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4. Troubleshooting
YES
NO
YES
NO
NO
YES
YES
NO
Key Short Error( )
Perform the operation again and check if it
is working properly.
S/W Error
Is the key not recognized
after cleaning the control panel?
Is the key recognized
intermittently?
Assy Touch PCB is
defective
Replace the
Assy Touch PCB
Is the key not recognized
at all?
After Power > On,
does the symptom continue?
Replace the sub wire
or Assy Touch PCB.
4-1-7