Appendix - Yamaha MRX7-D Owner's Manual

Appendix


Troubleshooting
The Yamaha Pro Audio website provides a FAQ (a list of frequently asked questions, with answers).
http://www.yamahaproaudio.com/
Symptom
The device does not turn on, or
the panel LEDs do not light up.
Can't exchange data between the
MRX7-D and MTX-MRX Editor
(MRX7-D is not shown in MTX-
MRX Editor).
No audio input is present.
No audio is output.
The panel controls don't work.
Can't operate the DCP.
The DCP's LEDs are dim.
[YDIF] indicator does not light.
Can't play audio files from the SD
memory card.
SD memory card is not detected.
Connect the power cord properly.
Make sure that the power switch is turned on.
If the power still does not turn on, contact your Yamaha dealer.
Is the Dante connector of the MRX7-D correctly connected to the computer?
Have you specified the correct UNIT ID using the [UNIT ID] rotary switch and DIP switches 1 and 2
on the rear panel? Could the UNIT ID be conflicting with another device?
Set the rear panel DIP switch 6 (IP SETTING) to "UNIT ID" so that the IP address will be automati-
cally assigned according to the UNIT ID.
Connect the cable properly.
Make sure that a signal from an external device is being input.
Set the gain of the internal head amplifier or external head amplifier to an appropriate level.
In the "EXT. I/O" screen of MTX-MRX Editor, check whether the audio routing between devices is
set correctly.
Is the optional I/O card installed correctly?
In the "Word Clock" dialog box of MTX-MRX Editor, is the word clock set correctly?
Could the output level be lowered?
In MTX-MRX Editor, could the channel's ON button be turned off?
Is the signal routing specified correctly?
Have the other settings in MTX-MRX Editor been made correctly?
Is the optional I/O card installed correctly?
Could rear panel DIP switch 5 (PANEL LOCK) be set to "LOCK"? Change this to "UNLOCK" to
defeat the panel lock function. If you are still unable to operate the device, contact your Yamaha
dealer.
Are you using an appropriate cable, and is the MRX7-D correctly connected to the DCP?
Did you power-cycle the MRX7-D after connecting the DCP? The DCP will be detected when the
power is turned on.
Did you assign the DCP's ID and parameters correctly in MTX-MRX Editor? Also, did you specify a
DCP library item in the "Preset" dialog box as the preset to be recalled?
Is termination turned on for the last-connected DCP?
Could nine or more DCP units be connected? A maximum of eight DCP units can be connected to
one MRX7-D.
Could the total cable length from the MRX7-D to the last DCP be exceeding 200 meters?
In the "Preset" dialog box of MTX-MRX Editor, have you specified the DCP library that you created?
Also, did you execute a preset recall after specifying this? The settings of the "Preset" dialog box will
not be applied until you execute a preset recall.
Did you set the DCP's LED brightness appropriately in MTX-MRX Editor?
Did you use an appropriate cable to make proper YDIF connections between the MRX7-D and other
devices in the MTX/MRX system? Also, is the power to the YDIF-connected devices turned on?
Is the SD memory card recognized correctly? Make sure that the front panel [SD/ACT] indicator is lit
or flashing.
In MTX-MRX Editor, have you made the correct settings for SD memory card playback and for the
scheduler?
Are playable audio files saved in the specified folder?
Are you using an SD memory card type and format that is supported? Refer to the "Specifications"
page, and use a supported card.
Is the SD memory card inserted correctly? Turn off the power of the MRX7-D, re-insert the card, and
then turn the power on again. If the [SD/ACT] indicator does not light and the card is not detected, it
may be that the card is damaged.
Possible cause, and action
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MRX7-D Owner's Manual