Scope 2 Normative references 3 Terms and definitions 4 General requirements 4.1 Normal working conditions 4.2 Graphical symbols for equipment 4.3 Technical requirements 5 Test methods 5.1 Working conditions 5.2 Power supply 5.3 Test environment 5.4 Stabilization time 5.5 Test conditions 5.6 Appearance and structural inspection 5.7 Function, interface and display format inspection 5.8 Normal temperature optical and electrical performance test 5.9 Acoustic performance test 5.10 Remote control transmitter performance test 5.11 Electromagnetic compatibility test 5.12 Reliability test 5.13 Optical radiation safety test 5.14 Environmental adaptability test 5.15 Battery safety and environmental protection requirements Test 5.16 After-sales service 6 Inspection rules 7 Marking, instructions for use, packaging, transportation and storage