Troubleshooting Guide - Technics SA-DX850 Operating Instructions Manual

Troubleshooting guide

Before requesting service, make the below checks. If you can't fix the system as described below, or if something not listed here occurs, refer to
the enclosed directory to locate an Authorized Service Center convenient to you or contact your dealer.
No power.
No sound.
Cannot select "DIGITAL" input.
Sound stops. "OVERLOAD"
appears on the display.
"F 70" appears on the display.
The picture doesn't appear on the
television.
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.
Common problems
¡Ensure the power cord is connected.
¡Turn the volume up.
¡Turn muting off.
¡Check connections to speakers and other equipment.
¡Turn on the speakers.
¡Turn off the tape monitor.
¡Select the correct source.
¡Change the DIGITAL 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 off.
¡DTS FIX off (SA-DX850 only).
¡Cancel "DSP DEFEAT".
¡Switch off the unit, determine and correct the cause, then switch the unit on.
Causes include shorting of the positive and negative speaker wires, using
speakers with an impedance lower than rated for this unit, straining of the
speakers through excessive volume or power, and using the unit in a hot
environment.
¡Use speakers with the right impedance rating.
¡Turn the unit off, disconnect the AC mains lead, then reconnect and turn the
unit on. Consult your dealer if "F 70" remains on the display.
¡Change the television's input mode to suit the connections between this unit
and the television.
DSP sound modes
¡Ensure the size settings for your speakers are correct.
¡Check the DSP sound mode.
¡Cancel "DSP DEFEAT".
¡Cancel "DSP DEFEAT".
¡Turn SPEAKERS B off (SA-DX850 only).
¡Turn DVD 6CH INPUT off (SA-DX850 only).
Radio
¡Adjust the position of the FM or AM antenna.
¡Reduce the treble.
¡Select "DSP DEFEAT".
¡Turn off nearby televisions, video decks, DVD players, and satellite receivers.
¡You may need an outdoor antenna or an antenna with more elements.
¡Separate the antenna from other cables, leads, and appliances.
¡ Change the frequency step. Hold [BAND, EON] down for 10 seconds to
change the step to 9 kHz.
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