Table of Contents
Advertisement
4. TROUBLE SHOOTING
4.5 Power On Trouble
TEST POINT
Check Points
-Battery Voltage( Need to over 3.35V)
-Power-On Key detection (PWRON signal)
-Outputs of LDOs from ABB(Triton-Lite)
WAVE FROM
CIRCUIT
R213
RPWON
TP 1
V_EXTH
V_SIM
V_EXTL
V_MMC
C154
C155
C156
C157
0.1u
1u
1u
470n
LGE Internal Use Only
END
KB200
150
VA202
EVLC14S02050
V_RTC
V_ABB
V_PLL
V_USB
V_IO
V_MEM
C158
C159
C160
C161
C162
C163
1u
1u
1u
1u
1u
2.2u
V_SIM
V_MEM
TP1
R213
Copyright © 2008 LG Electronics. Inc. All right reserved.
- 54 -
V_ABB
V_SIM
U300
X100
VBAT
R126
3.3
C136
1u
L103
2.2uH
D100
VRWLED
SDB0530
C143
2.2u
Only for training and service purposes
Advertisement
Table of Contents
