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6-1-4 Abnormal Key Data Input
Check initial status
Scanning signals
output from U104 pins 4A,
4B,5A,5C,5D,6C,
Check U104 pin 2A,4C, and 3B
Check CON J1.
Normal key data input?
5E.?
Yes
Yes
Yes
Yes
END
SAMSUNG Proprietary-Contents may change without notice
Check U104 pins
No
4A,4B,5A,5C,5D,6C,5E
No
Replace the keypad assembly
6-4
Troubleshooting
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- Circuit Diagrams
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