Technics SH-AC500D - Troubleshooting Guide

\
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, refer to
the directory of Authorized Service Centers (enclosed with this unit)
to locate a convenient service center, or consult your Technics
dealer for instructions.
Power will not switch ON. The power cord plug is not completely
inserted.
The left and right stereo connection cables
When listening to stereo
sound, the left and right
sounds are reversed.
are reveresd.
Poor sound localization.
terminals.
There is no sound when a
source is being played.
The muting function is set to ON.
Sound is not heard from
one of the front speakers.
center, surround or (L, R) input.
subwoofer speakers.
incorrectly set to “NONE” or “NO”.
The volume cannot be
controlled.
There is noise when playing | Play back a DTS formatted source in the
back a DTS source. SURROUND mode.
The midnight mode does
not function. (When the DR
COMP button on the remote
control is pressed, the DR
COMP indicator does not
light.)
“F70” appears on the
display.
Remote control does not The batteries have run out.
operate correctly.
control and this unit.
The batteries are inserted incorrectly.
[The (—) and (+) polarities are reversed.]
far to one side, either left or right.
The SURROUND mode has not selected.
The source being played has not been
recorded in the Dolby Digital! format.
There is an obstruction between the remote
i
The presence setting of the speaker has been | e Set the type and presence setting of each
speaker correctly.
The input selector is set to LINE. e Adjust the volume control on the external unit.
For detailed instructions, contact an authorized servicenter in the
U.S.A. and Panasonic Canada Inc. Customer Care Center in
Canada.
in the U.S.A. 1-800-211-7262 or web site
(http:/jwww.panasonic.com)
in Canada 905-624-5505 or web site
(www.panasonic.ca/faq.html)
¢ Confirm that the power cord plug is connected 8
completely.
e Check the connection cables are correctly
connected.
An error has been made with the connections
to the 6 channe! discrete input or output
The input selector setting is incorrect. e Check that the selection of the desired sound 15
source is made correctly.
Press the muting button on the remote 17
control.
The volume balance of front speaker is set too | è Adjust the volume balance between the left 12
and right front speakers correctly.
Sound is not heard from the | The receiver or amplifier is set to 2 channe!
è Set the receiver or amplifier to the 6 channel
discrete input mode.
è Select the DTS reproduction mode.
è Select the SURROUND mode.
è Check if the OG DIGITAL indicator is
illuminated.
e Turn off the power and then turn it on again,
or disconnect the AC power supply cord and
then connect it to your household AC outlet
again.
(If “F70” still remains on the display, consult
an authorized service center or your dealer.)
e Replace batteries with new ones.
e Remove the obstruction.
e Heinsert battertes so that polarities are
correct.