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Flow Chart of Troubleshooting
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9-4
9-1-2. Initial
Initial Failure
YES
Check VCCD,
VDDC_1.8V of U300
"High" when the phone
is boot on
Check U300
NO
Check the VCCD_1.8V
of U307 is "High"
YES
Check U307
NO
YES
Check HDC501 and LCD PART
NO
LCD display is O.K?
YES
Check Audio PART
NO
Sound is O.K?
YES
END