Bang & Olufsen 6881, 6882, 6885, 6886, 6887 Service Manual

BeoLab 5

Type 6881, 6882, 6883, 6884, 6885, 6886, 6887, 6888
From serial no. 19375256

Service Center repair guide
English

How to service

Front line service

BeoLab 5 must be serviced in the customers home in terms of electrical symptoms
or exhange of mechanical parts such as cloth frame, microphone or foot. In this
way you avoid having to transport the heavy loudspeaker (967mm/Ø485mm,61kg)
from and back to the customer. For front line service we offer a back-up suitcase.
All needed electrical parts are found in the back-up suitcase (beside the transformer
and lower woofer). Mechanical parts (cloth frame, foot, cabinet or alu. plates)
must be ordered separately.

Service documentation

Service documentation for the BeoLab 5 will be a “Service Center repair guide” with
part no. for the back-up suitcase, electrical and mechanical parts, User’s guides etc.

Converting mains voltage supply

If it is necessary to change voltage supply, e.g. when moving between two countries,
it is necessary to order new mains transformer and a jumper on the ICEsystem 1
PCB6 (J200 = 220-240Vac, J201 = 100-120Vac). For US/JPN the fuse F10/11 on
the mains lter PCB1 must be changed from T5A to T10A also.

E.g.: Moving from EU (type 6881) to Japan (type 6884) with a pair of BeoLab 5,
order two mains transformers for type 6884, and move the jumper on the
ICEsystem 1 PCB6 from J200 to J201 to adapt both speakers to the 100Vac mains
voltage.

Type survey

Variants Type Transformer Jumper Mains cable Fuse F10/11
J200/J201 on PCB1
on PCB6
EU 6881 8013627 J200 mount. 6100440 6600177 (T5A)
I 6888 8013627 J200 mount. 6100441 6600177 (T5A)
CH 6887 8013627 J200 mount. 6100442 6600177 (T5A)
GB 6882 8013627 J200 mount. 6100443 6600177 (T5A)
US 6883 8013629 J201 mount. 6100444 6600176 (T10A)
JPN 6884 8013628 J201 mount. 6100445 6600176 (T10A)
AUS 6885 8013630 J200 mount. 6100446 6600177 (T5A)
KOR 6886 8013627 J200 mount. 6100447 6600177 (T5A)

How to service, English 1.1

1.2 Warnings – PIN code protection, English

STATIC ELECTRICITY
MAY DESTROY THE
PRODUCT

Warnings

ESD

When electrical replacements or disassembly is taking place, use a ESD-mat.
The internal electronic are very sensitive to static electricity.

General warnings

Wear cutton cloves to avoid any ngerprints on the product.

The aluminium surfaces on the product is very sensitive, so handling should be
done with great care to avoid damage.

The mechanical limit for the driver is easily reached when the vacuum tightness in
BeoLab 5 is broken.

PIN code protection

The PIN code protection system will be introduced in autumn 2003.
This will be the known PIN code system, which are used in others products. The
system will be mentioned in the user guide when introduced. Like on other
products you will be able to use the service master code, when service is
performed (11111).

PIN code protection is introduced from serial number : _________________

Specification guidelines for service use BeoLab 5

Type no. 6881 Europe - 230V6881 Europe - 230V
Type no. 6882 England - 230V6882 England - 230V
Type no. 6883 USA, Canada - 120V6883 USA, Canada - 120V
Type no. 6884 Japan - 100V6884 Japan - 100V
Type no. 6885 Australia - 240V6885 Australia - 240V
Type no. 6886 Korea- 220V6886 Korea- 220V
Type no. 6887 Switzerland - 230V
Type no. 6888 Italy - 230V6888 Italy - 230V

Dimensions Height - 967mm
Ø - 485mm
Weight - 61kg

Box for one loudspeaker Height - 1300mm
Width - 600mm
Length - 600mm

Cabinet finish Aluminium and black cloth

Cabinet volume Upper bass - 5 litres
Lower bass - 29 litresLower bass - 29 litres

Power Consumption typical 15 W
Stand-by >0.5 W

Maximum Sound Pressure Level 108 dB
Power amplifiers 4
Long term maximum, output power per amplifier Lower bass : 1000 watts
Upper bass : 1000 watts
Midrange : 250 wattsMidrange : 250 watts
Tweeter : 250 watts

Effective Frequency Range 20 – 20,000 Hz
Crossover frequency 120/600/2000 Hz
Cabinet principle Closed box
Magnetically shielded No

Lower woofer 381mm - 15”
Upper woofer 165mm - 6.5”
Midrange 76mm - 3”
Tweeter 19mm - ¾”

Directivity control treble and midrange *Acoustic Lens Technology

Bass equalisation ABC (Adaptive Bass Control)

Connections 2×Powerlink
Phono (Line)
**2×Digital IEC 60958

Volume adjustment Built-in

*ALT (or Acoustic Lens Technology) is licensed from Sausalito Works LLC.
**32/44.1/48/88.2/96 K

Subject to change without notice

Specification guidelines for service use 2.1

2.1

2.1

3.1 Overall block diagramOverall block diagram 3.13.1

Overall block diagram

3.2 Wiring diagramWiring diagram 3.2 3.2

Wiring diagram

4.1 Available partsAvailable parts 4.14.1

Available parts

Lens

9001

8

10

9005

9006

9007

9009

9010

9008

9011

10

9012

9013

9014

9015

9016

9019

9017

9018

9004

9003

9002

1

1

2

2

3

3

3

3

3

3

4

2

2

2

2

6
7

5

4

3

3

3

3

8

8

8

8

8

8

5

7

6

8

Incl. pos. nos. 3, 9005, 9006

Incl. pos. nos. 3, 5,
6, 7, 9009, 9010

Incl. pos. nos. 3, 5, 6, 7

4.2 Available partsAvailable parts 4.2 4.2

Lens

9001 3459436 Topplate, complete
9002 3460017 Holder
9003 6150038 Lens f/Indicator
9004 3452736 Lens f/TW incl. pos. nos. 3, 9005, 9006
9005 3947806 Felt f/TW, large
9006 3947807 Felt f/TW, small
9007 8480373 Tweeter - 19mm, 3/4”
9008 3452737 Aluminiumplate f/TW incl. pos. nos. 3, 5, 6, 7, 9009, 9010
9009 3947808 Felt f/MR, large
9010 3947809 Felt f/MR, small
9011 8480374 Midrange - 76mm, 3”
9012 3332096 Damping material
9013 3332098 Damping material, base
9014 3332101 Damping material, MR
9015 3452738 Aluminiumplate f/MR incl. pos. nos. 3, 5, 6, 7
9016 3459437 Topcover
9017 3452739 Tube w/flange incl. pos. no. 9018
9018 6150036 Lens f/IR
9019 3332099 Damping material

8Module 8100089 PCB8, Indicator

10Module 8100090 PCB10, NTC

Survey of screws etc.

1 2013263 Screw 3 x 7mm
2 2013257 Screw 5 x 50mm
3 3947350 Tape, roll 3 x 7mm
4 2038096 Screw 3 x 5mm
5 2013255 Screw 3 x 10mm
6 2816298 Ground spring
7 7530138 Plug
8 2058063 Screw 5 x 25mm

4.3 Available partsAvailable parts 4.34.3

Speakers

9026

9025

9027

9028

9029

9030

9031

9032

9033

9034

9035

9037

9038

9039

9040

9041

9042

9043

9036

10

7

999

10

10

10

10

10

9

11

11

11

11

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

9

8

8

12

12

12

12

12

12

12

12

12

12

13

13

13

13

13

13

14

14

16

16

15

15

15

15

8

Speakers

9025

3320719

Cloth frame

9026

8013627

Transformer, EU, KOR

8013628

Transformer, JPN

8013629

Transformer, US

8013630

Transformer, AUS

9027

3340246

Gasket, set

9028

3332094

Damping material, back

9029

3332095

Damping material, side

9030

3332097

Damping material, ring

9031

8480376

Woofer - 165mm, 6”

9032

3332095

Damping material, side

9033

3400303

Loudspeaker cabinet, incl. tape

9034

3160307

Cover f/plug connections

9035

3151722

Cover f/RS232 plug

9036

2816381

Hook f/cloth frame

9037

6100440

Mains cable, EU

6100443

Mains cable, GB

6100444

Mains cable, US

6100445

Mains cable, JPN

6100446

Mains cable, AUS

6100447

Mains cable, KOR

6100441

Mains cable, I

6100442

Mains cable, CH

9038

3151552

Wire holder

9039

8480375

Woofer - 381mm, 15”

9040

3340246

Gasket, set

9041

8470042

Microphone unit

9042

2752098

Foot

9043

3103417

Foot, soft

7Module

8100091

PCB7, Sensitouch & IR

8052224 Main chassis with PIN code protection

Jumper

Jumper

8

9

Available parts 4.4

Wire bundles

The part no. is printed on the diagram above the wire bundle, as shown.

Back-up suitcase with PIN code protection

Torx key