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10. Flow Chart of Troubleshooting
10-1
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10-1.Baseband
10-1-1. Power ON
'Power ON' Does not work
Check the current consumption
Current consumption
≥
100mA ?
Check the V bat. voltage
Download again
Voltage
≥
3.3V ?
Check the pins of UCD301
C316
≥
1.8V ?
Check the Initial operation
END
C318 and C315 = 2.8V?
Charge the Ba ttery
Checktheclockgeneration
circuit ( TCX101, U101 pin#4)
Checktheclocksignal
at p in #3 of TCX101 or C129
Freq.=26MHz,Vrms
≥
300mV
Check UCD301 and C312
Check UCD301 and C316
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
C312=1.5V?
①
②