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Maintenance and Troubleshooting
98 D-73d Series Installation/Operation Manual
PRE
L
IMINAR
Y
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.
Troubleshooting 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
Left Polarizer* Left Polarizer*
* viewed from the side facing the projector
3D Glasses
L R
L R
Same Angle of
Polarization
(light passes)
Different Angles
of Polarization
(light does
not pass)
➤
Table 5-1. Troubleshooting Chart
Symptom Possible Cause(s) Solution
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).