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4. SGH-C100 Flow Chart of Troubleshooting
4-
1
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1. Power ON
Check the current
consumption more than
100mA
'POWER ON' does not work
Check the Voltage of the
Battery more than 3.3V
Download again
Charge the Battery
Check the capacitor C236
close by U200(MSD) is
more than 3.2V
Check to the path from CN402 to
capacitor C236 close by U200(MSD)
2.7V≤ C234 of
U200(MSD)
= 2.8V
Check the MSD(U200)
Check the TP222 of
U200(MSD) is high≒2.8V
Check the CX805-31P(U300)
Check the initial operation
END
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No