B
E
3906
*
上
电静
噪部分
*
C
SE\BTL(14PIN)--->L:BTL H:SE
S_DOWN(10PIN)--->L:STBY H:POWER ON
chang 060802
VOL(13PIN)--->L:-85db H:+14db
SCHEMATIC DIAGRAM
MODEL NO.: SX-3083TVD AUDIO SCH
NOTE: subject to change without notice for improvement!
SPR2
SPR1
SPL1
SPL2
VOL
SPR1
SPL2
SPL1
SPR2
SD
SD
BTL
DVD_VIDEO
SPL2
BTL
SPR2
A_MUTE
VER
USB+5V
AMP_R
A_VCC
A_MUTE
A_MUTE
TFT_SWITCH
AOUT_FL
AOUT_FR
MR_OUT
ML_OUT
VER
AMP_R
AOUT_FL
AOUT_FR
A_VCC
AMP_L
AMP_L
A_MUTE
DVD_MUTE
MCU_MUTE
VOL_PWM
CD_CTR
4
DVD/TV_SEL
[2]
TFT_SWITCH
TV_AUDIO
[2]
STANDBY
R/V_O/SC
7
G/Y_O/SY
7
COAX
4
CVB1
5
AOUT_FR
4
AOUT_FL
4
GND
9V_ON
AUDIO_VCC
AUDIO_VCC
AUDIO_VCC
USB+5V
USB+5V
AUDIO_VCC
GND
CB2
0.1uF
Q18
NC
Q26
2N3904
2
1
3
C31
100pf
+
C40
47U/6.3V
R154 10K
Q23
3904
1
3
2
IC2
SM7512
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ROUTN
RPVDD
R_IN
VDD
L_IN
LPVDD
LOUTN
LPGND
LOUTP
S_DOWN
BYPASS
GND
VOLUME
SEBTLB
ROUTP
RPGND
CB3
0.1uF
C32
4U7
C41
0.1UF
R115 4K7
C35
1uF
C54
100p
R127
4K7
Q20
S8050
+
C37
47U/6.3V
R141
2K2
R123 100R
R131 3K9
L15
FB
L21
FB
R112
100K
R136
100
J3
EAR_PHONE
1
4
2
3
5
13
12
11
16
17
18
Q29
S8050
C33
4U7
R130
33K
Q21
S8050
L18
FB
C39
4U7
+
C49
47UF/10V
+
-
U12B
NJM4558
5
6
7
8
4
C38
4U7
R150
10K
C58
100p
C57
100p
C34
100pf
R138 4K7
R144
10K
R140
10K
R149
10K
+
C44 4U7
R121
2K4
L17
1uH
R117 10K
R145
1K
+
CE1
4U7
R111
100
R113
4K7
+
C50
47UF/10V
+
C47
47U/6.3V
R116
10K
R129
6K8
R148
100R
R96
4K7
C56
10p
R133
10K
R137 4K7
R135
10k
C43
100pf
C52
100p
R146
22K
+
CE2
4U7
Q25
2N3906
1
3
2
R106
33K
R109
NC
C48
10p
Q22
2N3904
2
1
3
R143
2K2
C51
100p
R132
NC
R147
100R
R128
1K
R114
6K8
C55
100p
R134
2K4
J4
VIDEO_OUT
1
2
3
+
CE4
4U7
L16
FB
Q17
3904
1
3
2
D10
1N4148
1
2
D8
1N4148
1
2
R152 10K
R119
NC
C45
100pf
L19
1uH
R107 3K9
J5
S_VIDEO_OUT
1
2
3
R126
10K
C42
1uF
C36
0.1uF
R110
10k
CE3
100uf
CB1
0.1uF
R120
12K
R122
1K
JP3
CN4-1.5
1
2
3
4
+
-
U12A
NJM4558
3
2
1
8
4
Q19
2N3904
2
1
3
C53
10p
R142
10K
CD3053
U13
1
2
3
4
5
6
7
9
10
8
11
12
13
14
15
16
Y1
Y0
Z1
Z
Z0
INH
VEE
C
B
VSS
A
X0
X1
X
Y
VDD
R124
1K
R125
1K
C46
0.1UF
J6
COAX
1
2
3
Q27
3904
D9
1N4148
1
2
R108
100K
J2
AUDIO_OUT
1
2
3
L20
1uH
