Arris DCX525 - Audio and Video Display Problems; Graphics and Caption Display Issues

Troubleshooting
Problem Possible Solution
There is no audio
from the center
and/or surround
speakers of a home
theater receiver
connected to the DCX
set-top
Not all programs feature full Dolby Digital [5.1] or Dolby Digital Plus [7.1] surround
sound. In some cases, the programs may only contain left and right stereo audio.
• Verify that the home theater receiver is set to a surround sound audio mode
(Dolby Pro Logic®, Dolby Pro Logic II®, Dolby Pro Logic IIx®).
• Verify that the receiver is properly configured to work with all connected
speakers.
There is no video on
the TV screen
• Verify that the TV is powered on and set to the appropriate input source for the
DCX set-top.
• Verify that the DCX set-top is powered on and tuned to an authorized cable
channel.
• Verify that all video cables between the DCX set-top and the TV are firmly
connected.
• Verify that the coaxial cable feed is firmly connected to the DCX set-top and the
wall jack.
• If the DCX set-top video output is connected to a home theater unit, verify that
the home theater unit is powered on and set to the appropriate input source.
• If the DCX set-top video output is connected to a TV through an HDMI
connection, power off the TV and then power off the DCX set-top. Wait one
second and then power on the devices.
• Not all HDTVs can display every output format (1080p60, 1080p30, 1080p24,
1080i, 720p, 480p, or 480i) available on the DCX set-top. To select a different
format:
1. Ensure that your DCX set-top is plugged into a power outlet and is turned off.
2. Press the MENU key on the remote control. Your settings are displayed on the
DCX set-top front panel display.
3. Press the ▲ and ▼ keys to display the HDMI OUTPUT setting.
4. Press the ► key to cycle through the available output formats until a picture
displays on the TV.
No graphics or
program guides
appear on the TV
screen
On-screen graphics and captions may still be overlaid by your TV, if enabled.
Alternatively, use HDMI video instead.
No closed captions
display
Verify on the User Settings menu that closed captions are enabled on the DCX
set-top.
• Verify that closed captions are enabled on the TV.
Note: Closed captioning may not be available on the current program.
All-Digital, High-Definition Set-top DCX525 • User Guide 32
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