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4. TROUBLE SHOOTING
START
I/O Connector
(CN301) is well-
soldered?
Voltage at Anode
of D102 = 5.2 V ?
Q100, D102, R106
are well-soldered?
Voltage
across R106 is about
10~100mV?
Battery is OK?
Charging is
operating properly .
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
Re-solder the CN301 (Pin
4,5:VCHARGE, Pin 12,19:GND)
The TA is out of order .
Change the TA .
Resolder the
Q100 , D102, R106
Replace the Q100 , D102
The battery may have
problems . Change the battery .
18
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