Runco Cl 420 Projector User Manual

Runco CL-420 Owner’s Operating Manual 11 
3.1 
Remote Control
To install batteries in the remote control: 
1. Press down the tab on the cover and pull 
the cover in the direction of the arrow.
 
 
 
 
2. Insert the included batteries. Ensure that 
the polarities correctly match the 
 and 
 markings inside the battery 
compartment. 
 
3. Insert the lower tab of the cover into the 
opening, and press down the cover until it 
clicks in place.
Notes on Batteries When installing batteries, make sure that the...

Installation
12 Runco CL-420 Owner’s Operating Manual
Notes on Remote Control 
Operation
The remote control can be used to control the projector within the ranges shown in Figure 
3-1. 
Figure 3-1. Available Range of the Remote Control
 For best results, hold the remote control within 23 feet (7m) of the back or top sensor 
and aligned within 30°.
 Do not drop the remote control or expose it to moisture or high temperature.
 The remote control may malfunction under a fluorescent lamp. If that occurs,...

Installation
Runco CL-420 Owner’s Operating Manual 13 
3.2 
Quick Setup
Table 3-1 gives a quick overview of the CL-420 installation process. The sections 
following this one provide detailed instructions.
Installation should be performed by a qualified custom video 
installation specialist.
Table 3-1. Installation Overview 
StepProcedureFor Details, refer to 
page...
1Choose a location for the projector14
2Connect signal sources to the projector20
3Connect external controller to RS-232 port (optional)25...

Installation
14 Runco CL-420 Owner’s Operating Manual
3.3 
Installation 
Considerations
Proper installation of your projector will ensure the quality of your display. Whether you are 
installing a projector temporarily or permanently, you should take the following into 
account to ensure your projector performs optimally.
Installation Type Choose the installation type that best suits your needs: front or rear screen, floor mount or 
inverted mount. 
Table 3-2 compares these various installation methods....

Installation
Runco CL-420 Owner’s Operating Manual 15 
Throw DistanceThrow distance is the distance measured from the front of the projector to the screen. 
This is an important calculation in any projector installation as it determines whether or not 
you have enough room to install your projector with a desired screen size and if your 
image will be the right size for your screen.
You can quickly estimate the throw distance by taking the width of the screen and 
multiplying it by the lens throw ratio;...

Installation
16 Runco CL-420 Owner’s Operating Manual
Vertical and Horizontal 
Position
Proper placement of the projector relative to the screen will yield a rectangular, 
perfectly-centered image that completely fills the screen. 
Ideally, the projector should be positioned perpendicular to the screen and in such a way 
that the lens center and screen center are aligned with each other, as shown in 
Figure 3-3.
Figure 3-3. Projector Placement
Vertical and Horizontal 
Lens 
Shift
If it is not possible to...

Installation
Runco CL-420 Owner’s Operating Manual 17 
Figure 3-4. Vertical Lens Shift
1. With no vertical or horizontal lens shift, the lens center and 
screen center are aligned with each other.
2. Vertical shift limits are percentages of the screen height. 
Horizontal shift limits are percentages of the screen width.
3. Vertical offset figures apply to ceiling mount 
configurations. For floor installations (where the projector is 
upright), reverse the up/down vertical offset percentages. 
4. Using...

Installation
18 Runco CL-420 Owner’s Operating Manual
Figure 3-5. Horizontal Lens Shift
Adjusting the Projection 
Angle
If the screen is significantly higher or lower than the projector, you can also tilt the 
projector at a slight angle. In a ceiling installation, you do this by adjusting the ceiling 
mount. For a floor installation, turn the four adjustable feet on the bottom of the projector 
to adjust the projector height and/or projection angle.
If you do this, you may need to shift the image or...

Installation
Runco CL-420 Owner’s Operating Manual 19 
MountingThere are several methods for mounting the projector. Depending on your chosen 
installation, one method may be more suitable than another. 
Floor Mounting: In typical front and rear screen installations the projector can be 
mounted to a secure and level surface, such as a table or cart. Carts are useful when 
moving a projector during a presentation or from site to site. If possible, lock the wheels 
when it’s in position to prevent it from...

Installation
20 Runco CL-420 Owner’s Operating Manual
3.4 
Connections to the 
CL-420
Proceed as follows to connect the CL-420 to your video sources, external controller(s) -- if 
present -- and AC power. 
When connecting your equipment:
 Turn off all equipment before making any connections.
 Use the correct signal cables for each source.
 Ensure that the cables are securely connected. Tighten the thumbscrews on 
connectors that have them. 
Connector Panel AccessTo access the connector panel, pull...