Kodak 800 SERIES - Manual (Page 155)

Troubleshooting 4-56
NovaJet 800 Series Service Manual
7. Always run a color test @100% in the 2 pass print mode to verify
the proper pressure levels have been achieved within the cartridge.
8. Replace the septum connector and attached cartridge tubing
needle.
9. Replace reservoir tubing needle.
10. Replace the blue or gray valve in the floating carriage cover. Refer
to Disassembly.
11. Replace the blue or gray female valve near reservoir.
12. Replace the ink reservoir.
Figure 4-59. Reservoirs and Ink Delivery System.
13. Replace the ink delivery system.