Roland XR-640 story and issues

[Hulleman]

Hi guys,
(1 post 1 reply because of image limit)

So the this printer has been unused for a couple of years and here is the "story" so far:
Have divided this in 2 because of the attachment limits. Question in the end of the 2nd thread.
March:

Started up the printer ran powerful cleaning and normal cleaning. Did a testprint and this was the result: Few shots with cyan

Did some more cleaning, did a headsoak (Cap down filled with cleaning liquid, cap up, plugged the exit hoses cap up, over night)
Result: Cyan, Light Cyan, some black and yellow, nothing on printhead B yet

Ran some more cleaning and a Choke CL.
Results: light magenta woke upp and some additonal lines on the others.

Did some more cleaning, did a new headsoak and forgot to plug the exit hoses so I basically drained all my cartridges.
Results: (apart from anger) Head A looking alot better, all colors represented with few magenta shots. Head B, ITS ALIVE! Got some magenta, light cyan and cyan,

did some a headwash and ran another choke clean.
Results: more magenta on Head A and other colors looking better som mixed result on Head B.

 

[Hulleman]

Next thing I did was to put in CL cartridges in all slots and ran an inkfill with CL, basically filling every cranny with CL solution.
Shutdown the machine when all the CL had reached the heads, clamped the exit hoses and let it sit over night soaking with caps up.
Result: a bit more magenta on A but worse on Head B.

Ran some more CL liquid thru and then filled with ink from cartridges.
Results: A lot more magenta on head A. Head B unchanged, small shots

So head B is not firing anything on magenta (even if it did some days ago), but when I do cleaning i can see that it pulls magena and the captop has several colors, What can the issue be? Its not clogged since it is pulling all colors. Fuses, faulty head chokevalve Ideas?

Thank you for reading!



/Julian Schön