How can I get my printer to print in color rather than brown?

SOURCE: prints black on test page, but not when a job is sent to the printer

I just posted and also fixed my problem. Try "deep cleaning" under the maintenance tab. Choose the black cartridge only. Mine only took once to fix but i'd try it 1-3 times before giving up on this solution. It now prints the test page with black and color

SOURCE: Color images printing in stripes

yes clean your ink well manually

here is the service manual for your printer

http://www.nodevice.com/manual/newmans/1164257699mp750780smpdf/get13922.html

it has trouble shooting and step by step repair instructions

SOURCE: Problem with colors in Canon i850

OK this is the tricky part. You will have to take your printhead out of the machine (the peice of plastic the cartridges sit in). It just has a single arm holding it in and nothing else. There a few things you can try I will list them in order of safest to least safe.

1. Leave the cartridges in the head (even if you have to hold them in with your hand) and use a thin head on a decent vacuum cleaner (preferably one that can handle wet and dry so you don't get ink everywhere) on the bottom of the head where the ink comes out. You may be able to suck the ink through effectively removing any blockages.

2. You can leave it to soak in Isopropyl alcohol or windex or really hot water (not boiling) and it may remove any blockages. You must make sure that it is completely dry before reinstalling it though or you will wreck the head.

3. Using a jeweller's ring cleaner sit your printhead in an inch of water and activate it for 60 seconds (This can also damage your printhead).

You can get an idea how successful you have been each time by dabbing the bottom (where the ink comes out) onto paper towel or a tissue. You should see 4 lines, black, cyan (blue), magenta (red) and yellow.

If all of this fails you may need a new printhead which is dearer then a new machine.

Good Luck.
Please rate my advice, good or bad.

SOURCE: canon pixma ip500 horizontal bands of non-printing areas

Hi it's Gill again. I've been looking around more on the net and I think the problem is our printers need new printheads which I'm told are spare parts easy to change. Hope this helps. Gill

SOURCE: Canon Pixma MP630 not printing all colours

Colour not printing. Check vent hole on cartridge not blocked by glue or bit of the orange tape, cleared mine with knife now works fine