NC-UV0609MAX-II Light grating sensor replacement

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Richtig NC-UV0609MAX-II Light grating sensor replacement​ restores X-axis reading on this 600×900 mm industrial UV printer. The machine prints 0–180 mm height, uses industrial Epson heads per BOM—commonly 13200-U1 white, 13200-U1HD-Farbe und 11600-U1-Lack, or I3200/I3200-HD/I1600 configurations—runs CMYK+LC+LM+LK+LIK+W+V at 720×600/900/1200 dpi, FlexiPRINT MiniServer 22, 470W, Wechselstrom 220/110 V, Unterdruck-Öko-UV-Tinte, 25–28°C / 35–65 % relative Luftfeuchtigkeit. The light grating sensor reads the encoder strip; failures cause position jumps, ghosting or homing errors. An OEM Nocai reader returns smooth feedback.

Vorbereitung

Ausschalten, unplug and verify grounding. Wear antistatic gloves and work in clean light. Through the panel, Treiber oder FlexiPRINT, park the carriage mid-beam. Prepare an OEM Nocai grating sensor, small Phillips driver, Pinzette, fusselfreie Tücher, ≥99% isopropyl alcohol and bracket photos. Do not touch the encoder strip or X-axis limit switch during setup.

Remove the old sensor

Open the cover, locate the reader on the carriage facing the encoder strip, disconnect its ribbon or cable, label the connector, and unscrew the bracket. Lift the old unit straight out. Inspect the optical window, cable and bracket for ink mist, scratches or looseness. If only dust causes errors, wipe the strip and window with alcohol in one direction, then retest before replacing.

Install the new sensor

Mount the OEM sensor in the original orientation. Align its optical window with the encoder strip, keep the gap per manual—Nocai same-series guidance commonly uses 1–2 mm—and tighten screws lightly to avoid tilt. Reroute the cable away from the X-axis belt, carriage path and UV lamp, then lock the connector. Confirm the reader sits centrally in the strip slot and never contacts the scale.

Encoder test and alignment

Reconnect power and enter the service menu; run “Encoder Test” or equivalent, then move the carriage across the full width. The X-axis readout should stay positive and increase smoothly without jumps. Führen Sie die automatische Reinigung aus, print a nozzle test, step grid and alignment pattern; measure printed size against design. If drift remains, recenter the sensor, recheck the gap and cable. Stable readings complete the NC-UV0609MAX-II Light grating sensor replacement.

Betreuung nach dem Wechsel

Wipe the encoder strip and sensor window with alcohol in one direction weekly, schedule strip cleaning about every 500 Betriebsstunden, and monitor carriage noise for the first hour. Service rails, ink station and cap top per manual, use only Nocai eco UV ink and original sensors, und halten Sie die Temperatur bei 25–28 °C / 35–65 % relative Luftfeuchtigkeit.