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

Survey of modules	1.1

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	90*/99
	87*/
	89	28
	5
20			15	86
		3		14
	21
	18	2		12
	* for CD PRO MKII

1.2	Specification guidelines
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)
Preamplifier 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
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

									Specification guidelines		1.3
	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 filter
	Dimensions
	W x H x D / Weight							32 x 36 x 16 cm / 7 kg
	Cabinet finish							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., Rin 2.2MΩ	, Rout 75Ω
								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
	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

1.4Wiring of transformer

Wiring of transformer, PCB15
Type 2671, 2677, 2680
EU, LAT 230V~
KOR 220V~			T1p
				16
			1B
				15
				12
		1
		3		14
		2		11
L1p
0.4mH	1C	4
				10
230V
	C13p	8
	1000µ	TF1
		1C
	D10	6
	1C
	D9	7
	1C
		5
				13
				9

120V

100V

120V

240V

230V

100V

120V

Type 2672, 2675

GB, AUS 240V~

			T1p	16
			1B
				15
				12
		1
		3		14
		2		11
L1p
0.4mH	1C	4
				10
240V
	C13p	8
	1000µ	TF1
		1C
	D10	6
	1C
	D9	7
	1C
		5
				13
				9

120V

100V

120V

240V

230V

100V

120V

Wiring of transformer	1.5

Type 2673, 2676
USA-CDN, TWN 120V~
				T1p	16
				1B
					15
					12
			1
			3		14
			2		11
	L1p
	0.4mH	1C	4
					10
120V
		C13p	8
		1000µ	TF1
			1C
	1B	D10	6
R1p	3M3
		1C
		D9	7
		1C
			5
					13
					9

120V

100V

120V

240V

230V

100V

120V

Type 2674

JPN 100V~

			T1p	16
			1B
				15
				12
		1
		3		14
		2		11
L1p
0.4mH	1C	4
				10
100V
	C13p	8
	1000µ	TF1
		1C
	D10	6
	1C
	D9	7
	1C
		5
				13
				9

120V

100V

120V

240V

230V

100V

120V

1.6Brief operation guide

Brief operation guide

For more detailed operation see User’s guide

Tune in radio stations			Switch on the radio
	RADIO	Press RADIO to switch	RADIO	Press RADIO to switch
		on the radio		on the radio
	TUNE	Press TUNE to access the	0 – 9	Use the number keys to
		tuning function. FM ?		select a stored station
	FM ?
		appears

m	Switches from FM to
p	AM, or vice versa
PLAY	Press PLAY to select AM
	or FM. FM or AM and
FM 88.9
	the current frequency
	appears
m	Press to search for a

pradio station – up or down the frequency band

m	Step through all stored
p	stations

•Switch to standby

r	Adjust the volume up or
u	down
MUTE	Silences the speakers
	immediately. Press again
	to recall the sound

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

0 – 9	Or, key in the exact
	frequency
PLAY	Press PLAY to accept*.
	FINE 0 appears
FINE 0
m	Press to fine tune, if
p	necessary
PLAY	Press PLAY to accept.
	STEREO ? appears
STEREO ?

Play a CD

CD	Plays the CD in the
	compartment
0 – 9	Plays specific track
	numbers

		m	Plays the next track
m	Switches from STEREO
p	to MONO	p	Plays the previous track
PLAY	Press PLAY to accept –	STOP	Pauses playing
	the first available
P 15 ?
	program number	PLAY	Resumes playing
	appears
		n	Searches forwards on
m	Press to switch to a		the CD
p	different program
	number	l	Searches backwards on
			the CD
0 – 9	Or, key in the program
	number you want		Keep the button pressed
			down until you have
PLAY	Press PLAY to store the		reached the point you
	station on the displayed		want
STORED
	program number.
	STORED appears,
	indicating that the
	station is stored

*Note: When the requested station is found, you can skip the fine 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

Using the Beo4

CLOCK

14 : 45

m

p

0 – 9

PLAY

23 AUG

m

p

PLAY

2000

m

p

PLAY

STORE ?

STORE

STORED

Press CLOCK to access	RADIO	Turns on the radio
the clock function. The
time appears	CD	Starts the CD player
Press to change to the	m	Press to step through
exact time, if necessary	or	your radio programs or
	p	tracks on a CD
Alternatively key in the
exact time		Alternatively, key in the
		exact number, using the
Press PLAY to accept.		number keys
The date appears
	n	Searches through a CD
Press to change the date,	or
if necessary	l	Searches backwards
		through a CD
Press PLAY to accept.
The year appears	STOP	Pauses playback any time
Press to change the year,	GO	Press to resume
if necessary		playback
Press PLAY to accept.	r	Raises the volume
STORE ? appears
	u	Lowers the volume
Press STORE to store the	•
new setting.		Switches off
STORED appears

Option programming

For the Beo4 terminal the key sequence is the following:

•	Press and hold
then
LIST	Press to access the setup function. The Beo4 display reads [OPTION?] - let go of
	both buttons
GO	Press to access Option-programming
LIST	Press to display [V.OPT]	CTV, or
	[A.OPT]	audio, or
	[L.OPT]	link room products
then

1Key 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

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*.

Component print and coordinate system

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.

Control circuit

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.

Wiring connections

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

20

20

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			DIAGRAM C
C3		C32			A32		A3

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

= D

Symbol of safety components

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.

Explanation of diagram	2.2

Measuring conditions

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.

Caution

The use of any controls, adjustments or procedures other than those specified herein may result in hazardous radiation exposure.

CLASS 1

LASER PRODUCT

COMPACT

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.

CD laserdiode

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

Lithium battery

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	2.4	Wiring diagram	2.4
Wiring diagram

2.5	Block diagram 2.5	2.5 Block diagram

Block diagram for frontend tuner

Block diagram 2.6	2.6 Block diagram	2.6

AM block diagram

2.7	Block diagram 2.7	2.7 Block diagram

Block diagram for CD PRO

	EYEPATTERN
2.5V	1.3V
	0.5µs/DIV

Block diagram	2.8	2.8	Block diagram	2.8
Block diagram for system key controle

2.9	Diagram A 2.9	2.9 Diagram A

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

Diagram B 2.10	2.10 Diagram B	2.10

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

2.11

Diagram C 2.11

2.11 Diagram C

Diagram C – Stereo decoder and power section

PCB drawing for PCB86 see page 2.13

Diagram D 2.12	2.12 Diagram D	2.12

Diagram D – RDS, µP & IIC bus filter

PCB drawing for PCB86 see page 2.13

2.13	PCB drawing 2.13	2.13 PCB drawing

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

Diagram E 2.14	2.14 Diagram E	2.14

Diagram E – Interface for µP & µPH8

PCB drawing for PCB2 see page 2.16