Troubleshooting - Yamaha DSP-E492 Owner's Manual

If the unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple
measures suggested. If it cannot be corrected, or if the fault is not listed in the SYMPTOM column, disconnect the power cord and
contact your authorized YAMAHA dealer or service center for help.
SYMPTOM
The unit fails to turn on when the POWER
switch is pressed, or turns off suddenly soon
after the power is turned on.
No sound or no picture.
The sound suddenly goes off.
Only one side speaker outputs the sound.
Sound "hums".
The volume level cannot be increased, or
sound is distorted.
No sound from the main speakers.
No sound from the rear speakers.
No sound from the center speaker.
The remote control transmitter does not work.
The sound is degraded when listening with the
headphones connected to the compact disc
player or cassette deck that are connected with
this unit.
Noise from nearby TV or tuner.

TROUBLESHOOTING

CAUSE
Power cord is not plugged in or is not completely
inserted.
The IMPEDANCE SELECTOR switch on the rear
panel is not set to the left or right end exactly.
Incorrect output cord connections.
Appropriate input source is not selected.
The PROCESSOR SELECTOR switch on the front
panel is set to the "EXTERNAL" position.
Speaker connections are not secure.
The protection circuit has been activated because
of short circuit etc.
Incorrect cord connections.
Incorrect cord connections.
The power to the component connected to the REC
OUT terminals of this unit is off.
The volume is adjusted to minimum on the external
amplifier driving the main speakers.
Incorrect cord connections.
The sound output level to the rear speakers is set
to 0.
The monaural sound source is played in DOLBY
PRO LOGIC or DOLBY PRO LOGIC ENHANCED
mode.
The sound output level to the center speaker is set
to 0.
The center channel mode is in PHANTOM mode.
Incorrect sound field program selection.
Direct sunlight or lighting (of an inverter type of
flourescent lamp etc.) is striking the remote control
sensor of the main unit.
The batteries of this remote control transmitter are
too weak.
The power to this unit is off.
This unit is too close to the affected equipment.
REMEDY
Firmly plug in the power cord.
Set the switch to the left or right end exactly.
Connect the cords properly. If the problem persists,
the cords may be defective.
Select an appropriate input source with the input
selector buttons.
When you will not use signals input to the INPUT
(from AMP/RECEIVER PREOUT) terminals on the
rear panel, make sure to set the PROCESSOR
SELECTOR switch to the "INTERNAL" position.
Secure the connections.
Turning the unit off and then on will reset the
protection circuit.
Connect the cords properly. If the problem persists,
the cords may be defective.
Firmly connect the audio plugs. If the problem
persists, the cords may be defective.
Turn the power to the component on.
Increase the volume on the external amplifier.
Connect the cords properly. If the problem persists,
the cords may be defective.
Raise the sound output level to the rear speakers.
Select another program suitable for the monaural
sound source.
Raise the sound output level to the center speaker.
Select NORMAL or WIDE.
Select the appropriate program.
Change the position of the main unit.
Replace the batteries with new ones.
Turn the power to this unit on.
Move the unit further away from the affected
equipment.
27