Samsung SGH-E840 Service Manual page 19

Flow Chart of Troubleshooting
C130
13M_BUF
VLDO1_1.5V
VRF_2.9V
U101
1 VCC 6
NC
2 NC 5
A
3 GND 4
Y
R116
D300
VCCD_1.8V
L300
U301
10
1
SW2
ADJ2
9 2
EN2 MODE|DATA
8
3
GND VIN
7 4
EN1 FB1
6
5
SW1 DEF_1
11
L301
3-4
R115
R117
C133
R120
HP_CORE_1.575V
C326 C327
C131
CLK13M_TR
C132
CLK13M_MC
C137
CLK13M_YMU
VBAT
C325
C328