External Battery - Samsung SGH-F300 Service Manual

3-1-8. External Battery

The SGH-F300 does not detect
the external battery
Check the state of the 3-pin connector
between SGH-F300 and External battery, External battery voltage.
Check the state of 3-pin connector
In external battery is OK?
Check the voltage of
External Battery
Check the voltage of
External Battery
SAMSUNG Proprietary-Contents may change without notice
YES
Vext > 3.2 ?
YES
Vext > 3.2 ?
YES
END
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NO
Replace the external battery
NO
Replace the external battery
NO
Replace the 3-pin connector in SGH-F300
3-21
Flow Chart of Troubleshooting