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Flow Chart of Troubleshooting and Circuit Diagrams
3-31
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3-2-6. BLUETOOTH
Check pin #5,7 of
U103
≥
-6dBm
Bluetooth does not work
END
Resolder U101
Resolder C152,L111,ANT100
Check the signal of ANT100
Pin #3 of U101 = 1.8V
Check pin #3 of
U103
≥
-6dBm
Resolder U103
YES
YES
YES
YES
NO
NO
NO
NO
Resolder U102,U103
Summary of Contents for SGH-S720i
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