Inkjet cartridge My Lexmark Z735 printer has suddenly stopped working showing the following error. unsupported cartridge.It has been printing fine up until now and has plenty of ink remaining. Randal

The cartridges compatible with this printer (at least within Europe) carry the code 18C0781 and are commonly know as the Lexmark 1 cartridge.

Please follow the steps below to identify what is causing the problem and fix the issue:

1. Make sure the printer is on.

2. Open the printer cover. The print cartridge carrier moves and stops at the loading position, unless the All-in-One is busy.

Note: If the carrier does not automatically move to the center, turn off the printer/unplug the printer from the power source and then slide the carrier to the center.

3. Remove both cartridges from the carrier.

4. Close the printer cover.

5. Re-brick your printer. Pull out the power supply, black box where the power cord is plugged in at the back of the printer, and put it back after 30 seconds.

6. When the printer turns on, reinsert one cartridge first.

7. Close the printer cover and check for any errors.

8. If no error appears, reinsert the other cartridge. Close the printer cover.

9. Replace whichever cartridge is causing the error to appear with a new cartridge. Then try to print a document again to verify that the problem is fixed.

Should you have a defective/faulty genuine Lexmark cartridge, please don't hesitate to contact Lexmark Technical Support Center for additional assistance.

Ink cartriges have chips in them, if the printer does so many prints without getting the "I've had a new Original Cart fitted" it will stop untill,you give it one, regardless if there ink or not

Im afraid it doesn't care that you only need to use the colour cartridge, it is designed to cost you money and make money for lexmark not refillers.

Welcome to our modern world, manufactures make the ink hard to recycle by incorperation of expensive chips that makes refillers, unable to make a easy dollar, because if that want to make cartridges that work they must also fit the expensive chip.

All empty cartridges have a little ink left in them because getting air in ink lines is not a thing we want.

Installing like this Lexmark are Plug in Play, Windows automatically detected such devices connected on it. If not then try to use another USB Connector to see which is the problem occur or might be your printer too...
Good luck!

Follow this link to Lexmark's website. There is an extensive list of cartridges available for this printer and you gave no indication as to what you needed. http://www.lexmark.com/lexmark/product/home/725/0,6970,204816596_653399455_483733205_en,00.html?tabId=7 Don

Follow the steps on how to correct the error from this Lexmark link:

http://support.lexmark.com/perl/support/support.cgi?ccs=229:1:0:487:0:0&docid=ENUS24096

copy and paste the complete link into your browser.
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.

Normal 0 Could have a corrupt driver.
Disconnect the printer or at least be sure it is turned off. I'd do both and when the CD software program asks you to connect the printer to the USB port, do so and it should again work properly.
Hope this helps. Bud

The same thing happened to me once. Try looking near the cartridges, there might be an item stuck which makes it hard to print. When that happened to me, i noticed that there was a pencil stuck in mine. I ended taking it all apart in the end, but that is only because someone forced it in there. In the end, it worked!

Hope you get your working soon! =]

Hi,

You can download here from Lexmark.

http://downloads.lexmark.com/cgi-perl/downloads.cgi?lxkprod=Lexmark+Z735+Color+Jetprinter

Just pick your operating system.

The manual should have picture instructions, follow them carefully. they usually slide in and a top plastic part pushes down to lock them or they just snap in.

please look at the manual one more time
#1 cart. should be this model 18C0781

here is a link that shows how to clean them

hope this helps