Troubleshooting - Sony TA-A1ES Operating Instructions Manual

Troubleshooting

If you experience any of the following difficulties while using the
amplifier, use this troubleshooting guide to help you remedy the
problem. Should any problem persist, consult your nearest Sony
dealer.
General
The amplifier is not turned on.
 Check that the AC power cord (mains lead) is connected securely.
The amplifier is turned off automatically.
 The auto standby function is working. Set the AUTO STANDBY
switch on the rear panel to OFF.
The  indicator is lit in red.
 There is something wrong with the amplifier. It might be because of
a short circuit of the speaker output, a short circuit of the
headphones output, or because the ventilation holes on the top of
the amplifier are blocked. Resolve the problem, then turn on the
amplifier again. If the indicator still lights up in red, disconnect the
AC power cord (mains lead) and consult your nearest Sony dealer.
Audio
There is no sound, no matter which equipment is selected, or only
a very low-level sound is heard.
 Check that the speakers and equipment are connected securely.
 Check that all speaker cords are connected correctly.
 Check that both the amplifier and equipment are turned on.
 Check that the volume level is not set at –∞ dB.
 Press MUTING to cancel the muting function.
 Check that you have selected the correct equipment with the LINE
1/2/3/4/5 indicators on the amplifier.
 Check the position of the IMPEDANCE dial.
Set the dial to PHONES OFF to listen to speakers, or other
appropriate positions according to the headphones you are using.
 The protective device on the amplifier has been activated. Turn off
the amplifier, eliminate the short circuit problem, and turn on the
amplifier again.
There is no sound from specific equipment.
 Check that the cables are fully inserted into the jacks on both the
amplifier and the equipment.
There is no sound from one of the speakers.
 Connect a pair of headphones to the PHONES jack and set the
IMPEDANCE dial to LOW to verify that sound is output from the
headphones. If only one channel is output from the headphones,
the equipment may not be connected to the amplifier correctly.
Check that all the cables are fully inserted into the jacks on both the
amplifier and the equipment. If both channels are output from the
headphones, the speaker may not be connected to the amplifier
correctly. Check the connection of the speaker which is not
outputting any sound.
 Make sure you have connected both the L and R jacks to analog
equipment and not just either the L or R jack. Use a monaural-stereo
cable (not supplied).
The left and right sounds are unbalanced or reversed.
 Check that the speakers and equipment are connected correctly
and securely.
There is severe hum or noise.
 Check that the speakers and equipment are connected securely.
 Check that the connecting cables are away from a transformer or
motor, and at least 3 meters away from a TV set or fluorescent light.
 Move your TV away from the audio equipment.
 The plugs and jacks may be dirty. Wipe them with a cloth slightly
moistened with alcohol.
The volume from phonograph records is low.
 The amplifier does not support phono inputs. Use a commercially
available phono-equalizer, and connect its analog output to the
amplifier.
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