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Remove 2 screws retaining the lamp cover.
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Lift the lamp cover from the front and remove.
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Peel off the transparent adhesive film and put it aside with the lamp cover.
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Lift up the wire handle then undo the lamp retaining screw. This is a captive screw which remains in the lamp assembly.
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Lift out the lamp, holding it only by the wire handle. Place the lamp in a clean polythene bag and set it aside in a safe place.
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Remove one screw from under the lamp cover.
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Turn the projector over and remove 5 screws from the bottom. These are quite deeply recessed and you will need a screwdriver at least 6cm long.
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Turn the projector the right way up again and work around the top cover with a spudger to release it from its clips. Lift the top cover off.
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crwdns2935201:0crwdne2935201:0 crwdns2935203:0crwdne2935203:0
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Remove 5 screws securing the metal shield.
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Remove 3 screws from the back of the projector.
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Remove 8 binding posts from the D-type connectors, using a 5mm socket.
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The plastic back panel can now be lifted out.
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Lift off the metal shield, gently releasing the clips on the sides and the front, and easing it over the sockets at the back.
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Gently pull the ribbon cable by the optical assembly out of its socket.
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Disconnect 7 other cables.
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You can now lift off and put aside the main logic board by easing it upwards from the front. When you get it off you will see that it was retained by 2 connectors: an edge connector on the optical assembly and a pin block to the right connecting it to the power supply board below.
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Remove 3 self-tapping screws which fasten the metal plate to plastic posts below. You will need a long screwdriver and it will help greatly if it's magnetic. The rear screw on the right also retains an earthing lead.
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Remove a machine screw and its earthing lead.
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Lift off the metal plate.
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crwdns2935201:0crwdne2935201:0 crwdns2935203:0crwdne2935203:0
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Remove 3 screws retaining the optical assembly. Note that only one of the two screws on the right should be removed.
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Gently lift out the optical assembly, disengaging the lens from the front panel.
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crwdns2935201:0crwdne2935201:0 crwdns2935203:0crwdne2935203:0
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Remove 4 screws and lift off the heat sink and DLP chip.
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Inspect the DLP for any dust. You can wipe it gently with a cotton wool bud moistened with isopropyl alcohol.
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Follow the light path and inspect carefully for dust or contamination. These pictures show the optical assembly upside down.
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Light enters from the lamp on the right, facing the screen (on the left in this picture since it's upside down).
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The light then passes through the colour wheel ...
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... and into the collimator.
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The light enters the imaging chamber on the right (the left in the picture, as again, it's upside down).
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The light is reflected off a mirror in the floor of the chamber, focussing it onto the DLP chip, which is located in the aperture we're looking through.
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From the DLP chip, the light is reflected through the projection lens and hence on to the screen.
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crwdns2944067:03crwdne2944067:0
muy buenas tengo el proyector es200u muy similar a este…
tengo un problema, lo he desarmado y tengo una pieza que no se donde va…. ¿me puedes ayudar? mi correo es discobolero@gmail.com
Por favor, publique una foto de la pieza y tal vez podamos ayudarlo.
Hola, me haria falta un chip gráfico para un proyector Mitsubishi modeloEW230U-ST donde lo puedo conseguir a buen precio?
Un saludo.