Chart Of Troubleshooting - Samsung GT-B3410 Service Manual

9. Flow Chart of Troubleshooting
9-1. Power On
' Power On ' does not work
Check the battery voltage is
more than 4.2V or less than 3.
C326(VISA) = 2.42 ~ 3.09V?
Check the Clock at
U313 H4pin (CLK32K)=32KHZ
C308(+VDD_IO_HIGH) = "H"?
+VDD_GSM_CORE
= 1.2V?
Check the initial operation
Yes
5V
Yes
Yes
Yes
Yes
Yes
Yes
END
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No
Change the Battery
No
Resolder C326
No
Resolder OSC300, C328, and C331
No
Check the related circuit
No
Resolder L300
9-1