Sunfire III - Manual (Page 52)

User's Manual
52
APPENDIX
The Sunfi re TGIII 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 pro ces sor 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 the problems still
persist, please contact your Sunfi re
Dealer for assistance.
No sound from one or
more speakers
• Speaker cables may have
come undone. Turn off your
system and check the cables.
• Broken audio cable.
• The volume level is low for the
chan nels concerned. Recheck
the Cal i bra tion procedure.
• The Mute switch is on.
• The channel has not been
turned on in the Speaker size
menu.
• The correct surround mode is
not selected. (Some DVD discs
are stereo only).
• Zone 1 turned off, or inputs
are disabled in the OSD Inputs
menu.
• If you are using one surround
back speaker, make sure its
amplifi er is using the TGIII
left surround back output, not
the right (no output for 1 back
speaker).
• AMP turn-on not connected.
• As a last resort, reset the TGIII,
as shown on page 54.
No sound from the sub
• The subwoofer’s amplifi er may
be off.
• Are all speakers set Large?
• SUB is not switched on in the
SETUP menu.
• As a last resort, reset the TGIII.
Poor Tuning of Stations
• The antenna may be incor-
rectly attached.
• Noise reduction not on.
• Stations are not correctly tuned
in.
• The station is weak or has
gone off the air.
• You can improve reception
by using external antennas.
Some cable TV feeds offer FM
re cep tion as well.
The same AM station can
be heard at many different
fre quen cies
• One wire of the AM loop an-
tenna may not be connected.
• A loop antenna is required for
AM reception, as it forms part
of the front-end tuned circuit.
Full Automatic Operation
does not work
In order to automatically choose
the new input source, this mode
senses the fol low ing active signals:
• Left audio signals.
• Video signal.
• 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.
Troubleshooting Guide
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.
There is no automatic selection of
the Phono input, Tuner, or 8-CH.
Certain inputs cannot be
selected
• Check the INPUTS menu of
the OSD, and make sure that
the input has not been disabled
in that particular Zone.
A Hum is heard in your
speak ers
This problem is more than likely
caused by a “ground loop” in your
system, rather than a fault in the TGIII.
Follow these steps to isolate the main
cause of the hum, there may even be
more than one.
• Remember to turn off all
components in your system,
including the amplifi ers and the
TGIII, before disconnecting or
con nect ing any cables.
• Disconnect the following items
in order, and check each time if
the hum has gone away:
• Disconnect all cables which
come from outside the room,
such as cable TV, satellite TV,
or roof top antennas. Make
sure that they are dis con -
nect ed where they fi rst enter
the room, so they are making
no con nec tion to the TGIII or
the TV, or any other compo-
nent. If the hum is caused by
the cable TV line, then you will
need a “ground loop iso la tor.”
This is an inexpensive device