User Guide

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Flow Chart of Troubleshooting
10-2
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10-1-2.
Initial
The voltage at the
C348=1.8
V?
The voltage at the
C347=2.9
V?
Initial Failure
The voltage at pin#4
of U300
"
Low
-->
High"
?
There is
32.768
KHz wave
form at the
C329,
C330
?
The voltage is
2.8V
at the C3
46,
C345?
LCD Display OK
?
Sound operation OK
?
END
Check the UCD300
Check the UCD300
Check the LCD module
Check the Audio part
YES
NO
NO
NO
YES
YES
YES
YES
NO
NO
NO
YES
Check the
U
CD300
(
If it has some problem,
it has to be replaced.)
Check the UCD300
(
If it has some problem,
it has to be replaced.)