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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
The unit does not work
normally.
No sound and/or no
picture.
The power cord is not connected or the plug is
not completely inserted.
Firmly connect the power cord.
The IMPEDANCE SELECTOR switch on the
rear panel is not fully set to the right or left
position.
Set the switch fully to the right or left position
when the unit is in the standby mode.
The internal microcomputer has been frozen by
an external electric shock (lightning, excessive
static electricity, etc.) or by a power supply with
low voltage.
Set the unit in the standby mode and disconnect
the AC power cord from the AC power outlet.
After about 30 seconds have passed, connect
the power and operate the unit again.
The speaker connections are not secure.
Incorrect input or output cable connections.
Connect the cables properly. If the problem
persists, the cables may be defective.
An appropriate input source has not been
selected.
Select an appropriate input source with INPUT
SELECTOR or TAPE/MD MON / EXT.
DECODER (or the input selector buttons).
Secure the connections.
SPEAKERS have not been set properly.
Set SPEAKERS corresponding to the speakers
in use to the ON position.
No picture.
There is no S VIDEO connection between this
unit and the TV monitor, although S video
signals are being input to this unit.
Connect the monitor’s “S” video input terminal
to this unit’s S VIDEO MONITOR OUT
terminal.
Only the speaker on one
side can be heard.
Incorrect cable connections.
Connect the cables properly. If the problem
persists, the cables may be defective.
Incorrect setting of BALANCE.
Adjust it to the appropriate position.
No sound from the effect
speakers.
The sound effect is off.
Press EFFECT to turn it on.
A Dolby Surround, Dolby Digital or DTS
decoding DSP program is being used with
material not encoded with Dolby Surround,
Dolby Digital or DTS.
Select another DSP program.
The sound is muted.
Set VOLUME to the “
m
” position, press
MUTE to cancel a mute and adjust the volume.
Play a source whose signals this unit can
reproduce.
Digital signals other than PCM audio and the
signals encoded with Dolby Digital or DTS
which this unit cannot reproduce are being input
to this unit by a CD-ROM, etc.
The sound suddenly
goes off.
The protection circuit has been activated
because of a short circuit, etc.
Set the unit in the standby mode and then turn
on to reset the protection circuit.
The SLEEP timer has functioned.
Turn on the power, and play the source again.
Refer to
page
APPENDIX
18
—
13, 14
21
16
21
22
—
14
—
41
16
22
26
34
The unit fails to turn on
when STANDBY/ON (or
POWER) is pressed, or
enters in the standby
mode soon after the
power has been turned
on.
18
The 96-kHz sampling 24-bit digital signals are
input to this unit.
24
0110V596(UCA)50-56_EN
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