EPSON WorkForce Enterprise WF-C17590, WF-C20590, & WF-M20590 7/9/19
Page 23
TE18-0595 Rev. A
There is a possibility that a nozzle-out occurrence for the entire print head may occur. See below photo that shows example of yellow
nozzles missing..
Possible Cause:
Failure of the Relay Ink Path Assembly(diagram Ref 503, ASP name Guide,Tube,Relay,Unit)
Remedy:
Replace the (Ref 503, Guide,Tube,Relay,Unit) following instructions in the Service Manual.
1. Perform Program No. 322:Relay Flow Path Assy; follow the instructions displayed on the screen.
2. Replace the Part
3. To complete step 4. Ink and Maint. Box should be at least 50% or more remaining.
4. Perform Program No. 422:Relay Flow Path Assy;
5. Start printer in Normal mode
6. Print a Nozzle Check and perform additional cleanings as needed.
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