Customer question: How should my team install used cabinets without creating alignment or signal problems?
English explanation
Start with the approved layout, not with the nearest cabinet in the transport case. Check the screen orientation, cabinet numbers, columns, rows, maintenance direction and independent zones. Confirm the wall or structure, base level, anchors, support, lifting method and access route before placing cabinets. Used cabinets may have slightly different frames or locks, so inspect and group them before assembly. Install the mechanical structure and level the first reference row. Engage locks progressively and check seams, alignment pins and support. Keep the power and signal paths labelled. Connect the processor output to the first cabinet’s signal IN, then follow the approved IN-to-OUT cascade. Do not use a cabinet’s appearance to guess direction. Power circuits should remain separate from signal planning, and all electrical work should be completed by qualified personnel. After a small section is assembled, run grid, arrow, solid-colour and black-field tests. Confirm cabinet direction, mapping and receiver status before expanding. Photograph the reference row, connector labels and final topology. If the used cabinets come from different batches, keep them identified and plan uniformity checks before customer acceptance.
Service boundary
Structural, lifting, electrical and outdoor installation approval belongs to qualified site professionals. The checklist supports the work; it does not replace the approved design. —
