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4. TROUBLE SHOOTING
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
_^VXZZ
4.9 Speaker Trouble
2. TROUBLE SHOOTING
TEST POINT
CIRCUIT
Figure 4.11.1
U202
C210_TP2 C209_TP1
L211_TP4
L210_TP3
C255
C256
TP1TP2
TP3
TP4
R263
DNI
0.1u
C203
WM9093ECS-R
U202
EUSY0403901
3B
A4
C3
C2
2B
D1
D3
4D
C1
A1D2
1B
D5
A2
A5
A3
B5
4B
C5
4C
D
NG
OUT+
DDVPH
CPVDD
CPVSS
CN
HPL
OUT-
SAIB
IN2- HPR
IN1+
DDVS
IN3-
IN2+
ADS
IN1-
IN3+
CP
LCS
10u
C202
C204
0.1u
C205
2.2u
C206
2.2u
1u
C256
C209
47p
C210
47p
C211
0.1u
C212
0.1u
C213 2.2u
C214 2.2u
R201
20
20
R208
C218 2.2u
0
R212
1V8_VDD
VBAT
1u
C255
1800R238
DNI
FB207
1V8_HPVDD
R250
DNI
I2C_SCL
I2C_SDA
EAR_SPK_N
EAR_SPK_P
HP_LOUT
HP_ROUT
EAR_GND
EAR_GND
EAR_GND
SPK_
N
SPK_P
AUDIO AMP SUB SYSTEM & SIGNAL DISTRIBUTOR
TP2
C201
100pF
SUSY0024805
CN202
2
1
L210
0
C216
47pF
C217
47pF
VA201 VA202
L211
0
SPK_N
SPK_P
SPK
TP3
TP1
TP4