LG F1200 Service Manual page 40

• Charging Temperature ADC Range
- ~ -20°C : No Charging operation
- -20°C ~ 60°C : Charging
- 60°C ~ : No Charging operation
3.93V 3.92V~3.78V
*STB : Standby mode (* When talk mode, the battery icon starts blinking below 3.62V level)
Block Diagram
VCHG
GND
TA
CN 402 CN 402
• Charging Procedure
- Connecting TA & Charger Detection
- Control the charging Current by ABB
- Charging Current flow into the Battery
• Check Points
- Connection of TA
- Charging Current Path
- Battery
• Trouble Shooting Setup
- Connect Battery & TA to the handset
• Trouble Shooting Procedure
3.78V~3.70V 3.70V~3.62V
Charging Current
FB2
Q400 Q400
FB1
VCHG
ICTL
Syren Syren
PCHG
VCCS
VBATS
Figure 25. LCD connector scheme
- 39 -
4. TROUBLE SHOOTING
3.62V~3.5V (STB)
R403
D400
R407
VBAT
C405
Blinking
3.5V~3.35V
Battery
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