Sony TA-AV621 Operating Instructions Manual page 16

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Before going through the check list below, first refer back to the connection and
operating procedures.
Should any problem persist after you have made these checks, consult your nearest
Sony dealer.
No audio. © Check the power cord connection.
© Check the SPEAKERS selector setting.
© Check the connections.
© Check the setting of the function selector.
© Check the speaker terminal connection and the speaker cord
for a short.
No audio from one channel. © Adjust the BALANCE control.
© Check the speaker cord or connecting cord connection.
Lack of bass sound or obscure instrument position. © Check the connection between the amplifier and speakers.
Severe hum or noise when using the turntable. © Ground the turntable system.
¢ Fully insert the plug of the connecting cord.
© Disconnect the ground wire of the turntable from the terminal
when using an MM cartridge with a ground piece.
Noise when TV is turned on. © Move the TV away from the audio system.
Switching on DBFB does not affect the sound. © The DBFB button reinforces only low frequencies.
No sound or sound at very low level is heard from rear © Check if the SURROUND button is set to OFF. (No indicators
speakers. are lit.) (See page 11.)
© Check if the volume level of the rear speakers is set to
minimum.
© Check if the monaural program source is played back in
Dolby surround mode.
© Check if the 3CH mode is selected in the DOLBY PRO
LOGIC MODE. (See page 8.)
The operation cannot be performed with the remote
© Check that the batteries are loaded correctly.
commander.
© Check if there is any obstacle between the remote
commander and the amplifier.
* Check if the batteries are exhausted.
The commander signal cannot be programmed. © Check if there is noise interference. Place both remote
commanders apart from the source of noise.
© Check if the batteries are exhausted.
The LEARN indicator goes off after flashing. ¢ Check that the internal memory capacity is full. Clear all the
signals and program again. (See page 14.)
Sony Corporation _Printed in Malaysia