Yamaha RX-V420RDS Mode D'emploi page 50

TROUBLESHOOTING
Problem
The volume level cannot
be increased, or the
sound is distorted.
The effect and surround
sounds cannot be
recorded.
A source cannot be
recorded.
The settings of the SET
MENU and some other
settings on this unit
cannot be changed.
This unit does not
operate properly.
The sound is degraded
when listening with
headphones connected
to a tape deck or CD
player that is connected
to this unit.
There is noise
interference from digital
or high-frequency
equipment, or the unit.
48
Cause
The component connected to the REC OUT
jacks of this unit is turned off.
It is not possible to record the effect and
surround sounds by a recording component.
A source component is only connected to the
digital input jacks of this unit.
"9 MEM. GUARD" in the SET MENU is set
to ON.
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.
This unit is in the standby mode.
The unit is too close to the digital or high-
frequency equipment.
Remedy
Turn on the power to the component.
Connect the source component to the analog
input jacks of this unit.
Select OFF.
Disconnect the AC power cord from the outlet
and then plug it in again after about 30 seconds.
Turn on the power of the unit.
Move the unit further away from such
equipment.
Refer to
page
12
34
12 – 15
39
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