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Flow Chart of Troubleshooting
7-
14
7-7. Key Data Input
When one of the keys is
pushed,
KEY_ROW(0.4)
KEY_COL(0.4)
signal is OK?
Yes
No
Replace the PBA
Check Initial Operation
Yes
Yes
No
END
Check the Dome sheet & Key Pad
When one of the keys is
pushed,
is it displayed on LCD?