Section,Check,Record,Safe to continue?
Identity,Model and order reference,"Product model, order reference, size, material, install type and date",
Symptom,Precise symptom,"E.g. stops 30 cm before full deployment; when it started",
Power,Screen circuit live,"Breaker, outlet and any isolation switch checked",Yes if power confirmed
Power,Shared/switched circuit,"Lighting or projector circuit that also feeds the screen",
Control,All methods tested,"Remote / wall switch / trigger / control system — which work",Fault localized to failing path
Control,Remote basics,"Fresh batteries, close range, re-pairing procedure if authorized",
Control,Trigger source,"Projector trigger output active; projector settings unchanged",
Thermal,Recent cycle count,"Consecutive up-down cycles before failure; recovery after rest",Wait for cooling before retest
Mechanical,Travel path clear,"Furniture, cables, fittings or objects in path; contact marks",Stop if obstruction found
Mechanical,Bottom bar level,"Visual check only — no force, no opening the housing",Stop if uneven travel
Mechanical,Noise,"Grinding, clicking or straining recorded on video with sound",Stop operating
Limits,Stop heights,"Where screen stops in both directions — measured, not adjusted",Do not adjust without model procedure
Evidence,Photos and video,"Screen, housing, bottom bar photos; one full operating attempt on video",
Escalation,Sent to supplier,"Date evidence sent; installer or factory contact",