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4. TROUBLE SHOOTING
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Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Set the phone Tx is On and PDM is 90
Check TP3
Over 21 dBm?
RF Tx Level is OK
Yes
No
Change the board
Check TP2
PA _R1
≤
2.6V
Check MDM9615M
Yes
No
Check TP1
Over -3 dBm?
Check WTR1605L
Yes
No
DNI
L11044
C11057
33p
33p
C11056
U11004
Part Name=ACPM-5702-TR1
Vendor=AVAGO
6
7
4
8
3
5
9
2
10
1
11
PGND
VCC1
VCC2
RFIN
RFOUT
VEN
NC
ISO
VMODE
GND
CPL
C11059
DNI
100p
C1106
3
C1106
4
100p
C1106
5
100p
330p
C11046
330p
C11044
4.7u
C11047
Part Name=SAFEA1G88KB7F00
FL11006
4
OUT
C11045
4.7u
L11039
100p
C11058
3.9n
+VPWR
PA0_R1
PA0_R0
PA_ON4_U1900
PA_DET_MMMB
+VSMPS
PA_DET_1
UMTS_L2 TX
TP2
VEN
TP1
TP3