Kodak 800 SERIES - Manual (Page 140)

Troubleshooting 4-41
NovaJet 800 Series Service Manual
create vertical bands to appear in the print. Refer to ‘Routine
Maintenance’ for cleaning or ‘Disassembly’ for encoder strip
replacement.
Figure 4-41. Main PWA Failures.
21. Replace Main PWA for severe horizontal and vertical banding
patterns. Also replace Main PWA or for specific internal file
failures (i.e. Prime pattern displays a pattern where the same
jets in all colors fail to fire even after thorough cleaning and
cartridge replacement or if only half of the color calibration
prints). Refer to Disassembly.