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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting and Circuit Diagrams
3-26
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3-2-2. EGSM Transmitter
YES
NO
Check the U802
THE END
NO
YES
VCO600 Resolder or
change
NO
YES
NO
Tx ON
(Level : 5)
battery voltage : 3.8V
U802 Check
Pin #3,4
≥
30dBm ?
D800 Check
Pin #22
≥
30dBm ?
U600 Check
Pin#40
≤
2.3V ?
D800
Resolder or Change
YES
Check the U600
VCO600 Check
Pin #1
≒
6dBm ?