Yamaha RX-V420RDS - Manual (Page 50)

48
TROUBLESHOOTING
12
12 – 15
The volume level cannot
be increased, or the
sound is distorted. The component connected to the REC OUT
jacks of this unit is turned off. Turn on the power to the component.
The effect and surround
sounds cannot be
recorded. It is not possible to record the effect and
surround sounds by a recording component.
A source cannot be
recorded. A source component is only connected to the
digital input jacks of this unit. Connect the source component to the analog
input jacks of this unit.
The settings of the SET
MENU and some other
settings on this unit
cannot be changed. “9 MEM. GUARD” in the SET MENU is set
to ON. Select OFF.
This unit does not
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. Disconnect the AC power cord from the outlet
and then plug it in again after about 30 seconds.
The sound is degraded
when listening with
headphones connected
to a tape deck or CD
player that is connected
to this unit. This unit is in the standby mode. Turn on the power of the unit.
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—
—
Refer to
page
Problem Cause Remedy
34
39
There is noise
interference from digital
or high-frequency
equipment, or the unit. The unit is too close to the digital or high-
frequency equipment. Move the unit further away from such
equipment.
0109V420RDS46-53_EN 2/12/1, 1:36 PM 48