Understand what each diagnostic mode tells you about valves, voltage, and fluid systems inside your CM750.
Available diagnostics
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Sensor Test – check photocell, encoder, and gutter signals
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Valve Test – open/close ink path valves to verify operation
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Pump Status – shows activation, speed, and fault detection
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High Voltage – monitor charge voltage and EHT health
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Stream View – confirms drop breakoff and stability
Where to access them
Navigate to:System > Maintenance > Diagnostics
Why these tools matter
They help you:
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Diagnose faults without opening the machine
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Pre-empt issues with filters, valves, or pressure
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Provide support with exact fault codes or readings
Pro tip:
Log readings before and after running Clean Ink System to detect improvement.