User manual

12 DXRmkII series Owner’s Manual
Troubleshooting
English
Troubleshooting
*If any specific problem should persist, however, please contact your Yamaha dealer.
Symptom Possible causes Possible solution
Power does not turn on.
The power cord is not connected
properly.
Connect the power cord properly.
Power suddenly went off.
The protection system has operated,
shutting down the power supply.
Turn off the power, wait until the amplifier cools down,
and then turn on again.
No sound.
The cable is not connected properly. Connect to the INPUT jack properly.
The LINK MODE switch is set
incorrectly.
If you are using a single DXRmkII, set the LINK MODE
switch to MONO.
Sound is interrupted
suddenly.
The protection system has operated,
muting the output.
Wait until the amplifier cools down. If the device won’t
automatically reset itself, turn off the power, and then
on again.
Sound howls (feedback).
A microphone is directed toward the
speaker.
Keep the speaker away from the area where the
microphone picks up sound.
Sound is amplified too much.
Lower the volume of the input device and locate the
microphone more closely to the sound source.
The setting of the HPF switch is not
appropriate.
Set the HPF switch on 120Hz or 100Hz if you get
feedback in low frequency bands.
Each speaker sound
differs (if multiple
speakers are used).
Settings for each speaker differ.
Set the HPF and D-CONTOUR switches of each
speaker to the same positions.
Sound is distorted.
Input volume is excessive.
• Lower the volume of the input device to a point no
higher than where the LIMIT indicator lights
occasionally.
• If sound continues to be distorted even if you turn
down the volume to the minimum, set the MIC/LINE
switch to the LINE position (if the switch is set to
MIC).
Output volume is excessive.
Use the LEVEL control to lower the output level to a
point no higher than where the LIMIT indicator lights
occasionally.
The microphone volume is
too low.
The MIC/LINE switch is set to LINE. Set the MIC/LINE switch to the MIC position.
Low and high frequency
are unbalanced.
The output limiter is active.
Lower the input level or the output level to a point no
higher than where the LIMIT indicator lights
occasionally.