Bang and 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

90*/99

87*/ 89

* for CD PRO MKII

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

Wiring of transformer

Wiring of transformer, PCB15

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

T1p

30V

L1p

0.4mH

C13p

D10

TF1

1000µ

120V

100V

230V

100V

120V

240V

120V

Type 2672, 2675 GB, AUS 240V~

L1p

0.4mH

40V

C13p

1000µ

D10

TF1

T1p

120V

100V

230V

100V

120V

240V

120V

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

Wiring of transformer

T1p

1.5

120V

R1p

3M3

L1p

0.4mH

C13p

D10

TF1

1000µ

120V

100V

230V

100V

120V

240V

120V

Type 2674 JPN 100V~

100V

L1p

0.4mH

T1p

C13p

D10

TF1

1000µ

120V

100V

230V

100V

120V

240V

120V

1.6 Brief operation guide

Brief operation guide

For more detailed operation see User’s guide

Tune in radio stations

RADIO

TUNE

FM ?

PLAY

FM 88.9

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

•

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

PLAY

STEREO ?

PLAY

P 15 ?

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

0 – 9

STOP

PLAY

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

0 – 9

PLAY

23 AUG

PLAY

2000

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

STOP

•

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

then

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

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

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

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

DIAGRAM C

1220

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.