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DM-MD64X64/DM-MD128X128: DigitalMedia Switchers
Supplemental Guide – DOC. 7318F
Troubleshooting
The following table provides troubleshooting information. If further assistance is required,
contact a Crestron customer service representative.
DM-MD64X64 and DM-MD128X128 Troubleshooting
TROUBLE
POSSIBLE CAUSE(S)
CORRECTIVE ACTION
The audio or video is
distorted.
The source does not match
the EDID capabilities of the
destination.
Check the EDID capabilities of the
devices in the system.
Video loss occurs.
Various conditions may cause
video loss.
Use the DM switcher web
interface to determine the cause,
and then correct the problem
accordingly.
Power supply LED 1, 2, or 3
on the front of the unit is not
lit.
The power connection is
faulty.
Do the following as necessary:
•
Check the power connection.
•
Reseat the power supply.*
The power supply FAULT
LED on the front of the unit
flashes red.
A fault exists with a power
supply.
Do the following as necessary:
•
Check the power connection.
•
Reseat the power supply.*
•
If the problem persists,
replace the power supply.
†
The power supply OK LED
on the rear of the unit is not
lit.
The power connection is
faulty.
Do the following as necessary:
•
Check the power connection.
•
Reseat the power supply.*
•
If the problem persists,
replace the power supply.
†
The power supply ! LED on
the rear of the unit lights
amber.
A fault exists with the power
supply due to any of the
following conditions: under
voltage, over voltage, over
temperature, fan failure
conditions, or over current
protection of standby voltage.
Do the following as necessary:
•
Cycle ac power.
•
Eliminate the cause of the
failure (for example, under
voltage, over voltage, or fan
failure) as appropriate.
If the problem persists, replace
the power supply.
†
The DM link status LED on a
fiber input/output blade
flashes green once a
second.
The input/output port cannot
establish a link to the
connected device.
Check the cable connection to
the DM switcher and the
connected device.
* Before removing a power supply, disconnect the ac power cord from the corresponding power inlet. Connect the
ac power cord to the corresponding power inlet after the power supply is installed.
†
Although the DM-MD64X64 and DM-MD128X128 continue to operate if a single power supply fails, it is
recommended that the failed power supply be replaced as soon as possible to restore power supply redundancy.
