Table of Contents
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Charging Procedure
• Connecting TA & Charger Detection
• Control the charging Current by ABB
• Charging Current flows into the Battery
Check Points
• Connection of TA
• Charging Current Path
• Battery
Trouble Shooting Setup
• Connect Battery & TA to the handset.
Trouble Shooting Procedure
• Check the charger connector.
• Check the charging current path.
• Check the battery
Checking Flow
START
I/O Connector(CN301)
Is well-soldered?
Yes
Voltage at pin 4,6 of
U301= 5.2V ?
Yes
U301, D301, R322
Is well-soldered?
Yes
Voltage across R322
Is about 10~100mV ?
Yes
Battery ok?
Yes
Charge is operating properly
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4. TROUBLE SHOOTING
No
Resolder the CN301
No
The TA is out of order
Change the TA
No
Re solde r U301, D301,
R322
No
Replace U302, D301
No
Change the battery
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