4
Introduction
1.2 Important safety instruction - For Instant Stack feature (continued)
NOTICE ► Instant Stack is a feature that brings you a very convenient way to 
pile up or line up two projectors.  The images projected from the two projectors 
may not be able to be nely superimposed on screen depending on the position 
or environmental of the projectors.  Especially, if the screen is curved or 
distorted or unlevel, the images will not be nely superimposed.  
• Just after turning on, the projected images will not be so stable since the 
temperature inside of the projectors is rising.  Wait 20 minutes or more after 
turning on, before you start to adjust images to superimpose.  
• The images may be shifted by temperature change, vibration and shock of 
being hit by something.  When you use Instant Stack, install them in stable 
environment.  If the images are shifted, adjust them again. (
9, 12, 15
)  
• The images may be shifted with time by the tension or weight of connected 
cables.  Pay attention to arrangement of cables not to place burden to the 
projectors.  
• It may be happened to make a mechanical noise and degrade image quality 
by sympathetic vibration with the piled up projectors if the volume of built-in 
speakers is set much higher.  In this case, check the volume setting on both 
projectors, and lower the volume to remove such phenomena or place the 
projectors side by side.  
• With RS-232C connection between two projectors, a projector as Main can 
control the other as Sub, which is a feature called as Intellectual Stack. (
11
)  
If you use the feature, you cannot use RS-232C communication to control 
projectors, since RS-232C function is occupied with Intellectual Stack.  If you 
wish to control projectors, use LAN connection that can be connected with 
one of the projectors.  
• When you use Intellectual Stack, the operations or setting of some functions 
are restricted. Refer to this manual for detail. (
34
)   
WARNING ► Be sure to storage the pocket caps reliably and safely inside 
of the lens adjuster door to prevent children and pets from swallowing the caps, 
when taking the caps from the in stack pockets. (
3
)  If they swallow the caps, 
consult a physician immediately for emergency treatment.
CAUTION ► Be careful not to injure your nail and nger to remove the 
pocket caps. (
3
)