LG D690 - Page 55

3. TROUBLE SHOOTING
- 55 -
Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LGE Internal Use Only
3.6.4 Checking RF Rx Block
kupjXXXX jXXW] kup
YsXXWZ
jXXXW YY
YYjXXWW
sXXX] YUY
sXXXY Z`
sXXW^ XU\
kupsXXWY
jXXZX WU\
sXXX^ XY
XYsXXXX
kupsXXXZ
_YsXXW`
sXXW_ kup
XryXXW[
yXXW\ Xr
Y[r
yXXW]
GND2
GND5
GND11
TRX1
ANT
TRX2
GND10
TRX3
VRAMP
PGND3
PGND2
PGND1
TRX4
TRX5 TRX6
PGND6
PGND5
PGND4
PGND7 PGND8
PGND9
PGND10
PGND11
PGND12
PGND13
PGND14
PGND15
PGND16
GND1
GND12
GND3
GND4
GND6
GND7
GND8
TX_HB_IN
TXEN
TX_LB_IN
BS2
BS1 VBATT
VCC
GND9
MODE
43
42
41
40
39
38
37 36 35
32
33
34
24 23
22
29
30
31
18
21
25
20
26
19
27
5
2
|XXWW
zr^^\_`
16
15
14 13 12 11 10
17
9
8
7
6
4
3
28
1
44
GSM850/900_Bal2
9
GSM850/900_Bal1
8
GSM1800/1900_Bal2
7
GSM1800/1900_Bal1
6
GND4
10
GND3
5
GSM850/900_UnB
1
GND1
2
GND2
3
GSM1800/1900_UnB
4
msXXWW
YY
jXXX] jXXX\
YY
yXXWZ XWr
sXXWX \U]
jXXX^
YYW
sXXWW XU\
sXXW[ XUY
GSM_PA_RAMP
nztwhlu
hu{Wz~zlsY
{tvk|sl{yZ
{tvk|sl{y[
{tvk|sl{yY
{tvk|sl{yX
Ynyoiu
Ynysiw
Ynyoiw
Ynysiu
GOGkntzGnGP
h}kkY_khjwGdGXU]}
GY}
yGXUW
TP1
TP2
TP3
TP4
TP5