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Flow Chart of Troubleshooting
7-16
7-8. Key Data Input
When one of the keys is
pushed,
Isn't it displayed on LCD?
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?
Check the D702~D715 Direction.
& Replace Volume Key FPCB or
Camera Key FPCB or Replace the PBA
No
Yes