Moderator: E.J. Peiker

All times are UTC-05:00

  
« Previous topic | Next topic »  
Reply to topic  
 First unread post  | 5 posts | 
by Bill Morales on Thu Dec 17, 2015 7:46 pm
User avatar
Bill Morales
Forum Contributor
Posts: 1943
Joined: 27 Dec 2005
Location: MD
Member #:00725
I have a Epson 7900 that I haven't used in over a month (I know). Doing a nozzle check it shows that I have a clogged green ink. I've done several normal cleans, a couple pair cleans, and two power cleans without any success. The green cartridge is about 80% full. I know I have to get the green working properly and hope I don't need a new nozzle. A question that I have is if I print an image or green blocks the way it is, it prints ok. Is the printer just creating greens from yellows and blues?

The nozzle check print shows zero green ink being applied. How many power cleans should I do before giving up? I appreciate any suggestions.
 

by E.J. Peiker on Fri Dec 18, 2015 8:09 am
User avatar
E.J. Peiker
Senior Technical Editor
Posts: 86761
Joined: 16 Aug 2003
Location: Arizona
Member #:00002
You might try this:
https://www.youtube.com/watch?v=lU6PbizbKaw
 

by Wayne Fox on Fri Dec 18, 2015 11:45 am
Wayne Fox
Forum Contributor
Posts: 23
Joined: 17 Mar 2011
With Epson’s newer printers, distilled water is pretty safe, windex is pretty risky.  I’ve seen at least 6 or so Epson’s that have tried windex (including one of my own) which seems to have damaged electronics in the head (after using, even more nozzles are missing and are unrecoverable). Certainly circumstantial evidence, but I’d try water first, it should be enough to soften any dried ink in nozzles.

However, if a nozzle check shows 0 color in a channel, it isn’t from clogs.  This is almost always caused by a faulty or stuck damper.

As far as power cleans, they should be used very sparingly.  After a power clean, always print a page that will use all colors pretty aggressively immediately after and before checking nozzles, because that process can sometimes pull air back into a nozzle so there is no ink available.  But power cleans can actually damage a head.  In the newest printers p6000,7000,8000,9000) power cleans are inside an administrator password protected option, not available in the normal maintenance menu.

I have a page I print after any nozzle clean to make sure air is bled out and the ink has a chance to be printed.  Often missing nozzles after a clean are not the result of a problem other than a little air in the nozzle.  In fact, If I only have a few missing nozzles, print this page instead of doing a clean often remedies the problem.

Here’s a link if anyone is interested.  

https://dl.dropboxusercontent.com/u/233 ... age_v2.jpg
 

by signgrap on Fri Dec 18, 2015 12:09 pm
User avatar
signgrap
Lifetime Member
Posts: 1776
Joined: 1 Sep 2004
Location: Delaware Water Gap, PA
Member #:00424
Plus one on Wayne's suggestion of using Distilled water. Very low risk of damaging anything. Distilled water is like a vacuum in that it "sucks up" anything that is water soluble. 
Dick Ludwig
 

by Bill Morales on Fri Dec 18, 2015 3:10 pm
User avatar
Bill Morales
Forum Contributor
Posts: 1943
Joined: 27 Dec 2005
Location: MD
Member #:00725
Thanks guys for taking the time to reply. I will check out the links provided and see what I can do. I appreciate it!!
 

Display posts from previous:  Sort by:  
5 posts | 
  

Powered by phpBB® Forum Software © phpBB Group