Yamaha RX-V557 User Manual
70
TROUBLESHOOTING
Problem
Cause
Remedy
Refer to
page
Dolby Digital or DTS
sources cannot be
played. (Dolby Digital
or DTS indicator in
the front panel
display does not light
up.)
sources cannot be
played. (Dolby Digital
or DTS indicator in
the front panel
display does not light
up.)
The connected component is not set to
output Dolby Digital or DTS digital
signals.
output Dolby Digital or DTS digital
signals.
Make an appropriate setting following the operating
instructions for your component.
instructions for your component.
—
The input mode is set to ANALOG.
Set the input mode to AUTO or DTS.
32
A “humming” sound
can be heard.
can be heard.
Incorrect cable connections.
Firmly connect the audio plugs. If the problem
persists, the cables may be defective.
persists, the cables may be defective.
—
The volume level
cannot be increased,
or the sound is
distorted.
cannot be increased,
or the sound is
distorted.
The component connected to the OUT
(REC) jacks of this unit is turned off.
(REC) jacks of this unit is turned off.
Turn on the power to the component.
—
The sound effect
cannot be recorded.
cannot be recorded.
It is not possible to record the sound effect
with a recording component.
with a recording component.
A source cannot be
recorded by a digital
recording component
connected to this
DIGITAL OUTPUT
jack.
recorded by a digital
recording component
connected to this
DIGITAL OUTPUT
jack.
The source component is not connected to
this unit’s DIGITAL INPUT jacks.
this unit’s DIGITAL INPUT jacks.
Connect the source component to the DIGITAL
INPUT jacks.
INPUT jacks.
14-18
Some components cannot record the
Dolby Digital or DTS sources.
Dolby Digital or DTS sources.
A source cannot be
recorded by an
analog component
connected to the
AUDIO OUT jacks.
recorded by an
analog component
connected to the
AUDIO OUT jacks.
The source component is not connected to
this unit’s analog AUDIO IN jacks.
this unit’s analog AUDIO IN jacks.
Connect the source component to the analog AUDIO
IN jacks.
IN jacks.
14-18
The sound field
parameters and some
other settings on this
unit cannot be
changed.
parameters and some
other settings on this
unit cannot be
changed.
“MEMORY GUARD” in SET MENU is
set to ON.
set to ON.
Select OFF.
53
This unit does not
operate properly.
operate properly.
The internal microcomputer has been
frozen by an external electric shock (such
as lightning or excessive static electricity)
or by a power supply with low voltage.
frozen by an external electric shock (such
as lightning or excessive static electricity)
or by a power supply with low voltage.
Disconnect the AC power cord from the outlet and
then plug it in again after about 30 seconds.
then plug it in again after about 30 seconds.
—
“CHECK SP WIRES”
appears in the front
panel display.
appears in the front
panel display.
Speaker cables are short circuited.
Make sure all speaker cables are connected correctly.
12
There is noise
interference from
digital or radio
frequency equipment,
or this unit.
interference from
digital or radio
frequency equipment,
or this unit.
This unit is too close to the digital or high-
frequency equipment.
frequency equipment.
Move this unit further away from such equipment.
—
The picture is
disturbed.
disturbed.
The video source uses scrambled or
encoded signals to prevent dubbing.
encoded signals to prevent dubbing.
This unit suddenly
turns into the standby
mode.
turns into the standby
mode.
The internal temperature becomes too
high and the overheat protection circuitry
has been activated.
high and the overheat protection circuitry
has been activated.
Wait about 1 hour for this unit to cool down and then
turn it back on.
turn it back on.
—