10-24-2020 06:00 PM - edited 10-24-2020 06:07 PM
thanks for posting this. Will keep as reference.
for me, a "power cycle" worked, but as this printer ages (have had it for maybe 3-4 years, very low use at home) but this year it's just one thing after another, so I'm almost sure at some point a cleaning like the one on the video you linked will be necessary.
BTW, this is for a MG6620 model.
After 2 years of this problem, I found this forum, and I fixed the m*fo with a blend of your responses.
First I tried the 14 steps that @PDIT recommended...
The first nozzle check pattern printed faint grey squares which was obviously not right. When prompted "Which is closer for printed color patterns?", I selected "Also B", which prompted me from the printer, "Nozzle clogged, do you want to start cleaning?", so I said yes. The second nozzle check pattern came out a little more detailed, but still wrong. I cleaned once again. The third nozzle check pattern came out blank...
Then I watched the following youtube video "How to remove printhead Canon MX922, MX925 Printers" by 303 Eelctronics. (sorry coudn't attach the link)
So, I removed the ink cartridges, took out the print head and noticed that it was just as dirty as the guy's in the video, so I did what he was doing and cleaned the back with a lint-free wash rag, and a few Q-tips (note: don't touch the print pads or they will be damaged).
Then I re-inserted the print head, and cartridges (which are knock-off cartiridges I've been using for years), and printed the nozzle check pattern one more time... and BAM! It came out perfectly... I was like there is no way...
I then tried printing a personal document and it came out perfectly.
Just needs a little cleaning and hard reset I guess? Good Luck!
The nozzle test page should look like this:
10-24-2020 06:05 PM - edited 10-24-2020 06:07 PM
all of a sudden, after printing fine the night before, today I could not print. Tried 3 different devices (phone, tablet, computer) and all came black. so I knew it had nothing to do with drivers.
tried the manual (on the printer) menu for cleaning, etc; no dice.
came across your post, and performed the steps you mentioned; and it's back! (as you listed, no need for steps 5-7). since this is only used at home I might not need to do that for a while, but it's good to know how to get the printhead out for future reference.
BTW, this is for a MG6620 model.
I have seen this problem with many of the Canon 5 & 6 cartridge inkjet printer models. The symptom is that the printer suddenly stops printing ink onto the page even though the cartridges all contain ink and the print-head is not blocked. By suddenly, I mean one printjob prints perfect and the next is totally blank. Printing out a nozzle test also results in a completely blank page.
This appears to be a software issue and I have rectified this many times on multiple printers using the following method to "reboot" the software after clearing the internal memory. Note this does NOT apply if printhead is blocked with dried ink!
- Open the access to the cartridges with the printer on.
- Remove all the cartridges
- Pull the power cable and USB cable from the printer to trun it off leaving the printhead in position
- Press and hold the power button to clear any remaining charge from the powerpack
- Pull or lift the retaining bar from the printhead cradle and remove the printhead
- Check for damage or foreign objects like pieces of paper just in case!
- Replace printhead and return retaining bar to lock position
- Replace cartridges
- Close access cover
- Reconnect printer to power cord. (at least 1 minute should have elapsed since step 4.)
- Turn printer on
- Navigate to setup menu and print a nozzle test page. If all ok continue. If still blank then try the above again or call canon support or just give up on this printer.
- If test page is showing some or all test bars then the memory problem has been solved.
- Reconnect USB cable if used.
Note that steps 5-7 are not always necessary but it does force the printer to go through additional boot-up sequence and seems to be neccessary sometimes.
12-31-2020 11:45 AM - edited 12-31-2020 11:50 AM
Same exact issue! Tried the cartridge removal/turnon/off/printpage solution and amazingly, it worked! Thank you for sharing this. As I've had many problems with my Canon MX922, I plan on using your forum in the future. Thanks again!
01-01-2021 04:54 PM
only to report that a week or so after this fix, the printer finally died. Wife was trying to print something for our son (remote learning crap) and the printer came on, as it usually did; then just died. nothing we did could bring it back from this. it simply wouldn't turn on.
kid has a nack for taking things apart, and being as printers are so cheap these days, we gave this one to him for a good 2-3 days worth of disassembling electronics to see what makes them tick, and then discarded it all.
as many issues as this one seemed to have towards the end, at work I have had even more issues with brother and hp ones. and from personal experience I would also NOT touch another hp unless it was gifted to me.
so, bought another canon. a TR8500 this time. doesn't use the same cratridges as this pixma did, but still has the separate cartridges and is a multifunction piece. so far so good, makes some strange noises on startup, but seems a solid unit. time will tell, I'm glad I found this forum and will post any updates I can as we give this one some good runs.
01-05-2021 04:24 AM
Yes, I agree Boca Boy. I finally realized some years ago that HP, Epson, etc. are not in the business of selling printers. They are in the "ink business". Sell printers for cost and make large profits selling ink.