LG -600 Series Repair Manual page 75

Appendix.
Tx Flow Chart & Solution
10-A) Check Placement of U102, 104
GSM TX BAND
DCS TX BAND
10-B) Check U102 Pin 3, Using Spectrum Analyzer
10-B) Check U104 Pin 3, Using Spectrum Analyzer
Yes No C107 Valid? C123 Valid? No Yes
RF Output ~ 20dbm? RF Output ~ 18dbm?
(Short & Open) (Short & Open)
No Yes Yes No
10-B) Test!!
Replace U102, 104
10-B) Test!!
Goto Block 11!
GSM Handsets Lab.
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