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Bang & Olufsen BeoSound 9000 MKIII Manual De Servicio página 87

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START
Connect PL speakers. (Or
connect pin 2 & 4 in the
PL plug). Connect to mains.
Activate mains switch
The sledge must be at CD 1
Is there 9.5V AC
NO
NO
Stand by LED lit?
at the output of
90T1?
YES
F1+F2 OK ?
NO
Else remove 34P9.
Is the stby LED lit?
YES
YES
PCB35
(MOTOR CONTROL)
defective
Push "RADIO",
Push "CD",
NO
radio and display OK?
CD OK?
YES
Push RADIO.
NO
Supply for PCB01 OK?
YES
YES
PCB01 (FM/AM)
defective
The CD Mechanism must
Remove 34P10. Apply
NO
be set in position CD 1
NO
9V to 34P10 pin 12,13
Choose CD
Audible clamping?
Is the CD clamped?
(wait 30 sec)
YES
Clamper pos.
NO
inputs on 35IC2 OK?
YES
YES
PCB35
(MOTOR CONT.)
defective
Is the glass door
Remove 37P76.
NO
NO
able to open
Apply 12V to lid motor.
and close?
Does it move?
YES
YES
PCB35
(MOTOR CONTROL)
defective
Go to next page
Error tree
Check PCB4, 5
and 90T1
Remove 34P2.
Remove 34P13.
NO
NO
Light in stand by LED?
Light in stand by LED?
YES
YES
PCB32
PCB13
(IN/OUTPUT SELECT)
(SEC. KEYBOARD)
defective
defective
Does CD rotate,
NO
but no sound?
YES
PCB34
Signal on 32P26, pin 1
NO
(POWER SWITCH.)
& 2 OK? (digital signal)
defective
YES
PCB32
(IN/OUTPUT SELECT)
defective
Clamper motor
or connection to
motor defective
PCB22
(CLAMPER POS.)
defective
Consejos orientativos
El árbol de localización de fallos
aparece en el diagrama adjunto se ha
de interpretar como ayuda para
trabajos de servicio en el sistema
BeoSound 9000, ya que el producto
Motor/Gearbox
unit defective
tiene varias funciones que dependen
mutuamente una de otra.
El árbol de localización de fallos ha de
servir de pauta y está basado en
procedimientos de localización de fallos
a nivel de módulo. Los módulos que
5.61
5.61
Error tree
PCB34
Remove 34P14.
NO
(POWER SUPPLY)
Light in stand by LED?
defective
YES
PCB14
(IR RECEIVER)
defective
Is basis high on
NO
NO
34TR43 when
choosing a source?
YES
+12V on 34P2 pin 4
and -12V on 34P2
PCB41 (CD)
NO
pin 6, OK when
defective
choosing a source?
+9VCD on 34P6
NO
pin 8, OK
when choosing CD?
YES
PCB34
(POWER SUPPLY)
defective
aparecen como defectuosos son
módulos que contienen la función
averiada. Dado que las señales del
sistema BeoSound 9000, con
frecuencia, está interconectadas a
través de otros módulos, también
deben verifi carse las trayectorias de
señal a los módulos.
Reading guide
The error tree shown below is intended
looped through other modules, the
as an aid in connection with servicing
signal paths to the modules also have
BeoSound 9000, because the product
to be checked.
has a number of functions that are
NOTE:
dependent on each other.
The glass lid must either be on, or the hinge for
the lid must be in the open position.
In a fault situation the sledge may be unable to
The error tree is a guideline, and it
move to its end stop (CD 1 position).
is based on troubleshooting procedures
at module level. The modules which
End stop detection is important for the
are listed as defective are the modules
microprocessor when powering up the product.
Therefore the sledge should manually be
which contain the faulty function. Since
brought to the end stop position (the sledge is
the signals in BeoSound 9000 are often
released in TEST MODE 72).
Guida alla lettura
Il diagramma errori illustrato di seguito
costituisce un ausilio nelle operazioni di
assistenza su BeoSound 9000, poiché
l'apparecchio presenta molte funzioni
interdipendenti.
Check for
bus ERRORS
Il diagramma errori rappresenta una
(TESTMODE 27)
guida e si basa sulle procedure della
ricerca guasti a livello di moduli. I
Remove 34P2
PCB34
moduli elencati come difettosi sono i
+12V and -12V, OK
(POWER SUPPLY)
NO
moduli che contengono le funzioni
when choosing
defective
a source?
34F2 OK?
errate. Poiché i segnali in BeoSound
9000 spesso sono collegati ad anello
YES
mediante altri moduli, occorre
PCB32
controllare anche i percorsi dei segnali
(IN/OUTPUT SELECT)
per i moduli.
defective
NOTA:
Il coperchio di vetro deve essere aperto oppure
Remove 34P6
PCB34
la cerniera del coperchio deve essere in
NO
+9VCD, OK
(POWER SUPPLY)
posizione di apertura. In una situazione di
when choosing CD?
defective
errore, è possibile che la slitta non sia in grado
di spostarsi verso l'arresto fi ne (posizione CD 1).
YES
La rivelazione dell'arresto fi ne è importante per
il microprocessore durante l'accensione
PCB41 (CD)
defective
dell'apparecchio.
Quindi la slitta deve essere portata
manualmente nella posizione di arresto fi ne (la
slitta è rilasciata in TEST MODE 72).
NOTA: La tapa de vidrio debe estar colocada o
la bisagra de la tapa debe estar abierta.
En una situación de avería, el carro
transportador tal vez no pueda desplazarse a su
tope fi nal (posición de parada fi nal CD 1).
La detección de parada fi nal es importante para
el microprocesador a la hora de poner en
marcha el producto.
Por consiguiente, el carro transportador debe
colocarse manualmente en la posición de
parada fi nal (el carro transportador se libera en
el MODO DE PRUEBA 72).
5.61

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