Only For Training And Service Purposes - LG GT500 Service Manual

4.12.2 Wi-Fi RF path
ANT780
DUMMY FEED
1p
C702
WIFI_RF_G
WIFI_RF_G
Check Power level
t Wi-Fi module Output (C717)
a
with
Spectrum Analyzer
Check Power level
t RF SW Output (C701)
a
with
Spectrum Analyzer
Copyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes

TP2
TP2
C701 100p
C700
0
C704
WIFI_RF_G
TP1: Range
13 ~ 17dBm
at 802.11b?
TP2: Range
13~17dBm
at 802.11b ?
Replace ANT780
TP1
C717 100p
WIFI_TXRX
WIFI_RF_G
TP1
VDDK_2V75
WIFI_TXRX
DNI BT_TXRX
R701 0
ANT_SEL_N
C707
1u
start
No
Replace Wi-Fi module (M710)
Yes
No
Replace RF Switch (FL700)
Yes
- 115 -
4. TROUBLE SHOOTING
TP713
C725
DNI
WIFI_RF_G
FL700
XM0830SK-TL1301TMP
5 3
ANT RFGND1
7
RFGND2
8 1
PORT1 GND1
2 4
PORT2 GND2 C705
6
GND3 4p
12 9
VCTL GND4
11
GND5
10 13
VDD PGND
WIFI_RF_G VSS_BT_RF
LGE Internal Use Only
1
GND1
2
ANT
3
GND2
4
ANT_SEL_P
5
SPI_SDO_S
6
SCLK
7
ESCN
8
GND3
C706
4p