If automatic printhead maintenance (AMS) is not functional, the following manual procedure can be used temporarily to attempt to recover nozzles.
Foam Tipped Swab (3010118211)
Flush (3010106646 Flush UV 1 Liter) or Isopropyl alcohol (99% pure)
Make sure the seam on the swab does not contact the printhead.
Do not touch the nozzle surface of the printhead with the dry swab! This can lead to excessive wear on the nozzles.
Please call your local field service representative to schedule a visit to service the AMS unit. Recovering nozzles by wiping is to be used only as a temporary procedure until the AMS unit is fixed.