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9-1
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9. Flow Chart of Troubleshooting
9-1. Power On
' Power On ' does not work
Yes
Yes
No
Download again
Check the VBAT
more than 3.3V
No
Check the Battery
Yes
Check the related circuit
No
TA301(VBAT) = 3.0V?
Yes
①
Check the
U303
No
Check the 1.8V_MEM of
U303 is more than 1.8V
Yes
Check U300
3.0V_DIG = 3.0V
3.0V_ANLG = 3.0V
1.2V_ANLG = 1.2V
②
No
Check the
U303
and
C328, C327,
C319
Yes
③
Yes
Yes
Check the clock
32KHz_DIGIT
No
Check CLK32K
Freq = 32KHz
Check the initial operation
END
Check the current
consumption more than
100mA
Summary of Contents for GT-i6220
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