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10.
Flow Chart of Troubleshooting
10-1
10-1 BASEBAND
10-1-1. Power ON
'Power On' does not work
Check the Vbat
Voltage >=3.3V
Download again
Charge the Battery
UCP101 pin# J12
>=2.9V
Check U105
There is 26MHz wave
form at the TCX101
pin#1,3
Check the clock generation
circuit
(related to TCX101)
Check the initial operation
END
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Check the pin of UCP101
Check the clock signal at pin#3 of TCX101
Check the Current
consumption
>= 100mA
UCP101 pin#
A13,A14 >=2.9V
U105 pin#4 >=1.6V
No
Check UCP101
Check UCP101
1
1
2
3