Bang Olufsen Beolab 150 Service Manual
BatU&0uberl
4-48
BEOLAE
150, TWE
L721" L722, L723,1724,1725
II{DHOLD
Diagrammer ...:...
Halvlederoversigt .
Elektrisk styHiste
Mekanisk styHiste
Justeringer
Tekniske specifikationer
.. .. ......
Servicetips
Isolationstest .....
DIAGMIT{FORTU$ING
Pi
diagrammet
storer og IC'er i de tilfelde
entydrgt for komponenters
er der angivet typenumre
hvor typenummeret er
placering
f,eks. TR20/BC 5578
positionsnummeret
Hvis
reservedelsnummeret benyttes, da denne
skal
komponent er specielt
er efterfulgt af en stjerne
udvalgt - f.eks. TR1021
. 4-48
.. 4-50
..
..
... 4-57
... 4-58
.. 4-61
pi
transi-
i kredslobet
4-52
4-54
4-57
-
CONIENTS
Circuit diagrams
Semi-conductorsi
List of electrical
List of mechanical
....
parts
parts
.
.
Adjustnents
Technical specifications
Service tips
Insulation test ..
E)(PIITNATION OF DIAGRAM
Type numbers of transistors
indicated
type number
component in a circuitry - e.g. TR20/BC 5578.
If the
spare
component has been expecially"selected
TR102*.
..
on the
position
part
number must
diagram in those cases
is unambiguous for the
number
....
....... 4-58
....
and IC's have been
where the
position
is followed by an asterisk the
used because this
be
-
e.g.
4-48
4-50
4-52
4-54
4-57
4-57
4-61
of the
Koordinatsptem
De stsrste
system.
printplader
Komponenterne
diagrammet
forslmet med en koordinatbetegnelse,
er forsynet med et koordinat-
pl
som forteller i hvilket felt
placeret
(mindre
skrifftype end
f.eks. B3).
kdningsfoftindels€r
pi
Ledningsforbindelser
"bundter*.
koder,
De enkelte ledninger er
der fortaller hvortil de
diagrammet er samlet
INTERN FORBINDELSE
PA EN DTAGMMSIDE
Interne forbindelser
et tal. Knakket
den anden ende af
pi
en diagramside angives
pl
ledningen
ledningen findes.
printplader
disse
pi printpladen
de er
positionsnummeret
forsynet med
gtr.
llrl
1220n1n
\\//
viser i hvilken retning
er
pA
i
med
System
The largest PC-boards
ordinate system.
are
indicating in what
-
board
B3).
Wiring C.onnections
The wiring connections
assembled
coded to
of
Co-ordinates
provided
(smaller
in
indicate
have been
The components on these PC-boards
grid
with
typing than
"bundles".
to
reference on the diagram
a
gnd
they are
position
on the diagram are
The individual
where they are leading.
INTERNAL CONNECTION
ON ONE
Internal connections on a
indicated by a number. The bend of the
in which direction the other end of the
found.
diagram
provided
positioned
numbers - e.g.
with a co-
on the PG
wires are
DIAGMM PAGE
page
are
wire indicates
wire mav be
4-48
\
4-48
Forsyningsspeqdingetr
pil
En
og spandingen viser, hvor forsyningsspendiq- An
gerne gfr
Eksempel:
spendingen angiver det antal stedet, spandingen
ind
Symbol for sikkerhedskomponenter
ind i
pi
denne diagramside. voltages in this diagram.
prinl
et
(7
CON.) feks. ved
siden af
forsynings- Example:
gtr
Supply Voltage
arrow and the
voltages are fed to a PCB.
(7
indicates the number of
for Safety Components
voltage
CON.) next to the supply
places
show
where
where
the
voltage
find
to
d-
Ved
udskiftrting af komponenter med
skal der anvends komponenter med samme reserve- nents with identical
delsnummer. Den nye komponent skal monteres
samme mtde som
den udskiftede. as the one replaced
dette symbol
pi
uArJBBrnqCBrsBn
Alle DC spandinger er milt i forhold
med voltrneter med
10 Mohm.
Spendingerne er milt uden signaltilforing. The voltages have been measured without
en indgangsmodstand
til stel,
pA ground
When replacing
The new
MEAST'RING
All
10 Mohms.
of signal.
component must be fitted in the same way
coNDITIoNS
voltages
DC
with voltneter with
components with this symbol compo-
part
numbers are to be used.
have been measured in relation
an input resistance of
supply
the
to
any supply
4-49
4-49
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Bang&0uHt
SEITfi COITDUCTORS
4-50
Transistors
1TR3 %8320396 24
24
24
1TR6
1TR7
1TR8lTRlO
lTR1l
1TR12
1TR15
832%il 17 BF 423 1TR25-
8320152 20 BC212B|BK
17
20 BC
18
20 BC
27 2SA
8320641 sc 2240
8320108 20 BC1728
M BC
17 BC 18381
20
20 BC
8320152 20 BC212B/BK 2TR4
17
20 BC 2518
18 BC 3078
m
27 2SA
MPF 4392 1TR23 8320646
4392
2N
2N 5639 1TR24
1TR27
BC212BL 1TR28 8320646
2518
BC 3078 1TR29
5578
844
1TR301TR32
8320643 2SC 2238A
8320645 2SC 3281
8320642
8320644
t$4
tt4
GR
2TR1
2TR2
1838/BK
BC 2388
5488 2TR3 8320595 20 BC
8320108 20 BC 1728
20 BC 1838/BK
17 BC 1838L
20
20
832U52 m BC
BC212BL 17
20 BC
18 BC 3078
Bc557B
844 27
20
BF 858
BF 858
2SA 968A
2SA 1302
BC 2388
BC 5488
337-40
?|AB/BK
BC212BL
2518
BC 5578
2SA 844
.
1TR16
1TR17
1TR18
8320454
8320108 20 BC1728. 2TR8-
17
BF 423 2TR5
2TR6
20 BC 183B/BK 2TR1O
17
BC 183BL
m Bc238B
20 BC 5488
7TR1-
8320152
20
BC2lzBtBK 24
7TR3
17 rc212B,L
20 BC 2518
18 BC
m
27
3078
Bc
5578
2SA 844
8320108 20 BC 1728
M BC 183B/BK
17 BC 1838L
Bc238B
m
20 BC 5488
'a8320396
24 MPF4392
2N 4392
24 2N
5639
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