Troubleshooting - Yamaha RX-797 Owner's Manual

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
The power supply cord is not connected or
Connect the power supply cord firmly.
-
on.
the plug is not completely inserted.
The impedance setting is incorrect. Set the impedance to match your speakers.
16
The protection circuitry has been activated
Check that the speaker wires are not touching each
12
because of a short circuit, etc.
other and then tum the power of this unit back on.
The IMPEDANCE SELECTOR switch on Set the IMPEDANCE SELECTOR switch to either
16
the rear panel is not set to either end.
end when the power of this unit is turned off.
This unit has been exposed to a strong
Set this unit to the standby mode, disconnect the
external electric shock (such as lightning power supply cord, plug it back in after 30 seconds,
-
or strong static electricity). then use it normally.
No sound
Incorrect input or output cable Connect the cables properly. If the problem persists,
13
connections. the cables may be defective.
No appropriate input source has been Select an appropriate input source with the INPUT
selected. selector on the front panel (or one of the input
18
selector buttons on the remote control).
The SPEAKERS AlB switches are not set
Tum on the corresponding SPEAKERS A or
18
properly.
SPEAKERS B.
Speaker connections are not secure. Secure the connections.
12
The sound suddenly
The protection circuitry has been activated Check that the IMPEDANCE SELECTOR setting is
16
goes off. because of a short circuit, etc.
correct.
Check that the speaker wires are not touching each
12
other and then tum the power ofthis unit back on.
Only the speaker on
Incorrect cable connections. Connect the cables properly. If the problem persists,
12,13
one side can be
the cables may be defective.
heard.
Incorrect setting for the BALANCE Set the BALANCE control to the appropriate
20
control. position.
There is a lack of bass
The
+
and
~
wires are connected in Connect the speaker wires to the correct
+
and -
12
and no ambience.
reverse at the amplifier or the speakers. phase.
A "humming" sound
Incorrect cable connections. Connect the audio plugs firmly. If the problem
13
can be heard. persists, the cables may be defective.
No connection from the turntable to the Make the GND connection between the turntable and
13
GND terminal. this unit.
The volume level is
The record is being played on a turntable The turntable should be connected to this unit through
low while playing a with an MC cartridge. the MC head amplifier.
-
record.
The volume level
The component connected to the MDI Tum on the power of the component.
cannot be increased,
TAPE OUT jacks ofthis unit is turned off.
-
or the sound is
distorted.
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
The power supply cord is not connected or
Connect the power supply cord firmly.
-
on.
the plug is not completely inserted.
The impedance setting is incorrect. Set the impedance to match your speakers.
16
The protection circuitry has been activated
Check that the speaker wires are not touching each
12
because of a short circuit, etc.
other and then tum the power of this unit back on.
The IMPEDANCE SELECTOR switch on Set the IMPEDANCE SELECTOR switch to either
16
the rear panel is not set to either end.
end when the power of this unit is turned off.
This unit has been exposed to a strong
Set this unit to the standby mode, disconnect the
external electric shock (such as lightning power supply cord, plug it back in after 30 seconds,
-
or strong static electricity). then use it normally.
No sound
Incorrect input or output cable Connect the cables properly. If the problem persists,
13
connections. the cables may be defective.
No appropriate input source has been Select an appropriate input source with the INPUT
selected. selector on the front panel (or one of the input
18
selector buttons on the remote control).
The SPEAKERS AlB switches are not set
Tum on the corresponding SPEAKERS A or
18
properly.
SPEAKERS B.
Speaker connections are not secure. Secure the connections.
12
The sound suddenly
The protection circuitry has been activated Check that the IMPEDANCE SELECTOR setting is
16
goes off. because of a short circuit, etc.
correct.
Check that the speaker wires are not touching each
12
other and then tum the power ofthis unit back on.
Only the speaker on
Incorrect cable connections. Connect the cables properly. If the problem persists,
12,13
one side can be
the cables may be defective.
heard.
Incorrect setting for the BALANCE Set the BALANCE control to the appropriate
20
control. position.
There is a lack of bass
The
+
and
~
wires are connected in Connect the speaker wires to the correct
+
and -
12
and no ambience.
reverse at the amplifier or the speakers. phase.
A "humming" sound
Incorrect cable connections. Connect the audio plugs firmly. If the problem
13
can be heard. persists, the cables may be defective.
No connection from the turntable to the Make the GND connection between the turntable and
13
GND terminal. this unit.
The volume level is
The record is being played on a turntable The turntable should be connected to this unit through
low while playing a with an MC cartridge. the MC head amplifier.
-
record.
The volume level
The component connected to the MDI Tum on the power of the component.
cannot be increased,
TAPE OUT jacks ofthis unit is turned off.
-
or the sound is
distorted.
46