Panasonic SC-CH150 - Manual (Page 45)

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Before requesting service for this unit, check the chart below for a
possible cause of the problem you are experiencing. Some simple
checks or a minor adjustment on your part may eliminate the problem
and restore proper operation. If you are in doubt about some of the check points, or if the remedies
indicated in the chart do not solve the problem, refer to the directory
of Authorized Service Centers (enclosed with this unit) to locate a
convenient service center, or consult your dealer tor instructions.
Problem Possible cause(s) Remedial action
Problems common to entire system
No sound when the power
is ON Sound volume has been set to lowest position. Use the VOLUME buttons to adjust the volume.
Location of the sound is
not well defined. (+) and (-) connections to the speakers are
reversed. Connect the speaker cord correctly.
Left and right positioning
of the sound is reversed.
Left and-right connections to the speakers are
reversed. Connect the speaker cord correctly.
A low-frequency hum Is
heard during play.
AC power supply cord or fluorescent light is near a
connecting cord.
Keep electrical appliances well away from the
connecting cords. Try unplugging the AC power
supply cord and re-connecting it with its polarities
reversed.
Sound is heard only
through one of the
speakers.
One of the wires of the speaker cord is
disconnected. Connect the speaker cord correctly.
Sound suddenly stops
during play. (+) and (-) wires of speaker cord are shorted. Switch the unit to the standby mode, connect the
wires properly and turn the power back on.
Radio
Noise interferes with stereo
reception. Transmitting station is a long way away. Try using the TV antenna if the system's simple
antenna is not adequate.
High noise level during
stereo reception with
occasional disappearance
of sound Unsuitable installation position or orientation of
antenna.
Stereo indicator is flashing. Transmitting station is a long way away.
Power is being supplied to TV. video deck. Trying turning off power to TV, video deck.
High level of distortion in
stereo sound received Buildings or mountains nearby. Install a special high-sensitivity antenna and orient it
in the optimum direction.
High level of noise during
reception TV is being used at the same time. Switch off the TV or place it at a distance.
Antenna cord is close to the power cable. Run the antenna cord at a distance from the power
cable.
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