Sharp SGH-F250 - Manual (Page 61)

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Flow Chart of Troubleshooting
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9-33
9-18. Bluetooth part
Bluetooth connection disable
Yes
Check BT function ON Enable BT function
No
Yes
Check the voltage of
U305 is around 1.8V
No
Check U305 and change
Check 26KHz Clock on
U101
Yes
Check OSC100
No
Yes
Check the assembled
status of ANT102
No
Resolder of change ANT102
Yes
Exchange U101
Yes
END
Check UCP200
No