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Troubleshooting 4-26
NovaJet 800 Series Service Manual
Clearing Cartridge Misfires
- Press lightly against jets with a water/alcohol moistened lint-free
cloth. Blot gold jet plate area, do not wipe.
- Insert cartridge and initiate a Color Test @ 100% in the 2-pass mode.
Note: running the color test in the single pass mode severely reduces
printhead resistor life.
For severe clogs use ultrasonic cleaner (30-40 sec) or hot water (10-15
sec) to break down kogation (clogging of jet plate holes) at nozzle.
Figure 4-13. Adjacent Jet Misfire (Cyan).
Note: Adjacent misfires in the prime pattern will cause microbanding.
These types of misfires must be manually compensated or cleared
through cleaning procedures.
Multiple Cartridge Failures
- Assuming cartridges/flex driver cables are clean and connectivity is
good recommend to customer to replace service station (should be
replaced every 6 months). Check ink lot codes of possible contamina-
tion. Contact technical support.