Light Magenta and Magenta does not print on Test Page

This is almost certainly caused by air locks.
I had the misfortune of having to resolve a friends C8180 failing to print Light Magenta and Magenta. No error codes were coming up and other than failing to print he 2 colours it worked fine. I managed to fix the problem by purging the lines -- here's how...
1. Remove the right hand panel (about 3 screws) then on the top prise the grey clip and drop the right hand panel down and off.
2. Repeat for the left hand panel.
3. On the right release the 2 ribbon cables and wired connections for the scanner.
4. Release the scanner bed by pressing the black hinges and pulling the scanner body away taking care to ease the cables out.
5. Remove the top plastic cover of the print bed. You can now see all the print carriage and ink line assemblies.
6. On the right on top of the print head assembly there's a small black cover, remove this too so that you can see the ink heads.

Now on the left you'll see the priming pump - rotate this manually by hand and watch the ink flow in the clear pipework behind the pump and on the now exposed print head. keep going and try and drive as much air through *** possible.

Now over on the right you'll see by the exposed ink heads another pump arrangement, this is driven by a geared cam on the left of the print head assembly. Manaually rock this up and down to work the small diaphragm pumps on the print head itself. You should see the ink heads fill up with ink and any air bubbles should hopefully be forced out.

Now put it all back together and carry out all the test prints etc. My first test print had very faint marks where the magenta colours should be. another 20 pages and print head cleans on and the colour blocks are perfect.

I think it worked because manually driving the pumps added more pressure to the ink system than would normally be present, thus forcing the air over to the print head, then manually pumping the print head diaphragms clears the air down and out of the print head assembly and hopefuly flushing any dried up ink as it goes.

Regards Matt Driver (MattNav) This is almost certainly caused by air locks. I had the misfortune of having to resolve a friends C8180 failing to print Light Magenta and Magenta. No error codes were coming up and other than failing to print he 2 colours it worked fine. I managed to fix the problem by purging the lines -- here's how... 1. Remove the right hand panel (about 3 screws) then on the top prise the grey clip and drop the right hand panel down and off. 2. Repeat for the left hand panel. 3. On the right release the 2 ribbon cables and wired connections for the scanner. 4. Release the scanner bed by pressing the black hinges and pulling the scanner body away taking care to ease the cables out. 5. Remove the top plastic cover of the print bed. You can now see all the print carriage and ink line assemblies. 6. On the right on top of the print head assembly there's a small black cover, remove this too so that you can see the ink heads. Now on the left you'll see the priming pump - rotate this manually by hand and watch the ink flow in the clear pipework behind the pump and on the now exposed print head. keep going and try and drive as much air through *** possible. Now over on the right you'll see by the exposed ink heads another pump arrangement, this is driven by a geared cam on the left of the print head assembly. Manaually rock this up and down to work the small diaphragm pumps on the print head itself. You should see the ink heads fill up with ink and any air bubbles should hopefully be forced out. Now put it all back together and carry out all the test prints etc. My first test print had very faint marks where the magenta colours should be. another 20 pages and print head cleans on and the colour blocks are perfect. I think it worked because manually driving the pumps added more pressure to the ink system than would normally be present, thus forcing the air over to the print head, then manually pumping the print head diaphragms clears the air down and out of the print head assembly and hopefuly flushing any dried up ink as it goes. Regards Matt Driver (MattNav)

I did this and managed evrything according to your instructions, however I couldn't manage to get every little bubble out of the printheads, even the ones that worked ok. So I assume that both the magenta heads are blocked. Is there a way of getting solvent to the printheads to clear the magenta jets? I did this and managed evrything according to your instructions, however I couldn't manage to get every little bubble out of the printheads, even the ones that worked ok. So I assume that both the magenta heads are blocked. Is there a way of getting solvent to the printheads to clear the magenta jets?