The timing strip drop off

Go in to your HP solutions center and click maintenance. Click on clean printer nozzles. If the printer was low for a while the nozzles may be clogged with dried up ink.

canon mp490 error 5200 solution...... turn off printer,then hold reset button(the red 1 circle with triangle in middle) for 5 sec then whilst holding reset button turn power on let go of reset button then push reset button twice whilst still having hold of power button then release power button then push reset button 4 times and then power button twice hope it works it did for me carlos:)

I got an amazing solution to this problem that worked for me.......my printer is working now :)
>.

just sharing with you............

"Someone tried for hours to reattach my encoder strip, and finally figured out the way to do it after reading many web postings, and my own trial and error. The key is to use a "dental mirror" that you can pick up at a pharmacy or hardware store for about $5. (Perhaps a small compact mirror may also work.) And you need to focus light back there. (I used a head lamp.) The problem is you just can not see the small slot through which the encoder strip must be threaded from the front of the printer. It sits in back of the ink cartridges. This thin slot "tunnel" goes though a rectangular piece of plastic. You can feel the rectangular piece of plastic in back of the ink cartridges, and looking with the dental mirror you can see how small the slots are on the right and left side, through which the encoder strip must be threaded. After "seeing" these small slots using the dental mirror, you then can feel them with the tip of a fingernail, and know exactly what you are aiming for as you then feed the encoder strip through. (It doesn't make any difference of you feed the strip from the left or the right, but the down arrow end of the encoder stip must end up on the right when you later attach it to the wire tab.) I fed the strip "blind" after I had formed a strong mental image of exacly what I was trying to do, and now being able to feel the small slot I was aiming for with the tip of a fingernail. (It is tough working in the small space in back of the ink cartridges, and if you have really big hands and fingers it may be impossible. I did not want to use forceps or tweezers because of a fear of damaging the encoder strip.) The encoder strip then must be attached with the down arrow end on the right attaching to a flimsy looking wire on the right side of the printer. The left end of the encoder strip must be attached to a metal tab on the left side of the printer. You will need to hold tension on the encoder strip, and manually push the sliding ink cartridge back and forth out of the way as you attatch both ends. (It's probably a good idea to gently clean the encoder stip of all your fingerprints and any smudged ink with a tissue after you get it back in place. Also be sure to clean the metal bar the ink cartridges slide back and forth on, so you don't get error message 0502.) Be prepared for this to be a very frustating experience! You will be maddened by how many times it will take to thread the encoder strip though the slot, how difficult it will be to catch the end of the encoder strip on the wire and metal tabs, and how you will have to figure out how to hold tension on the encoder strip so one end won't fall off as you attach the other end. But once you use the dental mirror to see where you have to thread the encoder strip, and once you see the wire and metal tabs to which the ends of the encoder strip must be attached, then YOU CAN DO IT! It just takes persistance."

If you refill you Ink Cartage on this Please make sure the Ink is primed. If you touch a paper towel to the bottom of the ink cartage and the tale stays dry It is the cartage.
If that is ok Make sure that the door and the contact(If you can see it) Is closed and in good shape

That is the ink guide. If the plastic strip connector (the slot cut on both sides) is not damaged/broken, the other metal tab may have fallen making the plastic strip to fall. It is usually soldered on the metal frame of your printer, find the missing tab and solder it back in. You should find a trace of the tab's original location.

do not know where you live how ever the coupler is not hard to replace. there are a couple of metal clips that hold the drain pump on remove this and then there will be two more clips that hold the motor on and pull this off to get to the coupler. i hope this pic helps it is not hard to don just takes a little time

IssueAn 0xc18xxxxx or 0xc19xxxxx ink system error code displays on the front panel. The printer cannot copy, receive faxes, or print. Solution
Press the On button to turn the printer off. 
Unplug the power cord from the back of the printer.
Remove all the ink cartridges.
Wait two minutes.
Plug the power cord into the back of the printer.
Press the On button to turn the printer on. 
Install the ink cartridges when prompted.
If the error code does not display, the issue is resolved.
If the 0xc18xxxxx or 0xc19xxxxx ink system error code displays on the front panel, service the printer.

I tried for hours to reattach my encoder strip, and finally figured out the way to do it after reading many web postings, and my own trial and error.
The key is to use a "dental mirror" that you can pick up at a pharmacy or hardware store for about $5. (Perhaps a small compact mirror may also work.) And you need to focus light back there. (I used a head lamp.)
The problem is you just can not see the small slot through which the encoder strip must be threaded from the front of the printer. It sits in back of the ink cartridges. This thin slot "tunnel" goes though a rectangular piece of plastic. You can feel the rectangular piece of plastic in back of the ink cartridges, and looking with the dental mirror you can see how small the slots are on the right and left side, through which the encoder strip must be threaded. After "seeing" these small slots using the dental mirror, you then can feel them with the tip of a fingernail, and know exactly what you are aiming for as you then feed the encoder strip through. (It doesn't make any difference of you feed the strip from the left or the right, but the down arrow end of the encoder stip must end up on the right when you later attach it to the wire tab.) I fed the strip "blind" after I had formed a strong mental image of exacly what I was trying to do, and now being able to feel the small slot I was aiming for with the tip of a fingernail. (It is tough working in the small space in back of the ink cartridges, and if you have really big hands and fingers it may be impossible. I did not want to use forceps or tweezers because of a fear of damaging the encoder strip.)
The encoder strip then must be attached with the down arrow end on the right attaching to a flimsy looking wire on the right side of the printer. The left end of the encoder strip must be attached to a metal tab on the left side of the printer. You will need to hold tension on the encoder strip, and manually push the sliding ink cartridge back and forth out of the way as you attatch both ends.
(It's probably a good idea to gently clean the encoder stip of all your fingerprints and any smudged ink with a tissue after you get it back in place. Also be sure to clean the metal bar the ink cartridges slide back and forth on, so you don't get error message 0502.)
Be prepared for this to be a very frustating experience!
You will be maddened by how many times it will take to thread the encoder strip though the slot, how difficult it will be to catch the end of the encoder strip on the wire and metal tabs, and how you will have to figure out how to hold tension on the encoder strip so one end won't fall off as you attach the other end.
But once you use the dental mirror to see where you have to thread the encoder strip, and once you see the wire and metal tabs to which the ends of the encoder strip must be attached, then YOU CAN DO IT! It just takes persistance.

There seems to be a problem with ur printer nozzle.......it seems to have broken or sumthin.......the only way u can repair it is by calling the service centre and gettin the piece repaired

Try opening the ink cartridge load slot. Look inside and see if the lego piece is there. If it is, try and pull it out with tweezers.

You could also try unplugging the printer and turning it upside down. DON'T SHAKE IT but the lego piece may fall out when you turn it over.

Other than that, there's not much you can do.