LG KG271 - 4.14 Charging Trouble

4. TROUBLE SHOOTING
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4.14 Charging Trouble
Check Points
-Connection of TA (check TA voltage 5.2V)
-Charging Current Path component voltage
drop
-Battery voltage
-Charging IC
TEST POINT
CIRCUIT
(10V,K,X5R)
CHARGING IC
(1%)
(10V,K,X5R)
1u
C126
2V8_VIO
VCHARGE
NA
R120
NA
R118
1.8KR119
0.015u
C127
160K
R124
VBAT
1u
C125
NAR123
R125
100K
R121
NA
2
_FAULT
_STATUS
3
6
ENGND
5
8
IREF
11
PGND
TIME
47
V2P8
10
VBATVIN
1
VSEN_TEMP
9
U101
ISL9201IRZ-T
0R122
C128
1u
VCHARGE
CHG_EN_TEST
CHG_STATUS
CHG_EN
CHARGE_DETECT
Charger
IC
U101
C125
C126
R124
CN301
VCHARGE
=5.2V
VBAT