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Yamaha YHT-S401 Manual

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26 En
Troubleshooting
■ HDMI
The volume level
decreases without any
operation.
The volume level is automatically set to
70 the next time you turn on the unit to
protect the speakers.
Sound is poor (noisy).
A speaker cable may be shorted. Make sure all cables are connected properly.
8
This unit does not
operate properly.
This unit may receive a strong electrical
shock, such as from a lightening bolt or
excessive static electricity, or drop in
power supply.
Set this unit to standby mode, and then
disconnect the power cable. Wait for about 30
seconds, connect the power cable, and then turn
on this unit.
10
A digital or high-
frequency equipment
produces noises.
The unit may be placed close to digital
equipment or high-frequency equipment.
Place this unit farther away from such
equipment.
—
The unit settings
change automatically.
When “3-1:CONTROL” in the setup
menu “3:HDMI SETUP” is set to “ON”,
operations of the TV (for example,
changing channels, etc.) may change the
unit settings, such as the surround mode.
Set “3-1:CONTROL” in the setup menu
“3:HDMI SETUP” to “OFF” or set the unit
again by using its remote control. 19
The remote control
does not operate the
unit.
The unit may be outside the remote
control operation range.
For information on the remote control operation
range, refer to “Remote control preparation”.
2
The remote control sensor of this unit
may be exposed to direct sunlight or
lighting.
Change the lighting.
—
The batteries may be worn out. Replace the batteries. 2
The TV remote control
does not work even
when the remote signal
receptor is attached to
the top of the speaker.
The position of TV remote signal
receptor is not appropriate.
Move the TV remote signal receptor to right/left
so as to place its center to the front of TV
remote control sensor.
6
Place the TV remote signal receptor
approximately 10 mm away from TV.
6
The TV remote signal receptor is facing
an incompatible sensor, such as a sensor
for detecting the brightness of the room.
Place the TV remote signal receptor after
confirming the position of remote control sensor
by referring to the manual of your TV.
6
Problem Cause Solution
See
page
“AUTO” set in the
option menu “2.AUDIO
DELAY” does not
operate.
The TV does not support automatically
adjusting the audio delay.
Adjust the delay time manually (0 to 500 ms).
22
The HDMI control
function does not
operate properly.
The number of the connected HDMI
components is over the limit.
Disconnect some of the HDMI components.
—
Add the connection of HDMI
components
Set “3-1:CONTROL” in the “3:HDMI SETUP”
to “ON” again.
19
No picture or sound
The connected HDMI component does
not support high-bandwidth digital
copyright protection (HDCP).
Connect the HDMI component that supports
HDCP. —
Problem Cause Solution
See
page
… 28 …


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