Hitachi LP-TW4001 - Page 144

144
Troubleshooting
Phenomenon Cases not involving a machine defect
Reference
page
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The FREEZE function is working.
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Color settings are not correctly adjusted.
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COLOR SPACE setting is not suitable.
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The brightness and/or contrast are adjusted to an
extremely low level.
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The projector is operating in LONG LIFE mode or
WHISPER mode.
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The light source is approaching the end of its product
lifetime.
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When the internal temperature is high (even if the
ambient temperature is lower than 35°C), the brightness
of light source might be reduced automatically.
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When the vertical frequency of the input signal is low,
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Either the focus and/or horizontal phase settings are
not properly adjusted.
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The projection window is dirty or misty.
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134
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Phenomena that may be easy to be mistaken for machine defects (continued)