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InFocus Screenplay 4805 Light Tunnel Replacement

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Replace the light tunnel if experiencing dark bands across or on the edges of the screen.

For this project you'll need a can of compressed air to clean the inside if it's dirty. You'll also need a Torx screwdriver and a metal spudger.

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  1. InFocus Screenplay 4805 Light Tunnel Replacement, Top Panel: crwdns2935265:01crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 InFocus Screenplay 4805 Light Tunnel Replacement, Top Panel: crwdns2935265:01crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 InFocus Screenplay 4805 Light Tunnel Replacement, Top Panel: crwdns2935265:01crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Flip the projector on its back.

    • Use the Phillips #2 screwdriver to remove the (4) four 2 cm gold screws.

    • Use the Phillips #2 screwdriver to remove the (3) three 1 cm silver screws.

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  2. InFocus Screenplay 4805 Light Tunnel Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 InFocus Screenplay 4805 Light Tunnel Replacement: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Turn the projector, facing the back cable board towards you.

    • Using the Phillips #0 screwdriver, remove the (3) three 1.0 cm silver screws on the back panel.

    • Gently take off back cable panel.

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  3. InFocus Screenplay 4805 Light Tunnel Replacement: crwdns2935265:03crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 InFocus Screenplay 4805 Light Tunnel Replacement: crwdns2935265:03crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 InFocus Screenplay 4805 Light Tunnel Replacement: crwdns2935265:03crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Turn the projector so the front side with the lens is facing you.

    • Gently pry the both of the grey lens rings using the metal spudger.

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  5. InFocus Screenplay 4805 Light Tunnel Replacement: crwdns2935265:04crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Now that the screws have been removed, proceed with the removal of the outer panel.

    • Gently remove the front lens panel.

    • Be forewarned, the panel will resist. Be careful not to break the lens.

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    • Being careful not to pull the wires inside the projector, gently lift the top panel off the projector.

    • Rest the lid behind the projector so the insides are exposed and undamaged.

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  7. InFocus Screenplay 4805 Light Tunnel Replacement, Light Tunnel: crwdns2935265:06crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 InFocus Screenplay 4805 Light Tunnel Replacement, Light Tunnel: crwdns2935265:06crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 InFocus Screenplay 4805 Light Tunnel Replacement, Light Tunnel: crwdns2935265:06crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • With the lens facing you, remove the following screws:

    • Using the Phillips #1 screwdriver, remove the (3) three 1.25 cm gold screws holding the metal grate between the color wheel unit and the bulb.

    • Using the Phillips #1 screwdriver, remove the (2) two 2 cm gold screws on the right side of the lens house.

    • Using the Phillips #1 screwdriver and a bent driver, remove the (4) four 2 cm screws on the back of the lens house.

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  8. InFocus Screenplay 4805 Light Tunnel Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 InFocus Screenplay 4805 Light Tunnel Replacement: crwdns2935265:07crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 InFocus Screenplay 4805 Light Tunnel Replacement: crwdns2935265:07crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Using a Phillips #0 screwdriver remove the three 1 cm black screws from the lens house.

    • Remove the lens unit.

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  9. InFocus Screenplay 4805 Light Tunnel Replacement: crwdns2935265:08crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 InFocus Screenplay 4805 Light Tunnel Replacement: crwdns2935265:08crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 InFocus Screenplay 4805 Light Tunnel Replacement: crwdns2935265:08crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Using the Phillips #0 head, unscrew the four 1 cm black screws.

    • Remove the metal casings holding the tunnel in place.

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  10. InFocus Screenplay 4805 Light Tunnel Replacement: crwdns2935265:09crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 InFocus Screenplay 4805 Light Tunnel Replacement: crwdns2935265:09crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Using the Phillips #0 head, unscrew the black 0.5 cm screw on the bottom of the lens house.

    • Remove the light tunnel.

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To reassemble the device, follow these instructions in reverse order.

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Marilyn Urness

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Eastern Washington University, Team S2-G3, Crane Fall 2017 crwdns2935289:0Eastern Washington University, Team S2-G3, Crane Fall 2017crwdne2935289:0

EWU-CRANE-F17S2G3

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