MG7720 Alignment not properly corrected when using auto alignment

[andrejfavia]

GREETINGS. I am having a problem with my MG7720 similar to the problem described at:

https://community.usa.canon.com/t5/Printer-Multifunction-Support/MG7720-Printing-lines-of-wavy-broke...

In the past month or two, somehow, my printer will not print in exact straight lines. They appear broken into segments. See the following:

http://i64.tinypic.com/o73fdi.jpg

I tried using the MG7720 auto alignment procedure. That didn't work.

I tried following the process located at:

https://support.usa.canon.com/kb/index?page=content&id=ART143852

However, I am not able to complete step 7, because my fingers keep slipping off the tab when I try to "grab the top of the center tab and pull out," and the rest of the body of the printer is in the way of my hand to attempt to get leverage to get more friction.

What's going on? How do I fix this?

[Patrick]

Hi andrejfavia,

Based on your description of the issue, it would appear as though the encoder/timing strip in your PIXMA MG7720 is dirty or smudged and would need to be cleaned. To clean the encoder/timing strip, please follow the steps outlined in the following Knowledgebase Article available from Canon's web site:

https://support.usa.canon.com/kb/index?page=content&id=ART164632

After cleaning, please attempt to print again.

If you continue to have difficulties, please contact our support group using the following link:

http://Canon.us/ContactLI

[andrejfavia]

Wow yeah there was a lot of grease on the timing strip. I don't have any Q-tips, so I used a microfiber cloth and 50% iso solution on the corners of the cloth.

Then I did:

Auto align - Print a test page - Cleaning - Print a test page again - Auto align again

The problem is not yet remedied. I still get some not-straight segments, for example, on the outline to the left of the graph to the right and below the middle of the page (see attached).

With regard to the Support Group, what sequence of options should I choose? I am worried that I will have to pay money to get this fixed and I don't want to do that. [Image removed due to copyright concerns.]

[Patrick]

Hi andrejfavia,

There is no cost to contact us.  To contact a Technical Support Representative, please use the link below:

http://Canon.us/ContactLI