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Flow Chart of Troubleshooting
10-26
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10-1-10. FM Radio part
FM Radio function does not work
The voltage at R441
is high ?
Replace R435
Check U102
Check U201
The voltage is 2.9V
at R435 ?
The voltage is 2.9V
at C116 ?
The voltage is 2.9V
at C455 ?
The voltage at
#2 pin of U703 &
L501 is 1.8V?
Check U703
Check U404
Are there any
signal at L404?
Are there any
signal at R425?
Check R425
& replace Earphone
Are there any signal
at C423, C424 ?
Check U404
Check speaker part
YES
YES
YES
YES
YES
YES
NO
NO
NO
YES
NO
NO
YES
YES
NO
NO
NO