Bang & Olufsen BeoLab 3500 MKII 1601 User manual

BeoLab 3500 MKII

Type 1601, 1602, 1603, 1604, 1605, 1607, 1608

from serial no. 19343452

Service Manual

English

German and French, versions are available in the Retail System

CONTENTS

Survey of modules ........................................................................................ 1.1

Adjustments ................................................................................................. 2.1

Repair tips ..................................................................................................... 3.1

Disassembly .................................................................................................. 4.1

Insulation test ............................................................................................... 5.1

Speciﬁcation guidelines for service use .......................................................... 6.1

Wiring diagram ............................................................................................. 7.1

Block diagrams .................................................................................... 7.3 – 7.5

Available parts .............................................................................................. 8.1

Survey of modules 1.1

2 Switch Mode Power Supply

19 DC/DC Converter

20 Transformer left

21 Transformer right

22 Power Ampliﬁer left

22 Power Ampliﬁer right

25 NTC

31 LF Supply and Control

32 Cross Field

34 Plug PCB

35 Display, Keyboard and IR Receiver

36 Microcomputer

Seen from the front

36

34

20

2

22

25

32 35

21

19

31 22

25

Seen from the back

1.2

Adjustments 2.1

ADJUSTMENTS

5V

When replacing IC1, LM3578, on PCB2, Switch-Mode Power Supply, the supply

voltage may have to be adjusted to 5V ±0.25V by means of R2 and R10:

- If 5V is above level, install R2 (R1//R2).

- If 5V is below level, install R10 (R3//R10).

SPEAKER

Adjustment of bass/treble sound level.

To be carried out only when replacing a speaker unit or PCB36, Microcomputer.

TEST MODE 01

This test mode permits manual adjustment of speaker bass and treble levels and

can only be executed from stand-by with a Beo4.

- Press MENU 0 1 GO.

The display reads SPK.CAL. to indicate that the product is ready for speaker

calibration.

- Press GO.

The display shows the present adjustment:

‘X X X X’ = left bass (LB).

‘X X X X’ = left treble (LT).

‘X X X X’ = right treble (RT).

‘X X X X’ = right bass (RB).

The value that can be changed is ﬂashing. Press >> or << to change unit of

adjustment, and change the value by pressing the digit keys. When all four

speakers have the desired encoding, press STORE, and abandon test mode by

pressing STOP.

C3

L1

IC1

L2

C7 R11

C1C2

R3

R10

R1

R2

R5

R4

2

2.2 Adjustments

Replacement of PCB36, Microcomputer

The bass and treble levels of the speakers are stored electronically in the

Microcomputer (PCB36). When replacing PCB36, the original bass and treble level

values must be restored:

- Install the new Microcomputer (see section 4, Disassembly, if necessary).

- In TEST MODE 01, enter the values printed on the label in the socket well:

LT (left treble) : X LB (left bass) : X

RT (right treble) : X RB (right bass) : X

- Press STORE STORE when all four speakers have been encoded as desired.

Replacement of a speaker unit

A rated value in dB is printed on the back of the new speaker unit. This value is

used for adjusting the sound level, which is done in TEST MODE 01:

- Note the value on the back of the new speaker unit

- Replace the old speaker unit.

- Execute the point TEST MODE 01.

- The rated value printed on the back of the speaker may be either positive or

negative:

Positive:

If the rated value printed on the back of the speaker is positive, the unit in

question must be damped by X number of steps. Press >> to select speaker, if

necessary (the active speaker is ﬂashing), and enter a new digit (see table).

Negative:

If the rated value printed on the back of the speaker is negative, the other three

units must be damped by X number of steps. Press >> to select the three speakers

in question, and enter new digits (see table).

Rated value in dB X steps down

0.00

+/-0.25 0 steps down

+/-0.50

+/-0.75

+/-1.00

+/-1.25 1 step down

+/-1.50

+/-1.75

+/-2.00 2 steps down

- Press STORE when all four speakers have the desired encoding.

- Abandon test mode by pressing STOP.

Repair tips 3.1

REPAIR TIPS

BeoLab 3500 can be brought into TEST MODE from stand-by with a Beo4, giving

access to the following functions:

TEST MODE 00

Display of: Software version number and time of operation in Audio mode, Video

mode and stand-by.

- Press MENU 0 0 GO.

The display reads: SW X.Y, which is the software version number.

- Press m

The display reads: A: XXXXX, which is the Audio mode operating time in hours x 10.

- Press m

The display reads: B: XXXXX, which is the Video mode operating time in hours x 10.

- Press m

The display reads: C: XXXXX, which is the stand-by operating time in hours x 10.

Press m or p to scroll in the scroll menu, and abandon test mode by pressing STOP.

TEST MODE 01

Electronic adjustment of the bass and treble levels of the speakers. See section 2,

Adjustments.

SERVICE SET-UP

BeoLab 3500 is connected to a Beomaster as an ordinary Master link installation.

As regards option programming, see User’s Guide.

TEST MODE 02

Display of Master Link error types. Gives an identiﬁcation of the error types that

may occur in the Beolink installation.

- Press MENU 0 2 GO

The display reads:

ML OK = The Master Link connection is OK.

Or

NO ML = Master Link is not connected.

Or

ERROR 1 = Address conﬁguration impossible.

Or

ERROR 2 = Master Link data pulled low.

Or

ERROR 3 = Master Link data pulled high.

Or

ERROR 4 = Data collision on Master Link.

- Press STOP to abandon display of Master Link error types and to delete registered

errors.

The Master Link error system is a part of the software in the product. It registers

communication errors between the microcomputer, the data transceiver circuits

(PCB35) and the products connected to BeoLink. The error types will be described

below, and tips will be given regarding how the cause of the error can be found:

3.2 Repair tips

ERROR 1:

Error during address conﬁguration. No address has been allocated because too

many units are connected to the BeoLink.

- Remove all products from BeoLink, and connect them again one at a time until the

error code occurs. Disconnect that product from BeoLink.

ERROR 2:

It is not possible to transmit on BeoLink, because it has been pulled low. The error

may occur if there is no Master Link driver circuit, or as a result of a physical short-

circuit on BeoLink or in the data transceiver circuits.

- Disconnect one product from BeoLink at a time, and see if it starts up.

- Reset the faulty product, and check the connection (cable/plug) and signal path

(the data transceiver circuits).

ERROR 3:

It is not possible to transmit on BeoLink, because it has been pulled high. This

error is caused either by the pull-up resistance in the system having become too

small or by an error in the data transceiver circuit.

- Disconnect one product from BeoLink at a time, and see if it starts up.

- Reset the faulty product, check whether the Master Link cable is too long, and

check the signal path (the data transceiver circuit).

ERROR 4:

The data trafﬁc on BeoLink has been excessive, or a product has jammed and will

not receive telegrams.

- Press the operating sequence again.

- Disconnect one product from BeoLink at a time to determine which product has

jammed. Reset the faulty product, and check the Master Link connection (cable/

plug) and signal path (ampliﬁers in the data transceiver circuit).

TEST MODE 0 3

Direct selection of Master Link input. Permits the Master Link signal path to be

tested without having a BeoLink master connected.

- Press MENU 0 3 GO

The display reads:

ML SEL. = Opens the Master Link signal path.

- Press STOP to close the Master Link signal path.

Disassembly 4.1

DISASSEMBLY

Front fabric frame

- Push the front fabric frame to the side and lift it off.

When both front fabric frames have been removed, PCB35, Display, Keyboard & IR

receiver, PCB36, Microcomputer, and PCB32, Cross ﬁeld, are accessible:

- Remove the display glass (two screws) and the two plastic covers (four screws).

PCB35 can now be tilted out into service position, thereby also providing access to

PCB36 and PCB32.

35

32

36

4.2 Disassembly

Service position

Important!

The display glass and cabinet must be protected against scratches by placing them

on a soft base.

- Remove the sixteen screws, A, behind the front fabric frames.

- Place the front face down.

- Remove the socket well by ﬁrst removing the two Allen screws.

- Lift the cabinet up and off carefully. Place the cabinet parallel to the electronics

block, and remove the two woofer plugs (22P4) if necessary.

- When assembling the product, lower the electronics block carefully down into the

cabinet. Place the woofer leads at the centre of the cabinet so that they will not

rattle against the cabinet sides.

A

Insulation test 5.1

INSULATION TEST

Each set must be insulation tested after dismantling. The test is to be performed

when the set has been re-assembled and is ready for delivery to the customer.

Make the insulation test as follows: Short-circuit the two plug pins of the mains

plug and connect one of the terminals of the insulation tester. Connect the other

terminal of the insulation tester to the chassis of the 8-pin DIN socket.

N.B.!

To avoid ruining the set, it is esential that both insulator test terminals are in really

good mechanical contact.

Now turn slowly the voltage control of the insulation tester until a voltage of 1.3kV

is obtained. Hold it there for 1 second, then turn slowly the voltage down again.

At no point during the testing procedure any ﬂash-overs are permissible.

5.2

Speciﬁcation guidelines for service use 6.1

SPECIFICATION GUIDELINES FOR SERVICE USE

BeoLab 3500 MKII Type 1601 (EU), 1602 (GB), 1603 (USA-CDN), 1604 (JAP), 1605 (AUS)

1607 (KOR), 1608 (CHK)

Concept

X-tra room product Active stereo loudspeaker with control circuitry, stand-by relay

and IR receiver

Operation

Local operation Two sensi-touch ﬁelds with restriced operation (Mute/on/off/listen-in,

timer on/off)

Remote operation Beolink 1000 or Beo4, one-way (optional extra)

Status feedback Red 8 char. LED dot matrix display, (program source, program or

track number, record, clock)

Red LED 1.8mm (Timer indication)

Independent sound control Volume, balance, bass, treble, loudness

Compatability Master Link

Wireless 1 via 8-pin DIN plug

Cabinet

Rear ﬁnish Polished aluminium, high gloss

Front cloth Black

Center front Black aluminium/plastic

Wall bracket Grey plastic

Placement

Wall Wall bracket included

Stand Polished aluminium (optional extra)

Acoustics

Cabinet net volume per channel 0.8 litres

Woofer in each channel 9 cm - 3½”

Tweeter in each channel 1.8 cm - 3/4”

Crossover frequency 3000 Hz

Bass reﬂex principle Port

Electronics

Overload protection Yes

Volumecontrol +12 dB in relation to central room

Bass/treble equalization ±12 dB, 100Hz/20kHz

System data

Principle Active, Bass reﬂex, 2-way, bi-amp,stereo

Frequency response 70 - 22.000 Hz +4 -8 dB, half ﬁeld

Sound Pressure Level 95 dB weighted noise (IEC 268-5),stereo, half room, 3m

Harmonic distortion 250 -1,000Hz <10% 94 dB SPL, 1m

Harmonic distortion 1,000 - 5,000Hz <3% 94 dB SPL, 1m

Minimum distance to TV 25cm

6.2 Speciﬁcation guidelines for service use

Power ampliﬁers

Rated power woofer 35W, 8W

Rated power tweeter 35W, 8W

Ampliﬁer signal-to-noise ratio > 80 dBA, 1W/8W

Signal-to-noise ratio > 74 dBA, full volume

Frequency range 20 - 20,000 Hz +0 -1 dB

Harmonic distortion < 0.1%

Total harmonic distortion < 0.3% IHF

Cross talk 50 dB

Active crossover network 24 dB/octave Linkwitz/Riley

Low frequency equalization +12 dB/60 - 250 Hz, ABL

High pass ﬁlter 30 dB/octave, 60 Hz

Connections

Mains Cable included, 3 meters

230V AC, 1601 EU, 1607 KOR, 1608 CHK

240V AC, 1602 GB and 1605 AUS

120V AC, 1603 USA - CDN

100V AC, 1604 JAP

BeoLink Wireless 1 (W1) 8-pin DIN 45326 socket

Dimensions

Total dimensions W x H x D (on wall) 111 x 9.5 x 11 cm

Power consumption, operation 95 watts (230V)

Power consumption, stand-by 1.1 watt, ‘Dot’ in display

3 watt, ‘Watch’ in display

Weight 10 kg, without stand

Optional accessories

Beo4 Type 1627

Wall bracket Type 1607 - 3031302

Wall bracket 3031235

Wall plate 3031333

Table stand Type 1606 - 1160611

Cable cover 2560276 (10 pieces x 2.5m)

Subject to change without notice

7.1

Wiring diagram

Wiring diagram 7.1 7.1 Wiring diagram

SWITCH MODE

POWER SUPPLY

TRANSFORMER LEFT

PLUG PCB

MICRO

COM-

PUTER

NTC

+9V

-9V

GND

BASS R

TREB R

PLIM

PMUTE

PFAIL

AC2 1

AC2-1

AC2 G

AC2 2

AC2-2

AC2-1

AC2 G

AC2-2

18V

GND

+9V

-18V

GND

-9V

13V AC AC3 2

AC3 G

13V AC AC3 1

AC3 G

13V AC AC3 2

ML?

MCL

SDA

SCL

GND

BAS L

GND

TREB L

PLIM

PMUTE

PFAIL

N.C.

+9V

-9V

MLL-

MLL+

MLR-

MLR+

MCLL-

MCLL+

MCLR-

MCLR+

ML?

MCL

SDA

SCL

GND

BAS L

GND

TREB L

PLIM

PMUTE

PFAIL

N.C.

+9V

-9V

MLL-

MLL+

MLR-

MLR+

PL in R

GND REF

PL in L

GND

+5V ST.BY

GND

-5V ST.BY

GND

BAS L

GND

TREB L

GND

+9V

-9V

PLIM

PMUTE

PFAIL

PON

+5V ST.BY

GND

-5V ST.BY

GND

BAS L

GND

TREB L

GND

+9V

-9V

PLIM

PMUTE

PFAIL

PON

MLRX

MLTX

MLD+

MLD-

STROBE

IRRX

MUTE

TIMER

PON

-5V ST.BY

OE

DATA

CLOCK

GND

+5VA ST.BY

+5V ST.BY

L_LEV

PMUTE

L LEV

PFAIL

MLCON

MCLRX

MCLTX

MLRX

MLTX

PLIM

DATA

CLOCK

OE

GND

+5V

TIMER

MUTE

IRRX

STROBE

L LEV

PFAIL

MLCON

MCLRX

MCLTX

MLRX

MLTX

SDA

PLIM

DATA

CLOCK

OE

GND

+5V

TIMER

MUTE

IRRX

STROBE

MLD-

MLD+

SP ON

VML

8V5 u?15V

VML

-8V5 u?-15V

MLL-

MLL+

MLR-

MLR+

PL in R

GND REF

PL in L

GNDD

PL data

+9V

-9V

GND

BAS L

TREB L

PLIM

PMUTE

PFAIL

REL1

REL2

GND

10V

AC1 1

AC1 G

AC1 2

AC1 1

AC1-1

AC1 1

AC1 G

AC1 2

AC1-2

NTC

POWER AMPLIFIER

22

2

20

34

36

POWER AMPLIFIER

22

LF SUPPLY AND CONTROL

31

19

TRANSFORMER RIGHT

21

CROSS FIELD PCB

32

DISPLAY AND IR RECEIVER

35

STKEY

25

P1

P2

P25

P8

P3

P4

P23

P24

P21

P22

P20

230VAC

P19

P7

P3

P8

STKEY

NC

STKEY

SDA

NC

P1

P4

P5

P6

P9

P2

P10

230VAC

P11 P12

P14

P13

P17

P18

P15

P16 P2

P1

P3

P4

P8

NC

CP1

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

2

3

4

1

2

3

4

1

2

12

11

10

9

8

7

6

5

4

3

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

2

1

2

+

-

+

1

2

1

2

3

4

5

6

7

8

7

6

5

4

3

2

1

12

11

10

9

8

7

6

5

4

3

2

1

4

3

2

1

4

3

2

1

12

11

10

9

8

7

6

5

4

3

2

1

6

1

61

2

3

4

5

4

3

2

DC/DC

CONVERTER

1

2

3

4

5

6

7

8

9

10

11

12

1

10

9

8

7

6

5

4

3

2

GND

12

11

10

9

8

7

6

5

4

3

2

1

10

9

8

7

6

5

4

3

2

14

13

12

11

10

9

8

7

6

5

4

3

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14 1

2

3

11

12

13

14

10

9

8

7

6

5

4

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

12

11

10

9

8

7

6

5

4

3

2

1

2

3

4

5

6

7

8

7

6

5

4

3

2

1

14

13

12

11

10

9

8

7

5

6

4

3

2

1

2

1

2-

+

-

LEFT

RIGHT

3

3N.C.

N.C.

MAINS

1

2

7.2 7.27.2

7.3 Block diagramBlock diagram 7.3 7.3

MAINS IN

MAINS

OUT

P19-2

P19-1

TF1

T1

D2

C5

RL1

P20-1

P20-2

TF5

T2 F2

F4

F3

D3

P22-1

P22-12 P1-12

P1-1

10V

P21-4

P21-3 P23-3

P23-4

REL1

P21-1

REL2

P21-2

P23-2

P23-1

5V

PON

1V 1IC1

LM3578 7/6

5

R1

R2

R3

R10

R4

R5

C5

C6

TR2

C8

D4

TR3

C9

D3 -5V ST.BY

P24-3

P24-1

5V ST.BY

P4-1

5V ST.BY 5V ST.BY

5VA ST.BY

P1-6

P8-17

P2-3

P2-4

P9-18

P9-17

P9-11 -5V ST.BY

P2-10

P4-3

-5V ST.BY

5V

P4-10

P4-9

9V

P6-10

-9V

P6-9

P24-10

9V

P24-9

-9V

P25-2

P25-1

-9V

9V

P2-2

P2-1

C2

C1

-35V

35V

D200

MAINS IN

P10-1

P10-2

TF1 F3

T1

F2

F4

F5

P12-4

P12-3

P12-2

P15-1

P15-2

P15-3

P15-4

P12-1

D1

C29

C30

P14-6

P14-3

-18V

18V

P13-1

P13-4 P13-6

P13-3

9V

-9V

IC1

LM317

IC2

LM337

9V

-9V

P14-1

P14-4 P18-10

P18-9

-9V

9V

P2-2

P2-1

P11-1 P1-1

P11-12 P1-12

SEE PCB 22 POWER

AMPLIFIER LEFT

20 TRANSFORMER LEFT SWITCH MODE POWER SUPPLY

2 32 CROSS

FIELD

µC

36

35 DISPLAY,

KEYB.&IR

DC/DC

19

22 POWER AMPLIFIER

(LEFT)

LF POWER SUPPLY

3121 TRANSFORMER RIGHT

POWER AMP.

(RIGHT)

22

-+10V

-+

26V AC

26V AC 26V AC

26V AC

- +

-+

13V AC

26V AC

-9V

P16-2

9V

P16-1

7.4 Block diagramBlock diagram 7.47.4

34 PLUG PCB

POWER AMP. RIGHT

POWER AMP. LEFT

22

22 31

2

31LF

CROSS FIELD

32

35 DISPLAY, KEYBOARD & IR

MICROCOMPUTER

36

32

2

SMPS

P2-11

P4-14

P24-14

P24-2

RELAY

TR1

PON

P9-10

PMUTE

L-LEV

LCD

CONTRAST

POWER

ON/MUTE

IC4

TR7,8,15

DATA

STROBE

CLOCK

OE

DISPLAY

IC1,2,7

2/4IC6,DP1

ML DATA

TRANSCEIVER

TR9-14,IC8

P9-3

MLTX

MLD-

P9-5

MLD+

P9-4

CLOCK

P9-14

OE

P9-12

DATA

P9-13

P9-6

P2-15

P2-8

P2-9

3

P2-7

P2-17

P2-16

C4 22n

14

1

21/4IC1

5V

P1-10

P1-12

P1-1

P1-11

OE

P8-13

CLOCK

P8-12

MLTX

P8-7

DATA

P8-11

STROBE

P8-22

PFAIL

P8-2

PLIM

P8-10

5V

P8-17

PL ON

P8-3

PL RX

P8-4

SDA

P8-8

PL TX

P8-5

IRRX

P8-20

MLRX

P8-6

L-LEV

P8-1

GND

P8-15

GND

P8-16

TIMER

P8-18

MUTE

P8-19

STKEY

P8-9

P2-12

P1-5

P2-13

P1-4

P2-20

P1-14

P1-8

7

P9-9

TIMER

P9-8

P9-1

STKEY

MUTE

SOFT TOUCH KEYB.

TR3,TR4,2/4IC6

IR RECEIVER

IC3,TR1,2,5,6

IRRX

P9-7

MLRX

P9-2

P9-19

L-LEV

P-MUTE

P9-20

GND

P4-2

P1-22

P2-2

P1-17

P2-19

P1-3

P2-14

P1-18

P5

P4-13

P4-11

P5-8

5V

R6

10K

R7

R21

10K

TR6

P1-

21

P1-13

P1-6

P1-20

P1-19

P1-15

5V

P3-11

VML

8V5 =>15V

PL DATA

TR3,4,5

P3-1

PL D

P5-2

SDA

SCL

P5-3

P3-13

MLD+

MLD-

P3-14

SDA, SCL

3/4IC1

P25-8

P24-13

P25-6

P24-11

P16-6

P16-8

P17-10

P17-8

SOUND CONTROL

IC1

P17-3 P17-2

MLD-

MLD+

PL DATA

VML

PLIM

P2-6

PFAIL

P2-8

PLIM

P2-6

PFAIL

P2-8

R78,TR8-10 AND

IC2, TR7

R78,TR8-10 AND

IC2, TR7

PL

5

3

72

1

4

6

P7-4

VML

8V5 =>15V

P7-14

P7-2

P7-1

116

MASTER LINK

1A

1A 1A

SCL SDA

10

P1

16

P2-18

STR.

2

31 32

P25-7 P24-12

P16-7 P17-9 P5-9 P2-1

D5

PMUTE

12

PMUTE

P2-7

PMUTE

P2-7

P4

P1

7.5 Block diagramBlock diagram 7.5 7.5

22 POWER AMPLIFIER

- +

P1-1,2,3,4

-35V

P1-9,10,11,12

P1-5,6,7,8

POWER SUPPLY

35V

D200

C2 C1

3

2

1

1/2

IC100

4558 1/2

IC100

4558

5

6

7

TREBLE FILTER, 4. ORDER HP

P2-5

TREBLE IN

D12 D4

C14

R32

TO IC1 PIN 6

PA MUTE

P2-4

BASS IN

FROM

PCB 5

P9-20

PMUTE

P2-7

3

2

1

1/2

IC101

4558

BASS EXTENSION

2. ORDER HP

3

2

1

1/2

IC103

4558

1/2

IC103

4558

6

5

7

BASS EXTENSION 4. ORDER LP

5

6

7

1/2

IC101

4558

R109

LDR

BAND PASS FILTER

WITH ADJUSTMENT

3

2

1

1/2

IC102

4558

1/2

IC102

4558

R113

2. ORDER HP

DIFFERENTIAL FILTER

9V

5

6

7

R114

R129

5

6

1/2

IC104

4558

7 3

2

1

1/2

IC104

4558

R128

R127

R130

R109

LED

AMPLITUDE DETECTOR

BASS FILTER WITH ABL

R58

R66

12

13

14

1/4

IC2 1/4

IC2

1/4

IC2

1/4

IC2

10

9

8

C26 R67

5

6

7

3

2

1TR7

D8 D9

POWER LIMITER BASS (LONG AND SHORT TERM)

PLIM

P2-6

TO PCB3 ?P

25

NTC

R78

9V

TR5

TR6

TREBLE PROTECT

TR3

MUTE

TRANSISTOR

1

2

10

TREBLE

R26

1/2

IC1

STK4171V

R27

POWER AMPLIFIER TREBLE

R69

PFAIL

P2-8

TO PCB3 ?P

R71

9V

P8-1

P8-2

TR10

TR9

TR8

MUTE

TRANSISTOR

TR4

1/2

IC1

STK4171V

R70

18

17

13

R52

R49

POWER AMPLIFIER BASS

BASS

9V

TR1

TR2

35V 9V

R4

R2

R5

SIGNAL MUTE

P2

1

P4

1

-9V

+

-

+

-

+

-

+

-

+

-

+

-

+

-

+

-

+

-

+

-

+

-

+

-

+

-

+

-

+

-

+

-

Block diagram for Power ampliﬁer

8.1 Available partsAvailable parts 8.18.1

9001

9002

9003

9008

9009

9010

9011

9012

9013

9014

9015

9016

9017

9004

9005

9006

9007

9019

9020

9021

9022

9023

4

1

2

3

32

1

5

55

5

6

7

8

9

7

8

9

7

6

5

10

6

66

10

6

15

14

14 10

10

14

6

5

16

17

18

21

5

20

5

19

19 20

5

6

13

13 13

13

21

519

20

19

5

520

5

16

17

18

66

6

10

14

11

11 10

15

14

13

9018

21

35

20

22

25

236

32

34

22

21

19 31

25

Available parts

BeoLab 3500

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Bang & Olufsen BeoLab 3500 MKII 1601 User manual

Bang & Olufsen BeoLab 3500 MKII 1601 User manual

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