Runco D-73D Manual Do Utilizador

Identifying the Left and Right Polarizers: Although the left and right polarizers have 
very different optical characteristics, they appear to be identical. As a result, once you 
remove them from the projector it may be difficult to tell them apart. Use the following 
technique to verify which one is which:

1. Place the polarizer on a clean, smooth, flat surface with the side that faces the 

projector facing up.

2. Hold a pair of 3D glasses above the polarizer as shown here: 

3. If the right lens on the glasses turns black when it is above the polarizer, this tells you 

that the polarizer came from the left-eye optical engine on the projector.

Table 5-1 provides some general guidelines for troubleshooting problems you may 
encounter with the D-73d Series LED 3-D Home Theater Projection System. If the 
suggested solutions fail to resolve the problem or if you encounter an issue not described 
here, please contact your Runco dealer or Runco Technical Support.  

572-2479-00REV00

572-2479-00REV00

Same Angle of
Polarization
(light passes)

Different Angles
of Polarization
(light does
not pass)

➤

The projector does not turn 
on. 

• The projector is not 

plugged in or the AC outlet 
is not active. 

• The Primary DHD Controller 

is not plugged in or the AC 
outlet is not active. 

• The remote control 

batteries have run out. 

• Ensure that the projector is 

plugged in and that the AC 
outlet is active. 

• Ensure that the Primary 

DHD Controller is plugged 
in and that the AC outlet is 
active. 

• Replace the batteries. 

The “left-eye” optical engine 
does not turn on or respond to 
user commands. The vacuum 
fluorescent display on the Pri-
mary DHD Controller front 
panel displays the following 
message:

Primary Display Error
Communication Failure

• The serial connection from 

the Primary DHD Controller 
to the “left-eye” optical 
engine on the display is 
incorrect or the cable is 
faulty. 

• Ensure that the 

Display Control (RS-232) 
output from the Primary 
DHD Controller is properly 
connected to the display 
(see Figure 3-14).