Troubleshooting Guide; Maintenance - Panasonic SA-HE75 Operating Instructions Manual

Troubleshooting guide

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, consult your dealer for
instructions.
No power.
No sound.
Cannot select "DIGITAL" input.
Sound stops. "OVERLOAD"
appears on the display.
"F 70" appears on the display.
Sound is not heard from the
center, surround, or subwoofer
speakers.
DSP sound modes cannot be
selected.
The radio cannot be tuned in or
there is a lot of noise and
interference.
The correct AM frequency
cannot be tuned in.

Maintenance

If the surfaces are dirty
To clean this unit, wipe with a soft, dry cloth.
¡ Never use alcohol, paint thinner or benzine to clean this unit.
¡ Before using chemically treated cloth, read the instructions that came with the cloth carefully.
Common problems
¡Ensure the AC mains lead is connected.
¡Turn the volume up.
¡Check connections to speakers and other equipment.
¡Turn on the speakers.
¡Turn off the tape monitor.
¡Select the correct source.
¡Change the D-INPUT setting to suit the type of connection you have made.
¡Check that the digital signals can be decoded by this unit.
¡Turn PCM FIX or DTS FIX off.
¡Cancel "DSP DEFEAT".
¡Switch off the unit, determine and correct the cause, then switch the unit on.
Causes include:
–Shorting (bare wires touching) of positive and negative speaker wires.
–Using speakers with an impedance lower than that rated for this unit.
–Straining of the speakers through excessive volume or power.
–Using the unit in a hot environment without proper ventilation.
¡Turn the unit off, disconnect the AC mains lead, and consult your dealer.
DSP sound modes
¡Ensure the SIZE settings for your speakers are correct.
¡Check the DSP sound mode.
¡Cancel "DSP DEFEAT".
¡Cancel "DSP DEFEAT".
¡Turn DVD 6CH INPUT off.
Radio
¡Connect the appropriate antenna. (You may need an outdoor antenna or one
with more elements.)
¡Adjust the position of the FM or AM antenna.
¡Reduce the treble.
¡Select "DSP DEFEAT".
¡Turn off nearby televisions, video players, DVD players, and satellite receivers.
¡Separate the antenna from other cables, leads, and appliances.
¡Turn the DVD player off or move it further away from the antennas if this occurs.
¡Change the frequency step. Hold [-BAND, –FM MODE] down for 3 seconds to
change the step to suit your area.
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