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Flow Chart of Troubleshooting
10-3
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10-1-2.
System Initial
①
Flow chart of System Initial
YES
NO
NO
YES
YES
YES
NO
NO
NO
YES
The pin
#9
of
U400
"
Low
-->
High"
?
Check the Sleep X-
tal signal's
at
C412
Check the clock
signal's
at
R114
LCD Display OK
?
Sound operation OK
?
Initial Failure
Check the
U400
END
Check the OSC
400
Check the clock generation
circuit
(
related to
U400
and
TCX
O100)
Check the LCD part
Check the Audio part
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