NovaJet 800 Series Service Manual

Failure Analysis - Print Misfires

1.Ensure ink is in supply to cartridge jets? Are the ink lines full of ink at the reservoir tubing needles (connected to reservoir) and at the cartridge tubing/septum needles (connected to cartridges)?

2.Are the ink cartridges /contact points (flex contacts) dirty? Clean with isopropyl alcohol. Does the Prime pattern print correctly? Refer to Routine Maintenance.

3.For spitting or random ink droplets landing on the media, ensure the cartridges are only half full (20 ml) and that humidity ranges (10% to 70% RH non-condensing) are adhered to.

Figure 4-2. Excessive Ink Pressure.

4.Is the service station clean and working properly? Are the seals or wipers worn? Clean the service station under running water. Ensure all wipers stand up straight in the station. Replace service station as necessary.

Troubleshooting 4-20

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Kodak 800 SERIES service manual Failure Analysis Print Misfires, Excessive Ink Pressure