Canon Imagepro IPF770 - Printhead and inkflow issue

[ukneil]

Hi,

I am uk based.

I have just bought a second hand canon IPF770 as it was sold as needing a new printhead and it been stood
for over 6 months.

So when I turned it on with maintenance cartridge and ink installed a message came up "Printhead error - replace printhead"

I purchased a new printhead and have installed but still get "Printhead error"

I then noticed the 6 inklines running along the side the were some gaps and air bubbles like not reaching the printhead.

So I then did head clean A & B which it looks to have push ink through to printhead.

But I am still getting the same error message.

Please can anyone help if I can save this printer with any tube cleaning / printhead cleaning.

Thank you