Runco Home Theater Projection System Manuel D’Utilisation

Table 5-1 provides some general guidelines for troubleshooting problems you may 
encounter with the LS-12HBd. If the suggested solutions fail to resolve the problem or if 
you encounter an issue not described here, please contact Runco Technical Support. 

The projector does not turn 
on. 

• The LS-12HBd is not 

plugged in and switched 
on, or the AC outlet is not 
active. 

• The Dimension Digital 

Controller is not plugged in 
and switched on, or the 
AC outlet is not active. 

• The  remote  control 

batteries have run out. 

• The serial connection from 

the Dimension Digital 
Controller to the 
LS-12HBd is incorrect. 

• Ensure that the LS-12HBd 

is plugged in and switched 
on, and that the AC outlet 
is active. 

• Ensure that the Dimension 

Digital Controller is 
plugged in and switched 
on, and that the AC outlet 
is active. 

• Replace the batteries. 

• Ensure that the Pri. 

Display Control output 
from the Dimension Digital 
Controller is properly 
connected to the RS-232C 
input on the LS-12HBd 
(see Figure 3-9). 

The projector and Dimension 
Digital Controller are both on, 
but there is no picture and 
on-screen menus do not 
appear. 

• Lens  cover  is  on. 

• Lamp failed to ignite. 

• Faulty or incorrect video 

connection between the 
Dimension Digital 
Controller and the 
LS-12HBd. 

• Ensure that the lens cover 

is off. 

• Ensure that the lamp door 

is closed. If it is and the 
problem persists, replace 
the lamp. 

• Ensure that the HDMI 

output from the Dimension 
Digital Controller is 
properly connected to the 
PRIMARY input on the 
LS-12HBd (see Figure 
3-9). 

The display is on and menus 
appear, but there is no 
picture. 

• Incorrect source selection. 
• Source component is not 

turned on. 

• Source component is 

connected incorrectly or 
not at all. 

• Select the correct source. 
• Turn on the source 

component. 

• Check connections from 

source component to 
Dimension Digital 
Controller. 

A projected image from a 
DVD is split or otherwise 
scrambled. 

• DVD player is connected 

to the Component input 
and set to progressive 
scan mode. 

• Turn off progressive scan 

on the DVD player. Or, 
connect the DVD player to 
the HD1 or HD2 input. 

Image geometry is incorrect. 

• Incorrect aspect ratio 

selection. 

• Select a different aspect 

ratio.