Yamaha YST-M20DSP Owner's Manual - Page 6
Troubleshooting, FAULT, CAUSE - problem
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Troubleshooting If your speakers fail to operate normally, check the following table. It lists common operating errors and simple measures which you can take to correct the problem. If it cannot be corrected, or the symptom is not listed, disconnect the speaker's AC adaptor and contact your authorized YAMAHA dealer or service center for help. FAULT No sound comes from one, or both, of the speakers. No sound comes from the unit connected to the OUTPUT (ADJ.VOL.) jack on the rear panel. Sound is distorted. Intermittent noise. Noise. Noise is heard when the power is turned on. No sense of sonic expansion. (YST-M20DSP only) CAUSE • The AC adaptor is not properly plugged in to the wall outlet. • The POWER switch is turned OFF. • Connections are faulty or incomplete. • The volume is set to minimum. • The signal being input is too small. • Headphones are connected. (No sound comes from the OUTPUT jack when headphones are connected.) • The signal being input is too large. • DSP is turned on when the volume level is low, or when there is no signal. (YST-M20DSP only) • Connections are faulty or incomplete. • The power cord of this unit is connected to another unit's SWITCHED AC OUTLET. • DSP ON/OFF is turned OFF. CURE • Insert the AC adaptor firmly into the wall outlet. • Turn ON the POWER switch (the indicator lights). • Make the connections again, firmly, or use a different cable. • Turn VOLUME control to the right to increase the volume. • Turn the ADJ.VOL. knob to the right to increase the volume. • Turn up the volume on the connected component. • Disconnect the headphones. • Turn down the volume on the connected component. • Turn OFF the DSP, or turn VOLUME to the right to increase the volume. • Make the connections again, firmly, or use a different cable. • Connect the power cord to an UNSWITCHED AC OUTLET. Make sure to use the POWER switch on this unit to turn the power on and off. • Set DSP ON/OFF to ON. • Even if the POWER switch is set to off, a small amount of sound may be heard from the headphones if the VOLUME control is set to MAX. 6