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Level 3 Repair
8-10
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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 U501 (PMIC) and
Power on voltage
(C553 >1.1V, C554 >1.1V,
C557 >1.8V)
Check the problem point (short, open, crack etc)
and If PMIC has problem, change U502
No
Yes
Check the Clock at
OSC501 that
Frequency is 32K Hz
Check the clock generation circuit
(related to OSC501)
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
C562,C564,C565, C519,
C520, C566 Are the values
are less than 100 ohm?
Replace capacitor or capacitors that has/have less
than 100 ohm resistance.
Yes
No
