Black is malfunctioning. Have attempted to clean black jets multiple times, appears the print head is clogged. Any suggestions for cleaning or methods/instructions to replace, and possibly a source for the printer head?
BEEN DOWN THIS ROAD MYSELF WITH MY MFC 420. I MYSELF HAD THE BLACK, THEN THE CYAN, THEN THE MAGENTA, THEN THE YELLOW ALL STOP WORKING WITH MY 420'S. EACH TIME I'D CONTACT BROTHER, FIRST TIME THEY SENT MY OUT A NEW 420, THEN THE REMAINING TIMES I WOULD RECEIVE A 'REFURBISHED' UNIT.. THE LAST TIME I RECEIVED A REFURB UNIT ON 2/14/06, THAT ONE LASTED TILL 2/26/06. 12 WHOLE DAYS.. OH JOY.. TOO BAD THESE UNITS CAN'T BE TRUSTED, I LIKE THE MFC BUT, I'M GLAD I HAVE A CANON AS A BACK UP.
LET ME KNOW HOW YOU MADE OUT PLEASE. ANYONE ELSE HAVE ANY PROBLEMS WITH THE COLORS JUST 'STOP WORKING'??
There are enough posts of ink/printer head problems that surely Brother can hear the chorus of complaints. I don't believe that this has to do with remanufactured inks. It has to do with the poor design and poor quality of the printhead itself. Unfortunately, the cost of repair is very high with respect to price, so most people just buy a new printer.
I think we are being milked! (or inked) A couple of cartridge changes equals the price of the printer ..... but I digress.
Does anyone know how to remove and clean the MFC420CN cartridge head?
to remove the head and clean would require a near dis assembly of printer.
in short, open the lid as if to replace ink, unclip the bottom of the lid leg and swing open.leave ink in.
remove 4 screws and remove plastic clips to wires. disconnect wires there are 4 or 5 in total. now carefully unhook the lid from main unit, take your time.
after separating 2 parts.
unclip plastic cover on head, remove print head cable wire from head, unclip silver clip that hold ink hoses, undo top (in relation to head) slide bar, carefully remove head.. lift from no bar side first.
soak under very warm water for a few minutes and get old ink out of the clear chambers. keep going, enough?? do it again! now... reassemble.
if you removed the ink tanks.. you now have a mess on the bottom of your printer, clean that before re assembley. reverse all the above and the clock will have passed at least 1 hour if not 1.5 hours.
I'am not sure if bulk ink is the cause of clogging, there maybe some design failure of sorts since ink has to be drawn upwards, if there is a gap or leak.. air gets in?? i don't know but i've taken it apart more than once.
Had the same problem - the quality checks would only print all the black lines, the colours were shot. Especially the Magenta which was totally gone.
I opened up the printer and noticed that where the print head parks, there is a little roller that was filthy. I believe this is what cleans the head. It must also suction the ink, because there are tubes that lead to an ink trap - which by the way was totally saturated ( It's like a big sponge the holds overflow ink). Ofcourse you can see that ink was splattered all over from this cleaning roller.
So anyway - I thought by cleaning the roller and ink trap my problems would be solved. Put it back together and still doesn't work. WHAT A PIECE OF CRAP !
I didn't know how to take out the print head, but will try that and see what happens. I've owned other printers - Canon and HP - and have NEVER had so much trouble. I HATE THIS THING. Trust me - if it doesn't work I'm gonna take a hammer to it.
Thanks god I have back up (HP, Canon & Minolta) printers beside Brother MFC 420CN. I replaced its black ink cartridge only 4 times in 13 months. Then, its print began to fade and finally no print at all. Brother's service agent stocked plenty of print head but charged $80+ tax for replacement. This printer cost less than $80 when it is on sale. It is also hard to load envelope or post card for printing.
I would not buy Brother printer again. My first HP Deskjet printer worked 8 years all by itself. My (a lot less usage than my HP) Canon multipass C3500 is also a back up for 8 years and still working.
Harold, next time you clean your printhead, please take some pictures and send me to me. I'd be happy to post them up for everyone. I have to do this since two of the inks have quit (black and red). Thanks!
I bought my 420cn about 8 months ago. I use it alot and just starting to have the same problem. I thought it might be the refilling of the ink myself. Tonight I went out and spent $55 on new ink cartrages.I bought all of them allthough it was just the black not printing. On the new black I only got one page printed before it said it was out of ink. I checked and it was mt. It seems to be draining somewhere. I ended up refilling it and so far so good. Any ideas on why the new on only lasted one page?
Thanks for your input. I am also having these same problems with my Brother MFC 420cn.
I have the unit separated into two pieces and I have the plastic cover off but I can't figure out how to "remove print head cable wire from head". Is that the white ribbon that plugs into the head? If so, how does it come off the head? I don't want to break anything but I just can't see how to unplug that ribbon from the head?
I'm having the same problem. Please send pictures to my business email (bdazzleddesigns@hotmail.com) and I will be happy to post them up for everybody. Thanks!
Believe it or not, I don’t have a digital camera… sorry.
I did figure out how to unplug that white ribbon from the head though. You have to carefully take the plastic cover off the head itself. Then remove the little green circuit board in there. Now you can see where to unplug that white ribbon!
Not bad, Nice pics but only one problem. IT'S NOT IN ENGLISH!! With the pics and the instructions from the post above I managed to get it apart and back together. but sadly I must have screwed somthing up, I think I might have moved the little white adjustment knob on the side of the print head. now it will not print at all and I get an LCD message "Unable to Print". any ideas on a fix? Or is it thash now? I hat this thing LOL.
I'm trying to get the heads off, but cannot seem to figure out how it comes off the rail. It looks like if looking from the rear of the printer it docks on the left and to soak the heads, I just need to slide it past the left hand stop and off the rail after disconnecting the belt and ribbon cable. How do you get it off the rail? I'm being very gentle since this thing is made of unforgiving plastic.
Looking at it further, it appears if you pop off the black plastic top of the print head assembly, you could then unplug the ribbon cable and lift it out? If this is so, how do you get the top off. I see little plastic tags that look like they might release the top, but when I compress them, the cover does not move. Is there a trick? I'm scared of breaking them.
OK I check and reseated all wire/cable conections, I even reseated the PC board on the prinder head, ( noticed that there is a thin plastic strip that goes inside what looks to be a sensor on the board and made sure in was inside the slot. but no results, when you close the cover it cycles the head a few times back and forth and the beeps when it is done with an unable to print error message.
have a look at the little pad (1cm x 3cm)at left handside (when the control panel is in front of you) where the printhead wipes over to clean. I've noticed when it is full of ink or is not correctly adjusted the error message will show up.
Try to fix it by cleaning under hot water and let it dry (use handgloves :()
Another fix is to reconnect the flat cable in the middle of the board. It is only stuck on the board in a very simple way. Maybe you have turned it the wrong way or it is still not connected the right way.
I have my entire 420CN apart but I cannot remove the printheads. I have the cover removed and the circuit board removed but there is no visible way to remove the print heads for cleaning. Please advise!
Re: Re: Brother MFC 420CN Print Heads by Mr. Ace (5/23/07 3:03 PM) reply
If you are not lucky with that procedure, which I doubt, you'll be better off by buying a 2nd hand dcp 110c at ebay, take it apart and replace the printerunit of your 420cn. Should be cheaper and saver than trying to repair the printhead. Please note, all printerdevices (engines) of Brother using the same cartridges are made the same ;-) and can be replaced very easily (fixed by one screw only: Position on the upper left side between the metal of the printerengine. Cableplugs are colored and flat cable are of differend sizes; You can't do wrong.
You will definitely fail if you are going to use high percentage Isopropyl. Actually if you use 70% isopropyl it will work a lot better since 30% of it is water and the ink is water soluble. Following that line of reasoning, 100% water works a lot better and it's free.
I tried disassembling my dcp-115 prior to seeing this page. I discontinued doing so, scared I might screw up, so I put it back again. Everything's ok except Black print has ghosts. I think I disaligned something.
1 Press Ink. 2 Press Up or down-arrow-key to select Test Print. Press Set. 3 Press Up/down-arrow-key to select Alignment. Press Set. 4 Press Black Start or Color Start. The DCP begins printing the Alignment Check Sheet. The LCD shows: IS ALLIGNMENT OK? YES/NO 5 Check the 600 dpi and 1200 dpi test prints to see if Number 5 most closely matches Number 0. If the Number 5 sample of both the 600 dpi and 1200 dpi are the best matches, press (Yes) to finish the Alignment Check and go to Step 8. —OR— If another test print number is a better match for either 600 dpi or 1200 dpi, press (No) to select it. 6 For 600 dpi, press Up/down-arrow-key to select the number of the test print that most closely matches the Number 0 sample (1-8). Press Set. 7 For 1200 dpi, press Up/down-arrow-key to select the number of the test print that most closely matches the Number 0 sample (1-8). Press Set. 8 Press Stop/Exit.
it is not easy to remove the printhead. take a picture or something so no problem putting it back.
there are 2 rails where the printhead mounted to - 1 in the center and 1 closer to the edge. need to remove the rail closer to the edge. - find the 2 little metal latch locking the, use small piler to straighten the latch which goes thru the 2 the holes on the rail. the latches should now line up with the holes - gently life up slight (~ half inch up) the left side (side with hole closer to the edge) - the printhead should move a little - gently slid and pull the rail out of the black plastic slot on the other end. rail should should be sliding off from the printhead slot as well. - it might be easier to remove the rubber belt carrying printehead by pulling the belt up from the side pulley. it can be put back easily. - printhead should be attached to the center rail. just look at it from the side and lift the printhead up.
However, removing and cleaning printhead by soaking in warm water many time did not help fixing the problem of NO BLACK.
I am about the give up but really hate to create another piece of mostly non-recyclable machine, printer manufacturers have been doing a great job in creating waste for the earth . how can it be cheaper to buy a new printer than a ink cartridge !
I am looking for way to open the ink container and find out if there is anyway clogged. Any suggestion would be appreciated.
Sorry. No way to clean the printhead of the LC900/41 cart series. It might be that the ph has dryed out or pigmented ink has clogged the micro filter infront of the nozzels inside the ph or a valve wont move anymore. Dont waist your time and money! The ph has to be replaced!
What would happen if I replaced ink with a combination of window cleaner and low portion of ammonia in all cartridges and ran the cleaner option a number of times ????
John
Re: Brother MFC 420CN Print Heads by TOM BALL (1/27/08 4:02 PM) reply
alot of head cleaners contain either NH4OH ammonium hydroxide and alcohol, mostly isopropyl alcohol. I have read about either the black or cyan or yellow or magenta not working and people think the print head is clogged.. that may be, but don't be surprised if you ended up with an air gap in your hoses.. one way to try and clear this up is to force ink thru the bottom part of the cartridge holder via a syringe.. try the windex or the isopropyl, either one is ok, but i'd also try a and force the liquid thru the lines to clear a possible air gap.. well that's my 2¢ worth.. good luck
Does anyone know why my multi-function printer has no power? Just all of a sudden one day, no power. Can't find anything on it except people suggesting it's not plugged in, but we've checked everything and it's just not getting power.
Was it plugged into a surge supressor? You might have just blown the power supply - theres a fuse in it. You'll have to rip it apart to check this i'm afraid.
Its NOT the power supply. Its a defective part within the main circuit board. This happens quite often to mfcs older than 2.5 years due to cheap materials.
In case your mfc is dead: You need a complete new main circuit board!
I'M KIND OF PARTIAL TO THE CANON MP SERIES, DOES ALL THE STUFF AS MY BROTHER MFC 420 BUT A HECK OF ALOT MORE RELIABLE..THE INK CARTS ARE INDIVIDUAL TYPE, BUT MOUNT RIGHT IN THE PRINT HEAD, SO YOU DON'T HAVE THE PROBLEM OF AIR GETTING IN THE CART LINE FEED. WELL THAT'S ME 2¢ WORTH..
Quill.com is selling the Brother inkjet cartridges for a good price.
Please click on: http://www.bigcrumbs.com/crumbs/frontpage.jsp?r=mrw650 and then select Quill.com from the shopping menu. If you sign up with Big Crumbs and you shop online (eBay, Walmart.com etc.) you get money back.
Guys, I am having the same problem with Magenta. I could clear the "Almost Empty" error message by blowing air using a syringe thru the ink tank base (the white plastic tube) - you blow in, hold and realese and the ink will come out... it cleared the message but it is still not printing. What I really like about this printer is the networking capability. Does Canon MP Series have this feature? I looked for some printer sharing devices and they're pretty expensive and this was basically what made me buy the MFC 420CN.
Actually the "Almost empty" message is a reminder to buy a new cart. You should always print until the mfc stopps printing and the message "empty" appears. Even if there is a page within the mfc and the mfc stopps, after replacing the cart, the print will continue and finish.
The mfc/dcp machines work with a drop counter: When a new cart is placed in the display asks if you have changed the cart. By pressing 1 for yes the counter will be reseted. The ink indicator will display as full.
When chaning the cart before "empty" message appears you will waist ink and irritate the mfc logic, because the machine thinks that the old cart still is in use (and therefor the "almost empty" message wont disappear!)
By useing third party carts you might have trouble due to wrong ink mixtures. There is no glycerol (glycerin alc) within the ink!
The glycerol prevents the head from clogging! Original brother ink contains about 1/3 of glycerol 1/3 of DYE-ink 1/3 of destil. water with some cleaning fluids!
Running a mfc 420 etc. the best and cheapest way to print is to mix the ink by yourself and refill the original brother carts!
For C/Y/M use 3ml Glycerol, 5ml DYE-ink and 2ml destil water. with some drops (1ml) of printhead cleaning solution.
Drill a hole into the "brother" brandname on top of the cart and refill by help of a syringe.
You wont need any manual cleaning procedures anymore!
If you have a lack of one (0r more) color do the following: make sure all carts are full, placed well and are secured. Do insert a new ORIGINAL BROTHER CART for the one that shows no color.
press menu then start bk-copy then fourtimes arrow up quick after another. machine will switch into maintenance mode and all lights will flash. press 7 then 6 then 4 then start bk-copy. machine will initialize the carts and refresh ink within tubes and print head. After that it does some power cleaning. When finished press 7 then 6 then 3 then start bk-copy. machine will run a power purge. when finished press 9 then 9 to leave the maintenance mode. do run a quality test print.
If you re lucky the print head will work without complaints!
If not, the print head needs replacement due to malfunction because of bad ink (no glycerol and cleaning additives!)!
I forgot to mention that the "Almost Empty" message is appearing with a full cartdrige I had refilled - I've been using a Stratitec refilling kit for a while now with any problem at all. Also, with this kit you don't need to drill a hole on the cartdrige - just use the syringe to pump out air and insert ink on the bottom valvule - it works perfectly! Thanks, Anonymous for your feedback and also for your tip on how to put the MFC to be in maintainance mode.
Great instructions up until I disassemble unit and unclip silver clip that holds ink hoses. Now I'm stuck! can't identify with undo toP (in relation to head)or slide bar. What does the bar look like?
mine quit because of a lightning storm strike had to replace it with new never had problem wit bad printing untill i got a new one the older print heads worked better
Re: Brother MFC 420CN Print Heads by leonid (3/18/08 1:10 PM) reply
1. Take isopropil 91% 2. Inject it into a cartridge through a little whole you drill on the upper side 3. Print 30-40 pages of a full page rectangular colored black (if its black cartridge) It will clean it up without disassembling the unit
I've disassembled the MFC420CN and not able to get the darn print heads out for washing. During the disassembly my dear friend took out an ink cartridge and made a bloody mess. I reassemble the unit after cleaning only to find out the unit will not allow me to reset program. Brother suggest to have a cert-tech service unit. Is there a way to reset unit to factory settings, and allow programming.
I know for a fact that the ink problem does not have anything to do with the remanufactured ink. When my problem first started, I was using only Brother cartridges and believe me, I wasted several before going on the net to solve the problem of the printer not recognising a full ink cartridge.
i sucessfully removed and cleaned my printer head. it now prints in black but is not perfect, might be because i have to do some printing to get rid of the water and air inside. i am making a slideshow or video from the pictures i took. will post link soon
i uploaded a vid on youtube with my slideshow. link is here: http://www.youtube.com/watch?v=3DSZNhEj3o4 quality might be bad from conversion, i'll put a link to a pdf file at the youtube video
I am having the print head problem with the yellow ink. All the other colors work, but no yellow. Anyway, I took it apart and cleaned the print head, then re-assembled. Once together, I turned it on and the print head moved back and forth several times, then it stops and beeps, telling me there is a paper jam. If I hit OK to indicate that I have cleared the jam, the same thing happens...the print head moves back and forth several times, then gives the paper jam error again.
Any ideas what I have done wrong?
I also noticed when I disassembled it, that the print head was "locked" in the park position. I couldn't figure out how to un-park it, so I took off the outer metal rail to get the print head off. Now though, it doesn't seem to lock into the park position. Don't know if this is relevant or not...
I fixed the problem with the paper jam, but I'm not totally sure what I did. I turned on the printer and went into Maintenance Mode and the paper jam problem went away.
So anyway the yellow still didn't work once the paper jam was fixed. I took it apart again and soaked the print head in water for about 24 hours and re-assembled. Still no yellow. I'm thinking I need a new print head. Does anybody know where I can get one?
It took quite a while to figure out how to get the print head out.
After a cleaning the head in a sink with warm water, I tried to get the print head back in.
It took a few tries to get it in properly - and to have it all the way down on the track....
and again to get the small white plastic piece sticking out from the top right part of the rail - it needs to be to the right of the print head so the printer knows when the head is all the way to the right.
In the end - the printer keeps saying it can not clean I probably did not reassemble something correctly, but after 4 attempts at reassembly - it is going into the garbage.
Now the question is whether to buy another Brother MFC printer?
Unpuge ELECTRICAL CORDS CAN BE HAZARDOUS open the Scannner Cover by lifting from the right-hand side of the MFC/DCP untill it locks securely into the open position.Pull the Ink Print Heads near 1/2 right. Swing Freezer Bags in-under the Printer Heads.A popular "i*PRINT" SYRINGE/NEEDLE,waternot togo over the freezer Bags. mess warm water out thiw Syringe.Do it again! so no mess warm water under printer Heads that has not bin REMOVE :re:Brother MFC 420CN Print. paper tower off the freezer Bags and remove it.Look for water for a few minutes and clear chambers.!!!!!!!!!!!ELECTRICAL CORDS CAN BE HAZARDOUS.!!!!!! SO REVERSE ALL THE ABOVE AND BE GOOD!!!!!!!!!!!!!!!!!!!!!!!!
I tried alcohol in the cartridge, no luck but tried the procedure below from Anonymous and it worked great. Does anyone know where to get a full list of the maintenance mode functions?
From Anonymous on 2/18/08: "If you have a lack of one (0r more) color do the following: make sure all carts are full, placed well and are secured. Do insert a new ORIGINAL BROTHER CART for the one that shows no color.
press menu then start bk-copy then fourtimes arrow up quick after another. machine will switch into maintenance mode and all lights will flash. press 7 then 6 then 4 then start bk-copy. machine will initialize the carts and refresh ink within tubes and print head. After that it does some power cleaning. When finished press 7 then 6 then 3 then start bk-copy. machine will run a power purge. when finished press 9 then 9 to leave the maintenance mode. do run a quality test print.
If you re lucky the print head will work without complaints!
I know this is an old post, but can anyone explain this step in more detail, I've got the cove off the print head and I've got the ink hoses removed. I can't seem to get any further with this. Can anyone explain the follow step in more detail?
Old post: unclip plastic cover on head, remove print head cable wire from head, unclip silver clip that hold ink hoses, undo top (in relation to head) slide bar, carefully remove head.. lift from no bar side first.
I just gave up on this printer... Magenta has gone a long time ago and now Black decided to leave too... the family is complaining a lot! So I'm buying a HP C7280 which has scanner, Fax, wireless connection, USB, and is much faster than the MFC. My major concern would be HP's cartridge prices and/or the (not so easy as MFC is) way to refill them. I'll post the MFC for free at Craig's List to someone who just needs a Fax and Scanner to play with (or use it for parts).
Re: Re: Brother MFC 420CN Print Heads by me in GA (12/30/08 8:54 PM) reply
My DCP-115C stopped printing magenta and cyan. I took it to bits and found when you do the "clean" it seems to draw ink through non-return valves along the tubes. Whether or not it also draws ink down to the head is another matter.
Anyhow, lots of hot water and trying to clean everything out, I put some tissue paper on the head part and it only drew through the working colours, yellow and black. I tried isopropanol but little effect. Found a can of "safeclene" which is an aerosol non-alcohol cleaner, took the spray cap off it and the pipe left fits exactly into the non-return valves the printer uses to draw ink through. So covered up the ink inlets with my finger and squirted the cleaner in through the non-return valves and finally started to get cyan come through the head.
I think this method might de-clog the head itself but don't think soaking in water would do. I have started to get cyan back partially. Just a shame since I bought another 12 cartridges of ink thinking the ink might run out before the printer!
Couldn't bring it back to life, left the head soaking in isopropyl overnight and gave it another pressurised squirt through. Cyan only came through on a small section of the head. Re-installed and cleaned about 10 times but still only black and yellow working.
What's the code for a power purge from service mode (should have said I have a DCP-115 so no keypad)?
I couldn't strip the head down any further that I could see - it had been sealed together with melted plastic lugs. I suppose trying to get that apart and cleaned then repaired with glue would be better than it cluttering up the tip.
I took my mfc 420cn all apart and cleaned the head. It is a lot easier when you realize the 4 what look like sprokets in the holes move up and down and the colors that looks like they will not wash out are plungers.
Anyway, I got it all back together correctly (?) and I am getting a paper jam error. It says to open back cover and remove paper. Not jammed and no paper in there to remove.
Anybody got any ideas what the problem is?
I did order a backup though. Staples has a reconditioned laser multifunction mfc-7420 on sale for $78.99.
God I hate inkjets. Nothing like my HP 6p. Been running without a problem for 10 years. Knock on wood.
hi i'm the person who made that youtube vid. after more than 1 year of no problems, my printer stopped printing color or black. i cleaned up the head nicely, made sure everything was back in place, but now i get the paper jam message. looked back inside and saw nothing wrong, all the rollers look clean. i tried the power surge but when i press 763 in maintenance, it says power__ge or something, and then whether or not i press black start after that, it says printer_error! and then goes back to the paper jam message :(
I gave up on it and ordered a mfc-7420 from staples which had it refurbished for $80 after rebate. It is a black and white laser. I hate inkjets. Now if I can get my color laser Minolta working.
hi it's me again, so i found out what the paper jam was. there was no paper jam, i just put both strands of the looped printer head cable inside the clip instead of only one strand, so it prevented the head from moving correctly and i think that's why it thought there was a paper jam. after i changed that, it worked again. but color is coming out but not black :( not going to try again. just going to do some black ink initializations through maintenance mode a few times and if it doesn't work i'll just print in color until i buy a replacement
dang it i did it 3 times and now my black ink is empty, it was half full, anyway in between eah time i tested it and no black came out and since the ink is being drained during cleaning, i guess it is the print head. i'm going to buy a new printer, maybe 1 where the head is easily accessed
Thanks to Anonymous's detailed instructions on YouTube, I was pretty easily able to access the print head. But I recommend that people do not try to clean the print-head because it is plastic-riveted to an ink supply chamber in such a way that you can't really access the print-head from the ink-supply side. Consequently, you can't flush the print-head like you normally would (on many printers) by pushing hot water from the ink supply side to the nozzle side using a wide-mouth syringe. I was not able to clean my head by flushing it from the nozzle side, and it's hard to imagine how anyone could. The plastic "rivets" are really more like melted-down posts that are part of the assembly, so I don't think it's possible to drill-out and replace the rivets like one might do for normal pop-rivets. You could drill them out, but then I don't know how you could reattach it.
Like others here, when I reassembled the MFC-420, I got a phantom paper-jam error message (even though the paper wasn't jammed). In my case I got the error message because I didn't properly orient the thin plastic strip that the print head glides along during its entire path from one end of the printer to the other. This thin plastic strip runs along side the toothed belt, through a small notch under the print-head-assembly, and the strip is suspended from tabs on either side of the printer. It looks like a useless piece of long, thin plastic strip with holes on either end, but it must be some kind of magnetic or laser readable tape which needs to be threaded and suspended in the right direction. If you suspend it backwards or maybe upside down, you'll get an error message and the printer will make weird sounds. I don't believe that this is covered in the YouTube video.
FYI, the problem on my printer was that the red and yellow on my MFC-420CN stopped working, but the black and blue continued to work. That didn't change after I tried cleaning the print heads. Massive waste of time.
I really dislike the design of the print-head and ink-feeder system. I like simple systems where the ink cartridges ride on top of a removable print head. The MFC-420 has a system of tubes and a pump. It seems unecessarily complicated, error prone, and it makes it almost impossible to clean the print head.
I can't believe that I finally got my blue colour to function properly after all these months. I followed the instructions below. My other colour were half full, but I did place a new blue colour cartridge in, which was not an orginal Brother, and it worked!!!!!! Actually ran the 76-4 combo twice before the 76-3. Please try this to anyone who is missing a colour. I searched for many hours and even thought I had tired this once before already...but not with a full cartridge.
Thank you, Thank you, Thank you.
I tried alcohol in the cartridge, no luck but tried the procedure below from Anonymous and it worked great. Does anyone know where to get a full list of the maintenance mode functions?
From Anonymous on 2/18/08: "If you have a lack of one (0r more) color do the following: make sure all carts are full, placed well and are secured. Do insert a new ORIGINAL BROTHER CART for the one that shows no color.
press menu then start bk-copy then fourtimes arrow up quick after another. machine will switch into maintenance mode and all lights will flash. press 7 then 6 then 4 then start bk-copy. machine will initialize the carts and refresh ink within tubes and print head. After that it does some power cleaning. When finished press 7 then 6 then 3 then start bk-copy. machine will run a power purge. when finished press 9 then 9 to leave the maintenance mode. do run a quality test print.
If you re lucky the print head will work without complaints!
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