NEC DT20 User Manual
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Contents
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E-52Maintenance■ Fault ProtectionYour projector is provided with internal protection circuits for preventing fire and damage tointernal components due to abnormal temperature.● When the LAMP/COVER LED is blinking:❍ Action1. Disconnect the power plug from the power outlet.2. Correctly install the air filter. For details, see “Cleaning the Air Filter” on page E-56.3. Correctly install the lamp unit cover. For details, see “Lamp Unit Replacement”on page E-54.● When the temperature LED is blinking or on.❍ Action1. Disconnect the power cord from the power outlet.2. Check the following and take corrective actions.* When the TEMP LED is OFF, your projector is working properly.* Replace the lamp at the same time when the LAMP/COVER LED is on.For details on how to replace the lamp, see page E-54.* A blinking TEMP LED is a warning that the temperature is too high. If the operatingenvironment improves within 10 seconds after the LED starts blinking, the warning willstop. (When the TEMP LED goes out, normal operation continues.)If the TEMP LED blinks for more than 10 seconds and the operating status does notchange, the LED stops blinking and stays on and the lamp turns off.Use your projector within an ambient temperature of0°C to 35°C (32°F to 95°F).Is the ambient temperaturemore than 35°C(95°F)?Are any vent holes blocked?Is the air filter clogged?A probable cause is aninternal circuit problem. Ask your dealer for repair.Clean the air filter.See “Cleaning the Air Filter” on page E-56.Place your projector away from walls and other objects.See “Do not block the air vents” on page E-4. |
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