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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
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Fig. 4.8.1.3 Check Flow of the GSM TX Block
Check T P1
If G850&G900 ov er 31dBm?
If DCS/PCS over 28dBm ?
G850/900/DCS/PCS Tx is OK.
Check the other part
Check T P2, TP3
If G850&G900 ov er 29dBm?
If DCS/PCS over 25dBm ?
G850/900/DCS/PCS Tx is OK.
Check P AM Block OK?
Refer to Chapt er 3.8.
2
YES
YES
NO
NO
NO
NO
NO
START
Check Soldering of PAM Block
If Problems still exit,
replace the PAM
Change the Board
Check the ANT SW
Module
YES
Check the RTR6275
YES
Problems resolved?
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