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VS-640 Air in white line

Fantazia

New Member
Hello, here is a strange issue that I can not cure: What would be the cause of air in the white ink line (has cleaning fluid for some months) moving away (goes up) from the damper? Even after choke cleaning, ink flows out the opposite way. Also there's a lot of air bubbles in the ink line and some cyan ink sucked inside. I have changed print head, damper, little (20 mm) tube from Y-connector and head joint (all OEM parts). Captop is in good condition, I will replace it, but I don't think this is the issue.

Thank you.
 
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