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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
To verify that the phone fulfils requirements on maximum output power.
Check 1
About 22~23dBm?
RF TX Level is OK
Check next stage
Check output power at
the SW101 with antenna
Cable.
No
Yes
Set the FDD Test of the Agillent 8960
Set the Maximum Power
Yes
The SW101 has any problem.
Change the SW101
Check 2
About 21~22dBm?
Check the power at
the C122 FEM Output
with probe.
No
Yes
The U102 has any problem.
Change the U102
Check 3
About 20dBm?
Check the power at
The R101(band2) or
C116(band5) Duplexer
Output with probe.
No
Yes
The FL101(band2) or
FL102(band5) has any problem.
Change the FL101 or FL102
Check 4
About 18dBm?
Check the power at
the IS101(band2) or
IS102(band5) Isolator
Output with probe.
No
Yes
The IS101(band2) or
IS102(band5) has any problem.
Change the IS101 or IS102
Check 5
About 16dBm?
Check the power at
the IS101(band2) or
IS102(band5) Isolator
Input with probe.
No
Yes
PAM block has any problem.
You have to check PAM block.
Check 6
About -6dBm?
Check the power at
the R150(band2) or
R147(band5) PAM Input
with probe.
The U110 will be not operated.
Change the board
No
TP Command
MODE=5
WTXC=9400, 1,890,903,542,557
SYCT=9400
TFTI=9400