Canon D78-5232, Руководство по обслуживанию, Страница: 19 / 130

Part 1: General Information
1-9
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Automatic fan control system
When the temperature sensor detects a low temperature, the fan speed is reduced
automatically to suppress fan noise, achieving 37dB.
The temperature sensor is located near the air inlet to improve response and optimize
speed.
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Easy lamp replacement mechanism (Canon replacement lamp LV-LP13)
The user can replace the lamp easily.
There is a lamp replacement lid on the rear, and the lamp can be removed just by
removing two screws.
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User cleaning air filter mechanism
The user can replace the air filter easily.
If the air filter become clogged with dust particles, it may result in internal heat build
up. To prevent this, clean the filter regularly.
* Before cleaning the air filter, stop the projector and remove the power plug from the
outlet.
4.7 Replacement Lenses
• LV-IL01, ultra wide angle lens
• LV-IL02, wide angle zoom lens
• LV-IL03, long focus zoom lens
* The projection distance is approximate.
* The ultra wide angle lens (LV-IL01) is mainly designed for rear projection and
assumed to be used with "lens shift U/D ratio of 1:1" for ultra wide angle projection.
If the lens is shifted from the center, the image may be distorted.
LV-IL01 LV-IL02 LV-IL03
22.33 mm 34.3 – 48.02 mm 63.5 – 111.5 mm Focal length
F2.5 F2.5 – 3.06 F2.03 – 2.89
Aperture ratio
0.63 m 0.98 – 1.4 m 1.78 – 3.31 m 40 type
0.97 m 1.5 – 2.15 m 2.7 – 5.0 m
0
60 type
1.63 m 2.54 – 3.65 m 4.7 – 8.5 m 100 type
3.3 m 5.14 – 7.4 m 9.4 – 17.1 m 200 type
14.97 m 7.75 – 11.1 m 14.2 – 25.7 m 300 type
1:1 1:1 to 20:1 1:1 to 20:1 Lens shift
1.5 kg 1.7 kg 1.8 kg
Weight
170 mm 193 mm 217 mm
Length
ø130 mm ø99 mm ø99.5mm Outer diameter
Projection distance