{"id":8957,"date":"2026-09-18T14:30:33","date_gmt":"2026-09-18T14:30:33","guid":{"rendered":"https:\/\/hicensign.com\/signage-factory-acceptance-testing\/"},"modified":"2026-09-18T14:45:47","modified_gmt":"2026-09-18T14:45:47","slug":"signage-factory-acceptance-testing","status":"publish","type":"post","link":"https:\/\/hicensign.com\/es\/signage-factory-acceptance-testing\/","title":{"rendered":"Pruebas de aceptaci\u00f3n de f\u00e1brica de se\u00f1alizaci\u00f3n: \u00bfQu\u00e9 se debe probar antes de enviar letreros LED e iluminados grandes?"},"content":{"rendered":"\n<style>.hicen-post{color:#25364a;font-size:17px;line-height:1.75}\n.hicen-post p{margin:0 0 20px}\n.hicen-post h2{color:#0f2742;font-size:30px;line-height:1.25;margin:46px 0 18px}\n.hicen-post h3{color:#0f2742;font-size:22px;line-height:1.35;margin:28px 0 12px}\n.hicen-post a{color:#0f2742;text-decoration:underline;text-decoration-color:#e67e22;text-underline-offset:3px}\n.hicen-post 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*\/\n.hicen-faq{border-top:1px solid #d9e2ec;margin-top:18px}\n.hicen-faq details{border-bottom:1px solid #d9e2ec;padding:14px 0}\n.hicen-faq summary{font-weight:600;color:#0f2742;cursor:pointer;list-style:none;padding-right:28px;position:relative}\n.hicen-faq summary::-webkit-details-marker{display:none}\n.hicen-faq summary::after{content:\"+\";position:absolute;right:0;top:0;font-size:22px;color:#e67e22;line-height:1}\n.hicen-faq details[open] summary::after{content:\"\u2212\"}\n.hicen-faq .answer{padding:10px 0 4px;color:#25364a}\n.hicen-faq .answer p:last-child{margin-bottom:0}\n\n\/* CTA *\/\n.hicen-cta{background:#fffaf5;border-left:4px solid #e67e22;border-radius:8px;margin:30px 0;padding:22px 24px}\n.hicen-cta p:last-child{margin-bottom:0}\n.hicen-button{background:#e67e22;border-radius:6px;color:#fff!important;display:inline-block;font-weight:700;margin-top:4px;padding:10px 18px;text-decoration:none}\n.hicen-button:hover{background:#cf6f17;color:#fff!important}\n\n\n\/* Balanced split: image slightly wider, vertically centered, 3rd paragraph flows below *\/\n.hicen-split-balanced{grid-template-columns:minmax(0,48fr) minmax(0,52fr);align-items:center;gap:36px}\n.hicen-split-balanced > .hicen-split-media figure{max-width:460px;width:100%;margin:0 auto}\n.hicen-split-balanced > .hicen-split-media figcaption{text-align:left;padding-left:0;padding-right:0}\n.hicen-split-followup{margin:18px 0 0}\n@media (max-width:768px){\n.hicen-split-balanced{grid-template-columns:1fr;align-items:start;gap:18px}\n.hicen-split-balanced > .hicen-split-media figure{max-width:520px}\n}\n@media (max-width:900px){\n.hicen-image-row-3{grid-template-columns:repeat(2,minmax(0,1fr))}\n}\n@media (max-width:768px){\n.hicen-post h2{font-size:24px;margin:36px 0 14px}\n.hicen-post h3{font-size:18px}\n.hicen-split-lr,.hicen-split-rl{grid-template-columns:1fr;gap:18px}\n.hicen-split > .hicen-split-media{max-width:520px;margin:0 auto}\n.hicen-image-row,.hicen-image-row-2{grid-template-columns:1fr;gap:14px}\n.hicen-image-row-3{grid-template-columns:1fr;gap:14px}\n.hicen-table{min-width:0;font-size:14px}\n.hicen-table th,.hicen-table td{padding:9px 11px}\n.hicen-button{display:block;text-align:center}\n.hicen-solution{grid-template-columns:1fr;gap:12px;padding:16px}\n.hicen-solution img{max-width:220px}\n.hicen-toc{padding:16px 18px}\n}<\/style>\n<article class=\"hicen-post\">\n\n<p>Signage factory acceptance testing should cover documents, dimensions, materials, welds and coatings, electrical safety, illumination, LED performance, control systems, continuous operation, spares and a closed punch list, all before the sign leaves the factory.<\/p>\n\n<p>Skip this step and any fit-up gap, dead pixel, or wiring fault becomes a shipping-container problem instead of a factory-floor problem. Fixing it after export costs far more in freight, time and reputation than catching it before packing.<\/p>\n\n<p>Here at Hicen, this is the stage where a sign either earns its shipment or gets held back, and buyers should know exactly what that process looks like before they sign off on a supplier.<\/p>\n\n<nav class=\"hicen-toc\" aria-label=\"Table of contents\"><strong>Table of Contents<\/strong><ol>\n<li><a href=\"#fat-procedure\">Approve the FAT Procedure Before Production Starts<\/a><\/li>\n<li><a href=\"#structure-appearance\">Verify Structure and Appearance Against Real Tolerances<\/a><\/li>\n<li><a href=\"#led-electrical\">Test LED and Electrical Functions Before Sign-Off<\/a><\/li>\n<li><a href=\"#handover-package\">Build a Traceable Handover Package Before Packing<\/a><\/li>\n<li><a href=\"#hicen-fat\">How Hicen Runs FAT on a Complete Sign Package<\/a><\/li>\n<li><a href=\"#faq\">Frequently Asked Questions<\/a><\/li>\n<li><a href=\"#cta\">Get a Project-Specific FAT Checklist<\/a><\/li>\n<\/ol><\/nav>\n\n<h2 id=\"fat-procedure\">Approve the FAT Procedure Before Production Starts<\/h2>\n\n<div class=\"hicen-split hicen-split-lr hicen-split-balanced\">\n  <div class=\"hicen-split-media\">\n    <figure><img decoding=\"async\" src=\"https:\/\/hicensign.com\/wp-content\/uploads\/2026\/09\/illuminated-signage-showroom-display.jpg\" alt=\"Reference showroom of finished illuminated signs including channel-letter logos and placeholder displays.\" title=\"Reference Showroom of Illuminated Signs\" loading=\"lazy\"><figcaption>Reference showroom of finished illuminated signs used to align buyer expectations before production.<\/figcaption><\/figure>\n  <\/div>\n  <div class=\"hicen-split-text\">\n    <p>Agree on the test scope, the acceptance criteria, and who signs off on what, before fabrication begins, not the week before shipping. A FAT procedure written after the sign is built tends to fit the sign rather than protect the buyer.<\/p>\n    <p>Map every project requirement to a specific FAT record. If your contract calls for a certain paint finish, a certain wind rating, or a certain LED brightness, each one needs a named test and a named pass criteria in the procedure. Vague language like &#8220;tested for quality&#8221; gives you nothing to hold a supplier to.<\/p>\n  <\/div>\n<\/div>\n<p class=\"hicen-split-followup\">Decide your witness points early too. You do not need to fly someone to the factory for every test, but you should know in advance which milestones you will review in person, by video call, or through documented reports.<\/p>\n\n<h2 id=\"structure-appearance\">Verify Structure and Appearance Against Real Tolerances<\/h2>\n\n<p>This stage catches the defects a photo will not show you later. Structural fit-up, weld quality and surface finish need checking against numbers, not general impressions.<\/p>\n\n<div class=\"hicen-image-row-2\">\n<figure><img decoding=\"async\" src=\"https:\/\/hicensign.com\/wp-content\/uploads\/2026\/09\/carage-light-boxes-workshop-batch.jpg\" alt=\"Multiple red CARAGE illuminated light boxes lined up on a workshop floor.\" title=\"CARAGE Light Boxes on Workshop Floor\" loading=\"lazy\"><figcaption>Batch of finished light boxes staged on the workshop floor for size, surface and appearance checks.<\/figcaption><\/figure>\n<figure><img decoding=\"async\" src=\"https:\/\/hicensign.com\/wp-content\/uploads\/2026\/09\/oranz-sushi-channel-letter-fabrication.jpg\" alt=\"Long white ORANZ SUSHI channel letter assembly resting on a factory workbench.\" title=\"ORANZ SUSHI Channel Letter Fabrication\" loading=\"lazy\"><figcaption>Long channel letter assembly on the workshop floor showing fabrication scale and finish.<\/figcaption><\/figure>\n<\/div>\n\n<p>At Hicen, laser-cut components are held to a dimensional tolerance within 0.5&nbsp;mm, with clean edges free of burrs. Welds are checked for full penetration, no cold joints, and a fully polished, flat finish at every weld spot. These are not abstract targets. A module that is out of tolerance at this stage is a module that will not align cleanly with its neighbors once it is mounted on site.<\/p>\n\n<p>Surface materials get checked too. Every batch of outdoor fluorocarbon paint, powder coating and plating material gets verified before it goes onto a sign. Metal sheet stock, steel, aluminum, stainless, brass, copper, gets inspected for correct thickness and a flat surface free of scratches or rust before it enters production.<\/p>\n\n<p>Ask any supplier what they check at incoming material stage. That answer tells you a lot about what happens downstream.<\/p>\n\n<div class=\"hicen-table-wrap\">\n<table class=\"hicen-table\">\n<thead><tr><th>FAT Check<\/th><th>Acceptance \/ Test<\/th><th>Hicen Process<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>Dimensional tolerance<\/td><td>Within 0.5&nbsp;mm<\/td><td>Laser-cut parts verified against drawing before assembly<\/td><\/tr>\n<tr><td>Weld condition<\/td><td>Full penetration, no cold joints<\/td><td>Polished flat finish at every weld spot<\/td><\/tr>\n<tr><td>Material condition<\/td><td>No scratches, no rust, correct thickness<\/td><td>Incoming stock inspection for steel \/ aluminum \/ stainless \/ brass \/ copper<\/td><\/tr>\n<tr><td>Surface finish<\/td><td>Batch-verified fluorocarbon paint, powder coat, plating<\/td><td>Each batch approved before it enters production<\/td><\/tr>\n<tr><td>Finished sign aging<\/td><td>48 hours continuous power-on<\/td><td>Burn-in surfaces early LED, driver and flicker failures<\/td><\/tr>\n<tr><td>Power supply load test<\/td><td>4 consecutive hours under full load<\/td><td>Temperature and voltage stability monitored<\/td><\/tr>\n<tr><td>Water spray test<\/td><td>15 &#8211; 30 minutes<\/td><td>Sprayed across glue joints, wire outlets, panel bonding points<\/td><\/tr>\n<tr><td>LED uniformity<\/td><td>Even arrangement, no dark spots or bright dots<\/td><td>Channel letter \/ light box face inspection<\/td><\/tr>\n<tr><td>Grounding \/ electrical safety<\/td><td>Insulation, grounding, circuit function, protection devices<\/td><td>Verified before any longer powered test<\/td><\/tr>\n<tr><td>Waterproofing<\/td><td>Outdoor-rated seals at LED assembly<\/td><td>Filling-glue seal on illuminated components<\/td><\/tr>\n<tr><td>Large LED display burn-in<\/td><td>24 &#8211; 72 hours typical<\/td><td>Confirm duration and defect thresholds with the display manufacturer<\/td><\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"hicen-note\">Note: large-format digital LED display faces typically ship from a specialized display partner rather than a channel-letter or light-box factory, so their burn-in duration and dead-pixel thresholds vary by manufacturer. Confirm the exact scope with whichever factory builds that specific component.<\/p>\n\n<h2 id=\"led-electrical\">Test LED and Electrical Functions Before Sign-Off<\/h2>\n\n<p>Electrical safety testing comes first here: insulation, grounding, circuit function and protection devices all need verification before anything gets powered up for a longer test.<\/p>\n\n<p>For the illuminated components Hicen manufactures directly, channel letters, light boxes and halo-lit signage, LED assembly is checked for even arrangement with no dark spots or bright dots, then sealed with filling glue to meet outdoor waterproof standards.<\/p>\n\n<p>Every finished sign then runs a 48-hour continuous power-on aging test. That is long enough to surface early LED failures, flickering or driver faults that a five-minute check would miss entirely. Power supplies get their own test too, running under full load for four consecutive hours while temperature and voltage stability are monitored.<\/p>\n\n<div class=\"hicen-image-row-3\">\n<figure><img decoding=\"async\" src=\"https:\/\/hicensign.com\/wp-content\/uploads\/2026\/09\/market-illuminated-sign-wiring-bench.png\" alt=\"Illuminated MARKET sign on a workshop table surrounded by wiring and soldering tools.\" title=\"Electrical Wiring Bench\" loading=\"lazy\"><figcaption>Illuminated sign on a wiring bench where electrical connections and LED function are checked.<\/figcaption><\/figure>\n<figure><img decoding=\"async\" src=\"https:\/\/hicensign.com\/wp-content\/uploads\/2026\/09\/burger-illuminated-sign-factory-burn-in.jpg\" alt=\"Burger illuminated sign with orange halo lighting powered on in a factory.\" title=\"Halo-Lit Sign Burn-In\" loading=\"lazy\"><figcaption>Illuminated halo-lit sign powered on during factory lighting and uniformity testing.<\/figcaption><\/figure>\n<figure><img decoding=\"async\" src=\"https:\/\/hicensign.com\/wp-content\/uploads\/2026\/09\/oranz-restaurant-channel-letters-factory-floor.jpg\" alt=\"Large ORANZ RESTAURANT channel letters and black plaque laid out on a factory floor.\" title=\"Channel Letters Pre-Packing Inspection\" loading=\"lazy\"><figcaption>Finished channel letters laid out for final visual inspection before packing.<\/figcaption><\/figure>\n<\/div>\n\n<p>Waterproofing gets tested directly rather than assumed. Inspectors spray water evenly across glue joints, wire outlets and panel bonding points for 15 to 30 minutes, then open the unit to check for seepage.<\/p>\n\n<p>If your project includes a large-format digital LED display face, that component typically ships from a specialized display partner rather than from a channel-letter or light-box factory, so its FAT looks a little different.<\/p>\n\n<p>Ask for dead-pixel counts, brightness and color calibration records, content playback verification and a burn-in period, ideally 24 to 72 hours of continuous operation, before it is accepted. Confirm this scope with whichever factory actually builds that component, since burn-in duration and defect thresholds vary by manufacturer and are not a fixed industry number.<\/p>\n\n<h2 id=\"handover-package\">Build a Traceable Handover Package Before Packing<\/h2>\n\n<p>A test that is not documented is a test you cannot prove happened. Every stage needs a record: signed inspection sheets, photos, video where practical, the instruments used, and calibration details for anything measured.<\/p>\n\n<div class=\"hicen-process\">\n  <div class=\"hicen-process-step\"><div class=\"step-num\">01<\/div><div><div class=\"step-title\">Incoming material inspection<\/div><div class=\"step-body\">Steel, aluminum, stainless, brass, copper, paint, plating and electronic parts are checked against specification before they enter production.<\/div><\/div><\/div>\n  <div class=\"hicen-process-step\"><div class=\"step-num\">02<\/div><div><div class=\"step-title\">In-process production patrol<\/div><div class=\"step-body\">Operators and QC verify fit-up, weld quality and assembly at the points where defects are cheapest to fix.<\/div><\/div><\/div>\n  <div class=\"hicen-process-step\"><div class=\"step-num\">03<\/div><div><div class=\"step-title\">Semi-finished product sampling<\/div><div class=\"step-body\">Sub-assemblies are sampled for appearance and dimension before they are joined into the finished sign.<\/div><\/div><\/div>\n  <div class=\"hicen-process-step\"><div class=\"step-num\">04<\/div><div><div class=\"step-title\">Comprehensive finished-product inspection<\/div><div class=\"step-body\">Aging, waterproofing, dimensions and appearance are all verified on the completed unit, not assumed.<\/div><\/div><\/div>\n  <div class=\"hicen-process-step\"><div class=\"step-num\">05<\/div><div><div class=\"step-title\">Final recheck before packing<\/div><div class=\"step-body\">One last pass against the packing list and QC checklist so what ships is what was signed off.<\/div><\/div><\/div>\n<\/div>\n\n<p>Hicen runs this as a five-step system: incoming material inspection, in-process production patrol, semi-finished product sampling, comprehensive finished-product inspection covering aging, waterproofing, dimensions and appearance, then a final recheck before packing. Complete packing lists and QC checklists ship with every order, so what left the factory is documented, not just assumed.<\/p>\n\n<p>Close every nonconformity before the sign gets packed, not after. An item marked &#8220;accept with corrective action&#8221; that never gets a documented fix is a defect waiting to surface on your job site instead of your factory floor.<\/p>\n\n<div class=\"hicen-table-wrap\">\n<table class=\"hicen-table\">\n<thead><tr><th>Record<\/th><th>What the Buyer Should Receive<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>Inspection sheets<\/td><td>Signed FAT \/ QC records for every stage<\/td><\/tr>\n<tr><td>Photos<\/td><td>Visual evidence of finish, fit-up, illumination<\/td><\/tr>\n<tr><td>Video<\/td><td>Witness \/ testing evidence where practical<\/td><\/tr>\n<tr><td>Measurement records<\/td><td>Instrument readings and test results<\/td><\/tr>\n<tr><td>Calibration details<\/td><td>Traceability for any instrument used in measurement<\/td><\/tr>\n<tr><td>Packing list<\/td><td>Full shipment contents<\/td><\/tr>\n<tr><td>QC checklist<\/td><td>Final inspection status at packing<\/td><\/tr>\n<tr><td>Punch list<\/td><td>Closed and signed off before packing<\/td><\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n<h2 id=\"hicen-fat\">How Hicen Runs FAT on a Complete Sign Package<\/h2>\n\n<p>Hicen applies this same five-step process to every illuminated sign we manufacture. We coordinate the same discipline with LED display partners when a project includes a large-format digital face as part of a <a href=\"https:\/\/hicensign.com\/turnkey-project-solutions\/\">turnkey project<\/a>.<\/p>\n\n<p>Our full <a href=\"https:\/\/hicensign.com\/quality-control\/\">quality control process<\/a> and <a href=\"https:\/\/hicensign.com\/manufacturing-process\/\">manufacturing process<\/a> documentation are available for your review. Our <a href=\"https:\/\/hicensign.com\/hicen-certification\/\">certifications<\/a> give your team a starting point for setting acceptance criteria.<\/p>\n\n<p>If you are sourcing a complete <a href=\"https:\/\/hicensign.com\/outdoor-business-signs\/\">outdoor sign package<\/a> or comparing suppliers for a larger sign project, ask each one for their actual FAT numbers, not just a claim that testing happens. The gap between those two answers tells you most of what you need to know.<\/p>\n\n<div class=\"hicen-solution\">\n  <img decoding=\"async\" src=\"https:\/\/hicensign.com\/wp-content\/uploads\/2026\/06\/Signs-for-any-Business-or-Industry-banner.png\" alt=\"Hicen signage solutions banner covering retail, malls, hotels, restaurants, transit and public spaces.\" loading=\"lazy\">\n  <div>\n    <h4>Explore Hicen Signage Solutions by Industry<\/h4>\n    <p>Retail, shopping malls, hotels, restaurants, scenic spots, airports and transit hubs \u2014 see how Hicen structures a complete sign package, from illuminated branding to large-format digital displays, with FAT built into every step.<\/p>\n    <a class=\"hicen-solution-cta\" href=\"https:\/\/hicensign.com\/signs-solution\/\">View Industry Solutions<\/a>\n  <\/div>\n<\/div>\n\n<h2 id=\"faq\">Frequently Asked Questions<\/h2>\n\n<div class=\"hicen-faq\">\n<details open><summary>Must the owner witness FAT in person?<\/summary><div class=\"answer\"><p>No, though it helps on larger or higher-risk projects. Many buyers review test records, photos and video documentation instead of traveling to the factory, and reserve in-person or video witnessing for specific milestones that matter most to them. Tell us which stages matter to your project and we will build the witness plan around that.<\/p><\/div><\/details>\n<details><summary>How long should LED display burn-in testing last?<\/summary><div class=\"answer\"><p>For illuminated signage components, a 48-hour continuous power-on test is a solid baseline that reveals most early failures. Large-format LED display faces from a specialized partner often run 24 to 72 hours, depending on the manufacturer&rsquo;s own standard. There is no single number that applies everywhere, so confirm the exact duration with whichever factory builds that specific component.<\/p><\/div><\/details>\n<details><summary>Can FAT replace site commissioning?<\/summary><div class=\"answer\"><p>No. FAT confirms the sign works correctly in factory conditions before it ships. Site commissioning confirms it still works after transport, installation and connection to your actual site power and structure. Both matter, and skipping either one leaves a real gap in your quality process.<\/p><\/div><\/details>\n<\/div>\n\n<h2 id=\"cta\">Get a Project-Specific FAT Checklist<\/h2>\n\n<div class=\"hicen-cta\">\n<p>Send us your sign type, project specifications, acceptance requirements and any witness or testing requirements, and we will return a factory acceptance test checklist mapped to your actual signage package, covering every stage from incoming materials through the final pre-packing recheck.<\/p>\n<a class=\"hicen-button\" href=\"https:\/\/hicensign.com\/contact-us\/\">Request a FAT Checklist<\/a>\n<\/div>\n\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>A practical guide to signage factory acceptance testing: documents, dimensions, welds, electrical safety, illumination, LED burn-in and the traceable handover package every large LED or illuminated sign should ship 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