Bluetooth Trouble - LG -A290 Service Manual

4.18 Bluetooth Trouble

BT Ant.
TP400
C428 100p
C431
C432 C430
DNI DNI
1.5p
LGE Internal Use Only
Figure 4.15.1
CON ANT FEED
SFCY0000901
GND2 GND1
C436
OUT IN
FL402
18p
C437
C438
DNI
DNI
FM_AUDIO_R
FM_AUDIO_L
BT_HOST_WAKEUP
BT_CLK_REQUEST
BT_32K
BT_UART_RX
TP1
TP4
U401
TP2
TP3
C6
AVDD28_FM
C426 1u
B7
AUROUT
C7
C425 1u
AULOUT
B5
AVSS28_FM2
U401
F2
VDD28
TP401
D7
GPIO0
TP402 E7
SRCLKENA
D4
TESTMODE
E5
TP403
EXT32K
F7
UTXD1
TP404
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4. TROUBLE SHOOTING
U401
VBAT
R410
R415
47
TP1
C433
1u
R413 100K
E1
VBAT
E2
LDO28EN
D1 C434 1n
OSC_IN
C1
AVDD28_SX
B2
AVSS28_RF1
D2
C435 1u
VCC28OUT_FM
C3
T1P
B3
AVSS28_RF3
C2
AVSS28_RF2
B1
REXT
R412
15K
C427 C429
1u 1u
TP3
Only for training and service purposes
TP2
BT_POWER_EN
BT_CLK_26M
TP4