Yamaha RX-497 - Manual (Page 46)

TROUBLESHOOTING
Refer to the chart below if this unit does not function properly. If the problem you are experiencing is not listed below or
if the instructions below do not help, set this unit to the standby mode, disconnect the power cord, and contact the nearest
authorized YAMAHA dealer or service center.
■ General
Problem Cause Remedy
See
page
This unit fails to turn
on. The power supply cord is not connected or
the plug is not completely inserted. Connect the power supply cord firmly.
—
The impedance setting is incorrect. Set the impedance to match yow speakers. 11
The protection circiiitiy ha.s been activated
because of a short circuit, etc. Check tha.t tlie speaker wires are not touching each
other and then turn the power of this unit ba.ck on.
11
The IMPEDANCE SELECTOR switch on
the rear panel is not set to either end. Set the IMPEDANCE SELECTOR switch to either
end wlien the power of this unit is turned off.
11
This unit has been exposed to a strong
external electric shock (such as lightning
or strong static electriciW). Set this unit to the standby mode, disconnect the
power supply cord, plug it back in after 30 seconds,
then use it nonnally. —
No sound Inconect input or output cable
connections. Connect the cables properly. If the problem persists,
the cables may be defective.
10
No appropriate mput source has been
selected. Select an appropriate input soiu’ce with the INPUT
selector on the fr'ont panel (or one of the input
selector buttons on the remote control).
15
The SPEAKERS AD switches are not set
properly. Turn on the coiTcsponding SPEAKERS A or
SPEAKERS B.
15
Speaker connections are not seciii"e. Secure the connections. 11
The sound suddenly
goes oft. The protection circuitiy has been activated
because of a short circuit, etc. Check that the IMPEDANCE SELECTOR setting is
coiTect.
11
Check that the speaker wires are not touching each
other and then turn the powder of this unit ba.ck on.
11
Only the speaker on
one side can be
heard. Inconect cable connections. Connect the cables properly. If the problem persists,
the cables may be defective.
10
Inconect setting for the BALANCE
control. Set the BALANCE control to the appropriate
position.
16
There is a lack of bass
and no ambience. The + and - wires are comiected in
reverse at the amplifier or the speakers. Connect the speaker wires to the correct and -
phase.
11
A “humming” sound
can be heard. Inconect cable connections. Connect the audio plugs firmly. If the problem
persists, the cables may be defective.
10
No connection from the turntable to the
GND Terminal. Make the GND connection between the turntable and
this unit.
10
The voiume ievei is
iow while playing a
record. The record is being played on a tuniTable
with an MC cartridge. The turntable should be connected to this unit through
the MC head ainphtier.
—
The voiume ievei
cannot be increased,
or the sound is
distorted. The component comiected to the MD/
TAPE OUT jacks of this unit is turned off. Turn on the power of the component.
—
42