Sony KLV-21SG2 Service Manual ▷ View online
KLV-21SG2 (AEP) 3-25
(3)
Schematic Diagram of H1 and H2 Boards
1
A
B
C
D
E
F
2
7
6
5
4
3
<COMPONENT SIDE>
<CONDUCTOR SIDE>
H1
[KEY]
— H1 BOARD —
1
A
B
C
D
E
F
2
7
6
5
4
3
<COMPONENT SIDE>
<CONDUCTOR SIDE>
H2
[HP JACK]
— H2 BOARD —
(KEY)
H1
CN1008
TO B(1/7)BOARD
B-SS12805<AEP>-H1.
CH-
VOL-
INPUT
VOL+
POWER
CH+
SIGN15
SIGN13
GND
POWER INT
KEY1
WHT
CN1501
3P
3
2
1
R1503
910
CHIP
1/10W
C1501
B
0.1
16V
16V
1608
S1502
R1504
2.7k
CHIP
1/10W
S1503
R1501
220
CHIP
1/10W
S1501
C1504
B
0.1
16V
16V
1608
S1508
S1504
S1505
R1502
470
CHIP
1/10W
AUDIO L
AUDIO R
(HP JACK)
H2
CN7001
TO A(2/5)BOARD
B-SS12805<AEP>-H2.
JL7603
R7604
0
CHIP
1/10W
R760210
CHIP
1/10W
R7601
10
CHIP
C7601
B
0.022
25V
1608
C7602
B
0.022
25V
1608
100p
C7603
CH
50V
1608
C7604
CH
100p
50V
1608
JL7607
JL7606
JL7605
JL7604
JL7602
JL7601
MA3200WA-TX
D7602
MA3200WA-TX
D7601
J7601
HP-GND
HP-L
HP-R
GND
CN7601
4P
4
3
2
1
4
R/D/D/D
L/G/S/I
4
4
S
AV4
TO A(5/5)BOARD
CN9403
CN9403
C
Y
R7731
100
CHIP
1/10W
R7730
100
CHIP
1/10W
J7701
V
R
L
2
1
4
3
D7702
UDZS-TE17-9.1B
D7703
UDZS-TE17-9.1B
D7701
UDZS-TE17-9.1B
R7708
220
CHIP
1/10W
1/10W
R7706
220
CHIP
R7704
220
CHIP
1/10W
C7701
CH
100p
50V
1608
C7702
CH
100p
50V
1608
C7703
CH
100p
50V
1608
C7704
CH
100p
50V
1608
1/10W
R7705
330
CHIP
1/10W
R7701
330
CHIP
1/10W
R7707
470k
CHIP
1/10W
R7710
470k
CHIP
R7711
220
CHIP
1/10W
R7713
220
CHIP
1/10W
R7714
220
CHIP
1/10W
C7707
F
1
10V
1608
C7706
F
1
10V
1608
C7705
CH
100p
50V
1608
JL7704
JL7703
JL7702
JL7701
JL7708
JL7707
JL7706
JL9005
A.GND
RV4
LV4
S4
GND
V4
GND
Y4
GND
C4
CN7701
10P
WHT
WHT
10
9
8
7
6
5
4
3
2
1
1/10W
R7709
75
CHIP
R7702
0
CHIP
R7703
0
CHIP
KLV-21SG2 (AEP) 3-26
(4)
Schematic Diagram of H3 and U1 Boards
1
A
B
C
D
E
F
2
7
6
5
4
3
<COMPONENT SIDE>
<CONDUCTOR SIDE>
H3
[LED, SIRCS]
— H3 BOARD —
1
A
B
C
D
E
F
2
7
6
5
4
3
<COMPONENT SIDE>
<CONDUCTOR SIDE>
U1
[INPUT TERMINAL]
— U1 BOARD —
STBY5V
0
5.0
0
4.9
4.9
5.0
0
5.0
3.2
5.0
M S
LED DRIVE
LED DRIVE
LED DRIVE
CN1004( 1 - 6 )
TO B(1/7)BOARD
LED SW
B-SS12805
<AEP>
-H3.
(LED, SIRCS)
H3
GND
STBY5V
STBY LED
POWER LED
P SAVE LED
MS BS2
1
2
3
4
5
6
JL1601
JL1602
JL1603
JL1604
JL1605
D1656
D1607
Q1601
Q1603
Q1607
Q1608
CN1601
SML-310MTT86
SMLU12D16W
DTC114EKA
DTA114EUAFT106
DTC114EUAFT106
6P
L2
L3
L2
GND
STBY5V
SIRCS
7
8
9
L3
STBY5V
SIRCS
C1653
F
22
10V
3216
C1652
F
22
10V
3216
JL1653
JL1652
IC1651
RS-50-T1
OUT
VCC
R1652
47
CHIP
1/10W
D1651
MM3Z5V6ST1
R1651
470
CHIP
1/10W
C1651
B
2200p
50V
1608
D1652
SML-310MTT86
S T B Y
P O W E R
JL1651
GND
DTC114EKA
R1603
1.8k
CHIP
1/10W
R1605
820
CHIP
1/10W
R1607
1.8k
CHIP
1/10W
R/D/D/D
L/G/S/I
(INPUT TERMINAL)
U1
B-SS12805<AEP>-U1.
MECHA GND
Y
CR
CB
R9004
330
CHIP
1/10W
4
3
2
1
J9002
R
L
R9006
470k
CHIP
1/10W
C9001
CH
47p
50V
50V
1608
C9002
CH
47p
50V
50V
1608
COMP R
AU GND
COMP L
GND
COMP CR
GND
COMP CB
GND
COMP Y
9
8
7
6
5
4
3
2
1
R9007
470k
CHIP
1/10W
C9003
CH
47p
50V
50V
1608
C9004
CH
47p
50V
50V
1608
R9001
0
CHIP
R9002
0
CHIP
R9003
0
CHIP
R9017
0
CHIP
1/10W
R9005
330
CHIP
1/10W
J9001
JL9001
JL9003
JL9004
JL9005
JL9006
JL9007
JL9002
VD9001
VD9002
VD9003
3
R/CR
B/CB
G/Y
CN9001
TO A(5/6)BOARD
CN9405
9P
KLV-21SG2 (AEP) 3-27
(5)
Schematic Diagram of U2 Board
1
A
B
C
D
E
F
2
7
6
5
4
3
<COMPONENT SIDE>
<CONDUCTOR SIDE>
U2
[AUDIO OUT]
— U2 BOARD —
(AUDIO OUT)
U2
B-SS12805<AEP>-U2.
R9301
330
CHIP
1/10W
4
3
2
1
J9301
R
L
R9303
47k
CHIP
1/10W
C9301
CHIP
47p
50V
50V
1608
C9303
CHIP
47p
50V
50V
1608
GND
F_RESET
REG9V
MUTE
A_OUT_R
A.GND
A_OUT_L
7
6
5
4
3
2
1
R9304
47k
CHIP
1/10W
C9302
CHIP
47p
50V
50V
1608
C9304
CHIP
47p
50V
50V
1608
R9302
330
CHIP
1/10W
C9305
CHIP
4.7
50V
50V
1608
C9001
CHIP
4.7
50V
50V
1608
R9312
0
CHIP
1/10W
R9313
0
CHIP
1/10W
R9314
0
CHIP
1/10W
R9311
470k
CHIP
1/10W
R9315
0
CHIP
1/10W
S9301
D9301
UDZS-TE17-9.1B
Q9302
DTC232TKT146
MUTE
D9302
UDZS-TE17-9.1B
Q9301
DTC232TKT146
MUTE
JL9301
JL9302
JL9303
JL9304
JL9305
JL9306
JL9307
CN9301
7P
TO A BOARD CN9404
R/D/D/D
L/G/S/I
KLV-21SG2 (AEP) 3-28
(6)
Schematic Diagram of D2 Board
1
A
B
C
D
E
F
G
H
I
K
J
2
12
13
11
10
9
8
7
6
5
4
3
14
15
+16.5V
+16.5V
8.1
1.6
8.1
5.2
0.4
1.2
-1.2
0.4
1.2
1.2
1.5
1.2
1.5
1.5
1.4
1.1
1.8
2.9
1.7
1.5
1.5
3.1
2.5
0
0
3.4
1.6
1.6
3.4
+16.5V
D5V
1.1
1.1
0
0
3.1
0
0
0
3.0
3.1
0
3.1
+16.5V
7.5
1.6
15.1
1.1
1.2
0.4
1.1
1.2
0.5
1.5
1.3
1.5
1.5
1.4
1.1
1.8
2.9
1.6
1.5
1.5
3.1
2.5
0
0
3.4
1.6
1.6
0
0
3.1
0
0
3.1
0
1.1
1.1
0
3.1
0
0
0
3.1
15.4
1.6
7.6
1.2
1.2
2.0
1.5
1.5
1.5
1.5
0
1.2
0.6
0.6
1.6
8.1
COMP2
COMP1
COMP3
COMP2
COMP1
COMP3
TO A(5/6)BOARD
CN8605
TO G2 BOARD
CN6004
CN8604
TO A(5/6)BOARD
R8266
CHIP
XX
RN-CP
CHIP
CHIP
RN-CP
CHIP
CHIP
R8274
VS2
IS2
FB2
VS1
IS1
FB1
GND
CT
SRT
RT
RDIS
BCT
BRT
DUTY
VCC
P1
N1
PGND
N2
P2
SCP2
SCP1
SS
REG
COMP2
COMP1
STB
FAIL
VS2
IS2
FB2
VS1
IS1
FB1
GND
CT
SRT
RT
RDIS
BCT
BRT
DUTY
VCC
P1
N1
PGND
N2
P2
SCP2
SCP1
SS
REG
COMP2
COMP1
STB
FAIL
(INVERTER)
D2
B-SS12805<AEP>-D2.
TO LCD UNIT
TO LCD UNIT
TO LCD UNIT
TO LCD UNIT
SW
SW
INVERTER CONTROL
SW
SW
SW
SW
INVERTER CONTROL
SW
SW
TO LCD UNIT
TO LCD UNIT
TO LCD UNIT
TO LCD UNIT
GND
GND
16.5V
16.5V
DIMMER
GND
D5V
GND
GND
16.5V
16.5V
16.5V
GND
BACK LIGHT
PANEL DET
T8212
7
5
6
4
1
8
2
3
T8210
7
5
6
4
1
8
2
3
T8211
7
5
6
4
1
8
2
3
R8254
XX
1/10W
R8255
XX
1/10W
R8257
120k
RN-CP
1/10W
R8256
120k
RN-CP
1/10W
R8220
24k
RN-CP
1/10W
R8217
24k
RN-CP
1/10W
T8208
7
5
6
4
1
8
2
3
T8209
7
5
6
4
1
8
2
3
T8207
7
5
6
4
1
8
2
3
T8206
7
5
6
4
1
8
2
3
T8205
7
5
6
4
1
8
2
3
T8204
7
5
6
4
1
8
2
3
T8202
7
5
6
4
1
8
2
3
T8203
7
5
6
4
1
8
2
3
T8201
7
5
6
4
1
8
2
3
C8261
B
0.47
16V
2012
2012
B
16V
0.47
C8251
2012
B
16V
0.47
C8250
2012
B
16V
0.47
C8246
2012
B
16V
0.47
C8247
PS8204
3.15A
PS8203
3.15A
PS8201
3.15A
PS8202
3.15A
5720
CH
4kV
22p
C8274
5720
CH
4kV
22p
C8272
5720
CH
4kV
22p
C8270
5720
CH
4kV
22p
C8268
5720
CH
4kV
22p
C8266
5720
CH
4kV
22p
C8264
5720
CH
4kV
22p
C8213
5720
CH
4kV
22p
C8211
5720
CH
4kV
22p
C8209
5720
CH
4kV
22p
C8207
5720
CH
4kV
22p
C8205
5720
CH
4kV
22p
C8203
C8284
B
0.1
16V
16V
1608
D8230
1SS355
R8268
470
CHIP
1/10W
R8243
470
CHIP
1/10W
R8216
10k
CHIP
1/10W
D8222
1SS355
XX
CHIP
R8270
0
CHIP
R8269
0
CHIP
R8271
XX
C8277
B
0.1
16V
16V
1608
R8272
XX
C8283
B
0.1
16V
16V
1608
D8229
1SS355
R8267
470
CHIP
1/10W
R8273
XX
Q8218
UMW1NTR
4
5
6
1
2
3
Q8217
UMH2NL02TN
4
5
6
1
2
3
Q8216
UMH2NL02TN
C8202
B
0.1
16V
16V
1608
R8215
10k
CHIP
1/10W
R8206
470
CHIP
1/10W
D8204
1SS355
R8265
XX
R8262
0
CHIP
R8261
0
CHIP
R8211
10k
CHIP
1/10W
R8213
10k
CHIP
1/10W
R8264
CHIP
C8282
B
0.1
16V
16V
1608
D8228
1SS355
R8260
470
CHIP
1/10W
C8276
B
0.1
16V
16V
1608
R8242
470
CHIP
1/10W
XX
CHIP
D8221
1SS355
5
4
3
2
1
Q8215
UMW1NTR
4
5
6
1
2
3
Q8214
UMH2NL02TN
C8281
B
0.1
16V
16V
1608
D8227
1SS355
R8259
470
CHIP
1/10W
4
5
6
1
2
3
Q8213
UMH2NL02TN
R8263
XX
C8201
B
0.1
16V
16V
1608
R8205
470
CHIP
1/10W
D8203
1SS355
HOT-12
HOT-11
HOT-10
3P
CN8205
3
2
1
HOT-9
HOT-8
HOT-7
3P
CN8204
3
2
1
HOT-6
HOT-5
HOT-4
3P
CN8203
3
2
1
HOT-3
HOT-2
HOT-1
3P
CN8202
3
2
1
BD9766FV
IC8202
12345678
910
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
BD9766FV
IC8201
12345678
910
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
RN-CP
1/10W
110k
R8224
R8221
82k
RN-CP
1/10W
R8222
82k
RN-CP
1/10W
C8226
B
0.1
16V
16V
1608
R8249
24k
RN-CP
1/10W
R8252
1k
RN-CP
1/10W
R8253
1k
RN-CP
1/10W
C8279
CH
220p
50V
1608
C8280
CH
220p
50V
1608
C8259
B
10
25V
3225
COOL-12
COOL-11
COOL-10
CN8209
3P
3
2
1
COOL-9
COOL-8
COOL-7
CN8208
3P
3
2
1
COOL-6
COOL-5
COOL-4
CN8207
3P
3
2
1
COOL-3
COOL-2
COOL-1
CN8206
3P
3
2
1
2SK3018-T106
Q8212
S
R8258
27k
RN-CP
1/10W
D8226
1SS355
D8225
1SS355
D8214
UDZS-TE17-5.1B
GP
SP
GN
SN
UPA1716G-E2
Q8204
D4
D3
D2
D1
G
S3
S2
S1
1234
5
6
7
8
UPA1716G-E2
Q8203
D4
D3
D2
D1
G
S3
S2
S1
1234
5
6
7
8
UPA1716G-E2
Q8202
D4
D3
D2
D1
G
S3
S2
S1
1234
5
6
7
8
UPA1716G-E2
Q8201
D4
D3
D2
D1
G
S3
S2
S1
1234
5
6
7
8
Q8211
FDS6690A
D4
D3
D2
D1
G
S3
S2
S1
1234
5
6
7
8
Q8210
FDS6690A
D4
D3
D2
D1
G
S3
S2
S1
1234
5
6
7
8
Q8209
FDS6690A
D4
D3
D2
D1
G
S3
S2
S1
1234
5
6
7
8
Q8208
FDS6690A
D4
D3
D2
D1
G
S3
S2
S1
1234
5
6
7
8
R8227
0
CHIP
CN8210
4P
4
3
2
1
WHT
CN8201
11P
11
10
9
8
7
6
5
4
3
2
1
R8236
330k
RN-CP
1/10W
R8251
1k
RN-CP
1/10W
R8248
56k
RN-CP
1/10W
R8250
13k
RN-CP
1/10W
C8278
CH
330p
50V
1608
RN-CP
1/10W
82k
R8240
RN-CP
1/10W
82k
R8238
RN-CP
1/10W
82k
R8209
RN-CP
1/10W
82k
R8207
R8246
430
RN-CP
1/10W
R8244
430
RN-CP
1/10W
R8203
430
RN-CP
1/10W
R8201
430
RN-CP
1/10W
R8231
4.3k
RN-CP
1/10W
R8230
3.9k
RN-CP
1/10W
R8247
20
RN-CP
1/10W
R8245
20
RN-CP
1/10W
RN-CP
1/10W
20
R8204
RN-CP
1/10W
20
R8202
C8275
B
0.033
16V
1608
C8273
B
0.033
16V
1608
C8271
B
0.033
16V
1608
C8269
B
0.033
16V
1608
C8267
B
0.033
16V
1608
C8265
B
0.033
16V
1608
C8214
B
0.033
16V
1608
C8212
B
0.033
16V
1608
C8210
B
0.033
16V
1608
C8208
B
0.033
16V
1608
C8206
B
0.033
16V
1608
C8204
B
0.033
16V
1608
-
+
+
-
BA10358FV-E2
IC8203
1234
5
6
7
8
2SK3018-T106
Q8207
S
R8237
15k
RN-CP
1/10W
C8260
B
0.01
25V
1608
1608
R8229
12k
RN-CP
1/10W
C8229
B
4700p
50V
1608
C8231
B
4700p
50V
1608
C8239
B
0.01
25V
1608
C8232
B
0.1
16V
16V
1608
R8214
100k
RN-CP
1/10W
C8222
B
10
25V
3225
D8216
1SS302-TE85L
C8216
B
4.7
25V
25V
3225
1608
B
50V
4700p
C8237
D8220
1SS302-TE85L
R8219
10k
CHIP
1/10W
C8263
B
4.7
25V
25V
3225
C8224
B
10
25V
3225
D8202
1SS302-TE85L
D8206
1SS302-TE85L
C8236
B
0.047
16V
1608
D8218
1SS302-TE85L
D8210
1SS302-TE85L
R8235
100k
RN-CP
1/10W
C8227
B
4700p
50V
1608
R8226
68k
RN-CP
1/10W
D8224
1SS302-TE85L
D8212
UDZS-TE17-5.1B
C8255
B
10
25V
3225
1608
B
50V
4700p
C8233
1608
B
16V
0.047
C8242
RN-CP
1/10W
330k
R8241
C8220
B
10
25V
3225
RN-CP
1/10W
330k
R8210
1608
B
16V
0.047
C8243
C8257
B
10
25V
3225
D8209
1SS302-TE85L
C8253
B
0.1
16V
16V
1608
C8245
B
10 10V
3216
C8252
B
0.22
16V
1608
R8233
10k
CHIP
1/10W
D8207
1SS302-TE85L
D8213
UDZS-TE17-5.1B
D8223
1SS302-TE85L
D8217
1SS302-TE85L
D8201
1SS302-TE85L
R8225
68k
RN-CP
1/10W
R8228
100k
CHIP
1/10W
R8232
10k
CHIP
1/10W
C8256
B
10
25V
3225
C8228
B
0.1
16V
16V
1608
C8249
B
0.1
16V
16V
1608
1608
B
50V
4700p
C8238
C8223
B
10
25V
3225
RN-CP
1/10W
330k
R8208
C8215
B
4.7
25V
25V
3225
1608
B
16V
0.047
C8241
D8215
1SS302-TE85L
D8208
1SS302-TE85L
C8262
B
4.7
25V
25V
3225
1608
B
50V
4700p
C8234
C8244
B
10
10V
3216
D8205
1SS302-TE85L
D8219
1SS302-TE85L
C8254
B
10
25V
3225
R8223
22k
CHIP
1/10W
1608
B
16V
0.047
C8240
R8234
100k
RN-CP
1/10W
D8211
UDZS-TE17-5.1B
R8212
100k
RN-CP
1/10W
C8235
B
0.047
16V
1608
C8230
B
0.01 25V
1608
R8218
10k
CHIP
1/10W
RN-CP
1/10W
330k
R8239
C8221
B
10
25V
3225
C8225
B
4700p
50V
1608
C8248
B
0.22
16V
1608
C8258
B
10
25V
3225
C8219
B
10
25V
3225
Click on the first or last page to see other KLV-21SG2 service manuals if exist.