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Problem
A "humming" sound
can be heard.
The volume level
cannot be increased, or
the sound is distorted.
The sound effect
cannot be recorded.
The sound field
parameters and some
other settings on this
unit cannot be
changed.
This unit does not
operate properly.
"CHECK SP WIRES"
appears on the front
panel display.
There is noise
interference from digital
or high-frequency
equipment, or this unit.
This unit suddenly
turns into the standby
mode.
Cause
Incorrect cable connections.
The component connected to the OUT
(REC) .jacks of this unit is turned off.
It is not possible to record tile sound
effect by a recording component.
"10 MEM. GUARD" in the SET MENU
is set to ON.
The internal nficrocolnputer has been
frozen by an external electric shock (such
as lightning or excessive static electricity)
or by a power supply with low voltage.
Speaker cables are short circuited.
This unit is too close to tile digital or
high-frequency equipment.
The internal temperature becomes too
high and the overheat protection circuitry
has been activated.
Remedy
Firmly connect the audio plugs. If the pmNem
persists, tile cables may be defective.
Turn on the power to the component.
Set "10 MEM. GUARD" in the SET MENU m
OFF.
Disconnect tile AC power cord from tile 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 until this unit cools down and then turn it
back on.
Refer
to page
10- 16
50
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