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9. Flow Chart of Troubleshooting
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9-1
9-1. Power On
Check the Battery Voltage
is more than 3.4V
' Power On ' does not work
Change the Battery
END
No
Yes
C512 = 2.7V?
Check the PMU related to the ISUP
No
Yes
Check the Clock at
R504=32KHZ
Resolder X500
No
Yes
C532 (VDD1) = "H"?
Check the VDD1 circuit
No
Yes
C531(VDD2) & C533(VDD3)
= 2.85V?
Check the VDD2,VDD3 circuit
No
Yes
Check for the clock at C121
= 13MHz
Check the clock generation circuit
(related to U100)
No
Yes
Check the initial operation
Yes
Yes