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10-1-2. Initial
Initial Failure
Is the RST Pin#G5(RSTON) of
U300 "Low → High" ?
The Pin #E11,E9,D8(VBAT)
of U300 >= 3.4V
There is 32.768kHz wave-
forms at the C331 and C334
of OSC300
The voltage is "High" at the
C314, C303
LCD display is O.K
Sound is O.K
END
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No
Check the
(if it has some problems, replace it.)
No
Check the
(if it has some problems, replace it.)
No
Check the
No
Check the
No
Check the
No
Check the
AUDIO
10-3
Flow Chart of Troubleshooting
U300
U300
U300
U300
LCD
part
part
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