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SGH-Z130 Flow Chart of Troubleshooting and Circuit Diagrams
2-
19
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2-2-2. EGSM Transmitter
Tx ON
(Level : 5)
battery voltage : 3.8V
CON800 Check
Pin #2
≥
30dBm ?
YES
NO
U801 Check
Pin #3
≥
30dBm ?
U600 Check
Pin #8
≥
30dBm ?
U601 Check
Pin#37
≤
2.3V ?
Check the CON800
U801
Resolder or Change
U600 Resolder or Change
THE END
NO
NO
YES
YES
YES
Check the U601
OSC600 Check
Pin #1
≒
6dBm ?
OSC600 Resolder or
change
NO
YES
NO