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