Samsung NV51K6650D Service Manual page 41

4. Troubleshooting
4-1 Failure Display Codes
"C-d0"
*Disconnect power.
*Remove keypad cable from Sub PCB.
* Check for shorted cable
connectors and damage to Sub PCB.
Ok
*Check for shorts between
keypad and the cable
Ok
*Replace Control PCB. (Touch Control PCB+Glass)
END
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* Repair sub pcb if circuit is
No
No
41
shorted or damaged.
END
* Replace or repair keypad
END