Samsung SGH-P520 Service Manual page 40

10-2-2. Initial
Initial Failure
Check VCCD,
VCCD_1.8V of UCP300
"High" when the phone
is boot on`
Check
the HP_CORE_1.6V of
U302 is "High"
LCD display is O.K?
Sound is O.K?
END
Yes
Yes
Yes
Yes
Yes
①
No
Check UCP300
②
No
Check U302
③
No
Check CN600 and LCD part
No
Check audio part
10-5
Flow Chart of Troubleshooting