Yamaha MCR-640 Manuel télécharger pdf (Page 30)

TROUBLESHOOTING

26 En

ADDITIONAL INFORMATION

Refer to the table below when this system does not function properly. If the problem you are experiencing is not listed

below or if the instruction below does not help, turn off this system, disconnect the power cable, and contact the nearest

authorized Yamaha dealer or service center.

■ General

TROUBLESHOOTING

Receiver (R-840)

Problem Cause Remedy

See

page

The receiver fails to

turn on or enters

standby mode soon

after the power is

turned on.

The power cable is not connected or the

plug is not completely inserted.

Connect the power cable firmly.

The receiver has been exposed to a strong

external electric shock (such as lightning

or strong static electricity).

Set the receiver to standby mode, disconnect the

power cable, plug it back in after 30 seconds and

then use it normally.

—

The cable is short-circuited and the

protection circuity has been activated.

Make sure that all speaker wire connections on the

receiver and on all speakers are secure and that the

wire for each connection does not touch anything

other than its respective connection.

The internal temperature is too high, the

protection circuity has been activated.

Wait about 1 hour for the receiver to cool down and

then turn it back on.

No sound Incorrect input or output cable

connections.

Connect the cables properly. If the problem persists,

the cables may be defective.

No appropriate input source has been

selected.

Select an appropriate input source with the INPUT

selector on the front panel (or the input selection

keys on the remote control).

—

Speaker connections are not secure. Secure the connections.

The volume is turned down. Turn up the volume.

—

The sound is muted. Press MUTE or VOLUME +/– to resume audio

output and then adjust the volume.

Signals the receiver cannot reproduce are

being input from a source component,

such as a CD-ROM.

Play a source whose signals can be reproduced by the

receiver.

—

The sound suddenly

goes off.

The timer has turned off the receiver. Turn on the receiver, and play the source again.

—

Sound is heard from

the speaker on one

side only.

Cables are not connected properly. Connect the cables properly. If the problem persists,

the cables may be defective.

There is noise

interference from

digital or radio

frequency

equipment.

The receiver is too close to the digital or

high-frequency equipment.

Move the receiver further away from such

equipment.

—

The sound is

distorted.

The volume level is too high. Adjust the volume level.

“CHK SP WIRE”

appears on the

display.

Speaker cables are short-circuited. Make sure speaker cables are connected correctly.

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Yamaha MCR-640 Manuel Page 30

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