Bang Olufsen Beosound 3000 Service Manual

BeoSound 3000

Type 2671, 2672, 2673, 2674, 2675, 2676, 2677, 2680

Service Manual
English, German, French, Italian, Spanish

illustration

1.1Survey of modules

2 Interface f/µPH8 .................................................. diagram E

page 2.14

3 µPH8 Microcomputer ......................................... diagram E

page 2.14

5 Display ............................................................ diagram F, M

page 2.15, 2.25

9 Light and motor control .................................... diagram F

page 2.15

12 Power Supply, Input select & Pre-amp. .....diagram G, H, I

page 2.17, 2.18, 2.19

14 Master Link Audio interface ............................. diagram H

page 2.18

15 Transformer ..........................................................diagram I

page 2.19

18 Headphone ........................................................ diagram G

page 2.17

20 IR receiver and left door sensor ...................... diagram F, J

page 2.15, 2.21

21 Door sensor right .................................................diagram J

page 2.21

28 Light supply ........................................................ diagram F

page 2.15

86 Tuner-FM/AM-RDS-Stereo decoder ...... diagram A, B, C, D

page 2.9, 2.10, 2.11, 2.12

89 Interface f/CD PRO MKI ......................................diagram K

page 2.23

99 CD PRO MKI ........................................................ diagram L

page 2.24

9

20

90*/99

5

87*/
89

21

18

* for CD PRO MKII

28

3

2

15

86

14

12

1.2

SPECIFICATION GUIDELINES FOR SERVICE USE BeoSound 3000

With FM, AM and RDS Type 2671 EU (230V)
Type 2672 GB (240V)
Type 2673 USA-CDN (120V)
Type 2674 J (100V)
Type 2675 AUS (240V)
Type 2676 TWN (120V)
Type 2677 KOR (220V)
Type 2680 LAT (230V)

Preamplifi er section

Total harmonic distortion + Noise R,L < 0.1%/1 kHz
Response vs. frequency:
AUX in 20-20,000Hz ±1dB
Input sensitivity/impedance
AUX 200 mV
Input impedance, AUX >22 kΩ
Max. input signal, AUX 2.0 V
Signal-to-noise ratio:
AUX, A-weighted >80 dB
Channel separation 10kHz, AUX >60 dB
Channel unballance ±1.5 dB
Bass control at 100Hz ±9 dB
Treble control at 10kHz ±9 dB
Output:
Source seperation >65 dB
Tone regulation Bass, 100 Hz 9.0 dB ± 2 dB
Tone regulation Treble 10 kHz 9.0 dB ± 2 dB
Headphones 3.5 V / 235 Ω

Specifi cation guidelines

Tuner, FM section

FM range (50 kHz grid) 87.5-108 MHz
FM range for type 2674 - Japan 76-90 MHz
FM aerial impedance 75 Ω
Usable sensitivity mono 14 dBf - 1.4 µV
Usable sensitivity stereo 19 dBf - 2.5 µV
50 dB quieting sensitivity mono 21 dBf - 2.5 µV
50 dB quieting sensitivity stereo 40 dBf - 28 µV
Signal-to-noise ratio mono 68 dB
Signal-to-noise ratio stereo 62 dB
Frequency response stereo 30 - 15,000 Hz +1/-3 dB
THD + noise mono 0.63 %
THD + noise stereo 0.6 %
Intermodulation distortion stereo 50 dB
Stereo channel separation 35 dB
Subcarrier product rejection 50 dB, stereo

Tuner, AM section

AM range EU (9 kHz grid) LW 153 - 279 kHz
MW 522 - 1611 kHz
GB (9 kHz grid) LW 153 - 279 kHz
MW 522 - 1611 kHz
USA MW (10 kHz grid) 520 kHz - 1710 kHz
Japan MW (9 kHz grid) 522 kHz - 1629 kHz
AUS MW (9 kHz grid) 522 kHz - 1611 kHz
Taiwan MW (9 kHz grid) 522 kHz - 1611 kHz
Korea MW (9 kHz grid) 522 kHz - 1611 kHz

LW sensitivity 20 dB S/N ratio 80 - 72 dBµV/m (10 - 4 mV/m) TYP 4mV/meter
MW sensitivity 20 dB S/N ratio 68 - 60 dBµV/m (2.5 - 1mV/m) TYP 2mV/meter
Number of programmes 60

IR Operation Beo4

Specifi cation guidelines

CD player

CD, disc types 12 cm (5”), 8 cm (3”)
Frequency response 20 - 20,000 Hz ±1 dB
SNR (digital zero) >96 dB / 101 dB A-weighted
Dynamic range >98 dB
Channel difference ±0.3 dB
D/A converter Bitstream + Analog fi lter

Dimensions

W x H x D / Weight 32 x 36 x 16 cm / 7 kg
Cabinet fi nish Black / aluminium
Power consumption Typical 23 watts / stand-by 3 watts

Accessories

Type 2051 Stand, silver, black, blue, green, red
Type 2052 Center wall bracket, black
Type 2087 System wall bracket, black
V-antenna with coax cable 8720039
AM loop antenna 8720043

Connections

Master Link Pin 1 Data- -0.25V
Pin 2 Data+ +0.25V
Pin 3 ML sence 0-5V
Pin 4-10 N.C.
Pin 11 Supply voltage -7V > -15V, stand-by -3V > -15V
Pin 12 Supply voltage 7V > 15V, stand-by 3V > 15V
Pin 13 Audio L­ 1V bal., R
Pin 14 Audio L+
1V bal., Rin 2.2MΩ, Rout 75Ω
Pin 15 Audio R­ 1V bal., Rin 2.2MΩ, Rout 75Ω
Pin 16 Audio R+
1V bal., Rin 2.2MΩ, Rout 75Ω

in 2.2MΩ, Rout 75Ω

1.3

Audio Aux Link Pin 1 Audio L out 1V RMS, Rout 1KΩ
Pin 2 GND
Pin 3 Audio L in 0.25V RMS to 2V RMS, Rin 47KΩ
Pin 4 Audio R out 1V RMS, Rout 1KΩ
Pin 5 Audio R in 0.25V RMS to 2V RMS, Rin 47KΩ
Pin 6-7 Not used

Power Link Power up (ON = >2.7V -1mA)
Pin 2 Signal GND
Pin 3 Audio L out 0V to 2V RMS
Pin 4 Speaker ON (ON = >2.7V -1mA)
Pin 5 Audio R out 0V to 2V RMS
Pin 6 Datalink out (High = >4V, Low = <0.2V)
Pin 7 Data GND
Pin 8 PL+ ON

Headphones 4.1V / 235Ω

Mains Cable included,
100V AC, J type 2674
120V AC, USA-CDN type 2673-2676
220V AC, KOR type 2677
230V AC, EU-LAT type 2671-2680
240V AC, GB-AUS type 2672-2675

Subject to change without notice

1.4

2

2

Wiring of transformer

Wiring of transformer, PCB15

Type 2671, 2677, 2680
EU, LAT 230V~
KOR 220V~

T1p

1B

16

15

30V

L1p

0.4mH

12

1

3

2

1C

C13p

D9

D10

TF1

1C

1C

1C

1000µ

4

8

6

7

5

14

11

10

13

9

120V

100V

230V

100V

120V

240V

120V

Type 2672, 2675
GB, AUS 240V~

L1p

0.4mH

1C

40V

C13p

1000µ

D10

D9

TF1

1C

1C

1C

T1p

1B

1

3

2

4

8

6

7

5

16

15

12

14

11

10

13

120V

100V

230V

100V

120V

240V

120V

9

Type 2673, 2676
USA-CDN, TWN 120V~

Wiring of transformer

T1p

1B

16

15

1.5

120V

R1p

1B

3M3

L1p

0.4mH

12

1

3

2

1C

C13p

D9

D10

TF1

1C

1C

1C

1000µ

4

8

6

7

5

14

11

10

13

9

120V

100V

230V

100V

120V

240V

120V

Type 2674
JPN 100V~

100V

L1p

0.4mH

T1p

1B

1

3

2

1C

C13p

D9

D10

TF1

1C

1C

1C

1000µ

4

8

6

7

5

16

15

12

14

11

10

13

120V

100V

230V

100V

120V

240V

120V

9

1.6 Brief operation guide

Brief operation guide

For more detailed operation see
User’s guide

Tune in radio stations

RADIO

TUNE

FM ?

m

p

PLAY

FM 88.9

m

p

0 – 9

Press RADIO to switch
on the radio

Press TUNE to access the
tuning function. FM ?
appears

Switches from FM to
AM, or vice versa

Press PLAY to select AM
or FM. FM or AM and
the current frequency
appears

Press to search for a
radio station – up or
down the frequency
band

Or, key in the exact
frequency

Switch on the radio

RADIO

0 – 9

m

p

•

r

u

MUTE

Note: Pressing 0 will swap between present and
previous radio station

Press RADIO to switch
on the radio

Use the number keys to
select a stored station

Step through all stored
stations

Switch to standby

Adjust the volume up or
down

Silences the speakers
immediately. Press again
to recall the sound

PLAY

FINE 0

m

p

PLAY

STEREO ?

m

p

PLAY

P 15 ?

m

p

0 – 9

PLAY

STORED

Press PLAY to accept*.
FINE 0 appears

Press to fi ne tune, if
necessary

Press PLAY to accept.
STEREO ? appears

Switches from STEREO
to MONO

Press PLAY to accept –
the fi rst available
program number
appears

Press to switch to a
different program
number

Or, key in the program
number you want

Press PLAY to store the
station on the displayed
program number.
STORED appears,
indicating that the
station is stored

Play a CD

CD

0 – 9

m

p

STOP

PLAY

n

l

Plays the CD in the
compartment

Plays specifi c track
numbers

Plays the next track

Plays the previous track

Pauses playing

Resumes playing

Searches forwards on
the CD

Searches backwards on
the CD

Keep the button pressed
down until you have
reached the point you
want

*Note: When the requested station is found, you

can skip the fi ne tune and stereo/mono selection
by pressing STORE instead of PLAY. Now just enter
a program number and press PLAY or STORE to
store the station.

Brief operation guide

1.7

Set the built-in clock

CLOCK

14 : 45

m

p

0 – 9

PLAY

23 AUG

m

p

PLAY

2000

m

p

PLAY

STORE ?

STORE

STORED

Press CLOCK to access
the clock function. The
time appears

Press to change to the
exact time, if necessary

Alternatively key in the
exact time

Press PLAY to accept.

The date appears

Press to change the date,
if necessary

Press PLAY to accept.

The year appears

Press to change the year,
if necessary

Press PLAY to accept.

STORE ? appears

Press STORE to store the
new setting.

STORED appears

Using the Beo4

RADIO

CD

m

or

p

n

or

l

STOP

GO

r

u

•

Turns on the radio

Starts the CD player

Press to step through
your radio programs or

tracks on a CD

Alternatively, key in the

exact number, using the
number keys

Searches through a CD

Searches backwards
through a CD

Pauses playback any time

Press to resume
playback

Raises the volume

Lowers the volume

Switches off

Option programming

For the Beo4 terminal the key sequence is the following:

•

then

LIST

GO

LIST

then

1

Press and hold

Press to access the setup function. The Beo4 display reads [OPTION?] - let go of
both buttons

Press to access Option-programming

Press to display [V.OPT] CTV, or
[A.OPT] audio, or
[L.OPT] link room products

Key in the number of the approiate Option, e.g. 1

The digit sequence to be used depends on the setup.

Option 0 = No IR reception
Option 1 = Two IR-eyes in the same main room
Option 2 = One IR-eye in the main room

2.1

Explanation of diagram

Explanation of diagram

Component print and coordinate system

Control circuit

Wiring connections

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 ST.BY. = 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:

INTERNAL CONNECTION ON ONE DIAGRAM PAGE

12

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.

CONNECTION TO ANOTHER DIAGRAM PAGE

DIAGRAM A

C3

C32 A32

A connection to another diagram page is indicated by a number as well as by a
letter of the diagram to which the connection leads.

Supply Voltages

All supply voltages in the diagrams are indicated by an arrow and a voltage indication.

Ground symbols

Three different ground symbols are used in the set.

= RF - OSC - SH - IF1 - IF2 - A

= Chassis

20

DIAGRAM C

1220

A3

Symbol of safety components

= D

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

Explanation of diagram

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 specifi ed
herein may result in hazardous radiation exposure.

2.2

CD laserdiode

Lithium battery

CLASS 1

COMPACT

LASER PRODUCT

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 classifi ed as a class 1 laser product. The
apparatus must be opend by qualifi ed servicemen only.

Wavelenght 780 nm ±20 nm, 30ºC
Effect 2 mW ±0.1 mW, 30ºC

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 3.1).
Place the battery exactly like the old one.

Explanation of the fuse symboles used in the set

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.

Explanation des symboles de fusible utilisés dans l’appareil

Remplacer par un fusible rapide de même type et de 1 ampères 250 volts.

Remplacer par un fusible retardè de même type et de 2.5 ampères 250 volts.

Wiring diagram

2.4 Wiring diagramWiring diagram 2.4

2.4

2.5

Block diagram for frontend tuner

2.5 Block diagramBlock diagram 2.5

AM block diagram

2.6 Block diagramBlock diagram 2.6

2.6

2.7

Block diagram for CD PRO

2.7 Block diagramBlock diagram 2.7

EYEPATTERN

2.5V

0.5µs/DIV

1.3V

Block diagram for system key controle

2.8 Block diagramBlock diagram 2.8 2.8

2.9

Diagram A – Frontend tuner PCB drawing for PCB86 see page 2.13

2.9 Diagram ADiagram A 2.9

Diagram B – FM/AM Detector PCB drawing for PCB86 see page 2.13

2.10 Diagram BDiagram B 2.10

2.10

2.11

Diagram C – Stereo decoder and power section PCB drawing for PCB86 see page 2.13

2.11 Diagram CDiagram C 2.11

Diagram D – RDS, µP & IIC bus fi lter PCB drawing for PCB86 see page 2.13

2.12 Diagram DDiagram D 2.12

2.12

PCB86, Tuner-FM/AM-RDS-Stereo decoder

2.13 PCB drawingPCB drawing 2.132.13

Diagram E – Interface for µP & µPH8 PCB drawing for PCB2 see page 2.16

2.14 Diagram EDiagram E 2.14

2.14