SOURCE: diagonal lines on print
Hi,
Follow these steps.
Print Quality Problems on 3010cn.
Reset the NVRAM On the 3010cn
To reset the NVRAM, perform the following steps:
appears, and then press the
(down arrow) button on the printer until Configure
(right arrow) button on the printer or 
(Set) button.
on the printer until Maintenance on the printer or .
until Init NVRAM appears, and then press or .Initializing and Restart Printer will appear. button. button. button. On the LCD, Processing appears and the test page is printed. button. button. button. The test print will print. button. button. The test print will print. button. button. The test print will print. button. button. The test print will print.
SOURCE: Screen reads "Near empty Cyan" but I just replaced the Cyan ink cartridge, its full.
If the firmware update doesn't work, you can reset this error.
Unplug unit. Remove offending cartridge. Plug unit back in, wait until
all startup noises have stopped. Open lid and reinstall cartridge. This
will solve the fault as long as the sensor is working.
Also, please be aware, you should not have to change a cartridge if it says "Near Empty", only if it says "Ink Empty Magenta".
Also, please make sure none of your other cartridges are empty. I have
seen this over and over. Two cartridges empty at the same time, and the
person replaces one of them but thinks they actually replaced the other
one.
Turn the power off and pull all the cartridges out. Look a the side of
the cartridge, you should see a window with a little plastic tab
sticking out. This tab should be blocked by a black float inside the
cartridge. If you cannot see the float, and the tab is clear with no
ink in it and no float tab blocking it, it means the cartridge is empty
even if you still see some ink in the bottom.
To be sure plug the machine in without any cartridges. When all the
noises have stopped, open the lid and install the cartridges. If you're
still getting an error saying either a cartridge is not installed or is
empty, then one of your cartridges is empty. Redo the previous
paragraph.
SOURCE: Black line across page when printing or copying
Did you try wiping clean the glass? also wipe the strip by the scanner glass?
SOURCE: Canon i960 printer won't print in blue
Your problem is the print head. You can buy one from Canon for about $95, or find them new from dealers on Ebay for $60 to $70. For a less expensive fix, try to remove the print head and clean it. (You don't need any tools, just remove the ink tanks and pull the print head forward and out. Over time, the receivers tend to get dry & crusted ink on them. Note that the inks used are fast drying inks to keep your pictures, etc. from smudging after you print them. Try not to use solvent. I use q-tips and hot water, then dry using another q-tip. If this does not work, there are commercial cleaning kits available for about $10. Short of that, your choice is to replace the print head or the printer itself. My i960 prints such good quality color prints and normal color printing, that I would fix it rather than replace the printer. I hope the easy cleaning does it for you!
SOURCE: Canon Pixma iP4600 not printing cyan
I had the same problem and I finally FIXED IT. I first tried replacing cartridges - no good, I then took the print head out, dismantled it and washed every component, no good. I then noticed that there were small streaks of blue on the paper when I tried to print a blue image so I worked out that the blue ink is getting through, but very slowly (yours might not be getting through at all but don?t worry this should still fix it). So I got a very thin pin and pushed it into the cyan pad on the print head creating a thin channel for the ink. Tried to print again, perfect, blue now working. Hope this helps - remember, you do this AT YOUR OWN RISK, there is no guarantee this will work for you, it worked for me but there is the obvious risks that you may break your printer. I did it because it was broken as far as I was concerned and I had nothing to lose if it broke completely, you must make that choice yoursel
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