Sony STR-DA90ESG Operating Instructions Manual page 58

Additional Information
Severe hum or noise is heard.
/ Check that the speakers and components are
connected securely.
/ Check that the connecting cords are away
from a transformer or motor, and at least 10
feet (3 meters) away from a TV set or
fluorescent light.
/ Place your TV away from the audio
components.
/ Make sure you connect a ground wire to the
antenna ground terminal.
/ The plugs and jacks are dirty. Wipe them
with a cloth slightly moistened with alcohol.
No sound is heard from the center speaker.
/ Select a sound mode other than ACOUSTIC
or KARAOKE (see page 34).
/ Adjust the speaker volume appropriately
(see page 23).
No sound or only a very low-level sound is heard from
the rear speakers.
/ Select a sound field other than ACOUSTIC.
/ Adjust the speaker volume appropriately
(see page 23).
Surround effect cannot be obtained.
/ Turn on the sound field function.
/ Set DIRECT PASS to OFF.
/ Make sure you set the SPEAKERS selector
correctly (see page 10).
Tuner
Radio stations cannot be tuned in.
/ Check that the antenna is connected securely.
Adjust the antenna and connect an external
antenna if necessary.
/ The signal strength of the stations is too weak
(when you tune in with Automatic Tuning).
Use Direct Tuning (see page 27).
/ Make sure you set the tuning interval
correctly (when you tune in AM stations with
Automatic Tuning) (see page 27 or 50 and 60).
/ No stations have been preset or the preset
stations have been cleared (when you tune in
with Preset Tuning). Preset the stations (see
page 28 or 50).
/ Display the frequency by pressing DISPLAY
(when you tune with Automatic Tuning).
58
Others
IR codes of components cannot be registered.
/ When registering the IR code, be sure to
check the following:
• Point the remote at the IR sensor on the
receiver from a distance of less than 4 inches
(10 cm).
• Hold down the button on the remote for
about 2 or 3 seconds until the "RECEIVING"
display switches to "RELEASE YOUR
REMOTE".
• Keep the remote pointed horizontally at the
LEARNING SENSOR until the code is
registered.
Recording cannot be made.
/ Check that the components are connected
correctly.
/ Select the playback component with the
remote or with the FUNCTION knob on the
front panel.
A component cannot be selected
/ Check the FUNCTION hookup setting of the
component (see page 54).