Power On Trouble - LG KF600d Service Manual

5. Trouble shooting

5.2. Power on Trouble

Check Points
-Battery Voltage( Need to over 3.35V)
-Power-On Key detection (PWRON signal)
-Outputs of LDOs from PMIC
RPWRON_EN
SPOWER_INT
LGE Internal Use Only
R235
10K
R236
C275
10u 100K
END_KEY_IN
2V62_VIO
EXTRSTn
_RESET
- 72 -
2V11_RTC
R233
100K
TP1
R234
2V11_RTC
TP2
7 8
A1 VCC
6 1
B1 Y1
5 2
Y2 B2
4 3
GND A2
C282
0.1u
U208
NC7WZ08L8X
Copyright © 2007 LG Electronics. Inc. All right reserved.
PWRON
RPWRON
0
PM_INT
PMRSTn
Only for training and service purposes