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embguy,... I don't think I told him he had clogged nozzles. In fact, once he printed his test pattern similar to yours I told him the cross contamination was coming from the pads. For your case, you can clearly see what the problem is. Lets say you start out with cleaning the printhead...

@SpiderMan... I have never had the MP980 in my hands to repair so I have not created a manual for it. However I believe I have sufficient information and pictures to modify one of my other MP manuals to allow you to take it apart and get at what ever needs repair. It really depends on what...

melkin1,... It has been more than a year since you posted to this thread. I finished just about all of the Repair manuals since then. You should have finished the job when you had the covers off and cleaned out the waste ink pads and cleaned several other things, inlcuding the purge unit...

Emerald,... First,..Congratulations on a job well done. You have more guts than most of us. After looking several times, I am beginning to believe that the "Pharmacist" is on the correct track. If you now have totally cleaned the parking pads, I don't think you will see the problem again...

Emerald,... I think you are wrong. I don't see any result of cross contamination, especially since your yellow and Cyan are pure colors. If you had corss contamination, between any two colors, you would see the results in both. The banding you see is nothing more than some clogged nozzle in...

Darth,... It's beginning to sound like you have a problem with the Black section of your purge unit. There is a simple test you can do to prove, or disprove that your Black Purge unit has a problem. I have a document that explains how to do this test but it is just too long to post to this...

Emerald,... I guess we will never know the absolute answer. I, like many others, always blow dry the heads after I clean them, and I use about 80 PSI from my large compressor to do it. I also have to take care not to dislodge any of the pads around the filter screens. If anyone of those are...

OK,.. now it is time to bring out the heavy guns,... Being an Electrical Egineer at IBM, one of my early challenges was to design an 8 bit microprocessor. This was 6 years before Intel came out with their first 8 bit processor, the intel 8088. I received 5 patents on that design. Part of our...

leo8088,.... You are partially correct, but I did not want to go through all of the printer and list the details. Each Service Manual for a printer has a special section listing the "Cleaning Periods" for that model printer. Some models are the same and some are very different. The key is...

emerald,... Sorry for being so late in this response. My system crashed awhile back and I lost a lot of mail and I've been working on the recovery. I thought I had it all done but then I found a lot of email that I had never responded to. I'm glad to see you found the "Auto Power"...

ges74,... There is no problem shipping Ink refill kits, I think Mike uses the US Postal Service. Go to his web site, PrecisionColors.com and call him or send him and email and he can provide the answer. There is another site where I have purchased refill supplies, but I stopped supporting...

Zman,... Sorry for the long delay in getting back to you. I did not get a notification of your post. There are several possible problems that could cause this error to keep coming back. 1. Did you clean the contact inside of the Carriage ASM. Remember to only wipe them in a downward...

Statman,...and others,....I know that all those that use the German method insist that the needle they use does ABSOLUTLY NO DAMAGE TO THE BOTTOM SPONGE. There is also a different material more like a tiny felt pad at the exit port. For the needle to get past all of this and reach the...

Stratman,....I for one do not use, nor do I recommend the use, of the German Refill process. Being an Engineer, I understand the significance of the design that the Canon Engineers have created. The entire ink flow system, and each and every part in it, has been designed to be balanced. A...

Stratman,...The first thing I would do would be to remove all the ink carts and then the printhead and take the head to the laundry room sink and clean it. This is done by turning on the faucet to full force and medium hot water. Hold the head under the water and focus the stream at the...

Turbguy,... your post needs some more explanation. You can't be describing a Canon i960 printer as the Purge unit is held in place buy two screws that can only be removed from the rear of the printer once the main printer assembly has been removed from the base. In addition, It is not...

hagar,...I wish you had found some of my posts and contacted me first,...you could have avoided many of your problems. I have helped many people fix there problems with the purge unit and it is no where near as complex as the things you did (or broke). You've done so many things wrong I...

Emerald,...first I want to congratulate you on all your efforts. So far you have done the best that you can do. With all the cleaning I can't believe you did not have total success. However, I have more than 5 old heads that I was never able to clean. I suspect that the nozzles you are...

ZMan,... I would just add my 2 cents to the other comments. 80% of the time, just the action of unlocking and relocking the printhead will resolve the problem. This action releases and latches the printhead and this wipes the contacts in the carriage asm against the gold contacts on the back...

Emerald,... Since you have so many older Canon ink carts, I would suggest that you make yourself a set of cleaning ink carts and fill them with a little ink and hot water. Then run Deep cleaning cycles followed by nozzle check until you get rid of all of the banding. If you are successful in...