Bang & Olufsen BeoSound Ouverture 2631 User manual

Bang&Olufsen
BeoSound Ouverture
Type 2631, 2632, 2633, 2634, 2635,
2636, 2637, 2638, 2639, 2640
SERVICE MANUAL

‘CONTENTS
Survey
of
modules
1
Specification
guidelines
for
service
use
12
Wiring
of
transformer
1-4
Brief
operation
quide
15
Diagrams
etc.
2
Explanation
of
diagram
24
Wiring
diagram
23
Block diagrams.
Diagrams
List
of
electrical
parts
..
3
List
of
mechanical
parts
..
4
Adjustments
and
repair
tips
ace
5
English German French
Adjustments.
51
5-20
5-40
Test
Mode
5-1
5-20 5-40
RF
adjustments.
5-1
5-20
5-40
AM
adjustments
541
5:20 5-40
FM
adjustments
..
54
5-20 5-40
Tuner
adjustments
54
5-20
5-40
Mechanical
adjustments,
Tape
recorder.
5-4
5-23
5-43
Electrical
adjustments,
Tape
recorder.
55
524
5-44
Electrical
adjustments,
CD.
57
5-26
5-46
Repair
tips
..
5-10
530
5-49
Dismantling
of PCB
under
tape
transport
mechanism
5-10
530
5-49
Replacement
of CD
transport
mechanism.
S41
531
5-50
Removal
of tape
recorder
transport
mechanism.
5-13
533
5-52
Wire
system
for
glass
dorrs
5-14
534
5-53
Test
functions..
5-16
5-36
©
5-55
Service
program
for
the
CD
section
547 537
5-56
IR
door
sensors,
PCB
6
518 538
5:57
Master
Link
Data
receiver/
transmitte
5-18
538
557
Wow
frequenci
519
539° 5:58
Disassembly
...
6
Insulation
test
..
7

Bang&Olufsen
1-1
SURVEY OF MODULES
1 FM/AM, RF, IF decoder a. diagr. A
page2-9
3 Microcomputer vo diag. |
page 2-19
4 Keyboard ..... ~ diagr. L
page 2-22
5 Display sononnnnnsnnmnnnnn diagr. L
page
2-22
6 IR Receiver and door sensOF cnn diagr. KM
page
2-21,
2-23
7 Tape data control
7 Tape AF and control...
Dolby a tape type logic... -
page
2-13,
= diagr. E
2-14
8 CD servo motor system ...
8 CD decoder......
9 Light and motor control .....0mnennnnnnn dlagr. M
page 2-23
SURVEY OF MODULES
12
Master
Link
Interface
diagr.
G
page
2-16
12 Input select and Pre-Amplifier diagr.H
page 2-17
12 Power supply oneness HAGE O
page 2-25
13 Master Link microcomputer .o.cccconn diagr. J
page 2-20
14
Master
Link
Audio
interface
occconn
diagr.
G
page
2-16
15 Transformer snmne Gage. O
page 2-25
49 Tne istvsncnnnenecenbn page 2-10
Headphone ..cccnnnnennnnnnnnnnnmnnn lage H
page 2-17
28 Light supply diagr. M
page 2-23
29 Radio Data System diagr.N
page 2-24
94 Tape Mechanism diagr. B, C.D
page 2-11, 2-12,2-13
97 CD Mechanism . diagr. E
page 2-14
97
> 13

1-2
SPECIFICATION GUIDELINES
1-2
SPECIFICATION GUIDELINES
Bang&Olufsen
SERVICE USE
BeoSound Ouverture
With FM and AM range and ROS
Type 2631 (EU), 2632 (GB), 2633 (USA-CON),
22634
(JAP),
2635
(AUS)
Tape
transport
:
‘With
FM'and
Ait
range
Type
2636
EU),
2637
(GB),
2638
USACON),
Search
rte
;
=
7
12639
(AP),
2640
(AUS)
Record
level
‘Auto
Record
Level
Operation
=
Direct
keypad
=e
Noise
reduction
7
Dolby
8
2.
Recommended
terminal
7
-
-
Tape
switch
z
"Auto
ferro/chrome/metal
=
=
=
—Beolink
1000
-
=
Tapehead
7
~
Amorphous
zs
Finish
a
Wow
and
tater
DIN
<015%
:
%
—=-
=
ae
Wow
and
futer,
WRMS
=
<008%
=
Preamplifier
section
=
-
~
7
Speed
deviation
=
e215
7
=
:
Total
harmonicdstorion
HF
eon
=
_
=
=
=
2
Response
vs.
frequency:
AUXin 20-20,000 He = 1 d8
input
serakiviyimpedances
~
7
m
:
‘
AUX
=
~
s
~
~~
200 mv
~
a
=e
_
Inputimpedanc
AUK
:
a
ar
art
‘Max.
input
signal,
AUX
7
:
20V
~
AUX, Aweighted > 80d
Channel
separation
10
kHz,
AUX
z
76048
Z
a
=
Bass
control
at
100
He
-
3968
a
_
=
-
Treble control at 10 KHZ 7 “2908 - Es s =
Output:
-
=
=
3 :
~
=
5
Headphones
a
=
7
~
41/2350
:
=
‘Tuner,
FM
section
-
7
-
_
-
7
=
FMrange
-
-
-
875-108
MHz
7
=
~
~ - : a 76-90 MHz f. Type 2634, 2639 - -
~
2
750
:
Usable
sensitivity
mono
14d8F-
av
7
-
Usable
sensitivity
stereo
19:d8F-2.5uV
50
dB
quiet
ity
mono
:
21
dBF-25nV
=
==
-
=
50
dB
quieting
sensitivity
ster
.
~
40d8f-
28.
-
-
Signal-to-noise
ratio
65
d8f
mono
7
73.48
-
7
-
Signalto
noise
ratio
65
dBF
stereo
66
d8
2,
Be
=
frequency
responce
30-1500
He
173
68
7
Distortion
at
65
dBf
r
mono
_
*
0.3%
=
=
bh,
Distortion
at
65:
fst
stereo:
_
7
0.3%
7
7
a
=
intermodulation
mono
ig
i.
a
01%
7
F
7
Intermodulation stereo
Stereo channel separation
Subcarrier produ
0.1%
LW 150-279 kHz
‘MW 520-1610 kHz
0» 724B,vIm (10 > Ani)
SIN ratio
Number of programmes
68
+
60
dBuVim
(2.5
+
imviem)
30
Distortion, ferro
Erasure
Erasure frequency
©® player
©, disc ypes
Frequency rnp
12 em (5"), 8em(@3")
20-20,000 Hz 20.3 di
nal-to-noise ratio > 90 d8/93 d8 A.weighted
Dynamic range 7 _ > 98 d8 2 7 -
Channel difference = = 2108 = = - -
Converter
system
_
7
=
~
2x16
bit
4x
oversampling
z=
=
Low
pass
filter
analog
a
=
~_
Bessel
a
> 6048
Damping
>
20,000
Hz
-
i=
0 degree
at 20-20,000
Hz
Phase error between L and R_
Connections
Master Link Pint
_ Data --0.25V
~ Pind Data+ +0.25V
Pin3_ MLSence 0.5V
NC.
Supply volta
‘Supply voltage 7 V + 15, stand-by 3V > 15V
Audiol
1Vbal., R, 22MM, R., 75.2
Pint@ Audiole
1Vbal., R, 22 MQ, R,,, 75.2
Pin 15 Audio R-
1V bal, R, 22 MQ, R,,, 75.0
Pin 16 Audio Rt
1 Vbal,, R, 22 MO, R,,, 75.2

Bang
&Olufsen
1-3 1-3
SPECIFICATION
GUIDELINES
SPECIFICATION
GUIDELINES
‘Audio Aux
> Pint Leftout -
2 = Pind GND
5.
4
Pin3
_Leftin
a
Pina Rightout =
3 i PinS Right in
4 Pin6 Datalink —
Pin? Notused
Power
Link
-
Power
up
-
- 7 GND
4 Left channel
—_ Speaker on a
3: i‘ — 7 Right channel =
“Datalink
7 6 a Data ground
i in& Power failure/Overload _
Headphones - “41V/2350 =
21 2 RIGHT —_—___—_— =
c
-e
(os
1
LerT
34
Mains 7 - - Cable included,
100 V AC, J type 2634, 2639
120 V AC, USA type 2633, 2638 -
Phase|
|»
230V
AC,
EU
type
2631,
2636
240 V AC, GB type 2632, 2637 =
Earth} | ° aes oe
Dimensions -
WxHxo - 31x 36x 16 em :
Power frequency 50-60 Hz
Power consumption _ -
Power consumption, Stand-by
Weight — ——=
Subject to change without notice

Bang&Olufsen

Bang &Olufsen
1-5
BRIEF OPERATION GUIDE
1-5
BRIEF OPERATION GUIDE
1-5
Brief operation g
For more detailed operation see User's guide.
Closeup operation:
Radio
Pressetting radio stations
Tape
Turn on the radio
UN
‘witches from FM to AM, or
Playing the tape
Starts playing the tape you
have loaded
Press 1 to start playing from
the very beginning of the tape
[At any time before you stop
the tape recorder
Press to return
the spot
where your recording started
Press to accept FM or AM
Press to search for a radio
station - up or down
the frequency band
Press to accept the station you
have found
Press to change the displayed
program number (1-30),
iM you lke
mA Press to store the radio station
fon the displayed program
umber
H you want to name the
program:
Press to reveal the characters
fone by one
‘Moves to the next character
position forwards or backwards
Keep writing the name you
want, using this method
Finally, press to store your new
radio program
Playing Radio programs
then
EWE #%055 10 step through your
or radio programs
then
Alternatively, key in the exact
program number you want
(130)
Switches the system to
stand-by
RECORD.
Turns” the tape tostart
playing the other side
Press to play the next track
Press to play the current track
again
Press twice to play the
previous track
‘Alternatively, key in the exact
track number you want to
Rewinds the tape
Fast forwards the tape
Press to pause the tape
recorder
resume playing
Switches the system to
stand-by
Instant recording on tape
Start playing the source you
Wish to record, for example
tadio
Press to make the tape
recorder ready for recording
Press agai
recording
Press to pause your recording
A pause of four seconds is
inserted on the tape
Press to resume recording
Press to stop the tape recorder
and return to controlling the
radio
Dolby NR* noise reduction
Press while the tape is playing
to see the current setting
Press again to switch Dolby NR
from on to off, or vice versa
Dolby NR is automatically reset
10 ON during recording,
9 8
Starts playing the CD you have
loaded
Press to play the next track
again
‘Alternatively, ey in the exact
theough
Hold down to search forward
towards the end of the CD
Hold down to search
backwards towards
the beginning of the CD
ma Press to pause playback
Press
to
resume
playing
Switches the system to
Setting the clock
Press to access the setup
Press once to display CLOCK?
Press to call up the builtin
clock
The time is displayed
Press to change the displayed
time, if necessary
Press to accept the displayed
displayed
Press to change the displayed
date and month, i necessary
Press to accept the date
The year is displayed
Press to change the displayed
=a
Press
to
accept
the
year
The display now reads STOF
Pres
store your new setting
Press to rate the volume
Press to lower the volume
Silences the speakers
immediately
Press again to recall the sound
Adjusting sound
The display reads SOUND?
Press to access the sound
adjustment function
Press
repeatedly
to
display
the
sound
cue
you
want
‘Then adjust the sound to your
liking
‘Adjusts balance to the left
Adjusts balance to the right
Raises or lowers the sound
levels; cuts the loudness
function in of out
Press repeatedly until STORE?
Is displayed
GES Press to store all the current
sound levels
I you haven't stored your
sound adjustment
Press any time to reset the
sound levels to their original
settings
Using the Beod
[RADIO
om
Turns on the radio
Starts the CO player
Starts the tape recorder
Press to step through your
radio programs, tracks on &
tape or a CO
Alternatively, key i the exact
‘number, using the number
keys
Fast forwards a tape
EID winds o tape
yellow Searches through a CD
‘green Searches backwards through a
o
Pauses playback any time
Press to resume playback
Raises the volume
Lowers the volume
Switches off
Option programming Beo4
hold
while pressing
Until the Beod display reads
opTions?
Until the display reads A:OPT
Disable the remote control
function
Enable the remote control
function
Option programming
Beolink 1000
Disable the remote control
function
Enable the remote contro!
function
* Trademark of Dolby Laboratories Licensing
Corporation.
Noise reduction system manufactured under
license from Dolby Laboratories Licensing
Corporation.

2-1
2-1
EXPLANATION OF DIAGRAM.
2-1
EXPLANATION OF DIAGRAM.
Bang &Olufsen
EXPLANATION OF DIAGRAM
Component print and coordi-
nate system
Control circuit
Wiring connections
INTERNAL CONNECTION ON ONE
DIAGRAM PAGE
CONNECTION TO ANOTHER
DIAGRAM PAGE
Supply Voltages
Ground symbols
symbol of safety
components
Type numbers of transistors and ICs are indicated on the diagrams. If the
position is followed by an asterisk the spare part number must always be
used because the component in question has been specially selected, e.g.
TR102*
The largest PCBs have component prints and a coordinate system on both
the print and the component side.
On the diagrams every component has a coordinate number. This
indicates in which coordinate on the PCB the component is situated. The
coordinate numbers are written in smaller print types than the position
numbers.
In certain control circuits the active mode is indicated by a function term
or by an abbreviation. This may be e.g. ST.BY.= low in the stand-by mode
or STBY. = high in the stand-by mode.
The wiring connections on the diagrams are assembled in ‘bundles’. The
individual wires are provided with one of the following codes:
ko» » ob
Internal connections on a diagram page are indicated by a number.
The bend of the wire indicates in wich direction the other end of the wire
is found.
DIAGRAM A DIAGRAM C
'
ao a aS
i : —_L1_L
A connection to another diagram page is indicated by a number as well as
bya letter of the diagram to which the connection leads.
All supply voltages in the diagrams are indicated by an arrow and a
voltage indication,
Four different ground symbols are used in the set.
AL
=srouna
cL
=Coarse
ground
chassis
‘When replacing components with this symbol, components with identical
part numbers must be used. The new component must be mounted in the
same way as the one replaced,
Measuring conditions
Caution
CD laserdiode
Lithium
battery
All DC voltages have been measured in relation to ground with a
voltmeter with an input impedance of 10 Mohms.
The
DC
voltages
are
stated
in
volts
(V),
e.g.
0.7V.
All
oscillograms
and
AC
voltages
have
been
measured
in relation
to
ground
with
an oscilloscope
or a voltmeter
with
an input
resistance
of
1Mohm.
AC voltages are stated in millivolts (mV), e.g. 660mV.
The
use
of
any
controls,
adjustments
or
procedures
other
than
those
specified
herein
may result in hazardous
radiation
exposure.
IS
DIGITAL AUDIO
The black and yellow label on the compact disc player serves as a warning
that
the
apparatus
contains
a
laser
system
and
is
classified
as
a
class
1
laser product. The apparatus must be opend by qualified servicemen only.
Wavelenght 780 nm #20 nm, 30°C
Effect 2 mW 20.1 mW, 30°C
ADVARSEL
LITHIUMBATTERI - EKSPLOSIONSFARE
\UDSKIFTRING MA KUN FORETAGES AF EN SAGKYNDIG
(86 SOM BESKREVET SERVICE MANUAL
WARNING
UTHIUM BATTERY - RISK OF EXPLOSION
TO BE REPLACED BY QUALIFIE SERVICEMAN ONLY
TAND AS DESCRIBED IN THE MANUAL
WARNING
Short-circuit
and
overcharging
of
some
types
of
lithium
batteries
may
result in a violent explosion.
‘When
replacing
the
lithium
battery
in
this
set,
note
the
following:
Use
only
batteries
at
the
same
make
and
type
as
mentioned
in
this
service
manual
(see
page
3-X).
Place the battery exactly like the old one.

Bang &Olufsen
2-2
EXPLANATION OF DIAGRAM
2-2
EXPLANATION OF DIAGRAM.
Explanation of the fuse
symboles used in the set
nation des symboles de
fusible utilisés dans l’appa
Replace
with
the
same
type
1
ampere
250
volts
quick
acting
fuse.
Replace with the same type 2.5 ampere 250 volts slow acting fuse.
rary
4B
Remplacer par un fusible rapide de méme type et de 1 ampéres 250 volts.
zavtT
Remplacer par un fusible retardé de méme type et de 2.5 ampéres 250
volts.
Ese

2-3 2-3 2-3 Bang &Olufsen
WIRING DIAGRAM WIRING DIAGRAM,
WIRING DIAGRAM
Pa
PI3i
9
DIAGRAM
J
Tee
be
99,
37
_
cD
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AND
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KEYBOARD
MECHANISM.
a
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DIAGRAM KANO M H ico

Bang&Olufsen
2-4 2-4 2-4
BLOCK
DIAGRAM
BLOCK
DIAGRAM
BLOCK
DIAGRAM
FOR TUNER
Tc BUS
(opsrtinerin!
al gi
al
&
el 3
BLS
acc
10.762
fi
if
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DIAGRAM
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STROBE
MASTER

2-5
2-5 2-5 Bang &Olufsen
BLOCK DIAGRAM BLOCK DIAGRAM
BLOCK DIAGRAM FOR TAPE
uypenvit
TEL
1a2s
oun
DOWER
FAT
care
2.
t ——
sia TAPE LEADER lee (re neve
4_casserte
pecisrer
>
6 REC LOCK >
REC
LOCK
<
|
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SOLENOIDE PLAYS] SPEED!
Tice
7RI98
COMPERATOR
wc
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RecrsTeR
one
UNPERMIT
LEVEL,
7IC20-14
5
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se < a
PURSE
ari
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Pav
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4
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mae
PAUSE
INFO
(2548),
uC
TROBE
1
cup
SER
LepAR-=—t-—>
REC
MUTE
Saree
DATA REGISTER t—> REC/SEARCI
BUTE:
——
8VREF
voy
on/OFF
——
BIAS
STOP
TICIO/
11
ON/OFF
PLAY/REC
FILTER
e728 74
eres:
7c13
2
RECORD
LF
R.
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REC
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Press fc 7049
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Bao
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DIAGRAM X

Bang&Olufsen
2-6
2-6 2-6
BLOCK DIAGRAM BLOCK DIAGRAM.
BLOCK DIAGRAM FOR CD
ANALOG FILTER

2-7
2-7
2-7
Bang
&Olufsen
BLOCK DIAGRAM BLOCK DIAGRAM.
BLOCK DIAGRAM FOR SYSTEM CONTROL
rec
mutes
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Bang &Olufsen
2-8
BLOCK DIAGRAM
2
BLOCK DIAGRAM.
BLOCK
DIAGRAM
FOR
POWER
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2-9 2-9 2-9 Bang&Olufsen
DIAGRAM A DIAGRAM A
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2-10 2-10
2-10
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2-11
2-11
2-11
Bang
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Bang&Olufsen
2-12
DIAGRAM C
2-12
DIAGRAM C
2-12
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2-13 2-13 2-13 Bang &Olufsen
DIAGRAM D DIAGRAM D
DIAGRAM D botsy aNp TYPE LoGic
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