colshubasked Jun 1, 2009 at 8:19am
Canon MP600 died
Opened Power supply seems OK. Outputs Blk & Blu = 0v common
Wh & Brn = 10.5v Red = 7.5v Yel = -11v.
Note: the power supply has black tabs the you push away from the grey power supply case. One tab in front and one in back. The grey power supply box pulls right out of the printer. The internal connector (six colored wires) pulls straight out (there is no release tab/catch). Use small screwdriver or needle nose plyers to carefully remove. Pull/pry the female white nylon connector. Do not pull on the wires.
Would you have a copy of the service manual, or any guide to disassembly for the MP600?
I would appreciate it if you could let me have it.
Also,.. the post by neo888 is very correct. The real problem is you need to verify that the power is bad before you replace it.
Hello all - I now have TWO dead MP600's! So the first was given to me by a friend that told me that a "bad printhead" error had occurred with it and their conversation with Canon divulged that there were no longer any printheads available for that model MP600. So after they bought a replacement printer, I accepted their tossed printer and because I had the same model I was thinking that perhaps all it might be a clogged printhead not being recognized. Man, was I wrong..
Steps to failure:
* Powered-up printer to discover error message and proceeded to powered it off.
* Removed and cleaned printhead contacts with rubbing alcohol.
* Replaced printhead and proceeded to power it back on - no power.
* Scoured internet for troubleshoot.
* Did the whole 'hard reset' thing - nada.
* Worried that it might be the AC adapter unit - it wasn't.
* Replaced KNOWN working printhead in *MY* MP600 with now cleaned unit and??
Now I have two MP600's that don't power up. At all.
So what did I learn from this besides the obvious? First, when an MP600 fails to power on at all, there is now a distinct possibility that it is not the power adapter. Second, never believe simply cleaning a printhead will solve the problem of a Canon printhead error message telling you that you have a "printhead error" - it does not solve it. Third, apparently a defective printhead will completely shut down a Canon printer at some point in time, and from what I can glean it appears that it shuts it down through the logic board.
Great engineering, Canon. thanks...
What I'm wondering is this: Does the logic board A) have [repairable] hardware circuit protection? Diodes? or is it all software driven and if it is, then, B) can the logic board be re-flashed by some facility to original specification. That'd be awesome, but not holding my breath that if so it'd be stateside.
In conclusion, after spending hours upon hours of my life on-line reviewing this problem of dead Canon Pixma printers, I'm wondering if Canon should be held responsible for this as a defect. I mean, seriously, there are a LOT of people out there that have dead PIXMA's out there for no apparent reason (at least I know what I did wrong). :-\\
Okay, so any thoughts on possible repairs? Any at all?? Or how about thoughts on Canon being held accountable to some degree. I sincerely think this has more to do with a general engineering problem that involves poorly-written software code responding to incidental day-to-day environmental effects, like, printing documents and suddenly the printer dies for no apparent reason, for example. For whatever reason, there are lots and lots of those out there.
It has long been reported on this web site and several others that the worst thing you can do is put a "probably Bad" printhead from one printer into another printer,... especially after you have seen that head "KILL" the printer to the point where it won't even power on.
The failure mechanism is as follows; The printhead is used when it is low on ink or one ink has totally gone dry and the owner continues to try and print large documents or photos. This overheats the printhead and can cause one or more nozzles to burn out. Sometimes the burn is so bad that it "Short circuits" the head and large current flows. The engineers new about this problem so the built into the logic board and the head an "Over Current" protection sensor. This sensor shuts down the system and "Won't allow" the unit to power on. They do this to protect everything they can sinc they know if they have such a short and the next person tries to power the unit on it could melt the entire printer. People that have had this problem think it is only the AC adapter and buy a new one,..but that won't work either. The AC adapter will still deliver enough low voltage to energize the logic and the logic sees the short and will not allow the power to come on.
One thing to do to test if this is a permanent short is to pull out the printhead and unplug the power for 5 minutes,..then without the head plug the power back and try and turn it on. If it comes on you are lucky,..if not,..you've learned a lesson.
My MP600 died, i already pull out the power supply and test with the multimeter but i don't know if i do right.
I use the cd3ka method:
Blk & Blu = 0v common
Wh & Brn = 0v
Wh & Red = 0v
Wh & Yel = 0v
So, if i do right the power supply is dead?
I suggest that Canon could have routed their circuit protection differently rather than making the entire logic board (and subsequently making the printer) now completely useless - it wouldn't have been hard to do. A simple 'reset' button is the first thing that comes to mind.
that would defeat the purpose of protection. printheads go out, via defect or usage. you can always repair/replace, there's no getting around it. you seem to want a magic solution that doesn't exist.
the only thing you can do to avoid this type of surprise, is do online research BEFORE you buy. It really isn't that unusual for consumer inkjet printers. they're not designed for longevity.
My pins are like below:
Blk & Blu = 0v common
Wh & Brn = 0v
Wh & Red = 0v
Wh & Yel = 0v
Read this thread with interest. The comments you made about the print head I can relate to.
Ive had my MP600 since 2007 (cost about £200) and had no problems although wasn't heavily used, its been a fantastic printer.
Last week I had to a 10 Page doc urgently, my black ink was completely dry and showed a warning that if I continue, this can cause damage to the printer. I have to say although this has happened before.I clicked ok and carried on. Anyhow I tried power on today and guess what?? Nothing!
Whether this is poor workmanship and shouldn't behave like this I was given the warning, ignored it and now gutted.
Im assuming this has caused a complete failure of the printer, but just want to check is this fixable in any way, replacing or board or...
Your advise is appreciated.
This is a very interesting thread. Of course, I'm here because my MP600 has died too.
I have unplugged the AC adapter, and I have obtained these measures (volts) whith a voltmeter:
Black & Red: 7,56
Black & Brown: 9,98
Black & White: 9,98
Black & Blue: 0
Black & Yellow: 0
Does somebody have any idea of what's going wrong? Thanks.
If someone could unplugged one AC adapter (K30271) functioning correctly, and obtain measures in this case, we would solve this doubt: if these measures were the same as my measures, the AC adapter wouldn't be the problem.
My printer dead also, power doesn't come back on and the printhead is still stuck in the right hand side position? Do you know how I can get it into a position to remove it??
Removed power supply and tested (with it plugged in...) - same results as others;
Black & Red: 7,5v
Black & Brown: 9,9v
Black & White: 9,9v
Black & Blue: 0v
Black & Yellow: 0v
So, is this a knackered PSU or one in standby. I have no response when I try to turn the printer on. Never had an error code.
Pursue or (reluctantly) bin?
Hope it helps.
I tried cleaning heads and all the built in utilities available.
I have tried to update the driver, reinstall the driver and still have the same issue.
My pc is running XP, so I tried to print from my laptop running Windows 8 and got the same bad results.
Anyone have any thoughts?
If you want to follow up on you questions I will send each of you a short email and when you reply to it mention your printer and some description of the problem and you could also attach a copy of your last nozzle test image. I will respond. If you need to contact me directly just click on my USER ID and then enter the info in the email you send to me.
From reading this thread I am wondering if this is a symptom of the print head burning out?
We have a newer Canon, an MG5460 - such a disappointment compared to the MP600: so slow to start up and chews through the ink compared to the trusty MP600. So I'm keen to get the MP600 working again if it's cost-effective to do so.
Any suggestions appreciated.
hey guys I found this on the net check it out maybe somebody can make something out of it cuase they omitted this part on the service manual that I attained cause I have the same problem hope this helps.
i think I finally found out what was causing the print error messages on my printer. At first I thought it was the usb cable because the printer starts to print with out any problem and I noticed when the print jobs were light documents it completed the print cycle. When I tried to print photos that's when the errors show up. I had a very long usb cable connected to the printer about 7 meters long. Don't get me wrong I had to do this since the printer was located in the other room. While printing I noticed on the print queue I think it was right on the windows bar, it said communication error instantly , then the error appeared on the queue. This gave me the idea that the data was not being sent to the printer smoothly and that the printer and the computer was having communication problems. This gave me the idea to shorten the cable, So I moved the printer next to the computer and used a 1 meter cable at first the printer was printing smoothly, printing a photo letter size no communication errors being indicated. Half way to the print the printer suddenly stops and no power. I heard something "tick" once before the power went shut. I thought I was a fuse blown as it sounded similar. When I opened the psu of the printer instantly I noticed a blown capacitor and it was very obvious cause it was really buldging. So maybe it was the cable or could be a dying capacitor that was causing the problem not supplying enough current to the printer. This might give a clue to others as well. I will try to replace the blown capacitor because when I tested it, it was just giving no reading at all. An open one. Nothing to do now but try sounds crazy but might be the reason why he printer was giving communication errors while printing and btw since the spooler is set to restart the printing when error occurs that's the time the printing error happens. Thanks everyone.