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Only for training and service purposes
4. TROUBLE SHOOTING
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
_`VXZZ
4.10 Earphone Trouble
2. TROUBLE SHOOTING
TEST POINT
Figure 4.11.1
CIRCUIT
U202
C210
FB206_TP4
FB205_TP3
C209
C255_TP1
C256_TP2
TP3
TP4
TP1TP2
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
_`VXZZ
4.10 Earphone Trouble
2. TROUBLE SHOOTING
TEST POINT
Figure 4.11.1
CIRCUIT
U202
C210
FB206_TP4
FB205_TP3
C209
C255_TP1
C256_TP2
TP3
TP4
TP1TP2
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
762R
0
IND
8
6
2R
C244 47p
0
252R
VAUX
R265
DNI
R264
DNI
270pF
C240
IN
D
522R
0081
402BF
2
4
2C
F
p
4
2
L202
0.1uH
FB205
1800
VA205
L203
0.1uH
1V8_VDD
VA211
VA206
0.1uH
L204
DNI
R239
1800
FB206
270pF
C252
VA209
L207
0.1uH
VA210
DNI
R230
R266
DNI
C262
DNI
C261
DNI
R251
0
J201
2
3
4
5
6
1
M5
M4
M3
M4F
M1
M6
Q201
S
G
D
062R
01
1V8_VDD
R262
1M
R261
100K
008
1
802BF
FM_ANT
HP_LOUT
HP_ROUT
JACK_DETECT
EAR_GND
EAR_GND
TP2
TP1
TP4
TP3