Tips; Troubleshooting - VINCENT SA-93 PLUS Manuel D'utilisation

SA-93Plus_end 05.10.2006 15:24 Uhr
The mute function can be activated at the pre-amplifier front panel or using the remote controller buttons.
It cuts off the pre-amplifier output signal and thereby silences loudspeakers and headphones of your
system. The next push at the button will recover the original volume.
MUTE
Mute speakers
or headphones
The corresponding button activates an output level attenuation of 10dB. This Gain adjustment can only be
made using the corresponding remote controller buttons. This may be of use when the pre-amplifier is com-
bined with a main amplifier of high sensitivity, for example the Vincent SP-991. In everyday use this
button must not be pressed!
Adjust to main amplifiers with
high sensitivity
Burn in / Warm up
Your audio components need a certain time period
until they reach maximum performance. The dura-
tion of this „warm up" time is very different for the
various elements of your audio system. Higher and
homogeneous sound quality is achieved while
keeping the device switched on.
Your audio specialist dealer has enough
experience to give you more information.
Net frequency noise
Some audio source devices may together with the
amplifier cause a humming noise at powerline fre-
quency audible from your speakers. Usually its
volume is variable with the volume setting of the
amplifier.
This is no sign of a defect or fault of your audio
products but has to be eliminated.
Generally, every wall-powered device connected
to the ground wire of the power plug can cause
this problem when connected to the amplifier.
Experience shows that this problem is mainly cau-
sed by antenna-connected components (as TV-sets
28 Vincent
Seite 28
Display
MUTING
Display
GAIN
GAIN -10DB

TIPS

or Tuners), personal computers, electrostatic loud-
speakers, subwoofers, record players or headpho-
ne amplifiers that are connected to the audio
inputs of the amplifier. Another possible reason for
humming noise is electromagnetic interference of
other components' power supplies with pick-up-
systems of record players (change the place of the
record player for a test).
Some main amplifiers are equipped with a
„Ground Lift" switch. If it is activated, ground
potential of the chassis and the protective ground
wire are being separated from the central signal
ground point. The protective ground wire keeps its
function. Sometimes this helps prevent noise cau-
sed by errors in grounding.
If the problem occurs and cannot be solved by
youself your audio specialist dealer will help you

TROUBLESHOOTING

Symptom Possible reason
No function after
Power cable not connected to an active
wall outlet
switching on
Power cable not connected tight to
wall outlet or chassis jack
Power cable defective
Blown Fuse
Volume setting too low
No playback,
pre-amplifier display
Not the desired input channel has been chosen
is functional
You did not (or not correctly) connect the
output of the source device oder not to the
desired input connector of the pre-amplifier
Source device does not give output signal
You did not (or not correctly) connect
the main amplifier, or switched it off
Speaker cable connections to the main
amplifier are not correct or speakercable
damaged
One channel play One of the speaker cables has not or not
correctly been connected, or defective
back only
speaker cable
One of the signal cables between pre-
amplifier and main amplifier has not or not
correctly been connected, or defective signal cable
One of the signal cables between Source and
pre-amplifier has not or not correctly been
connected, or defective signal cable
The balance setting is extreme
Remote commands
No batteries or used-up cells in the remote set
have no effect
Line of sight between remote set and audio
device is blocked or maximum distance is
exceeded or commands given from a too
large angle
Device switched off
Low frequency hum-
See previous page
ming noise audible
Possible solution
Connect the power cable to an active
wall outlet
Press the power plugs tight into the wall
outlet and the device's power connector
Change against an adequate power cable
Change fuse
Carefully increase the volume
Revise your selection
Check and correct the connections
Start the playback of the source device
Check connections and function of the
main amplifier
Check and revise speaker cables and their
connections
Check speaker cables and their connections
on both sides
Check signal cables and their connections on
both sides
Check signal cables and their connections on
both sides
Correct this setting
Check and replace battery cells if necessary
Try and use remote set only at free line of
sight inside the radius of maximum distance
facing the front panel
Device switched on
Vincent 29