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4. AUDIO I/F CIRCUIT DIAGRAM
R90
180/F/0402
AOUT_FL
C104
220P/50V/0402
R219
1K/J/0402
SYS_MUTE
L:MUTE
H:ACTIVE
R89
180/F/0402
AOUT_FR
C103
220P/50V/0402
GNDA
LGE Internal Use Only
R103
27K/F/0402
C122
120P/50V/0402
V-
R92
C108
R102
7.5K/J/0402
4.7K/F/0402
2
OPREF
3
10U/10V/0805
C111
1200P/50V/0402
R220
NC
2
1
C292
R217
NC
0/J/0402
+3.3V_SYS
GNDA
R218
4.7K/J/0402
Q25
B
PMBS3906
R100
27K/F/0402
C121
120P/50V/0402
R91
C107
R101
7.5K/J/0402
4.7K/F/0402
6
OPREF
5
10U/10V/0805
C110
1200P/50V/0402
3-27
OP_OUT_L
0/J/0603
OPVCC-
C291
0.1U/25V/0402
C295
10U/10V/0805
C124
GNDA
1
2
U13A
R117
10U/10V/0805
APC558KC
100K/F/0402
1
V+
OPVCC+
+5V_SYS_A
C296
0.1U/25V/0402
C299
10U/10V/0805
OP_OUT_R
OPVCC-
C123
7
U13B
1
10U/10V/0805
APC558KC
R118
100K/F/0402
2
OPVCC+
3-28
L83
-5V_SYS
R122
R115
0/J/0402
1K/F/0402
2
R232
2
1K/F/0402
Q29
C129
2
1
B
PMBS3904
1N/50V/0402
1
H:MUTE
L:ACTIVE
R119
R114
0/J/0402
1K/F/0402
1
R233
2
1K/F/0402
Q30
C128
1
2
B
PMBS3904
1N/50V/0402
1
H:MUTE
L:ACTIVE
GNDA
Copyright © 2009 LG Electronics. Inc. All right reserved.
1
AVOUT_L
2
AVOUT_R
Only for training and service purposes
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