Flow Chart of Troubleshooting

9-11. Radio part

Radio does not work

Yes

C128 ≥ 1.8V

Yes

C318, C154, C136, L113 is OK?

(When U101 operate)

Yes

Check signal

related to U101

Yes

END

No

No

Resolder C128

and Check PMU part

Resolder C138, C154, C136, L114

and check U101

9-22

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Sharp SGH-F250 manual Radio part