Banding on photos from a canon pro 300

[Clawhammer]

This seems to be a common problem here has anyone found a common reason?? My printer suddenly decided to print bands in the first 40mm of the print on A3 paper, did the roller cleaning and nozzle checks all ok, tried a smaller print test on a5, no bands!!! sent an A3 through, yes bands again!!!! has anyone any idea's 

[Patrick]

Hi Clawhammer,

Please contact one of Canon's Technical Support Representatives via phone or chat. To contact a Technical Support Representative, please use the link below to log into your My Canon account:

https://mycanon.usa.canon.com

Once logged in, click on your PRO-300 and then click on the Product Support button to access available support options.

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