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4. TROUBLE SHOOTING
4.11 Receiver Trouble
TEST POINT
U200
TP2_L205
TP1_L204
CIRCUIT
C2
C210
DNI
EAR_SPK_N
IN1-
C1
C213
DNI
EAR_SPK_P
IN1+
TP
C219
1u
D2
IN2-
1u
C220
D1
TP4
IN2+
D3
TP200
IN3-
C3
TP201
IN3+
TP3
TP4
I2C_SCL
I2C_SDA
R220
HS_GND
LGE Internal Use Only
VA206
VA207
VBAT
C202
C203
4.7u
0.1u
(1608)
C5
OUT+
D5
OUT-
A2
FB202
1800
HPL
U200
A1
FB203
1800
HPR
WM9093ECS-R
EUSY0403901
B5
CPVDD
C225
2.2u
A3
R206
CPVSS
C226
2.2u
A4
CP
20
A5
CN
C228
2.2u
U200
1V8_VDD
R210
1800
C230
2.2u
C232
C233
2.2u
0.1u
0
4. TROUBLE SHOOTING
Figure 4.11
RCV_P
RCV_N
SPK_P
SPK_N
HP_LOUT
HP_ROUT
C221
C222
0.1u
0.1u
C223
C224
R207
47p
47p
20
- 92 -
Copyright © 2011 LG Electronics. Inc. All right reserved.
TP3_C219
TP4_C220
TP1
CN201
L204
0.1uH
1
2
L205
0.1uH
TP2
SURY0010114
TP1
C234
C235
VA206
VA207
BWBR1207L-04B-P
47pF
47pF
TP2
Only for training and service purposes
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