User Guide
Page 19
...; Make sure the heat ventilation holes are not blocked. Do not use the projector in a horizontal position; other positions can cause heat build-up on critical parts (i.e. DMD, lens assembly, etc.) ViewSonic 13 PJ551D Smoke residue may cause build-up and damage to determine the screen size and projection distance. 249.80 227...) Tele (inches) 30.08 27.34 49.96 45.57 74.94 68.35 124.90 113.92 249.80 227.83 Position the projector in a smoky environment.
...; Make sure the heat ventilation holes are not blocked. Do not use the projector in a horizontal position; other positions can cause heat build-up on critical parts (i.e. DMD, lens assembly, etc.) ViewSonic 13 PJ551D Smoke residue may cause build-up and damage to determine the screen size and projection distance. 249.80 227...) Tele (inches) 30.08 27.34 49.96 45.57 74.94 68.35 124.90 113.92 249.80 227.83 Position the projector in a smoky environment.