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LGE Internal Use Only
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
39pF
C505
C506
39pF
1800
FB504
100n
L503
L502
100n
1M
R501
10
FB507
VA501
R522
DNI
L501
100n
1800
FB503
C536
1n
C501
27p
1800
FB502
1800
FB501
ZD503
Q501
2
3
1
G
D
S
ZD504
ZD506
J501
6
1
4
4D
5
M5-MIC
M4-DETECT
M4-L
M1-R
M6-GND
R502
100K
R503
10
VDD_IO_1V8
ZD505
FM_ANT
HS_JACK_DET
HS_MIC
HS_GND
HS_GND
HS_OUT_L
HS_OUT_R
MTK, INFINEON must be connected
CIRCUIT
VDD_IO_1V8
C515
2.2u
VBAT
0
R504
2.2u
C504
C502
10u
C516
2.2u
0.1u
C503
R510
0
C514
2.2u
600
FB506
600
FB505
C511
39p
39p
C510
M501
3
D
1
C
2
E
2
A
C2
B2
B4
A4
B3
E1
A3
D1
A1
C3
B1
E4
E3
C4
4
D
2
D
D
D
V
P
H
D
D
V
P
S
IN3-
OUT+
OUT-
HPL
IN3+
HPR
CP
IN1+
CN
IN1-
IN2+
IN2-
SDA
SCL
S
AI
B
D
D
V
P
C
S
S
V
P
C
D
N
G
39p
C509
C512
39p
C513
2.2u
C507
47n
C508
47n
C539
47n
47n
C540
I2C_SDA
I2C_SCL
SPK_L
SPK_R
SPK_N
SPK_P
HS_GND
HS_OUT_L
HS_OUT_R
AMP_HS_N
AMP_HS_P
C235
47p
47p
C234
C233
DNI
C232
DNI
VMIC_BIAS_P
VAUD_HS_BIAS
N17
N18
T16
R16
M18
M17
K17
P11
P4
J4
T2
J5
G1
BC3_n
SDCLKO
BFCLKO_0
BFCLKO_1
CKE
ANAMON
FSYS_EN
EPN
EPP
HSL
HSR
LSN
LSP
DDR_CKE
DDR_CLK_P
DDR_DQS[1]
DDR_CLK_N
BT_CLK_REQ
SPK_L
SPK_R
RCV_HS_N
RCV_HS_P
BB Chip
U501
2
3
1
4
5
VCC
VIN-
OUT
VIN+
GND
1M
R511
R514
220K
C522
39pF
R509
2.2K
39pF
C521
C519
22n
R508
1.5K
C523
120p
R513
47
10u
C520
C518
39pF
1K
R512
R521
100K
C517
22n
VDD_IO_1V8
VAUD_HS_BIAS
HS_MIC_N
HS_MIC_P
HS_HOOK_DET
HS_MIC
HS_GND
In case of absence of HOOK must be removed
TP01
TP0
TP04
TP03
Headset MIC
Resoldering points
TP05
TP06