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Flow Chart of Troubleshooting
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3-4
3-1-2. Initial
The voltage at the C215=1.8V?
The voltage at the C218=2.8V?
Initial Failure
The voltage at the VR301
" Low --> High" ?
There is 32.768KHz wave
form at the C317, C318 ?
The voltage is 2.8V
at the C216,C217,C218 ?
LCD Display OK ?
Sound operation OK ?
END
Check the UCP300
Check the U838
Check the LCD part
Check the Audio part
YES
NO
NO
NO
YES
YES
YES
YES
NO
NO
NO
YES
Check the U838
(If it has some problem,
it has to be replaced.)
Check the U838
(If it has some problem,
it has to be replaced.)