID
MUTE
MODE
F_MONO1
F_MONO2
BIL
ST
AFT
AGC
SYNDET
SDA T
SCL T
LINE_MUTE
DVI_RST
SCL B SW
SDA B SW
TO B BOARD
CN1007
2
7
12
CONT
Q2539
BUFFER
R-Y
CCP SW
SDA_B_5V
SCL_B_5V
A-1
TO A-2
Q6405
INV.
Y/CB/CR OUT
D-Y
D-PB
D-PR
R
L
L/R
LV3
RV3
V3
V3/LV3/\RV3
LINE_MUTE
DVI_RST
VGA
DVI_MUTE
10
9
8
CN9003
DVI_RST
VGA
DVI_MUTE
DVI_RST
LINE_MUTE
LINE_MUTE
LINE_MUTE
TO UD BOARD
CN3802
A
B
TO A-3
TO A-3
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