LG CU920 Manual page 95

Run a FTM pro gram.
Set RF mode to WCDMA_1900B o r
WCDMA_800.
Set Upli nk C han to 9400 or 4182
Cli ck Tx ON and WCDMA.
Set PA range R1 On.
Set TX AGC to 400
NO
Check Tx SAW
Filter
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Only for training and service purposes
Check a
YES
Current over
500mA?
NO
Check T P6 or TP7
Over -5 dBm?
YES
Check P AM bl ock
Fig. 4.7.1.3 Check Flow of the WCDMA TX Block
- 97 -
4. TROUBLE SHOOTING
NO
Check TP1
over 25dBm?
YES
NO
Check T P2 or TP3
Over 23dBm?
YES
NO
Check T P4 or TP5
Over 22dBm?
YES
Tx is OK
Check other
parts
Check c oupler
U102 or U104
Check D uplexer
U103 or FL102
Check F EM FL100
LGE Internal Use Only