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have you replace the Transfer belt.??? It also has a transfer roller for yellow. (Called First Transfer) since it is transferring yellow off the drum. You have replaced the yellow image unit???? 2nd transfer is to the paper!!!
in the print out alone you can already know what print head is no working properly like missing color. if cleaning is not solving the issue this purging the print head. just read the user manual for the instruction
I'm assuming that the colour cartridge is a three in one. Blue, Yellow and Magenta.
When printing a colour document, the printer automatically balances colour mixtures from the three primary colours listed above. Should a print out be too red, its probably because its run out of yellow and/blue.
The best way to check is to print out a test page, you should get a block for each of the colours and black. If one's missing, there's your answer.
Hi there. The reason for your problem is that the colour cartridge contains cyan, magenta and yellow ink, plus a black cartridge of course. All the other myriad colours are produced by mixing these four basic colours. So, if you print red, it requires ink from both the magenta and yellow cartridges. Thus if your red produces a yellow print, it means your magenta is not printing. This can be due to a number of reasons, mainly an empty or faulty magenta cartridge or blocked magenta print nozzles.
If you wish me to help you with sorting out the lack of magenta, please post a new comment to this effect.
The colours in the 3 colour cartridges are cyan, magenta and yellow. If you want to print "red", this requires a mixture of magenta and yellow. Thus if only yellow is printed when you should be printing red, it means the magenta is not printing i.e. faulty/empty magenta cartridge or faulty/blocked magenta nozzles.
Please post a new comment if you wish for further help with this problem.
I found this post to work for me when yellow was not printing on my HP PSC750 after using 2 cartridges: "Well if you want to damage your printer use alcohol. But if you want to
make it work then pull the cartridge from the printer and run hot water
on a couple of paper towels leaving alot of hot water in the towels.
Put some thing under them to keep them from staining your counter top
and then set the cartridge down onto the hotwater towel and let the hot
water melt away the dry ink and in minutes you may be printing again if
this is what it is. Be sure and use a dry paper towel to wipe off the
ecess wet before you reinstall the cartridge."
This could one of a few fairly major problems.
The easiest way to track down the fault is start by replacing the consumables - make sure you install them in the correct positions - it is possible on the C1100 to put them in the wrong places!!
Change the toners first. Most importantly the magenta and yellow. Print several pages. Use MS Paint or similar to create a page with all four component colours on (cyan, magenta, yellow and black)in large blocks (see image below) and print them full page.
Now look at the print and see if any one colour is missing or has reduced density.
If you have a spare PCU you should but that in next.
Let me know what the print outs look like and we will progress to the next step.