Samsung GT-S3850 - Find a contact; troubleshooting

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Level
3
Repair
8-6
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8-3.
LOGIC
8-3-1.
Power On
Power switch on
NG
Check the current
consumption
>= 100
mA?
Download
NO
Check the U300
Check the clock
26
MHz
?
Check the initial operation
Check the clock generation circuit
OSC200
Resolder OSC300
Change the battery
Yes
Yes
Yes
NO
NO
C220(1.28V_VCORE)=1.28V?
C211(3.0V_DIG)=3.0V?
C214(1.8V_MEM)=1.8V?
C221(2.7V_VRF)=2.7?
C224(1.3V_VRF)=1.3V?
C208(1.3V_VCXO)=1.3V?
Yes
NO
Check the clock at
OSC300
=32
kHz
?
NO
Check the battery
voltage
>= 3.45?
Yes