imagePROGRAF GP-4000 error code EC51-404C

[JasonH31]

I just got this error code -- EC51-404C -- from my still under warranty GP-4000. I had finished a print and just sent another to the printer. Any help would be appreciated. Thanks! Jason

[shadowsports]

Greetings,

Power off the device and disconnect from power.  Press and hold the power button for 1 min.  Reconnect to power, power on and try to print, if the error reoccurs, you need to contact canon.  

[JasonH31]

Thanks but didn't work -- printer needed a new main board.

[alexmg]

Hello, good morning. I have the same error as you, but in Canon Pro 2100, could you please guide me on how you solved the error?

[JasonH31]

In my case the only solution was to contact Canon and have the main board of the printer replaced. I first unsuccessfully tried the solution that Shadowsports suggested above. Best of luck!