Customer question: Which documents should I receive after buying and installing a used LED screen?
English explanation
The handover pack should make the system maintainable by someone who was not present at installation. Include the equipment list, cabinet layout, cabinet numbers, screen-zone resolutions, power drawing, signal topology, port map, processor scene, receiving-card configuration, software and firmware versions, spare list and site photos. Name files by project, zone, date and device instead of using “final” for everything. Add a start-up and shutdown procedure, emergency isolation contact, brightness modes, content resolution, cleaning limits, connector precautions and maintenance intervals. Record the inspection baseline: pixel defects, colour/brightness condition, temperature observations and any accepted limitations. A used screen may already have visible defects; documenting them prevents confusion later. Maintenance should cover power and grounding, cooling paths, fans/filters, seals, connectors, cabinet locks, calibration and configuration backups. Every service visit should record date, person, change, test pattern, result and next action. Separate ticket registration from customer-confirmed resolution. A case can be waiting for a spare, factory confirmation or site access even when it has been logged.
Service boundary
Maintenance intervals are site- and product-dependent. The pack supports operation but does not replace local electrical, structural or safety inspections. —
