Onkyo DR-90 - Manual (Page 62)

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This unit contains a sensitive microcomputer, which under certain circumstances might fail to operate due to excessive noise
interference. In such case, switch off the main power by pressing the POWER switch, wait five seconds, then switch it on
again.
Symptoms
Too much noise is heard or
sound is interrupted
occasionally. (“STEREO”
indicator does not light
steadily.)
Sound is distorted or
sound volume decreases.
Sound is excessively
distorted.
No preset channels are
selected.
Sound is reproduced from
the speakers but not
recorded.
The buttons on the DVD
Receiver operate but the
buttons on the remote
controller do not operate.
Causes
• FM stereo waves may produce a hiss
noise when a certain level is reached.
• The position or direction of the antenna is
incorrect.
• The station is too weak.
• The radio wave is distorted.
• Cars are running or airplanes are flying
near the house.
• There is a tall building or a mountain
nearby.
[The waves transmitted from the
transmission center (direct waves) and
the waved diffracted by buildings or
mountains (diffraction waves) interfere
with each other causing multi pass
distortion.]
• The power cord is unplugged, or the main
power is switched off, for a long time.
• The sound system you are trying to
record is DTS Surround.
• A wrong sound signal conversion method
is selected.
• No batteries are inserted in the remote
controller.
• The batteries are worn out.
• The remote controller is not pointed at the
remote sensor of the DVD Receiver.
• The remote controller is too far from the
DVD Receiver.
• The DVD RECEIVER/LEVEL SETUP/TV
switch is set to the wrong position.
Remedies
• Switch the frequency receiving mode to
mono.
• Lower the treble level.
• Adjust the position, height, and direction
of the antenna.
• Connect an outdoor FM antenna. Try to
use an antenna with more elements.
(For installation of the outdoor antenna,
consult your nearest dealer as it requires
special skills and experience.)
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–
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• The preset data in memory is lost. Preset
the radio stations again.
• DTS Surround sound is unable to be
recorded regardless of the sound signal
conversion method.
• Check the current sound signal
conversion method and select the right
one for recording.
• Insert new batteries.
• Replace with new batteries.
• Point the remote controller at the remote
sensor of the DVD Receiver.
• Operate the remote controller within 16
feet (5 m).
• Set the switch to the right position.
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T
uner
Remote contr
oller
Recor
ding
Troubleshooting (continued)