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6-1-4 Abnormal Key Data input
Check initial status
Scanning signals
output from U104, pins 5C, 48,
5D, 4A, 6C, 5A, 6D?
Check U104 pins 2A, 4C, and 3B
Check CON102-24.
Normal key data input?
Yes
Yes
Yes
Yes
END
SAMSUNG Proprietary-Contents may change without notice
Check U104 pins
No
5C, 48, 5D, 4A, 6C, 5A, 6D
No
Replace the keypad assembly
6-4
Troubleshooting
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