Arvico SEG Lightbox Installation Guide

Applies to: portable and wall-mounted SEG LED lightboxes, single-sided and double-sided versions.

Before You Begin

Open the carton on a clean, flat surface. Confirm that all frame sections, corner connectors, feet or mounting hardware, power supply, LED connectors, backer fabric when supplied, and SEG graphics are present. Do not plug in the lightbox until the frame is assembled and all visible wiring is seated.

For wall-mounted or suspended installations, use a qualified installer and confirm that the mounting surface, anchors, electrical connection, and local code requirements are appropriate for the finished display weight and location.

Tools And Workspace

• Clean gloves
• Soft work surface or protective cloth
• Allen key or driver supplied with the kit
• Level and tape measure
• Two-person handling for large frames
• Qualified installer for permanent mounting

Assembly

• Lay the frame sections face down and match any labels, numbers, or matching profile ends before tightening.
• Insert the corner connectors into the first extrusion section and lightly tighten the set screws.
• Join the matching extrusion section to form the corner. Keep the frame square while tightening.
• Repeat for the remaining corners. For large frames with split sides, connect straight joiners before final tightening.
• Install feet, bases, hanging points, or wall brackets according to the selected mounting method.
• Confirm that the frame is square by measuring diagonals. Adjust before installing graphics.

Electrical Connection

• Keep the power supply unplugged.
• Connect matching LED leads and power leads. Do not force mismatched connectors.
• Check that each connector is fully seated and routed away from sharp edges or pinch points.
• After the frame is stable, briefly plug in the system to confirm illumination.
• Unplug again before installing or adjusting graphics.

Backer And Graphic Installation

Install any reflective backer first, then the printed front graphic.

• Start with the pull-tab corner if present.
• Press the silicone edge into one corner, then the opposite corner.
• Set the remaining two corners.
• Press the midpoint of each side into the channel.
• Work from each midpoint toward the corners in short, even sections.
• Do not stretch the fabric aggressively. A smooth fit comes from even seating, not pulling.
• For double-sided lightboxes, repeat the same process on the second side.

Final Inspection

• Frame is square and stable.
• Feet or mounts are tight.
• All LED zones illuminate evenly.
• No wire is pinched by an extrusion or graphic.
• Graphic corners are seated.
• No wrinkles, diagonal tension lines, or loose silicone edges remain.
• Pull tab is accessible for future graphic replacement.

Care

Turn off and unplug the lightbox before cleaning. Dust with a dry microfiber cloth. Do not spray liquid directly into the LED channel, power supply, or extrusion. Store replacement graphics flat or rolled around a wide core with the print side out.

Troubleshooting

Uneven graphic tension: remove the closest side and reinstall from corners to midpoints.

One LED area does not illuminate: unplug power, check the nearest connectors, then test again.

Frame does not sit flat: loosen corners slightly, square the frame, and retighten.

Graphic appears too small or too large: stop installation and submit photos through FastProof / Match My Frame before forcing the graphic into place.

Need review? Start with FastProof, Match My Frame, or Request a Quote.