APPENDIX

TROUBLESHOOTING

If the unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple measures suggested. If it cannot be corrected, or if the fault is not listed in the SYMPTOM column, disconnect the power cord and contact your authorized YAMAHA dealer or service center.

General

SYMPTOM

CAUSE

REMEDY

Refer to

page

 

 

 

 

 

 

 

The unit fails to turn on

The power cord is not connected or the plug is

Firmly connect the power cord.

16

when STANDBY/ON is

not completely inserted.

 

 

pressed, or enters in the

 

 

 

The IMPEDANCE SELECTOR switch on the

Set the switch fully to the right or left position

16

standby mode soon after

rear panel is not fully set to the right or left

when the unit is in the standby mode.

 

the power has been

 

position.

 

 

turned on.

 

 

 

 

 

 

 

 

 

The unit does not work

The internal microcomputer has been frozen by

Set the unit in the standby mode and disconnect

normally.

an external electric shock (lightning, excessive

the AC power cord from the AC power outlet.

 

 

static electricity, etc.) or by a power supply with

After about 30 seconds have passed, connect

 

 

low voltage.

the power and operate the unit again.

 

 

 

 

 

No sound and/or no

Incorrect input or output cable connections.

Connect the cables properly. If the problem

12, 13

picture.

 

persists, the cables may be defective.

 

 

 

 

 

 

An appropriate input source has not been

Select an appropriate input source with INPUT

19

 

selected.

or TAPE/MD MON / EXT. DECODER (or the

 

 

 

input selector buttons).

 

 

 

 

 

 

The speaker connections are not secure.

Secure the connections.

14

 

 

 

 

 

SPEAKERS have not been set properly.

Set SPEAKERS corresponding to the speakers

19

 

 

in use to the ON position.

 

 

 

 

 

 

The sound is muted.

Set VOLUME to the “ m” position, press

20

 

 

MUTE to cancel a mute and adjust the volume.

 

 

 

 

 

 

Digital signals other than PCM audio and the

Play a source whose signals this unit can

 

signals encoded with Dolby Digital which this

reproduce.

 

 

unit cannot reproduce are being input to this unit

 

 

 

by a CD-ROM, etc.

 

 

 

 

 

 

The sound suddenly

The protection circuit has been activated

Set the unit in the standby mode and then turn

goes off.

because of a short circuit, etc.

on to reset the protection circuit.

 

 

 

 

 

 

The SLEEP timer has functioned.

Turn on the power, and play the source again.

37

 

 

 

 

Only the speaker on one

Incorrect cable connections.

Connect the cables properly. If the problem

14

side can be heard.

 

persists, the cables may be defective.

 

 

 

 

 

 

Incorrect setting of BALANCE.

Adjust it to the appropriate position.

20

 

 

 

 

No sound from the effect

The sound effect is off.

Press EFFECT to turn it on.

22

speakers.

 

 

 

A Dolby Surround or Dolby Digital decoding

Select another DSP program.

25

 

 

DSP program is being used with material not

 

 

 

encoded with Dolby Surround or Dolby Digital.

 

 

 

 

 

 

No sound from the

The sound output level of the center speaker is

Raise the level of the center speaker.

35

center speaker.

set to minimum.

 

 

 

 

 

 

 

“CENTER SP” in the SET MENU is set to the

Select the LRG or SML position.

32

 

NONE position.

 

 

 

 

 

 

 

Incorrect DSP program is selected.

Select the appropriate program.

23, 24, 25

 

 

 

 

 

The source encoded with Dolby Digital does not

 

 

have a center channel signal.

 

 

No sound from the rear

The output level of the rear speakers is set to

Raise the output level of the rear speakers.

35

speakers.

minimum.

 

 

 

 

 

 

 

A monaural source is being played with the PRO

Select another DSP program suitable for the

25

 

LOGIC/Normal or PRO LOGIC/ENHANCED

monaural source.

 

 

program.

 

 

 

 

 

 

APPENDIX

English

45