Pioneer VSX-51 Stereo Receiver User Manual

Additional information
Professional Calibration EQ graphical output
Symptom Remedy
The reverb characteristics graph after EQ
calibration does not appear entirely flat.
There are cases where the graph does not appear flat (even when
selecting ALL CH ADJ in the Auto MCACC Setup) due to adjust-
ments made to compensate for room characteristics to achieve
optimal sound.
Areas of the graph may appear identical (before and after) when
there is little or no adjustment needed.
The graph may appear to have shifted vertically when comparing
before and after measurements.
EQ adjustments made using the Manual
MCACC setup do not appear to change
the reverb characteristics graph after EQ
Despite level adjustments being made, the filters used for analysis
may not display these adjustments in the reverb characteristics
graph after EQ calibration. However, these adjustments are taken
into account by the filters dedicated to overall system calibration.
Lower frequency response curves do not
seem to have been calibrated for SMALL
Low frequencies used in bass management (the subwoofer chan-
nel) will not change for speakers that have been specified as
SMALL in the configuration, or do not output these frequencies.
Calibration is performed, but due to your speakers’ low frequency
limitations, no measurable sound is output for display.
Symptom Remedy
The display is dark or off. Press DIMMER repeatedly to select a different brightness.
You can’t get DIGITAL to display when
Check the digital connections and make sure that the digital
inputs are assigned correctly (see The Input Setup menu on page
26 ).
2 DIGITAL or DTS does not light when
playing Dolby/DTS software.
These indicators do not light if playback is paused.
Check the playback (especially the digital output) settings of the
source component.
When playing Dolby Digital or DTS
sources, the receiver’s format indicators
do not light.
Check that the player is connected using a digital connection.
Make sure that the receiver is set to AUTO or DIGITAL (see Choos-
ing the input signal on page 37 ).
Check that the player isn’t set up so that Dolby Digital and DTS
sources are converted to PCM.
Ensure that if there are several audio tracks on the disc, the Dolby
Digital or DTS is selected.
When playing certain discs, none of the
receiver’s format indicators light.
The disc may not contain 5.1/6.1 channel material. Check the disc
packaging for more on what audio tracks are recorded on the disc.
Symptom Remedy
When playing a disc with the listening
mode set to Auto Surround or ALC, 2
Pro Logic II or DTS Neo:6 appear on the
Make sure that the receiver is set to AUTO or DIGITAL (see Choos-
ing the input signal on page 37 ).
If a two channel soundtrack is currently playing (including Dolby
Surround encoded), then this is not a malfunction. Check the disc
packaging for details about the audio tracks available.
During playback of DVD-Audio, the dis-
play shows PCM.
This will occur when playing DVD-Audio material over the HDMI
connection. This is not a malfunction.
The power turns off automatically and
some indicator flashes, or some indicator
flashes and the power does not turn on.
See the Power section (page 71).
Remote control
Symptom Remedy
Cannot be remote controlled. Set the remote control unit’s remote control mode so that it
matches the setting on the main unit (see Operating multiple
receivers on page 53 ).
Check whether the receiver’s remote control mode is properly set
(see Remote Control Mode Setup on page 69 ).
Try replacing the batteries in the remote control (see Loading the
batteries on page 6 ).
Be sure to operate within 7 m (23 ft.) and a 30º angle of the remote
sensor on the front panel (see Operating range of remote control
unit on page 6 ).
Check that there are no obstacles between the receiver and the
remote control.
Make sure that there is no fluorescent or other strong light shining
on to the remote sensor.
Check the connections of the CONTROL IN jacks (see Operating
other Pioneer components with this unit’s sensor on page 23 ).
Other components can’t be operated with
the system remote.
If the battery ran down, the preset codes may have been cleared.
Re-enter the preset codes.
The preset code may be incorrect. Redo the procedure for entering
preset codes.
When commands from the remote control units of other devices
are registered using the learning function, in some cases they
may not be learned properly. In this case, register the commands
again using the learning function (see page 54). If they still do not
work, they may be in a special format that cannot be registered on
this receiver’s remote control. Operate the device using another
remote control.