imageCLASS MF753Cdw II Black vertical marks along left side

[aschane]

Purchased MF753Cdw II Nov. 24, 2025. After 325 prints, have black vertical marks along left side.

I called Canon support and they said it was the black toner from the starter ink toner as no other error messages came up. I did all the maintenance per the Home Screen to do all the adjustments. Received replacement toner this morning. The streaking still appears. Before I call Canon again for the long long wait, wondering if anyone had the same issue and found a solution. Was told by Canon support that this is a newer printer. Installed all the current print drivers too. I purchased it from Best Buy and missed the return window time. Any suggestions? 

 

[shadowsports]

Greetings,

Very sorry you're dealing with this...I have two Canon lasers and both have been a dream. 

I wonder if some toner has spilled inside.

The bright side.  Canon laser printers have a 3 yr warranty.  You've done the right thing calling support.  Just continue working with them. I'm sure they will get it sorted or make it right.