LG GS290 Service Manual

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LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
GS290 Operational Description Revision B
LG Electronics 73/136 LGE Property
4.6 Receiver & Speaker trouble
Check Points
-Speaker contact
-Audio amp soldering
TP1
TP2
1uC350
1uC351
C320
2.2u
0
R348
0.1u
C311
VIO_2V62
2.2u
C362
0.1u
C361
220n
C347
220n
C321
VBAT
27p
C342
27p
C343
LM49151TLX
U304
4E 4D
3
D
4C
2A
E2B3
B2
A1
C3
E3
C2
D2C1
A3D1
A4E1
4B 1B
DDV
DDVSL
INM+ LSOUT+
INM- LSOUT-
INL SET
INR
HPL
BYPASS
I2CVDD
SDA
SCL HPR
D
NG
SSVPC
N1C
P1C
D
N
GPC
220nC364
0.1u
C363
220nC365
2.2u
C319
100K
R330
4.7u
C313
BB_SND_R
BB_SND_L
EAR_P
EAR_N
I2C_SDA
I2C_SCL
SPK_RCV_P
FM_AUDIO_L
FM_AUDIO_R
HSO_R
HSO_L
EAR_GND
SPK_RCV_N
AUDIO AMP SUB SYSTEM & SIGNAL DISTRIBUTOR
TP1 TP2
FSA2268UMXU306
94
63
52
71
810
1B0 1A
1B1 S1
2B0 2A
2B1 S2
GND VCC
VBAT
68n
L315
68n
L316
2.2u
C381
BLM15BD182SN1D
FB308
1800
BLM15BD182SN1D
FB309
1800
39p
C338
C333
22p 22p
C341
VA305
EVLC5S0250 EVLC5S0250
VA303
BRS-181213SL08-P
CN301
2
1
K
0
0
1
5
4
3R
SPK_RCV_P
SPK_RCV_N
FM_SPK_OUTP
FM_SPK_OUTN RCV_FM_SEL
Receiver & Speaker

LG GS290 Specifications

General

Brand	LG
Model	GS290
Category	Cell Phone
Language	English