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With roll paper I have the auto forward light ON. How will disable it ? Problem is auto cutter dont work automatically.

I exchanged pump unit and everything is ok.

I have strange problem on the plotter Stylus Pro 11880.Light cyan damper and ink tube has vaccum with air bubble. On the nozzle check I have missing Cyan segment,Light cyan is good. I tried change print head and dampers ,same problem. I can not see any problem on the ink tubes to the cartridge...

I assume that one damper of 4 has the function of dividing the black ink from one tube into two parts and that two nozzles on the head are black. Is the problem a defective damper, the air in the damper and ink system or the pump cap assy is not working well? You need to see above the print...

@mikling I can not find a pdf document or a book with the nozzle check pictures to understand if you need to clean print heads, pump station, dumpers, air in pipelines ...?

i use, dry oil-free cleaning spray PRF 6-68

WF-4730, print head FA32001 part code

Epson stylus photo R1800 print head F158000; Epson stylus photo R2000 print head F186000

Dirty , defective paper sensor or little fuse on MB are the problems that you can solve. On the L series you can try to change the transistor if the main board does not work anyway. The most common cause of the transistor burning is a burned print head.