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Level 3 Repair
8-5
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8-3-1. Power On
Check the Battery Voltage
is more than 3.3V
' Power On ' does not work
Change the Battery
(Because of batt. power low)
END
No
Yes
Check U503 (PMIC) and
Power on voltage
(C826 >1.1V, C828 >1.1V,
C830>1.8V)
Check the problem point (short, open, crack etc)
and If PMIC has problem, change U807
No
Yes
Check the Clock at
OSC801 that
Frequency is 32K Hz
Check the clock generation circuit
(related to OSC801)
No
Yes
Yes
check the current consumption
Yes
check current consumption
>=100mA
Download again
check the initial operation
Yes
No
Yes
Check Resistance Values of
C322, C323, C826, C828,C830,
TA800 Are the values are less
than 100 ohm?
Replace capacitor or capacitors that has/have less
than 100 ohm resistance.
Yes
No