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4.17 FM Radio Trouble
TEST POINT
TP1
TP2
CIRCUIT
TP1
CN202
6
8
10
12
14
1
2
3
4
5
7
9
11
C223
13
1u
15
D210
DNI
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Figure 4.17.1
TP1
C312
3.3p
FM_ANT
L201
C241
10p
TP2
270n
TP2
4. TROUBLE SHOOTING
TP6
TP3
TP5
TP5
1
NC1
C304
1n
2
FMI
3
R305
RFGND
4
LPI
5
0
RST_
C322
3.3p
VIO
R306
10K
FM_RST
C314
R304
100n
100K
100/140
- 9 -
4. TROUBLE SHOOTING
TP5
TP4
VIO
R307
TP4
TP4
100K
U301
SI4704-D50-GMR
VBAT
15
DOUT
C305
1u
14
LOUT
C306
1u
13
ROUT
12
GND
11
VA
C313
TP3
1u
TP
R308
FM_32K
0
LGE Internal Use Only
FM_AUDIO_L
FM_AUDIO_R
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