Samsung MultiXpress K7 Series Service Manual page 469

5) Home screen icon is disappeared or UI screen is broken.
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Symptom : Home screen icon is disappeared or UI screen is broken.
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Cause :
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UI software error
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Troubleshooting
1) Enter SVC mode. (Refer to 4.5.1)
2) Execute "Main Memory Clear" (Service Functions > Main Memory Clear)
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4. Troubleshooting
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