Only For Training And Service Purposes - LG GT500 Service Manual

4.11.3 Bluetooth RF path
ANT780
DUMMY FEED
1p
C702
WIFI_RF_G
WIFI_RF_G
Check Power level
t BT IC Output (C732)
a
with
Spectrum Analyzer
Check Power level
t RF SW Output (C701)
a
with
Spectrum Analyzer
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Only for training and service purposes

TP1
TP2
TP2
C700 C701 100p
0
DNI
C704
WIFI_RF_G
TP1: Range
0 ~ 4dBm ?
TP2: Range
0~4dBm ?
Replace ANT780
FL730 DEA212450BT-7043C1
5 1
BP1 U_BP
4 2
BP2 BP_DC
VSS_BT_RF
VDDK_2V75
WIFI_TXRX
BT_TXRX
R701 0
12
ANT_SEL_N
10
C707
1u
start
No
Yes
No
Yes
- 113 -
4. TROUBLE SHOOTING
TP1
C732 100p
FL700
XM0830SK-TL1301TMP
5 3
ANT RFGND1
7
RFGND2
8 1
PORT1 GND1
2 4
PORT2 GND2 C705
6
4p
GND3
9
VCTL GND4
11
GND5
13
VDD PGND
WIFI_RF_G VSS_BT_RF
Replace BT Chip (U731)
Replace RF Switch (FL700)
LGE Internal Use Only
BT_TXRX
C706
4p