User manual

Maintenance and Troubleshooting
Runco CL-410 and CL-420 Owner’s Operating Manual 51
5.7
Troubleshooting Tips
Table 5-1 provides some general guidelines for troubleshooting problems you may
encounter with the CL-410/CL-420. If you encounter an issue not described here, please
contact your Runco dealer or Runco Technical Support.
Table 5-1. Troubleshooting Chart
Symptom Possible Cause(s) Solution
The projector does not turn
on after initial installation.
• The CL-410/CL-420 is not
plugged in or the AC outlet
is not active.
•The remote control
batteries have run out.
• Ensure that the
CL-410/CL-420 is plugged
in and that the AC outlet is
active.
• Replace the batteries.
The projector is on, but there
is no video image on-screen.
• Incorrect source selection.
• Source component is not
turned on.
• Select the correct source.
• Turn on the source
component.
A projected image from a
DVD is split or otherwise
scrambled.
• DVD player is set to
progressive scan mode.
• Turn off progressive scan
on the DVD player.
• Connect the DVD player to
the HD/RGB 1 or
HD/RGB 2 input.
Image is too bright and/or
lacks definition in the bright
areas of the image.
• Contrast is set too high. • Lower the contrast setting.
Image appears “washed out”
and/or dark areas appear too
bright.
• Brightness is set too high. • Lower the brightness
setting.
Colors in the image are
swapped; for example, reds
appear blue or vice versa.
•The Red/Pr, Green/Y or
Blue/Pb outputs from the
source are connected to
the wrong inputs on the
CL-410/CL-420.
• Ensure that the source
outputs are connected to
the correct
CL-410/CL-420 input.
RGB-HD images appear
“noisy.”
• Clock and Phase settings
need adjustment.
• Manually adjust Clock and
Phase settings, or perform
an Auto-Tune (refer to
HD/RGB Adjust on
page 40).
The projector will not turn
back on after it was powered
down, or the image
disappears during operation.
• The projector will not turn
on for two minutes after
power-down, to protect
the lamp.
• The lamp has failed or was
improperly installed.
• Wait until the cooling fan
stops.
• Replace or re-install the
lamp.