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I removed my SIM2 HT200 projector lamp and ordered a new one, which I have. Unfortunately, I did not properly mark which of the two projector wires is the ''positive'' wire. I suspect that although it is plugged into AC the wires seem to run through a ''diode'' that may be a DC converter. I do not have a testing gauge. One wire is longer than the other. Can you tell me if the long wire or the short wire is the positive post wire? Or do you suggest I run to radio shack and get a testing gauge?Thanks,TomChanhassen, MN

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I tested the wires and discovered that the short wire is the positive wire. The DC voltage is extremely high and burned out the first "cheap" meter I used. Be careful not to tighten the positive wire on with the furnished nut to much, as it could cause ceramic to break and the bulb to lose life.
Rtom

Posted on Dec 14, 2008

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Description of product:
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Supplied equipment: gloves, filter
Lamplife (hours): 5000
Performance (W): 100
Lamp type: UHP

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1. Turn off the projector and unplug it. Let the projector cool for at least 45 minutes. The hot lamp can burn you!
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3. Use a proper screwdriver to loosen the screws which secure the lamp inside the projector.
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2. Find the lamp cover on the projector and remove it by loosening the screws on it.
3. Use a proper screwdriver to loosen the screws which secure the lamp inside the projector.
4. Grasp the lamp by its wire handrail and carefully remove it.
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6. Remove all impurities from the lamp module. If it is damaged, or if the connectors are oxidized, order a new complete module - you will thereby prevent and potential damage to the lamp or to the projector!
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8. If one of the connector parts is firmly fastened to the lamp, it will be necessary to disconnect it. Plug the cable eye to the end of the connector. The cable eye is included with the lamp.
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11. Install the new lamp according to the aforementioned instructions in Numbers 1 to 5 in the reverse order.
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Product websites:
www.hitachi.com

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