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9. Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
9-1
9-1. Power On
Yes
U708 pin57(PS_HOLD)
=2.6V
Yes
Check the clock at
osc400=32KHz
Yes
C415(VREG_MSMC)=1.3V
Yes
C416(VREG_MSME)=1.8V
C414(VREG_MSMP)=2.6V
C420(VREG_MSMA)=2.6V
C428(VREG_TCXO)=2.8V
Yes
Check for the clock at
c228=19.2Mhz
power on does not work
Check the Battery Voltage
is more than 3.3V
change the batteryt
No
Check the PMIC related to
PS_HOLD
No
Resolder OSC400
No
Check the PMIC
No
Check the PMIC
No
No
Check the clock generation
curcuit (related to TCX200)
Check the initial operation
END
Yes
Yes
Yes
Summary of Contents for SGH-P940
Page 52: ...7 Block Diagrams 7 1 ...
Page 53: ...Block Diagrams 7 2 ...
Page 54: ...8 PCB Diagrams 8 1 Top ...
Page 55: ...PCB Diagrams 8 2 Bottom ...