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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
\U{Gz
OymP
Check TP3
Over 21 dBm ?
No
Check TP2
W_PA_R0 ? 2.6 V
N
o
Check TP1
Over 8 dBm?
N
o
Set the phone Tx is ON and
PDM is 210
Yes
RF Tx Level is OK
Yes
Check MSM7227
Yes
Check RTR6285
Change the board
C1022
0.5p
C1057 100p
DNI
C1003
C1014
1n
12n
L1021
C1021
1n
0.75p
C1009
U1002
51
8
7
9
6
10
5
11
4
12
3
13
2
14
1
RFIN_LOW
RFOUT_LOW
VMODE
GND3
VBP
VCC2
VCC1
GND2
VEN_LOW
RFOUT_HI
VEN_HI
GND1
RFIN_HI
CPL
D
N
G
P
4.7n
L1024
C1056
68p
C1035
22p
L1022
12n
01
01
R
91
C1046
100p
C1039
4.7p
100p
C1066
61
01
R
91
2.7n
L1023
FL1005
1950MHz
5
3
2
4
1
IN
OUT
G1
G2
G3
52
01
L
1.2n
82
R1020
+VPWR
FL1006
897.5MHz
5
3
2
4
1
IN
OUT
G1
G2
G3
68p
C1028
C1101
4.7u
22p
C1112
GND
W_PA_R0
W_2100_PA_ON
W_PA_R1
W_900_PA_ON
WCDMA_900_TX_OUT
PDET_IN
WCDMA_2100_TX_OUT
SFSY0035101
BAND5 : B9425 ( SFSY0036501)
BAND 5/8
BAND2 : B9640 (SFSY0036601)
SFSY0036501
BAND8 : B9442 (SFSY0037601)
BAND1 : B9414 (SFSY0035101)
TP
TP2
TP1
Содержание GD88O
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