64
4. Troubleshooting
Failure Display Codes
Information code
Meaning
Solution
C-d0
Shorted key
1 .
Check whether cable from the keypad has been inserted
into connector on Sub PCB .
2 .
Check Sub PCB keypad connector for shorts .
3 .
If no problems are found with Sub PCB keypad connector
replace the Sub PCB .
Sub PCB
CN701
C-d0
*Disconnect power .
*Take out keypad from the Sub PCB .
* Check connector CN701 pins on Sub PCB for
shorts .
* Check keypad membrane for shorts .
No
No
Yes
END
END
* Replace or repair Membrane .
* Repair any shorts or damaged areas
on Sub PCB .