Only For Training And Service Purposes - LG GW520 Service Manual

5. Trouble shooting
Circuit Diagram Circuit Diagram
TP1
TP1 TP1 TP1
RPWRON_EN
Checking Point Checking Point
LGE Internal Use Only
VBUS_USB
U302
TP2
TP2 TP2 TP2
1
IN
2
ISET
3
VSS1
4
LDO
5
ITERM
C331
R315 R314
C332
820 2K
1u 0.1u
VBUS_USB
FL300
CN301
SFEY0006501
NFM21PC105B1A3
MUIC_DM
R305 220
MUIC_DP
R306 220
MUIC_ID
HB-1T1005-221JT
ENRY0008101
GU071-5P-SD-E1500
TP1 TP1 TP1
TP2 TP2 TP2
TP3 TP3 TP3
FL300 FL300 FL300
GW520 service manual
2V62_VIO VBAT 2V62_VIO
EUSY0388501
BQ25040
R312
100K
11
PGND
10 TP3 TP3 TP3
BAT
9
_PPR
_PG
8
CHG
7
VSS2
6
EN_SET
C330
1u
6
7
8
C314
1 L300
10p
270nH
2
3
4
5
9
10
11
U302 U302 U302
- 74 - Copyright © 2009 LG Electronics. Inc. All right reserved.
2V62_VIO
R311
TP3
R313
DNI
100K
_CHG_EOC
_CHG_EN
FM_ANT

Only for training and service purposes