W702406050 - Crop Sensor Board (registration mark sensor) Roland RF-640

W702406050 – Crop Sensor Board (registration mark sensor board) Roland RF-640

The Roland Crop Sensor Board – OEM ref. W702406050 is the optical sensor board that reads the registration marks and detects the media in the printer.

Thanks to its optical sensor, it ensures the detection of registration marks and the correct positioning of the media, and transmits this information to the machine’s electronics. A faulty sensor leads to detection or positioning errors.

Genuine Roland (OEM) part, tested and ready for installation, supplied with its cable.

Technical specifications

• OEM reference: W702406050
• Manufacturer: Roland
• Part type: Optical registration mark sensor board (Crop Sensor Board)
• Equivalent part number: W702406051 (VS-640i_01)
• À savoir: Supplied with connection cable
• Origin: genuine Roland part (OEM)
• Shipping: board tested and ready for installation

Compatibility & use

• Roland RF-640 / RF-640A
• Roland VS-640i / VS-540i / VS-300i
• Roland RA-640 / RE-640

Function

• Detects registration marks optically
• Ensures media positioning and detection
• Transmits detection information to the machine’s electronics
• Contributes to print accuracy

Signs of wear

• Registers or media not detected
• Positioning / detection errors
• Misalignment during printing
• Machine stuck on a sensor error

Replacing the Crop Sensor Board restores registration mark and media detection, as well as positioning accuracy.

♻️ DG Spare Parts – European specialist in spare parts for large-format printers and plotters.