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10. Flow Chart of Troubleshooting
10-1.Baseband
10-1-1. Power ON
Battery connect (no Power on)
Check the current consumption
Current consumption
〓 0mA ?
Power on by power_on Key
'Power on' Does not work
Check the current consumption
Current consumption
Check the Vbat. Vortage
Voltage ≥ 3.3V ?
Check UCD300 LDO output
C312 = 1.8V ?
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YES
≥ 150mA ?
YES
YES
YES
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NO
check D1(TDZ5.6) and Power part
(DC/DC Converter and LDO).
NO
NO
NO
10- 1
Down load again
Charge the battery
Check the UCD300
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