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Flow Chart of Troubleshooting
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7-3
7-2. Initial
The pin#G11 of U300 = 1.8V
and
the pin#J12 of U300 ≒ 2.825V ?
Initialization Failure
END
No
Yes
Is the pin#K9 of U300
"Low -> High"?
Yes
Check the U200
32.768kHz wave forms at
the C220 and C221
Check the LCD Part
Yes
No
Yes
Yes
The Voltage is "High" at
the C114
Check the Audio Part
No
Check the U300
LCD display is O.K
No
No
Yes
Yes
Sound is O.K
No
Check the U300
(If it has some problem, adjust it.)
Check the U300
(If it has some problem, adjust it.)