Troubleshooting - Yamaha RX-797 Mode D'emploi

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
The power supply cord is not connected or
This unit fails to turn
the plug is not completely inserted.
on.
The impedance setting is incorrect.
The protection circuitry has been activated
because of a short circuit, etc.
The IMPEDANCE SELECTOR switch on
the rear panel is not set to either end.
This unit has been exposed to a strong
external electric shock (such as lightning
or strong static electricity).
Incorrect input or output cable
No sound
connections.
No appropriate input source has been
selected.
The SPEAKERS A/B switches are not set
properly.
Speaker connections are not secure.
The protection circuitry has been activated
The sound suddenly
because of a short circuit, etc.
goes off.
Incorrect cable connections.
Only the speaker on
one side can be
heard.
Incorrect setting for the BALANCE
control.
The + and – wires are connected in
There is a lack of bass
reverse at the amplifier or the speakers.
and no ambience.
Incorrect cable connections.
A "humming" sound
can be heard.
No connection from the turntable to the
GND terminal.
The record is being played on a turntable
The volume level is
with an MC cartridge.
low while playing a
record.
The component connected to the MD/
The volume level
TAPE OUT jacks of this unit is turned off.
cannot be increased,
or the sound is
distorted.

TROUBLESHOOTING

Cause
Connect the power supply cord firmly.
Set the impedance to match your speakers.
Check that the speaker wires are not touching each
other and then turn the power of this unit back on.
Set the IMPEDANCE SELECTOR switch to either
end when the power of this unit is turned off.
Set this unit to the standby mode, disconnect the
power supply cord, plug it back in after 30 seconds,
then use it normally.
Connect the cables properly. If the problem persists,
the cables may be defective.
Select an appropriate input source with the INPUT
selector on the front panel (or one of the input
selector buttons on the remote control).
Turn on the corresponding SPEAKERS A or
SPEAKERS B.
Secure the connections.
Check that the IMPEDANCE SELECTOR setting is
correct.
Check that the speaker wires are not touching each
other and then turn the power of this unit back on.
Connect the cables properly. If the problem persists,
the cables may be defective.
Set the BALANCE control to the appropriate
position.
Connect the speaker wires to the correct + and –
phase.
Connect the audio plugs firmly. If the problem
persists, the cables may be defective.
Make the GND connection between the turntable and
this unit.
The turntable should be connected to this unit through
the MC head amplifier.
Turn on the power of the component.
TROUBLESHOOTING
Remedy
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