3.
Flow Chart of Troubleshooting
3-1
3-
1. Baseband
3-1-1. Power ON
check the current
consumption
>= 100mA
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'Power ON' does not work
No
Yes
Yes
END
Yes
Check the Initial Operation
Yes
Charge the battery
No
Check the Voltage
of the Battery
>= 3.3V
check keypad
No
Check the pin
C100,C101,C102 of
UCP101 is >= 2.8V
>=2.8V
Check "Power
On"
key?
No
check
UCP101
and
C101
Yes
1
Check the clock signal
at pin #3 of OSC400
Freq=26Mhz,
Vrms >=300mV
No
Check the clock generation
circuit OSC400
Yes
2