LG KP105 - Page 77

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4. TROUBLE SHOOTING
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START
I/O Connector(CN301)
Is well-soldered ?
Is The Voltage of TP1 AND TP2
Between 4.8 and 6.4V ?
The Voltage of TP3 AND TP4
Is over 2.5V
YES
YES
YES
Check the voltage of TP5
High or Low?
YES
Battery is charged?
YES
Charging is
properly operating
NO
NO
LOW
NO
NO
Resolder the CN301
Pin 12,13 : VCHARGE
The TA is out of order
Change the TA
Replace the
U102
Check the U103
The battery may have
problems.
Change the battery.
Checking Flow