NEC VT440 Service Manual

Also see for MultiSync VT440: User manual Installation data Specifications User manual

NEC VT440 Service Manual Manual pdf 20 page image

E–16RGBINPUTOUTPUTAUDIOININOUTOUTPC-CONTROL S-VIDEO VIDEOWARNING• Installing your projector on the ceiling must be done by a quali-fied technician. Contact your NEC dealer for more informa-tion.* Do not attempt to install the projector yourself.• Only use your projector on a solid, level surface. If the projec-tor falls to the ground, you can be injured and the projectorseverely damaged.• Do not use the projector where temperatures vary greatly. Theprojector must be used at temperatures between 32˚F (0˚C)and 95˚F (35˚C).• Do not expose the projector to moisture, dust, or smoke. Thiswill harm the screen image.• Ensure that you have adequate ventilation around your pro-jector so heat can dissipate. Do not cover the vents on the sideor the front of the projector.If your projector is mounted on the ceiling and your image is upsidedown, use the “Menu” and “Select” buttons on your projector cabi-net or st button on your remote control to correct the orientation.(See page E-31.)Reflecting the ImageUsing a mirror to reflect your projector’s image enables you to enjoya much larger image. Contact your NEC dealer if you need a mirror.If you’re using a mirror and your image is inverted, use the “Menu”and “Select” buttons on your projector cabinet or st buttons onyour remote control to correct the orientation. (See page E-31.)Ceiling InstallationA: Distance between the lens and the screen centerB: Vertical distance between the top of the supplied ceiling mount and the screen centerC: Horizontal throw distance between screen surface and the lensF: Vertical distance between projector base and top of imageFormulas(mm)H” = Horizontal Screen Width (inch)A = C/cosαB = 94 + 5.5 × MC (wide) = 36.8712 × (diagonal screen size/ 0.92205) – 43.5689C (tele) = C(wide) × 1.2F = 1.4516 × M – 94M = 1.25H” / 22.86Formulas(inch)H” = Horizontal Screen WidthA = C/cosαB = (94+5.5 × M) / 25.4C (wide) = (36.8712 × (diagonal screen size/0.92205) – 43.5689) / 25.4C (tele) = C (wide) × 1.2F = 1.4516 × M – 94/25.4M = 1.25H / 0.9α degree 9.01 8.93 8.85 8.82 8.81 8.79 8.78 8.77 8.75 8.74 8.74 8.73 8.72 8.72β (=sinα) 0.16 0.16 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15γ (=cosα) 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99Screen Size H-Width inch 24 32 48 56 64 72 80 96 120 144 160 192 216 2404:3 Diagonal inch 30 40 60 70 80 90 100 120 150 180 200 240 270 300A mm 1171 1471 2242 2628 3013 3399 3785 4556 5713 6870 7641 9184 10341 11498inch 46 58 88 103 119 134 149 179 225 270 301 362 407 453C mm 1156 1452 2214 2595 2976 3357 3738 4500 5644 6787 7549 9074 10217 11360inch 46 57 87 102 117 132 147 177 222 267 297 357 402 447B mm 277 338 461 522 583 644 705 827 1011 1194 1316 1561 1744 1927inch 11 13 18 21 23 25 28 33 40 47 52 61 69 76F mm -46 -29 3 19 35 51 67 100 148 196 229 293 341 390inch -2 -1 0 1 1 2 3 4 6 8 9 12 13 15α degree 6.28 7.1 7.0 7.0 7.0 7.0 6.9 6.9 6.9 6.9 6.9 6.9 6.9 6.9β (=sinα) 0.11 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12γ (=cosα) 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99Screen Size H-Width inch 20 32 48 56 64 72 80 96 120 144 160 192 216 2404:3 Diagonal inch 25 40 60 70 80 90 100 120 150 180 200 240 270 300A mm 1396 1902 2900 3399 3898 4397 4896 5893 7390 8887 9885 11881 13378 14875inch 55 75 114 134 153 173 193 232 291 350 389 468 527 586C mm 1387 1887 2878 3373 3869 4364 4860 5851 7337 8823 9814 11796 13282 14768inch 55 74 113 133 152 172 191 230 289 347 386 464 523 581B mm 247 338 461 522 583 644 705 827 1011 1194 1316 1561 1744 1927inch 10 13 18 21 23 25 28 33 40 47 52 61 69 76F mm -54 -29 3 19 35 51 67 100 148 196 229 293 341 390inch -2 -1 0 1 1 2 3 4 6 8 9 12 13 15Zoom Lens (Wide)Zoom Lens (Tele)ACFB α