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Noritsu D703 Index prints show banding or fuzzy strips density change


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I started to get the banding on my prints. It is very noticeable on solid colors such as the index print. I can see it in normal prints but you have to look closely. I do nozzle check and head cleaning every start up. Today I cleaned the entire internal area including the clear tape, head sensor, pads, squeeges, printer paper plate, did several startup head cleanings without any success. 

I've read that the D701 has power clean and power clean 2. I have not run any of those on my D703 yet. How much ink does it take to do these cleanings? Does anyone have any suggestions how I can resolve this issues?

Thank you, Chip

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To make power cleaning need enter service mode. Where is power cleaning on menu depends on system software version. On version 7 power cleaning and power cleaning 2 are on Function Check menu.

Try to change pump. When it is weak you might to have lines. Especially see them, when print is dark ( because need more ink ) .

Before power cleaning insert new cartridges and reset maintenance tank. Otherwise cleaning might stop in the middle, you have error and need to make initial filling.

Edited by Minilab service
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