capper is very "fragile". it my look ok. remember that we are talking about air leak.
If you didn't change capper, in that time, it could be it.
you can try something to see if problem is in capper (it is improvisation, but it gives me answers): unscrew all covers to get to capping station. unscrew plate in front of capping station. there you'll se pumps. put seiko (long) screwdriver between capping station and pumps (beneath magenta capper) and push (be gentle don't push to hard) capping station up so that you get good sealing with capper (ofcours don't put screwdriver on the pump). You hold that position and make "fill cup" or if you can't fetch commands let somebody do it for you. do 2-3 fill cups. if ink starts to go to head you have problem with capper. (if seiko starts cleaning be careful because when heads are takeing of from caping position, capping station is going down!!! - has to go down)
you can try to switch position of cappers, but in that usage time they all are in not good shape, so you can do worse, you can get two heads not working...
so, this all was just for test purpose. it's not solution. you'll have to buy capper. it's called: "cap assy."
without that tool it's hard to align heads. It's possible ofcourse, but very hard!
it would be much easier if you removed wiping unit!
when getting air leak problem there could be many reasons:
1) tubing connection point on head, on firs generation heads
2) bad cappers (or small rubbers beneath them) - I had this problem week ago, so I automatically suspected that
3) dried ink on head preventing capper to do good seal (probably what you had)
4) bad dumpers (or connection of tubes on them)
i would suggest to you all to buy, to have in spare par kit 1 - 2 peaces of cappers (capp assy.) - printer needs / use 6 peaces - be careful that they (seiko) don't sell you whole set of them - you need only one or two.... eventually they will go
Johhnyboy if you are reading this, it would be good thing that you compile this well known reasons for air leak problem and make it as "sticky" topic. If you see there is many of same or similar topics about same thing. This would be very helpful for newbies...
Luckily my head is ok. Hope it was lucky to get the alignment correct.
It printed fantastic for sometime; But again i noticed that the ink is draining off from the bottom end of the tube connected to the head. This again result in MAGNETA not printing. So i seriously doubt that ink is leaking off (which i can not see at all)
Or may be i should change the tube connected to the head?
just make sure that the two rubber gromits at the base of the cap allow the base of the cap to move up and down. you can clean this in the wiping fluid, in fact soak them in the stuff as it will not hurt them. it may be these are perished and this is the cause of the problem. you can always verify this by simply swapping this "faulty" cap with another. doesn't matter about mixing colours, as this will not damage the heads. just perform a normal clean and check.
If you swapped whole cap with those two rubber gromits you should see difference! Like Nigel told you they are very important for "movement" of cap's.
In that time usage all your caps and rubbers are little bit deformed... We are talking here about air leak - something that can't be seen - something that needs really small deformation / missplacement...
Problem is probably in those rubber gromits. You can buy them separately, but price of two "rubbers" is really close to price of new cap (which includes those two rubbers) - so why to put new rubbers on old cap when you can buy new one for same money...
