User guide

ENGLISH ENGLISH
PROBLEMSANDSOLUTIONS
11
FLOWDIAGRAMLEGEND
FAULT
TEST SOLUTION
Theloudspeakers
havea
backgroundhum
Isthe
GROUNDLIFT
selectorintheOFF
position?
SettheselectoratON
toavoiddangerous
groundloops
Avoidinstallationcloseto
electricalequipmentwhichfrom
strongmagneticfields
(dimmers,transformers,etc.)
andusewellscreened(andif
possiblebalanced)connector
cables
YES
YES
YES YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
Theloudspeaker
outputsignal
distorted
IstheCLIPledlitred?
There’sanexternalproblem.
Checkthequalityofthe
signaldirectlyatthe
audiosource
Thesignalbeingfedintothe
amplifiermustbelowered.
Thevolumecontrolsenablethe
inputsignaltobesetatan
ideallevel,indicatedbythegreen
colouroftheCLIPled
Nosoundscome
fromthe
loudspeakersand
PROTECTledisred
Istheamplifier
veryhot?
Switchingtheamplifier
offandonagainafterafewminutes
doesthefaultstill
occur?
Amomentaryoverloadhas
occurredwhichhastripped
theprotectiondevices
Arethefrontpanelsair
ventsandthefans’outlets
freefromall
obstacles?
Theheatproducedbythepowercircuits
isdispersedbythefans,whichtake
inairthroughtheventsonthefront
panelandsentitout
throughrearpanel
Theamplifier’sfinalstages
haveburntout.
Contactanauthorized
assistancecentre
Whenthefinalstagereach
excessivelyhightemperaturesthe
electronicprotectionstrip,putting
thesystemonstandby
ThepowerON
indicatordoesn’t
lightup
Doesanotherunit
connectedtothesamepower
socketswitchon?
Checkthesocket’s
switchesandelectrical
connections
Hasthefuse
ontherearpanel
blown?
Contactan
authorizedservice
centre
Replacewith
anewfuse