LG A395 - Page 107

4. TROUBLE SHOOTING
- 107 -
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Only for training and service purposes
LGE Internal Use Only
TP4
TP3
U100
U100
FB101
600
C105 2.2u
C106 2.2u
C170
1u
T15 R19 R18 R17 R16 R15 V23 AA15 AC15 W22 W17 Y17 AA17 AB17 AA12 AC14 W12 V12 AC12 AA14 Y14 W13 V13 T14 U13 AA11 AA10 W11 K21 K22 M20 R21 P18 B14 G11
VDD28_FSRC
XOSC32_ENB
AVSS28_ABB
AVDD28_ABB
AVDD18_AUD
AVSS12N_AUD
AVSS18_AUD
AVDD28_FM
AVSS28_FM_1 AVSS28_FM_2
GND_BT_1 GND_BT_2
GND_BT_3 GND_BT_4
GND_BT_5 GND_BT_6
AVDD33_PA_BT
AVDD33_DC2DC_IN_BT
AVDD13_OUT_BT
AVDD13_SXAFE_BT
AVDD13_TRX_BT
TEST4
TEST3 TEST2 TEST1
AVDD28_HF
AVDD28_LF
DVDD28_IO
GND_RF_24
GND_RF_1 GND_RF_2 GND_RF_3 GND_RF_4 GND_RF_5
0.1uC101 10pC102
C103 0.1u
0.1uC111
VIO_2V8
AVDD_2V8
1nC110
VIO_1V8
VBT_3V1 VBT_3V1
1uC104
VFM_2V8
VRF_2V8
VTCXO_2V8
C112 0.1u
VIO_2V8
C114
1u
GND
changed (12/3) Close to IC
(Priority 2)
Close to IC
(Priority 2)
Close to IC
(Priority 1)
Close to IC
(6/26)
GND_BT should connect together and then connect to main GND
Close to IC
W12,AC14,AA12: Star Connection
(X5R) (X5R)
V23: need through hole to main GND
Close to IC
(X5R)
(X5R)
(X5R)
Internal 32k : B14 -> VRTC
External 32k : B14 -> GND
(B14)
(X5R) (X5R)
TP4
TP3