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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
REV.F
1%
Audio Amp.
1%
R321
15
R322
15
FB303
C356
1u
C350
12p
C337
1u
FB302
1u
C342
C2
INB2
C1
OUT+
D5
OUT-
B5
PGND
C4
PVDD
C5
D4
RXIN+
RXIN-
B4
C3
SCL
B3
SDA
VDD
B1
VSS
A3
U302
MAX9877AEWP_TG45
BIAS
B2
A4
C1N
A5
C1P
GND
D3
A2
HPL
A1
HPR
D2
INA1
D1
INA2
INB1
1u
C333
VBAT
1u
C336
C345
1u
C351
0.015u
0.1u
C360
C348
0.015u
1u
C346
C349
12p
EAR_R
SPK_RCV-
AMP_I2C_SCL
AMP_i2C_SDA
SPKRP
SPKRN
BEARP
BEARN
EAR_L
HS_EAR_R
HS_EAR_L
BOM replace
6
CE
GND1
2
GND2
5
NC
4
1
VDD
VOUT
3
U603
R1114D261D-TR-F
C603
BLM15HD182SN1
FB601
0.1u
VBAT
VDDE_1V8
VDD_MIC_2V6
R636
3.9K
1u
C620
C621
1u
USW_ID
MIC2P
Rev.1.0
0
R626
USW_ID
USW_ID_ADC
REV.F
REV.F (Rev.1.1 update)
OVP Circuit
NUS3065MUTAG
U601
CNTRL
3
4
DRAIN
DRAIN_THERMAL
9
GATE
6
GND
2
IN
1
7
OUT
5
SRC
VCC
8
VBUS
INSTPAR
D601
PSD12-LF
NFM21PC105B1A3 FL601
3
G1
G2
4
IN
1
OUT
2
13
14
15
2
3
4
5
6
7
8
9
GU070-5P-SD-E1500
CN601
1
10
11
12
VA601
EVLC18S02003
C606
1u
USW_DP
USW_DM
USW_ID
C345, C346
FB302, FB303
R636
U603
CN601
1
3
1
1
4