can anyone tell me why no ink is going through print head?

[Frank Horner]

Have you tried a test print? If so are there any signs of ink?
It would be unusual for both sides of the head to stop together. First if you are running ink cartridges check they are not empty, as sometimes the tabs do not pop out and the cartridge runs dry. If the ink levels are OK the next step would be to check the dampers to see if there is still ink there.

Frank

[Russell Huffer]

Mine did this, turned out to be the seal on the cartridge letting in air.

Regards

Russell.

[Andrew Thirkill]

Hi Frank

Done a test print all ok except light magenta – no ink applied whatsoever.

Changed ink cartridge to be sure that levels are ok – still no good.

Thanks for help I will check the dampers.

Thanks

Andrew

[Andrew Thirkill]

Thanks Russell – was there any obvious way to check if the seals are letting air in.

[Russell Huffer]

On mine i swopped the cartridges over as i have two of every colour and the problem moved with the cartidge, this not easy unless you have the greadier with 12 carts.

Russell.

[Bill McMurtry]

Try a new Lm damper if you’re sure ink is getting from the cart OK.

[Simon.Johnson]

Andrew,

It is possible to get a small piece of "dirt" on the seal in the capping station for any individual head which will render the pump useless and will cause the ink to stop flowing as the vacuum fails. WIping around the seal should solve this.

However, the following may also be the case:

The Grenadier uses three ink pumps, each of which works with two of the print heads. The pumps will eventually fail with the either the input or output pipe splitting. If it’s the input pipe, you will see exactly the effect you have where one colour will stop completely. If it’s the output pipe it will carry on working fine but be spraying the ink around inside the printer making a real mess eventually.

Very simple test to prove this. Remove the protection plate from in front of the three pumps. You will find each pump has a pair of pipes coming from the capping station to the pump and another pair of pipes going off to the waste bottle. You will find there are joins in the pipes to allow replacement of the pump. If you find the pump connected to your light magenta head, disconnect the two pipes coming from the capping station at these joins and swap them over Don’t worry about which is which as this is only pumping waste ink. Do a medium clean and you should now find the light magenta ink starts to work again. Eventually the head you have connected to the old light magenta side of the pump will stop working as it loses it’s vacuum. All you need to do is replace the pump and you are up and running again.