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CIJ Printer Maintenance & Troubleshooting
Guides for fixing CIJ printer issues, running maintenance, changing fluids, and preventing faults on CM750 and compatible models.
Ink & Fluid Management
- How do I change ink types in my CM750 printer?
- How do I run an Umbilical Purge on my CM750 printer?
- How do I prepare my CIJ printer for shutdowns or holidays?
- What is the Viscosity Monitoring System (VMS) on the CM750?
- Why does my CM750 show ‘Makeup Overuse’ or ‘Ink Overuse’?
- Which CIJ fluid do I need for my substrate?
- What’s the shelf life of Needham CIJ fluids?
- Can I use acetone-based inks in the CM750?
- What happens if I mix two CIJ ink types?
- What does contaminated ink look like?
- How to tell if your CIJ ink has expired
- What causes ink to foam in the return line?
- How to flush CIJ ink before switching types
- Why is my ink turning thick or gelatinous?
- What’s the difference between fast-dry and high-adhesion ink?
- How to store CIJ ink in high-temperature environments
Printer Faults & Error Codes
- What do the warning and fault icons on my CM750 mean?
- What causes a gutter fault on my CM750—and how do I fix it?
- What causes a charge fault or EHT error on my CM750 printer?
- Why is my CM750 not detecting ink stream breakoff?
- What causes ink to leak from my CIJ printhead?
- Why won’t my CM750 start ink flow?
- Why does my CM750 show pressure too high or too low?
- Why does my CM750 keep stopping mid-print?
- What does 'ink system error' mean on my CM750?
- Why does my CIJ printer print faint or missing characters?
- Why does the CM750 say ‘Solvent Low’ even after refilling?
- Why does my CM750 show a 'no charge' fault?
- Why is my CIJ print stream unstable or drifting?
- Why does my CM750 take too long to start up?
- Why is ink bubbling in the return line of my CIJ printer?
- How do I fix 'Head Not Ready' on the CM750?
- Why is there ink mist or overspray around the printhead?
- Why is the CM750 showing a deflection fault?
Routine Maintenance & Servicing
Printer Setup & Operation
- What’s the difference between Gate, Trigger, and Ignore modes in CIJ printers?
- How do I set up and calibrate an encoder on my CM750 printer?
- What’s the difference between Normal, High-Quality, and High-Speed print modes on my CM750?
- Why is the print position drifting during production?
- Why does my CM750 keep triggering print twice?
- What causes CIJ printer messages to print out of alignment?