Samsung SGH-E360 - Key Data Input Troubleshooting

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Flow Chart of Troubleshooting
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7-15
7-7. Key Data Input
When one of the keys is
pushed,
Isn'titdisplayedonLCD?
Check the Dome sheet & Key Pad
END
No
Yes
Yes
Check Initial Operation
When one of the keys is
pushed,
KEY_ROW(0,4),
KEY_COL(0,4)
signal is OK?
Resolder ZD701,702,703
&ReplacethePBA
No
Yes