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Flow Chart of Troubleshooting
10-11
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10-1-6 FM radio part
FM Radio dose not work
NO
Yes
Check the supply voltage (L606)
Voltage Vbat is 3.6V ~4.2V
Resold or change L606
Check the IO voltage at
C623 1.5V ~3.6V
Check the C623
Check RTC CLK at TP303
the frequency is 37.768Khz
Check the TP303
and check B.B or RTC
battery(M401)
Check I2C control
SDA, SCL signal is comming
out
Check the R514, R515
END
Summary of Contents for SGH-L770
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