Samsung GT-i5700 Service Manual page 28

Flow Chart of Troubleshooting
9-1-2. Phone Part
'Phone Power On ' does not work
Check the Battery Voltage
is more than 3.5V
Check followings :
C404 is 2.7V
C416 is 1.3V
C420 is 1.8V
Check C419 is 2.6V
Check pin 1 of U301
is 'H'
Check C424 is 2.6V
Check the
TP_TCXO_EN is "H" and
C422 is 2.85V
Check R409 is 'H'
Check the initial operation
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
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No
Change the Battery
No
Check the U401
and the related cuircuit
No
Check the U401
No
Check the U302 and related circuit
No
Check the U401
No
Check the U401
and the related cuircuit
No
Check the UCP300
and the related cuircuit
9-4