Charging Trouble - LG MG150 Service Manual

4.6 Charging Trouble

• Charging method : CC-CV
• Charger detect voltage : about 5.2V
• Charging time : under 3hours
• Charging current : 500mA
• Cutoff current : 50mA
• Low battery alarm
-. Idle : 3.55V
-. Dedicated : 3.65V
4.2V~3.94V
Block Diagram
CHARGER
VCHG
ICTL
3.93V~3.78V 3.78~3.70V
C215
R211 C217
4.7u
100K 0.022u
(1608)
- 49 -
4. TROUBLE SHOOTING
• Switch-off voltage : 3.35V
• Charging temperature adc range
-. ~ -5# : not charging operation.
-. -5# ~ 50# : charging.
-. 50#~ : not charging operation.
3.69V~3.65V
VBAT
R217
D200
0.2
CUS02
(2012)
R214
15
Q200
NDC652P
3.64V~3.35V
C233
4.7u
(1608)