LG L705ix, Service Manual

Page: 70 / 186

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4. TROUBLE SHOOTING
Measured value and spectrum of TP1
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Run a FTM program
set
R F m od e to
2100 se t uplink freq.
To 9750 C lick Tx On
And W CDM A set
P A
Range R0 an d R1 on
Set TX A CC to 330
Check a co upler
U 558 an d a
soldering of
C13 80 , C 1447
Che ck a
duplexer
FL35 and a
soldering of
R14 51 , C 1377
Check a FEM
FL34 and a
soldering of
C140 0
Check a P AM
Block U 578
Check a TX
SAW filt er FL24
and so ldering of
R134 3, L21
Run a FTM program
set
R F m od e to
2100 se t uplink freq.
To 9750 C lick Tx On
And W CDM A set
P A
Range R0 an d R1 on
Set TX A CC to 330
Run a FTM program
set
R F m od e to
800 set uplink freq .
To 83 7 Click Tx O n
And W CDM A set P A
Range R0 an d R1 on
Set TX A CC to 330
Check a co upler
U 557 an d a
soldering of
C20 05 , C 1646
Che ck a
duplexer
FL18 and a
soldering of
L15 , C14 19
Check a FEM
FL34 and a
soldering of
C140 0
Check a P AM
Block U 574
Check a TX
SA W filter FL31
and so ldering of
C1450 ,L61
Check the PAM
U105 and soldering
Of C159
Check the duplexer
FL106 and
solde ring of C 128
Check the Tx
SAW filter FL10 5
And so ldering of
C163
Check the SP DT
U109 and
Solde ring C10 3
Check the PAM
Block U 106
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