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User's Manual
53
APPENDIX
Troubleshooting Guide
The Sun¿ re TGR-401 is expertly
designed and built to provide years of
trouble-free per for mance. Most prob-
lems that occur can usually be solved
by checking your setup or making
sure that the audio and video compo-
nents connected to the TGR-401 are
on and fully op er a tion al.
The following information will help
you deal with com mon setup problems
you may experience during normal
use of your unit. If problems persist,
contact your Sun¿ re Dealer for help.
No sound from one or more
speakers
• Speaker cables may have come
undone. Turn off your system and
check the cables, and tighten the
binding posts.
• An audio cable may have an inter-
nal break.
• The volume level is low for the
chan nels concerned. Recheck the
level cal i bra tion (page 39).
• The Mute switch is on.
• The channel has not been turned
on in the Speaker Size Menu
(page 33).
• The correct surround mode is not
selected. (Some DVD discs are
stereo only).
• Note: In Source Direct mode, only
the front left and right speakers are
engaged. They must also be set to
Large.
No subwoofer or poor output
• The subwoofer’s ampli¿ er is off, or
its controls are set low.
• Are all speakers set Large?
• SUB is not switched on in the
Speaker Size Menu (page 39).
• Recheck the level cal i bra tion pro-
cedure (page 39).
• Adjust the Crossover and check
Bass Management (page 39).
• See page 51 to ¿ nd the best loca-
tion for your subwoofer.
• If the bass is weak during Dolby
Digital or DTS playback, check the
correct audio output is selected in
your DVD menu, otherwise it may
just play stereo into your TGR-401
and you won’t get the true LFE
signal to the subwoofer.
Poor Tuning of Stations
• The antenna may be incorrectly
attached.
• The station is not correctly tuned
in, weak or off the air.
• You can improve reception by us-
ing external antennas. Some cable
TV feeds also offer FM re cep tion.
The same AM station can be
heard at different fre quen cies
• One wire of the AM loop antenna
may not be connected.
• A loop antenna is required for AM
reception, as it forms part of the
front-end tuned circuit.
Fully Automatic does not work
• Make sure the Auto On mode is
set to Y in the MAIN ZONE setup
menu (page 35) and that each
input is con¿ gured for AUTO ON
in their respective INPUTS menu
(page 33).
• In the INPUTS menu, also make
sure each source is set to MAIN,
and not M/Z2 or ZONE 2.
In order to automatically choose the
new input source, this mode senses
the fol low ing active signals: Left audio
signals, Video signals, Digital signals
Note that LD or DVD players
sometimes put out digital signals even
when the disc is paused or stopped.
Make sure that any sources are
turned off when not in use.
If a source is always active, the
automatic operation may return to that
input as the analog audio varies. In
this case, you should try and turn off
any unused sources, or turn off the
au to mat ic mode.
If you are listening to a mono
source, make sure it connects to a left
input, or use a “Y” cord to feed both
left and right inputs.
Certain inputs cannot be se-
lected
• Check the INPUTS menu of the
OSD (page 33), and make sure
that the input has not been dis-
abled in that particular Zone.
No TV picture
• Make sure that the video input of
your TV monitor is connected to
the Main monitor output on the
TGR-401 rear panel.
• Check the video input is correct
in the INPUTS menu of the OSD
(page 33). Select the type of video
input you have connected.
• Check that your TV monitor is
se lect ing it’s correct video input.
• Check the video connection from
your selected source component
into the TGR-401.
• If in doubt, try connecting the video
output from your source directly to
your TV monitor. This will help you
narrow down the problem.
• Do not connect more than one type
of video connection to the same
input. Choose only the highest
quality video type.
No Sonic Holography Effect
• It is essential that your front speak-
ers are po si tioned correctly. See
page 50.
• Sonic Holography is most ef-
fec tive in 2-channel operation. It
gives a more ac cu rate per cep tion
of the position of musicians and
sound effects. The results may be
masked if you are using it in a sur-
round mode.