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9. Flow Chart of Troubleshooting
9-1
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9-1.Baseband
9-1-1. Power ON
'Power On' does not work
Voltage >=3.3V
Download again
Charge the Battery
Pin#J12 >= 2.8V
Check U100 and C110
Pin#A13 and
pin#A14 =2.8V
Check U100, U105 and U106
Freq = 26MHz
Vrms >=300mV
Vpp
≒
900mV
Check the clock generation circuit
(related to 3pin of OSC600, C602, R601)
Check the initial operation
END
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
pin#G11 =
1.5V
No
Yes
Check the current consumption
Check the Vbat Voltage
Check the pin of U100
Check the clock signal at C601
Current consumption
>= 100mA