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Flow Chart of Troubleshooting
3-5
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3-1-2. Initial
Initial Failure
The pin #G11 of UCP301 =
1.8V and
the pin #J12 of UCP301 =
2.8V ?
Check the
UCP301
(if it has some problem, it is to be replaced.)
Yes
No
Is the pin #K9 of UCP301
"Low
→
High" ?
Yes
No
Check the
UCP301
(if it has some problem, it is to be replaced.)
There is 32.768kHz wave
forms at the C228 and C229
Yes
No
Check the
UCP201
The voltage is "High" at the
C312,C313,C314
Check the
UCP301
LCD display is O.K
No
Yes
Yes
Check the LCD part
No
Sound is O.K
Yes
No
Check the Audio part
END
Yes