Samsung ME21F707MJT Service Manual page 36

5. Troubleshooting
5-2-1 Touch Communication Error
NO
does the symptom continue?
Perform the operation again and check if it
"TE" is displayed.
Is the key not recognized
at all?
NO
Is the key recognized
intermittently?
NO
Is a specific key
not recognized?
NO
S/W Error
After Power > On,
YES
Replace the PCB
(Sub Module).
is working properly.
YES
YES
YES
The membrane
is defective.
Replace the Assy Door-A
(Include switch membrane).
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