AOC LM923, Service Manual

Page: 24 / 55

AOC LM923
Page 24 of 55
6.2 AUDIO BOARD
715L1279-A
C150
NC/470P
GND
L103
600 OHM
LOUT+
DGND
CN103A
WAFER 4P2.0 R/A
1
2
3
4
R130
4.7K
+
C124
10uF
+
C129
470uF/16V
LIN-
C117,118,125,126 パ 0.001UF э 0.1UF FOR EMI 0905
R110
1K
+
C133
220uF/16V
+12V
CN104
CONN
1
2
3
4
5
6
7
GND
GND
R127
NC/4.7K
C148
NC/470P
C125
1000P/1nf
C128
0.1uF
R106
0K
U101
TPA3002D2PHPR
1
2
3
4
5
13 14 15 16 17 18 19 20 21 22 23 24
25
26
27
28
29
30
31
32
33
34
35
36
37 38 39 40 41 42 43 44 45 46 47 48
6
7
8
9
10
11
12
/SD
RINN
RINP
V2P5
LINP
BSL
N
PVCCL PVCCL LO
U
T
N
LO
U
T
N
PG
NG
L
PG
NG
L
LO
U
T
P
LO
U
T
P
PVCCL PVCCL BSL
P
VCLAMPL
AGND
ROSC
COSC
AVdd
AGND
VAROUTL/NC
VAROUTR/NC
AVcc
MUTE
MODE_OUT/NC
VCLAMPR
BSRP
PVCCR PVCCR ROUT
P
ROUT
P
PG
NG
R
PG
NG
R
ROUT
N
ROUT
N
PVCCR PVCCR
BSRN
LINN
AVddREF
VREF
VARDIFF/AGND
VARMAX/AGND
VOLUME
REFGND
ROUT+
ROUT-
LIN-
2003/07/18 э
L102
600 OHM
2003.09.18 EMI ADD SOLUTION FOR L110 L111 CANCEL L101-104
C141
0.1uF
R116
10K
PHONE_RIGHT
2003/07/18 э CN104 パ 3 PIN 倒 7 PIN
AVDD
U203
TPA6110A2DGNR
1
2
3
4 5
6
7
8
BYP
GND
SD
IN2 VO2
VDD
VO1
IN1
RIN-
LOUT+
GND
C140
0.1uF
C114
0.1uF/100nf
C145
0.1uF
RIN+
WHEN PIN10 5V
VCC
R107 120K
R120
10K
R113
6.8K /NC
GND
C137-C138 100P FOR EMI 1104
R119
10K
MUTE
C146 0.1uF
DELETE
C123
0.01uF/10nf
/SHUTDOWN
PHONE_LEFT
AGND
2003.09.18 EMI ADD SOLUTION FOR L110 L111 CANCEL L101-104
GND
C115
0.01uF/10nf
R112
0K
R129
10K/4.7K
+
C132 1.0uF
C120
0.01uF/10nf
LOUT-
WHEN SELECT TDA6110A2, PLEASE CONNECT VR101,VR102,VR103,R125,R126, PIN8,9,10,11 FOR
TDA3002D2,
AOC 19"LCD MONITOR FOR NMV A
TI_TDA3003D2/TDA3002D2 3W/9W AUDIO
C
1 1 Thursday, December 04, 2003
Title
Size Document Number Rev
Date: Sheet of
GND
+ C136
1.0uF
71L59B121
R125 0K
R101
NC/0K
715L1279-A
CIRCUIT
2003/12/03
AVDD
C121
0.1uF/100nf
C152
0.1uF
L108
600 OHM
R123
NC/0K
GND
GND
L101
600 OHM
C118
1000P/1nf
+
C134
220uF/16V
+
C107 1.0uF
+
C116
10uF
LIN+
+12V
GND
PHONE_LEFT
+
C105
1.0uF
L1/L118
L
1 2
3 4
R122
120K
WHEN SELECT TDA3003D2, PLEASE CONNECT R110,R111,R112,R113, PIN8,9,10,11 FOR
TDA3003D2,3W
R102
NC/0K
L114
120 OHM
L109
600 OHM
C112
0.01uF/10nf
GND
CN101
WAFER 2*7P 2.54mm
2
4
6
8
10
12
14
1
3
5
7
9
11
13
ROUT+
MUTE
RIN-
GND
CN102
WAFER 4P2.0 R/A
1
2
3
4
LOUT-
71L59B121
C144
0.1uF
VOLUME
C127
1000P
PHONE_RIGHT
LOUT-
C117,118,125,126,127,142 1000PF FOR EMI 0905
C102 0.1uF/100nf
CGND GND
C122
0.1uF/100nf
GND
R108
NC
MODE
GND
R109
NC
WHEN PIN9 SELECT GND, VOLUME =VARMAX-VARDIFF =16DB
L104
600 OHM
C143
0.1uF
R114
10K
GND
GND
C142
1000P
C113
0.1uF/100nf
C126
1000P/1nf
L2/L116
L
1 2
3 4
R118
10K
DGND
+12V
2003/10/31 ADD NEW EMI SOULATION C127,C142
+
C110 1.0uF
DGND
L105
600 OHM
C147
NC/470P
R117 10K
VOLUME
GND
WHEN SELECT TDA6110A2, PLEASE CONNECT R123, PIN31,32,35, DELETE R101, FOR
TDA3002D2,9W
PHONE_RIGHT
CGND
ROUT-
C139
0.1uF
+12V
+12V
C149
NC/470P
CN101 PIN 5 GND, PIN6
/SHUTDOWN,PIN7
VOLUME,PIN8 MUTE
AVDD
+
C135
0.47uF
C101 220 pF
C103
0.1uF/100nf
C117
1000P/1nf
+12V
R121
10K
+
C109 1.0uF
+ C104
10uF
J101
NC
3
4
2
1
R115
10K
R103
120K
2003/10/31 ADD NEW EMI SOULATION L113 L114
ROUT-
C151
0.1uF
MODE
PHONE_LEFT
C137
100P
C138
100P
L113
120 OHM
+
C130
470uF/16V
+
C131 1.0uF
MODE
+
C111 1.0uF
LOUT+
GND
GND
GND
/SHUTDOWN
ROUT+
GND
+
C108 1.0uF
+ C106
1.0uF
L107
600 OHM
GND
R126 0K
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