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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
R611(U803 BB_RESET) is
2.9V?
Check the PMIC (U603)
No
Yes
Q600 outputs are
2.9V and 1.8V?
Check the Q600(Level Shifter)
No
Yes
OSC600 is 32.768Khz?
Check the OSC600
No
Yes
Each Level Shifter and PMIC
outputs are OK?
Check the PMIC(U603) related Level
Shifer output
No
Yes
Check the initial operation
Yes
Yes