Problem computer does not recognize scanner- alarm light is on....  screen on printer says does not recognize black ink tank.....has also been telling me there is more than one of the same inks installed

here's what you can do:-disconnect the printer from the computer-turn off the printer-inspect for anything foreign inside like jammed paper-turn the power back on-remove the ink cartridge-check the chip connnector at ink tank and at head carriage. If its dirty clean it with soft moist cloth. -check the status monitor. which ink tank not recognized. -press ink light (1-4 times) depends on number ink tank not recognized, press 1 time again, carriage will move co replacement position, unplug and plug again all ink tank, press ink light 1 more.
if that doesn't work, replace ink cartridge ONLY if you have a spare. DO NOT BUY new ink as the printer is bound for repair.

http://damnprinter.com/226/canon-service-call-errors.html
http://www.fixyourownprinter.com/forums/inkjet/26091
You need to clean your waste ink i think. For troubleshooting purposes, please perform the following:
1. Open the printer and remove all ink tanks.
2. Insert a single ink tank in the printer then close the cover.
3. Confirm whether the printer recognizes the installed tank
properly. If it does, it will indicate it does not detect the other ink tanks, as
they are not currently installed in the printer.
4. Repeat steps 1-3 with another ink tank.
5. If the printer at any time indicates two of the same ink tanks are
installed, the cause will be the last tank installed. For example, if
you inserted an ink tank earlier, and you later inserted another ink
tank, and it said two of the same inks were installed, the cause of
the issue is the last ink tank.

How to use the scanner with a black ink cartridge install and no color ink cartridge install, plus the alarm light is on

hi,
CANON PIXMA MP160 All-In-One InkJet Printer has few common problems. Such as Driver CD lost, Scanner does not work, Connection problem etc. For find all these software solution just click here....


http://www.canon.com/printer/prob676ijt65/solution

prito-i-7

Ok my printer is giving me the U140 message saying that ink tank cannot be recognized. The new ink tank is Cannon (not a off brand or refill). i think it is a problem with the chip reader port inside the printer not the ink tank chip. I feel this way because if you switch around the yellow and black 8 tanks, the printer accepts them without error.. soo if it was the ink cartridge i could be able to swap the black with the magenta and it should read it.

I am having a problem with my epson FOTO R230 printer.It is telling me that
Parts inside your printer are at the end of their service life. See your printer documentation.

I had the same problem. My mp630 is also only 4 months old. I replaced all colour ink cartrdiges(inc black), but was only able to release the function for detecting the ink levels for magenta and cyan. Yellow and black then started giving error message U043, with them alternating between working, but never working at the same time. Getting them all clicked in with the lights glowing red does not solve the problem, as once the printer cover is closed, the same error message turns up. The only thing that worked for me is moving the chip slightly out of alignment, by pushing the sliding chip holder, and I only had to do this twice before they all started working and the printer was unlocked.

you have to change the ink cartridges

I did not have this problem until after I moved, even though I was extremely careful and moved my MX700 in its original box in my car. The problem seems to be related to the small black tray that the ink tanks sit in. The tray has all the electrical contacts on the back and if it gets loose, it may not make good contact with the ink tank carrier.

Try reseating the black tray where the ink tanks sit. After removing all ink tanks, lift up the gray lever to the left of the tanks. This releases the black tray that the tanks sit in. Remove the tray (not the whole ink carrier, just the smaller black piece inside the carrier towards the back), check to make sure the contacts on the back are clean, then reseat the tray, pressing it firmly, but not forcefully, into place. Push the gray lever back down to lock the tray in place and reinstall the ink tanks.

Nick, the Computer Guy

I have had this problem repeatedly lately. To try the Stop/Reset solution already mentioned, I turned on my infrequently used Canon Pixma MP830. Most of the time at a fresh startup it gives an alarm message "the following ink tank cannot be recognized" OR "there are two of the following ink tanks installed" ??! for the single black 8 cartridge !, a Canon original. Of course, tonight it started just fine, but the methods I have used when it does not work because of these alarms are the following:

I open the top, wait for the cartridge carrier to center, unsnap the black 8 cartridge, then snap it back in and close the top. This sometimes works if repeated until the machine recognizes it. Sometimes I unsnap all the cartridges and resnap them. If this doesn't work, I remove the black 8 entirely and use a clean cloth to wipe the electrical contacts of the cartridge in the direction of their length and reinstall. It sometimes takes a repeated combination of these steps and sometimes the two different alarm messages will appear alternately. There does not appear to be any logic to it. Once the machine does recognize it, it works just fine.

However, if the machine is turned off, many times when it is turned back on later I have to go through all this frustrating rigamarole again. I hope it is a glitch with this particular cartridge (fairly new) and not the machine. Next time I get the alarm messages I will definitely first try the Stop/Reset button solution suggestion, but I thought I'd add my two cents solution, which so far has eventually caused the machine to recognize the cartridge.