Yamaha DSR-100PRO Owner's Manual download pdf (Page 11)

DSR112/DSR115/DSR215/DSR118W Owner’s Manual 11

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.

The power cord cannot

be disconnected.

You tried to disconnect the power

cord without pressing the latch

button.

The DSR series feature a V-LOCK power cord.

Press the latch button on the plug to disconnect

the power cord.

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.

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.

Turn the HPF switch on (O) 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.

• Set the POLARITY switch of each speaker to

the same position (DSR118W).

Sound is distorted

Input volume is excessive.

• Lower the volume level of the input device so

that the PEAK indicator sometimes lights.

• If sound continues to be distorted even if you

turn down the volume to the minimum, set the

MIC/LINE switch to the LINE (N) position (if the

switch is set to MIC).

Output volume is excessive.

Lower the output level with the LEVEL control so

that the LIMIT indicator sometimes lights.

The microphone

volume is too low.

The MIC/LINE switch is set to LINE. Set the MIC/LINE switch to the MIC (O) position.

A microphone that needs phantom

power is being used.

DSR series products do not provide phantom

power.

Change your microphone to a dynamic

microphone, use a battery, or provide external

phantom power.

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Yamaha DSR-100PRO Owner's Manual Page 11

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