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10. Flow Chart of Troubleshooting
10-1.Baseband
10-1-1. Power ON
① Flow chart of Power ON
'Power On' does not work
Check the current consumption
Current
consumption
>= 100mA
Check the Vbat Voltage
Voltage >=3.3V
The pin 3 of D402
is high?
Check the PMIC
output voltage.
(C418, C420, C413,
C423, C416)
check the TCXO100
19.2Mhz?
Check the initial operation
END
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
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Charge the Battery
Check D402
check the PMIC
Check the clock generation circuit
(related to TCXO100)
10-1
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