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Flow Chart of Troubleshooting
9-4
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9-1-2. Initial
Initial Failure
The pin #C12 of U100 =
1.8V and
the pin #J12 of U100 =
2.8V ?
Check the
U100
(if it has some problem, it is to be replaced.)
Yes
No
Is the pin #K9 of U100
"Low
→
High" ?
Yes
No
Check the
U100
(if it has some problem, it is to be replaced.)
There is 32.768kHz wave
forms at the C209 and
C210
Yes
No
Check the
U200
Is the pin #3 of U105 &
U106 "High"?
The voltage is "High" at
the C111,C106
Check the
U100
Check the
U105 & U106
LCD display is O.K?
No
No
Yes
Yes
Yes
Check the LCD part
No
Sound is O.K?
Yes
No
Check the Audio part
END
Yes