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4.9 Speaker Trouble
TEST POINT
TP1_VA200
TP2_VA201
CIRCUIT
TP
C210
DNI
C2
EAR_SPK_N
IN1-
C1
C213
DNI
EAR_SPK_P
IN1+
TP4
C219
1u
D2
TP3
IN2-
1u
C220
D1
IN2+
D3
TP200
IN3-
C3
TP201
IN3+
TP4
I2C_SCL
I2C_SDA
R220
HS_GND
Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Figure 4.9
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
1V8_VDD
R210
1800
C230
2.2u
C232
C233
2.2u
0.1u
0
2. TROUBLE SHOOTING
SPK_P
SPK_N
SPK_P
SPK_N
HP_LOUT
HP_ROUT
C221
C222
0.1u
0.1u
C223
C224
R207
47p
47p
20
- 87 -
4. TROUBLE SHOOTING
TP3_C219
TP4_C220
U200
TP1
TP2
VA200
VA201
C206
C207
47pF
47pF
TP1
TP2
LGE Internal Use Only
CN200
1
2
SUSY0024805
16-8T-07PP
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