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Audio & Video Circuit Diagram
R103
33
3
AOUT0
ABCLK
3
ABCLK
R105
NC
3
AOUT3
ALRCLK
3
ALRCLK
A5V
R8
10R
A5V-1
3
A5V
FB6
A-LMAIN
A-RMAIN
C116
+
C120
470uF/16V
0.1uF
R42
R47
3,7
FS1
7
CVBS_G_Y/OUT
7
Y_R_V/OUT
7
C_B_U/OUT
C131 11pF
L5
1.1uH
3
C_B_U
C_B_U/OUT 7
C133
C134
R136
150pF
160pF
75R 1%
C135 11pF
L6
1.1uH
3
CVBS_G_Y
CVBS_G_Y/OUT 7
C136
C137
R140
150pF
160pF
75R 1%
3
C143 11pF
L8
1.1uH
3
Y_R_V
Y_R_V/OUT 7
C148
C149
R145
150pF
160pF
75R 1%
A+12V
R100
0
7
PA+12V
C108
+
47uF/25V
A-12V
R109
0
7
PA-12V
C114
47uF/25V
A5V
R150
R151
2K
2K
U9
1
16
BCK
SCK
AMCLK
3
2
15
DIN
ML
ML
3
3
14
LRCK
MC
I2CCLK
3,6
4
13
DGND
MD
I2CDAT
3,6
5
12
NC-1753
ZeroL/NA
6
11
R557
0R
R111
VCC
ZeroR/ZeroA
7
10
VoutL
Vcom
8
9
VoutR
AGND
+
C115
PCM1753
47uF/16V
7
D+5V
D+5V
C121
C122
NC
NC
C123
NC
0R/NC
115mW
U10
C124
C126
NC
NC
NC
1
16
MUTE
VCC
2
15
INA
OUTA1
3
14
GND
OUTA2
4
13
INB
OUTB1
C128
5
12
GND
OUTB2
NC
C127
6
11
N.C.
N.C.
7
10
NC
INC
OUTC1
8
9
GND
OUTC2
NC
C130
NC
R126
0R
R127
0R
R128
0R
WHEN NO BUFFER
WHEN NO BUFFER, ALL THESE
R131
R132
R133
COMPONENTS SHOULD BE OR.
NC
NC
NC
Only for Alco DECAL
C140 11pF
L7
1.1uH
CVBS_C_1
CVBS_C
C144
C145
R143
150pF
160pF
82R 1%
R144
75R
Only for Alco DECAL
J12
PA+12V
7
5PIN
5
PA+12V
4
3
MIC-R
2
1
MIC-L
DSPVCC33
DSPVCC337
WHEN ON KARAOKE,THIS
FB5
COMPONENTS DO NOT
INSTALL.
R556
C118
+
C117
10K
0.1uF
47uF/16V
2
Q24
1
3
2N3906
2K
MUTE
TP62
R116
NC
R119
0R
TP63
R230
0R
R121
0R
TP64
R123
NC
R124
0R
R125
NC
R231
0R
C138 100uF/16V
This buffer can only drive two
loads at the same time.
So, the output forms can be
Components & D_terminal ;
Components & S-VIDEO; or
D-terminal & S-VIDEO.
DV+5V FROM P5V
D+5V
7
D+5V
R175 0R
R172
NC
C204
NC
Q18
2
3
1
NC
R172,R300 SHOULD BE USED
AS 1206 DECAL.
D+5V
R301 NC
R300
75R
C205
220uF/16V
Q32
2
3
8550
1
C141
R139
MIC-L
NC/6.8K
R93
20K
NC/2.2uF/50V
C103
120pF
R243
R96
C105
R97
A-LMAIN
0R/2K/1%
13K/11K1%
3.9K
100uF/16V
C107
1.2nf
3
R7
MUTE
Q20
1
NC/2N3904
2
NC/2K
KAROKA: INSTALL
NO KARAOKE:R243 ,R244=0R,R96,R107=13K;
KARAOKE:R243,R244= 2K/1%,R96,R107=11K/1%
C142
R141
MIC-R
R101
20K
NC/6.8K
C110
NC/2.2uF/50V
120pF
5
C112
R108
A-RMAIN
R244
R107
6
0R/2K1%
13K/11K1%
3.9K
100uF/16V
C113
1.2nf
3
R240
MUTE
1
Q21
NC/2K
NC/2N3904
2
C119
0.1uF
For D-terminal
Y_D
7
PA+12V
Y_RCA
7
For component Y
R113
0R
Y_SVIDEO 7
For SVIDEO-Y
Cr_RCA
7
For Component-V
PA+12V
Cr_D
7
For D-terminal
R118
Cb_RCA
7
For Component-U
0R
Cb_D
7
For D-terminal
C_SVIDEO 7
For SVIDEO-C
R120
91K
MUTEM: Low mute On.----Standby model.
Hign mute Off.-----Play mode.
3
AMUTE
Amute: Low Mute ON.----Standby/pause/stop.
Hign Mute Off.---Play.
CVBS_SCART 7
CVBS_C/OUT 7
SCART-L
7
A+12V
C102
0.1uF
R94
100R/NC
U8A
C104
D4558
47uF/25vV
3
+
R95
1
LMAIN-OUT
LMAIN-OUT 7
330
2
-
R98
C106
1nF
22K
R99
3
A-12V
MUTE
2K/NC
1
Q10
2
MUTE-OP
2N3904
R129
2K/NC
NO KARAOKE:R99 /R110=2K,R129/R117=NC;
KARAOKE: R99/R110=NC,R129/R117=2K
C109 47uF/25V
A+12V
R102
RMAIN-OUT
RMAIN-OUT 7
330
U8B
R104
D4558
R106
+
22K
100R/NC
7
-
SCART-R 7
R110
3
MUTE
2K/NC
Q11
1
A-12V
2
2N3904
MUTE-OP
R117
2K/NC
GND
AGND
GND
Q12
R114
2N3906
100K
2
3
R115
15K
MUTE-OP
D5
D29
MUTE
2
3
C125
Q13
1N4148
+
2N3906
1N4148
220uF/25V
R122
D6
470R
1N4148
+
C129
47uF/25V
A33V
A-12V
R130
1.3K
2
R134
4.7K
1
Q14
R135
100K
3
2N3906
MUTE
R137
100K
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