Read Sony KLV-21SG2 Service Manual online
KLV-21SG2 (AEP) 3-1
3-1. BLOCK DIAGRAMS
SECTION 3
DIAGRAMS
5
4
3
2
CN6402
CN6401
5V
FM/AM
QSS
VIDEO
2
3
4
5
AGC
SCL-P2
SDA-P2
32V
Q6402
BUFFER
BUFFER
Q6401
32V
5V
TU6401
TUNER
VIDEO
FM/AM
QSS
AGC
SCL
SDA
VIDEO
AUDIO
CN7701
1
3
5
7
8
9
Y4
S4
V4
LV4
RV4
1
2
3
4
V
L
R
J7701
H2(2/2)
(INPUT TERMINAL)
CN9403
CN9702
CN9701
AV SW1
IC2501
S2-3
S-3
20
21
RV3
18
Y3
V3
15
19
16
C3
LV3
32V
SCL_P2
SDA_P2
9
7
5
3
1
CN9405
C4
COMP R
COMP L
COMP CR
COMP CB
COMP Y
9
7
5
3
1
CN9001
(TUNER)
TU
A-1
U1
(INPUT TERMINAL)
R/D/D/D
L/G/S/I
Y
CR
CB
4
3
2
1
J9002
R
L
J9001
3
R/CR
B/CB
G/Y
COMP R
COMP L
COMP CR
COMP CB
COMP Y
4
R/D/D/D
L/G/S/I
4
4
S
AV4
Y4
S4
V4
LV4
RV4
C4
1
3
5
7
8
9
5V
FM/AM
QSS
VIDEO
2
3
4
5
AGC
SCL-P2
SDA-P2
32V
5
4
3
2
IN4-1
IN4-2
17
RV2
LV2
1
Q9701,9702
Q9703,9704
Q2509
TXT-MIX
IC2201
CROUT
CBOUT
HS
VS
C1
YOUT
CVBS/Y2
CVBS/Y1
5V
SYNC SEP.
BUFFER
CN9703
2
4
6
8
10
12
CB
CVBS-MON
Y
R-MS
L-MS
CR
17
18
24
25
CSW-M
SP-MUTE
CSW-V
HP-MUTE
IC2206
Q2210
VOUT1
YOUT1
COUT1
58
56
53
COMPONENT-I/F
IC8400
Q2601,2605
IN4-3
33
34
35
23
22
21
43
44
1
CN9401
1
2
3
6
7
8
R-IN
L-IN
L-OUT
BLUE
MODE
R-OUT
11
15
16
19
20
GREEN
BLK
RED
VIDEO-OUT
VIDEO-IN
1
2
3
4
13
14
19
20
22
23
25
SCL-B
POWER1
SDA-B
POWER2
POWER4
CN9704
INT
CN9402
1
2
3
6
8
10
15
19
20
R-IN
L-IN
L-OUT
SMART-LINK
MODE
R-OUT
C-IN
VIDEO-OUT
V-IN/Y-IN
1
4
SCL-P2
SDA-P2
7
8
9
IN2-2
IN2-3
IN3-3
42
43
3
V
Y
C
Y1
CB1
CR1
SELYOUT
SELCBOUT
SELCROUT
IN1-1
IN1-2
IN1-3
25
26
27
Q2602,2606
Q2603,2607
22
7
6
5
1
3
2
IC2606
23
SELVOUT
SELHOUT
EXTCLK
X2602
4MHz
20
31
30
SCL
SDA
SCL_B
SDA_B
2
9
4
Q2217
X2202
16.2MHz
38
Xtal
C2
48
Q2504
Q2505,2213
Q2506,2201
Q2203
IC2202
SW
4
14
15
13
12
1
2
3
5
Q2204
Q2205
Q2206
R
G
B
9
11
10
B1
G1
R1
25
7
26
RTV
LTV
64
62
TV
63
S2-4
V4
RV4
LV4
25
23
27
22
ROUY2
LOUT2
V/YOUT2
43
44
45
Q2504
V1
CIN1
L1
1
51
3
S2-1
C1
Y1
6
5
2
R1
4
AGC-DEFEAT
AGC-MONITOR
SYSTEM IC
IC2003
COINICIDENCE
22
6
59
VSYNC
HSYNC
VDS
52
53
55
32
94
TXT-VIDEO
Q2601
IC2205
MULTIPLETER
7
6
3
1
5
IO1
IO2
YS3
15
14
13
SCL
SDA
SCL_B
SDA_B
CTL-RGB1
95
2
CTL2
Q2216
FSW-AUTO
96
OI2
OI1
CTL1
CTL-RGB0
R-TXT
G-TXT
47
48
46
B-TXT
IC2004
79
AVL-IN
-
3
2
1
+
ROUT1
LOUT1
54
52
2
7
4
6
9
8
BUSY
RESET
F-RESET
SDA-D
SCL-D
SCL-B
SDA-B
SDA-D
SCL-D
Q2601,2605
IC2005
RESET
VCC
OUT
73
INT
97
BUSY
29
RESET
EXTALIN
X2001
12MHz
70
IC2004(2/2)
-
5
6
7
+
AVL OUT
78
IC2002
EEPROM
7
IC2208
SDRAM
85-92
5
8,15,23,26
27,31,33,
36-40,49-51
64-67
27,31,33,
36-40,49-51
64-67
18
A0-A17
1-4,7
9-20
9-20
8
21-23
25-29
25-29
32
10
9
WR
RD
WR
D0-D7
RE
A0-A17
IC2010
OPT ROM
3
24
19
30
12-4,30
23,25-29
23,25-29
13-15,
17-21
17-21
IC2009
-
9
10
+
-
13
12
+
11
1
2
4
IC2006
IC2007
8
2
4
57
58
ROMBK.2
ROMBK.1
ROMBK.1
INVN-WP
A17
2
3
PSEN
A17-LN
ABK16
ABK15
A0-A14
A15
D0-D7
D0-D7
Q2002,2003
RESET
RESET
5
6
84
98
83
SCL1
SDA1
SCL-D
SDA-D
82
81
SCL0
SDA0
OSCGND
69
XTALOUT
71
STBY3.3V
CR1
CB1
Y1
11
9
AV4-V-IN
AV4-Y-IN
AV4-C-IN
AV4-R-IN
AV4-L-IN
S4
SDET
AV4-V-IN
AV4-Y-IN
AV4-C-IN
AV4-R-IN
AV4-L-IN
S4
SDET
FM/AM
QSS
R-TVAU
L-TVAU
AV1-V-OUT
AV1-R-OUT
AV1-L-OUT
10
Q2509
LINE MUTE
18
Q9401
SW
D9414
D8413
Q9405
Q9409
Q9409
MUTE
Q9404
Q9408
Q9408
MUTE
Q9403
Q9407
Q9407
MUTE
Q9402
Q9406
Q9406
MUTE
5
D7011
SP-MUTE
HP-MUTE
R-MS
L-MS
RESET_AUDIO
52
3
VIDEO
Y
R-Y
B-Y
R-Y
R-Y
R-Y
Y
VIDEO
B-Y
R-Y
(AV SW,SYSTEM IC,COMPONENT I/F)
TO B-1 BOARD
CN1007
B
TO B-1 BOARD
CN1005
A
S
2
2/
1/
AV1
AV2
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