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4.5 Charging Trouble
SETTING : Connect the battery (3.4 ~4V) and the charging adaptor (TA)to the
START
Charging Connector(CN601)
well-soldered?
Yes
Voltage at Pin 7 of U301
=5.2V?
Yes
R300, Q300, D300
well-soldered?
Yes
Voltage across
D300 =~0.3V
Yes
Voltage across
R300 is ~160mV.
Yes
~0.7<Voltage(Q300)<~1.3V
Yes
Is the battery charged?
Yes
CHARGING WILL
OPERATE PROPERLY.
- 53 -
No
Re-solder CN601.
The charging adaptor (TA) is out of order.
No
Change the charging adaptor.
No
Re-solder R300, Q300, D300.
No
Replace D300.
No
Replace R300.
No
Replace Q300
No
The battery may have the problem.
Change the battery and try again.
4. TROUBLE SHOOTING
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