Installation; Projection Distance And Screen Size - JVC LX-D700U Operating Instructions Manual

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LX-D700U/E.Q33E 6/3/98 3:48 PM Page 18

Installation

When the power cord is connected, this unit becomes powered and enters into sleep mode. Eyes can be
exposed by mistake to the light of high brightness resulting in impaired eyesight when a lamp is lit by inad-
vertently pressing a button during installation work of this unit, etc. Connection of the power cord is rec-
ommended to be performed after completing the installation of this unit and the connection of other com-
ponents mentioned above.

Projection Distance and Screen Size

The projection lens of this unit is a 1.3X manual zoom. At maximum, it is possible to project a screen size 1.3
times as large as the screen size at minimum.
The projection distance focus ranges between 3.2 ft. /1 m and 32.1 ft. / 9.8 m. Install the projector within this range.
If the four sides of the screen are distorted when projecting at the minimum projection distance, we recommend
you to install the projector slightly backward.
If the projector is used by hanging it from the ceiling, use the metal fittings particularly designed for the purpose.
Furthermore, it is necessary to bring the projector down from the ceiling for maintenance such as lamp replace-
ment, etc., to avoid any danger. We recommend you, therefore, to choose a suitable place under the ceiling to
hang the unit, from where you can easily bring it down.
Polarized screens cannot be used.
Aspect ratio is 4:3.
Maximum size
30
Minimum size
23
Projection distance (m)
1.0
About swing
A certain amount of vertical upward swing is provided. There is no horizontal
(left/right) swing.
The amount of swing is fixed.
The bottom of the screen should be level with the
extended centerline of the lens
(TELE - WIDE).
To avoid fire hazards and mechanical failures, do not place this unit in a
place exposed to:
• Water, moisture, and dust
• Vibration and abrupt impact
• Direct sunlight
• High and low temperatures:
Allowable working temperature and humidity: from 42°F/5°C to 104°F/40°C (20%~80%)
Allowable storage temperature and humidity: from 6°F/–10°C to 140°F/60°C (10%~90%)
When the sunlight or an illumination lamp directly lights the screen, the picture looks whitish making it difficult
to see. Under the circumstances, provide a curtain, etc., to shield it.
Trapezoidal distortion caused by tilting the front of the projector upward cannot be corrected; threfore, we rec-
ommend that the projector be positioned as perpendicular as possible in relation to the screen.
18
CAUTION
Examples of Size
30" Aspect ratio 4:3
60" Aspect ratio 4:3
39
60
79
80
90
100
103
30
45
60
63
70
77
80
1.3
2.0
2.6
6.7
3.0
3.3
3.4
Table-mounted
CAUTION
• Oily smoke and cigarette smoke
• Surface of soft articles such as rugs and beddings
CAUTION
Diagonal length 76 cm
(Length 18" /46 cm
Width 24" /
61 cm)
Diagonal length 152 cm
(Length 36" /91 cm
Width 48" / 122 cm)
131
140
150
183
200
300
100
108
115
140
155
229
4.3
4.6
4.9
6.0
6.6
9.8
Screen
Lens
centerline
Bottom of
screen

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