Sony KLV-21SG2 Service Manual page 14

A-2
(AV SW,AUDIO AMP,POWER)
IC7001
AUDIO CONTROL
AUDIO L/R
FM/AM 60
MONO_IN
1
QSS 67
IF_IN1
Q7006
QSS AMP
L_MS 53
SC2_L_IN
7
R_MS
54
SC2_R_IN
L_AVSW
56
SC1_L_IN
2
R_AVSW 57
SC1_R_IN
3 21
POWER_ON_RESET
2
SCL_P2 SCL
3
SDA_P2
SDA
CN8401
UNREG16.5V 1 AU16.5V
UNREG16.5V 2
GND 3
GND 4
UNREG6V 5
UNREG6V 6
UNREG6V 7
TO G BOARD
CN6351 GND 8
GND 9
GND 10
UNREG33V 11 33V
GND 12
REG16.5V 13
GND 14
CN8402
STBY5V 1
GND 2
D
POWER-ON 3
TO G BOARD GND 4
CN6302
CN8405
REG16.5V 1
TO D2 BOARD REG16.5V 2
CN8201
GND 3
GND 4
POWER1
8 POWER4
POWER2
IC7010
HP AMP
37 L_TVAU
6
SC1_OUT_L
7
VAR_L
10
36 R_TVAU 5
SC1_OUT_R
2
1
VAR_R
3
IC7004
HP AMP
5
25
HP_OUT_L 7
HP_L
6
24 3
HP_OUT_R 1
HP_R
2
OUT1
Q7009 Q7008
MUTE
MUTE
IC7011
OUT2
AP
13
28 3
SP_OUT_L IN1 OUT1
AUDIO L AUDIO L
27 14
5
SP_OUT_R
IN2 OUT2
AUDIO R
AUDIO R
11
SCL_B SCL
10
SDA_B SDA
2
1
3
IC7004
FILTER W
6
7
5
2
1
3
IC7005
FILTER W
6
7
5
Q7007
ACTIVE FILTER
9V
REG16.5V
IC8401
CONVERTER
PS8401
24
VCC
27
OUT1_D
1
2
21
REG5V_IN
30
LIM
28
LL1
29
OUT1_u
16
LH2
19
OUT2_D
18
LL2
17
OUT2_U
9
STBY1
10
STBY2
15
INV2
14
FB2
12
POWER_GOOD
D7009
9
D9406
4
Q7006
HP MUTE
HP_MUTE
D7007
IC7009
MIX
IC7007
AUDIO AMP
5
5
7 L IN
8
6 L OUT
1
3 10
1 R IN R OUT
2
3
MUTE
SP MUTE
Q7014
Q7015,7005
MUTE
MUTE
6
Q7013
AU16.5V
MUTE SW
Q7017 Q7016
MUTE
MUTE
5
IC8403
5V REG
VCC OUT
Q8402
SW
L8601
4 5
G D1
D3.3V
1 6
S1 D2
2 7
S2 D3
3 8
S3 D4
Q8401
SW
4 5
G D1
1 6
S1 D2
2 7
S2 D3
3 8
S3 D4
Q8403 IC8402
SW 9V REG
D9414
L8402
4 5 +9V
G D1 VCC OUT
1 6
S1 D2
2 7
S2 D3
D8413
Q8405
3 8 1 5 +12V
S3 D4 G D1
SW
2 6
D2
3 7
Q8406
D3
4 S1 8
D4
S2
S3
U2
(AUDIO OUT)
J9301
CN9404 CN9301
VAR_L L
1 A_OUT_L 1
L/G/S/I
VAR_R
3 A_OUT_R 2
4 MUTE 3
R
6 F_RESET 4 R/D/D/D
S9301
Q9302 Q9301
MUTE MUTE
CN7001 CN7501 J7601
1 NC 1
AUDIO R
2 HP-R 2
AUDIO L
3 HP-L 3
4 HP-GND 4
H2(1/2)
(HEADPHONE)
SPEAKER
CN7002
AUDIO R
1 SP R+
L
2 SP R-
AUDIO L
3 SP L+
R
4 SP L-
CN8403
1 D3.3V
2 D3.3V
3 D3.3V
4 D3.3V
5 GND
6 GND
7 GND
8 DSY
9 9V
10 GND
11 PANEL12V
12 PANEL12V
C
13 GND
14 GND
TO B-1 BOARD
15 STBY5V
CN1003
16 STBY5V
17 GND
18 GND
19 3.3V_ALERT
20 5V_ALERT
21 DCIN_ALERT
22 GND
23 DIMMER
24 BACKLIGHT
25 PANEL_DET
CN8404
5 DIMMER
4 BACKLIGHT
3 PANEL_DET H
2 GND
TO D2 BOARD
1 D5V
CN8201
Q8404
16.5V
HEADPHONE
KLV-21SG2 (AEP) 3-2