Yamaha HTR 6230 - AV Receiver Owner's Manual page 47

Problem
The sound field "MEM.GUARD" in "OPTION MENU" is
parameters and some
set to "ON."
other settings of this
unit cannot be
changed.
This unit does not The internal microcomputer has been
operate properly.
frozen by an external electric shock (such
as lightning or excessive static electricity)
or by a power supply with low voltage.
"CHECK SP WIRES" Speaker cables are short-circuited.
appears on the front
panel display.
There is noise This unit is too close to the digital or high-
interference from frequency equipment.
digital or radio
frequency equipment.
The picture is
The video source uses scrambled or
disturbed. encoded signals to prevent dubbing.
This unit suddenly The internal temperature is too high and
enters the standby
the overheat protection circuitry has been
mode. activated.
Virtual CINEMA DSP
"MULTI CH" is selected as the input
is not activated. source.
Headphones are connected to the
PHONES jack.
This unit is in the "5ch Stereo" mode.
SILENT CINEMA is "MULTI CH" is selected as the input
not activated. source.
The unit is in the "2ch Stereo,"
"STRAIGHT" or "Music Enh.2ch" mode.
■
Tuner
Problem
FM stereo reception is
noisy.
There is distortion, and
clear reception cannot
be obtained even with a
FM
good FM antenna.
The desired station
cannot be tuned into
with the automatic
tuning method.
Previously preset
stations can no longer
be tuned into.
Cause
Cause
The characteristics of FM stereo
broadcasts may cause this problem
when the transmitter is too far away or
the antenna input is poor.
There is multi-path interference.
The signal is too weak.
This unit has been disconnected for a
long period.
Remedy
Set "MEM.GUARD" to "OFF."
Disconnect the power cable from the AC wall outlet
and then plug it in again after about 30 seconds.
Make sure all speaker cables are connected correctly.
Move this unit further away from such equipment.
Wait about 1 hour for this unit to cool down and then
turn it back on.
Select an input source other than "MULTI CH."
Disconnect the headphone plug from the PHONES
jack.
Exit from the "5ch Stereo" mode.
Select an input source other than "MULTI CH."
Exit from the "2ch Stereo," "STRAIGHT" or "Music
Enh2ch" mode.
Remedy
Check the antenna connections.
Try using a high-quality directional FM
antenna.
Use the manual tuning method.
Adjust the antenna position to eliminate
multi-path interference.
Use a high-quality directional FM antenna.
Use the manual tuning method.
Set preset stations.
Troubleshooting
See
page
35
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43
En