LG GW520 - Page 107

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Only for training and service purposes
5. Trouble shooting
GW520 service manual
5.17.3. Checking GSM Rx part
Check TP1 ~ TP4
Signal exist?
Check Front-End Module &
Soldering of TPs
Rx Still has
problem?
GSM/DCS/PCS Rx is OK.
NO
NO
YES
YES
Checking Flow
START
Re-download & Calibration
Signal exist?
Check Front-End Module &
Soldering of TPs
Rx Still has
problem?
GSM/DCS/PCS Rx is OK.
NO
NO
YES
YES
Checking Flow
START
Re-download & Calibration
Check TP1 ~ TP4
Signal exist?
Check Front-End Module &
Soldering of TPs
Rx Still has
problem?
GSM/DCS/PCS Rx is OK.
NO
NO
YES
YES
Checking Flow
START
Re-download & Calibration
Signal exist?
Check Front-End Module &
Soldering of TPs
Rx Still has
problem?
GSM/DCS/PCS Rx is OK.
NO
NO
YES
YES
Checking Flow
START
Re-download & Calibration