Other audio problems – Pioneer SC-LX78-K User Manual
Page 115
115
FAQ
13
Symptom
Remedy
No sound from front height or front
wide speakers.
Check that the front height or front wide speakers are set to LARGE or SMALL, and the
surround speakers are not set to NO (see
).
When Speaker System is set to 7.2.2ch TMd/FW and SP: TMd ON is selected with the
OUT P. button, no sound will be output from the front wide speakers. Select SP: FW ON
or SP: TMd/FW ON (see
Switching the speaker terminals
).
When Speaker System is set to 7.2.2ch TMd/FH and SP: TMd ON is selected with the
OUT P. button, no sound will be output from the front height speakers. Select SP: FH ON
or SP: TMd/FH ON (see
Switching the speaker terminals
on
).
Check the speaker connections (see
No sound from subwoofer.
Check that the subwoofer is connected properly, switched on and the volume turned up.
If your subwoofer has a sleep function, make sure it is switched off.
Make sure that the Subwoofer setting is YES or PLUS (see
).
The crossover frequency may be set too low; try setting it higher to match the characteris-
tics of your other speakers (see
on
If there is very little low frequency information in the source material, change your
speaker settings to Front: SMALL / Subwoofer: YES, or Front: LARGE / Subwoofer: PLUS
(see
).
Check that the LFE channel is not set to OFF, or to a very quiet setting (see
on
).
Check the speaker level settings (see
No sound from the speakers.
Check the AMP setting. Set it to ON when you want to output sound from all the speakers
(
No sound from one speaker.
Check the speaker connection (see
on
).
Check the speaker level settings (see
Check that the speaker hasn’t been set to NO (see
).
The channel may not be recorded in the source. By using one of the advanced effect
listening modes, you may be able to create the missing channel (see
types of playback using the listening modes
Sound is produced from analog
components, but not from digital
ones (DVD, LD, CD, etc.).
Check that the input signal type is set to DIGITAL (see
).
Make sure that the digital input is assigned correctly for the input jack the component is
connected to (see
Check the digital output settings on the source component.
If the source component has a digital volume control, make sure this is not turned down.
SC-LX88 only:
No sound is produced even if
MULTI CH IN is selected.
When 5.2ch F+Surr Bi-Amp, 5.2ch F+C Bi-Amp or 5.2ch C+Surr Bi-Amp is selected in
the Speaker System settings (when the center or surround speakers are bi-amped), no
sound is produced even when MULTI CH IN is selected.
No sound is output or a noise is out-
put when Dolby Digital/DTS software
is played back.
Check that your BD or DVD player is compatible with Dolby Digital/DTS discs.
Check the digital output settings or the HDMI audio output settings of your BD or DVD
player. Make sure that the DTS signal output is set to On.
If the source component has a digital volume control, make sure this is not turned down.
No sound when using the
HOME MENU.
If the HDMI input function is selected, sound is muted until exiting the HOME MENU.
Other audio problems
Symptom
Remedy
Speaker switching sound (clicking
sound) is heard from receiver during
playback.
Since ECO MODE 1 and ECO MODE 2 reduce the power consumption, the speakers
are switched in function of the number of input channels. Because of this, a speaker
switching sound (clicking sound) may be produced when the number of input channels
is switched. If this bothers you, switch to a different listening mode.
Depending on the listening mode, the front height (or front wide) and surround back
speakers may switch automatically in function of changes in the input audio. A speaker
switching sound (clicking sound) will be heard from the receiver at this time. If this sound
bothers you, we recommend to change the speaker terminal option (see
Broadcast stations cannot be
selected automatically, or there is
considerable noise in radio broad-
casts.
Fully extend the FM wire antenna, adjust the position for best reception and secure to a
wall, etc.
Use an outdoor antenna for better reception (see
Adjust the position and direction of the AM antenna.
Noise may be caused by interference from other equipment, such as a fluorescent light,
motor, etc. Switch off or move the other equipment, or move the AM antenna.
Noise is output when scanning a
DTS CD.
This is not a malfunction of the receiver. The scan function of your player alters the digital
information, making it unreadable, resulting in noise being output. Lower the volume
when scanning.
When playing a DTS format LD there
is audible noise on the soundtrack.
Make sure that the input signal type is set to DIGITAL (see
).
Can’t record audio.
You can only make a digital recording from a digital source, and an analog recording
from an analog source.
For digital sources, make sure that what you’re recording isn’t copy protected.
Subwoofer output is very low.
To route more signal to the subwoofer, set it to PLUS or set the front speakers to SMALL
(see
).
Everything seems to be set up cor-
rectly, but the playback sound is odd.
The speakers may be out of phase. Check that the positive/negative speaker terminals on
the receiver are matched with the corresponding terminals on the speakers (see
).
The Phase Control feature doesn’t
seem to have an audible effect.
If applicable, check that the lowpass filter switch on your subwoofer is off, or the lowpass
cutoff is set to the highest frequency setting. If there is a PHASE setting on your sub-
woofer, set it to 0º (or depending on the subwoofer, the setting where you think it has the
best overall effect on the sound).
Make sure the speaker distance setting is correct for all speakers (see
).
Full Band Phase Control cannot be
selected.
Perform Full Auto MCACC measurements (see
Automatically conducting optimum
sound tuning (Full Auto MCACC)
). Full Band Phase Control automatically
turns on once measurements are completed.
Noise or hum can be heard even
when there is no sound being input.
Check that personal computers or other digital components connected to the same
power source are not causing interference.
Can’t select some Input functions
by the INPUT SELECTOR on the
front panel or the ALL button on the
remote control.
Check the Input Skip settings in the Input Setup menu (see
).
Check the HDMI Input assignment in the Input Setup menu then try OFF (see
There seems to be a time lag
between the speakers and the output
of the subwoofer.
Automatically conducting optimum sound tuning (Full Auto MCACC)
to set up your system again using MCACC (this will automatically compensate for a delay
in the subwoofer output).