why the printer prints red lines everytime now?

[liazi]

Hello 

I have a MF733 cdw printer, but now every page it prints, it have these red lines. why?

Thanks,
Wenling

[shadowsports]

Greetings,

Is that logo something you are intentionally printing?

It looks like a chevron....  which is part of the printers standard maintenance...  cleaning the automatic fixing assembly.

Are you using Canon branded toners?  

[liazi]

Hi Thank you for the reply.

Yes, I was trying the maintaince yesterday on the printer and one of the maintaince prints this chevron. However even if I print a blank document out from the printer, it will still have the red lines on every page..

Thanks,

Liazi

[shadowsports]

Greetings,

Still not clear.  are you using Canon branded toner?

If, "Yes, I was trying the maintenance yesterday" means you are, then I suggest you contact Canon.

The printer has a 3 yr warranty.  

If you are not using Canon toner, I suggest you replace with OEM branded toner.