Troubleshooting – Yamaha RX-V757 User Manual
Page 88
TROUBLESHOOTING
86
Refer to the chart below when this unit does not function properly. If the problem you are experiencing is not listed below
or if the instruction below does not help, set this unit to the standby mode, disconnect the power cord, and contact the
nearest authorized YAMAHA dealer or service center.
■
General
TROUBLESHOOTING
Problem
Cause
Remedy
Refer to
page
This unit fails to turn
on when STANDBY/
ON (or SYSTEM
POWER) is pressed,
or enters the standby
mode soon after the
power has been
turned on.
The power cord is not connected or the
plug is not completely inserted.
Connect the power cord firmly.
—
The impedance setting is incorrect.
Set the impedance to match your speakers.
67
The protection circuitry has been
activated.
Make sure all speaker wire connections on this unit
and on all speakers are secure and that the wire for
each connection does not touch anything other than
its respective connection.
11-14
This unit has been exposed to a strong
external electric shock (such as lightning
or strong static electricity).
Set this unit in the standby mode, disconnect the
power cord, plug it back in after 30 seconds, then use
it normally.
—
On-screen display
does not appear.
The setting for the on-screen display is set
to “DISPLAY OFF”.
Select the full display or short display mode.
52
“GRAY BACK” in SET MENU is set to
OFF, and no video signal is currently
being received.
Set “GRAY BACK” to AUTO to always show the
OSD.
64
No sound
Incorrect input or output cable
connections.
Connect the cables properly. If the problem persists,
the cables may be defective.
15-20
The optimizer microphone is connected.
Disconnect the optimizer microphone.
24
The input mode is set to DTS or
ANALOG.
Select AUTO.
37
No appropriate input source has been
selected.
Select an appropriate input source with INPUT,
MULTI CH INPUT (or MULTI CH IN on the remote
control) or the input selector buttons.
30
Speaker connections are not secure.
Secure the connections.
12
The front speakers to be used have not
been selected properly.
Select the front speakers with SPEAKERS A and/or
B.
30
The volume is turned down.
Turn up the volume.
—
The sound is muted.
Press MUTE or any operation button of this unit to
resume audio output, then adjust the volume.
31
The input mode is set to ANALOG while
playing a source encoded with a DTS
signal.
Set the input mode to AUTO or DTS.
37
Signals this unit cannot reproduce are
being received from a source component,
such as a CD-ROM.
Play a source whose signals can be reproduced by this
unit.
—
No picture
The output and input for the picture are
connected to different types of video
jacks.
Turn on the video conversion function.
64