W703496430 - VG-640 ASSEMBLY, GRIT ENCODER

Grit Encoder Assembly VG-640 – Roland VG-640 / VG-540 – W703496430

The Roland W703496430 grit roller encoder assembly (Assy, Grit Encoder) is the module that measures the rotation of the spiked drive roller (grit roller) on Roland TrueVIS VG-640 and VG-540 printers/cutters.

Consisting of a coded disc and an optical sensor, it transmits rotation pulses in real time to the machine’s electronics. This precision ensures micrometric positioning of the media and perfect alignment between printing and cutting (print & cut).

Supplied as a complete assembly (Assy), this genuine Roland part fits directly onto the grit roller shaft, without any additional adjustment, replacing the factory encoder.

Technical specifications

• OEM Part Number: W703496430
• Manufacturer: Roland DG (Japan)
• Part type: rotary encoder assembly (encoded disc + optical sensor)
• Axis / Area concerned: media feed – grit roller shaft
• Associated motor: grit roller drive motor (media shaft)
• Delivery: Complete assembled set, ready for installation
• Part type: Roland original part (OEM)
• Application: large-format eco-solvent printer/cutter – print & cut

Compatibility and use

• Roland TrueVIS VG-640
• Roland TrueVIS VG-540

Function

• Accurately detects the rotation of the grit roller during media feed
• Transmits pulses to the control board to control step-by-step feed
• Ensures consistent feed increments during printing
• Ensures alignment between print passes and cut paths (print & cut)
• Enables the exact measurement of the length of printed media

Possible symptoms of wear

• Regular horizontal bands (banding) caused by an irregular feed rate
• Misalignment between printing and cutting in print & cut mode
• Media feed error or encoder error message on the control panel
• Incorrect print length compared to the source file
• Unexpected stops or erratic operation of the paper feed

Replacing this encoder assembly restores media feed accuracy, eliminates encoder-related banding defects and restores the reliability of print & cut on the VG-640 / VG-540.

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

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