https://community.usa.canon.com/t5/Office-Printers/imageCLASS-MF753Cdw-II-Black-vertical-marks-along-left-side/m-p/586342#M30634 <P>Greetings,</P> <P>Very sorry you're dealing with this...I have two Canon lasers and both have been a dream.&nbsp;</P> <P>I wonder if some toner has spilled inside.</P> <P>The bright side.&nbsp; Canon laser printers have a 3 yr warranty.&nbsp; You've done the right thing calling support.&nbsp; Just continue working with them. I'm sure they will get it sorted or make it right.&nbsp;&nbsp;</P> Wed, 11 Feb 2026 03:34:56 GMT shadowsports 2026-02-11T03:34:56Z https://community.usa.canon.com/t5/Office-Printers/imageCLASS-MF753Cdw-II-Black-vertical-marks-along-left-side/m-p/586337#M30632 <P>Purchased MF753Cdw II Nov. 24, 2025. After 325 prints, have black vertical marks along left side.</P> <P>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?&nbsp;</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="IMG_2900.jpeg" style="width: 400px;"><img src="https://community.usa.canon.com/t5/image/serverpage/image-id/73481iBE1C23F271A11FD6/image-size/medium?v=v2&amp;px=400" role="button" title="IMG_2900.jpeg" alt="IMG_2900.jpeg" /></span></P> <P> </P> Wed, 11 Feb 2026 14:40:51 GMT https://community.usa.canon.com/t5/Office-Printers/imageCLASS-MF753Cdw-II-Black-vertical-marks-along-left-side/m-p/586337#M30632 aschane 2026-02-11T14:40:51Z https://community.usa.canon.com/t5/Office-Printers/imageCLASS-MF753Cdw-II-Black-vertical-marks-along-left-side/m-p/586342#M30634 <P>Greetings,</P> <P>Very sorry you're dealing with this...I have two Canon lasers and both have been a dream.&nbsp;</P> <P>I wonder if some toner has spilled inside.</P> <P>The bright side.&nbsp; Canon laser printers have a 3 yr warranty.&nbsp; You've done the right thing calling support.&nbsp; Just continue working with them. I'm sure they will get it sorted or make it right.&nbsp;&nbsp;</P> Wed, 11 Feb 2026 03:34:56 GMT https://community.usa.canon.com/t5/Office-Printers/imageCLASS-MF753Cdw-II-Black-vertical-marks-along-left-side/m-p/586342#M30634 shadowsports 2026-02-11T03:34:56Z