LG KE600 Service Manual - Page 79
Charging trouble
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5. Trouble shooting 5.3 Charging trouble Check Points -Connection of TA (check TA voltage 4.8V) -Charging Current Path component voltage drop -Battery voltage • Charging method : CC-CV • Charger detect voltage : about 4.0V • ChCharging time : 3h under • Charging current : 600mA • Cutoff current : 100mA • Low battery alarm - Idle : 3.50V -. Dedicated : 3.58V • Switch-off voltage : 3.35V • Charging temperature ADC range - ~ -20°C : small charging operation. - -20°C ~ 60°C : charging. - 60°C ~ : not charging operation small charging operation. VCHG R209 C227 100K 10u Q201 6 S2 4 S1 1 D3 2 D2 5 D1 3 G NDC652P D201 CRS08 C228 47n VCH_CTL R212 0.15 VBAT VCHS C237 100u - 80 -
5. Trouble shooting
- 80 -
5.3 Charging trouble
Check Points
-Connection of TA (check TA voltage 4.8V)
-Charging Current Path component voltage drop
-Battery voltage
•
Charging method : CC-CV
•
Switch-off voltage : 3.35V
•
Charger detect voltage : about 4.0V
•
Charging temperature ADC range
•
ChCharging time : 3h under
- ~ -20
°
C : small charging operation.
•
Charging current : 600mA
- -20
°
C ~ 60
°
C : charging.
•
Cutoff current : 100mA
- 60
°
C ~ : not charging operation small
•
Low battery alarm
charging operation.
- Idle : 3.50V
-. Dedicated : 3.58V
VBAT
CRS08
D201
R209
100K
C228
47n
5
D1
D2
2
1
D3
3
G
4
S1
6
S2
NDC652P
Q201
VCHG
C227
10u
C237
100u
R212
0.15
VCH_CTL
VCHS