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Troubleshooting
If you have any trouble using your TX-L55, look for a
solution in this section. If you can’t resolve the issue
yourself, contact your Onkyo dealer.
Can’t turn on the TX-L55?
• Make sure that the power cord is properly plugged into
the wall outlet.
• Unplug the power cord from the wall outlet, wait five
seconds or more, then plug the cable in again.
The TX-L55 turns off as soon as it’s turned on?
• The amp protection circuit has been activated.
Remove the power cord from the wall outlet immedi-
ately and contact your Onkyo dealer.
There’s no sound, or it’s very quiet?
• Make sure that all audio connecting plugs are pushed
in all the way (page 20).
• Make sure that the inputs and outputs of all compo-
nents are connected properly (page 20).
• Make sure that the polarity of the speaker cables is
correct and that the bare wires are in contact with
metal part of each speaker terminal (page 16)
• Make sure that the input source is properly selected
(page 33).
• Check the volume setting. It can be set to MIN, 1
through 79, or MAX (page 33).
The TX-L55 is designed for home theater enjoyment.
It has a wide volume range, allowing precise adjust-
ment.
• If the MUTING indicator is shown on the display,
press the remote controller’s [MUTING] button to
unmute the TX-L55 (page 34).
• While a pair of headphones is connected to the
PHONES jack, no sound is output by the speakers
(page 35).
• Check the digital audio output setting on the con-
nected component. On some games consoles, such as
those that play DVDs, the default setting is off.
•With some DVD-Video discs, you need to select an
audio output format from a DVD-Video disc menu.
• Make sure that the correct input signal audio format is
selected (page 51).
•To use a turntable with an MC-type cartridge requires
a commercially available MC phono preamp
(page 28).
• Make sure that none of the connecting cables are bent,
twisted, or damaged.
• Not all listening modes use all of the speakers
(page 42).
• Specify the speaker distances (page 50) and adjust the
individual speaker levels (page 30).
Only the front speakers produce sound?
• When the Stereo listening mode is selected, only the
front speakers and subwoofer produce sound.
• When the Direct listening mode is selected, only the
front speakers produce sound.
• Make sure the speakers are configured correctly
(page 48).
Only the center speaker produces sound?
• If you use the Pro Logic II Movie/Music or Pro Logic
IIx Movie/Music listening mode with a mono source,
such as a mono TV program, the sound is concentrated
in the center speaker.
• Make sure the speakers are configured correctly
(page 48).
The surround speakers produce no sound?
• When the Stereo or Direct listening mode is selected,
the surround speakers produce no sound (page 42).
• Depending on the source and current listening mode,
not much sound may be produced by the surround
speakers. Try selecting another listening mode.
• Make sure the speakers are configured correctly
(page 48).
The center speaker produces no sound?
• When the Mono, Stereo, or Direct listening mode is
selected, the center speaker produces no sound
(page 42).
• When the Orchestra listening mode is selected, the
center speaker produces no sound (page 42).
• Make sure the speakers are configured correctly
(page 48).
The surround back speakers produce no
sound?
• The surround back speakers are not used with all lis-
tening modes. Select another listening mode
(page 39).
• Not much sound may be produced by the surround
back speakers with some sources.
• If you are using a Dolby Digital EX or DTS-ES
source, make sure that the Dolby Digital/DTS setting
is set to On (page 43).
• Make sure the speakers are configured correctly
(page 48).
The subwoofer produces no sound?
• When playing material that contains no information in
the LFE channel, the subwoofer produces no sound.
• Make sure the speakers are configured correctly
(page 48).
Power
Audio