8x8 DigitalMedia™ Switcher
Crestron
DM-MD8X8
Problem Solving
Troubleshooting
The following table provides corrective action for possible trouble situations. If
further assistance is required, please contact a Crestron customer service
representative.
DM-MD8X8 Troubleshooting
TROUBLE
POSSIBLE CAUSE(S)
CORRECTIVE ACTION
Incorrect Audio or
Video displayed.
Audio is routed
separately from video.
Reroute audio together with
video.
Distorted audio or
video.
Source does not match
capabilities of
destination.
Use Crestron Toolbox to
manage EDID capabilities of
devices in the system.
Disconnect displays that may
not be used with source during
run time and repeat HDCP
check.
Violation of HDCP rules
(number of display
devices exceeds the
source’s number of
allowed displays).
Replace source device with a
device that allows more
displays to be connected.
HDCP Check
Failure Message
during
commissioning.
Violation of HDCP rules
(device depth exceeds
allowable depth
specification).
Reconfigure signal path to
remove midpoint devices that
increase overall device depth.
Bandwidth Test
Failure Message
during
commissioning.
Poor cable connection to
a DM-RMC-100 (on the
“D” line).
Verify that cable is not crimped
or damaged.
DM-DR Repeater
or DM-RMC-100
Room Controller do
not report to DM
Switcher.
Poor cable connection to
the DM-DR or
DM-RMC-100 (on the “D”
line).
Verify that cable is not crimped
or damaged.
No audio output
from RCA
connectors on
DMC-HD
Source is not providing a
2-channel audio signal.
Replace DMC-HD card with
DMC-HD-DSP to provide
2-channel stereo downmix
from audio source.
Loss of
functionality due to
electrostatic
discharge.
Improper grounding.
Check that all ground
connections have been made
properly.
Check Network Wiring
Use the Right Wire
In order to ensure optimum performance over the full range of your installation
topology, Crestron Certified Wire and only Crestron Certified Wire may be used.
Failure to do so may incur additional charges if support is required to identify
performance deficiencies because of using improper wire.
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8x8 DigitalMedia™ Switcher: DM-MD8X8
Operations Guide – DOC. 6755A
