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Flow Chart of Troubleshooting and Circuit Diagrams
3-5
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3-1-2. System Initial
Initial Failure
Check the VCCD_1.8V of UCD301
"High" When the phone
is boot on
Check the VCCD_1.8V of
U302 is "High"
LCD display is O.K?
Sound is O.K?
END
Check UCD301
Check U302
Check CN301 and LCD part
Check Audio part
YES
YES
YES
YES
YES
NO
NO
NO
NO