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7. SGH-Z107Flow Chart of Troubleshooting
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7-1
1. Power On
Check the Battery Voltage
is more than 3.3V
' Power On ' does not work
Change the Battery
END
No
Yes
U786PIN27(PS_HOLD)
= 2.6V?
Check the PMIC related to PS_HOLD
No
Yes
Check the Clock at
R610=32KHZ
Resolder OSC610
No
Yes
C630(VDD_C) = 2.8V?
Check the PMIC
No
Yes
C633(VDD_P) 2.8V&
C629(VDD_A) = 2.6V?
Check the PMIC
No
Yes
Check for the clock at
C670= 19.2MHz
Check the clock generation circuit
(related to OSC202)
No
Yes
Check the initial operation
Yes
Yes
