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Only for training and service purposes
4. TROUBLE SHOOTING
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
XWZVXZZ
4. TROUBLE SHOOTING
4.17 FM Radio Trouble
TEST POINT
CIRCUIT
Figure 4.17
Q301
ANT301
L304_TP1
TP1
4.7nC119
B13
C14
E16
F16
C16
D16
A14
A15
R15
T15
M11
M10
N11
R11
T11
N12
41L
7R
7T
6
T
7P
1
DS_DDV
BF_1DS
1DS_SSV
WS
_
1DS
M0
M1
M2
VDD_FMR
FMRIN
FMRINX
CP1
CP2
TX1
FE2
RX12
RX12X
RX34
RX34X
VDET
C133 DNI
R111
0
BS2
FM_ANT
LCD_ID
BAT_TEMP
RX12
RX12X
RX34
RX34X
GSM_OUT
Q301
2
1
3
C310
1u
24K
R303
22n
L304
R304
270ohms
4.7K
R305
470n
C312
470n
C313
5.1ohms
R306
27p
C341
270n
L313
C394
27p
ANT301
2
1
L314
56n
FM_ANT
FM_LNA_EN
FM_ANT_1
FM_ANT_1
.
C244 47p
0
252R
2
4
2C
F
p
4
2
L202
0.1uH
L203
0.1uH
VA211
R251
0
J201
2
3
4
5
6
1
M5
M4
M3
M4F
M1
M6
FM_ANT
EAR_GND
TP1