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Bang and Olufsen
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Beolab 3
Owners manual
12 pgs226.62 Kb1
Service manual
30 pgs3.77 Mb10
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Bang and Olufsen Beolab 3 Service manual

4.3 (11)

BeoLab 3

Type 6881, 6882, 6883, 6884, 6885, 6886, 6887, 6888
from serial no. 19355490
Service Center repair guide
English
CONTENTS
English ................................................................................................ 1.1
German .............................................................................................. 1.3
French ................................................................................................ 1.5
Italian ................................................................................................. 1.7
Spanish ............................................................................................... 1.9
Danish .............................................................................................. 1.11
Nederlands ....................................................................................... 1.13
Japanese ........................................................................................... 1.15
Overall block diagram ......................................................................... 3.1
Wiring diagram ................................................................................... 3.2
English ................................................................................................ 5.1
German .............................................................................................. 5.3
French ................................................................................................ 5.5
Italian ................................................................................................. 5.7
Spanish ............................................................................................... 5.9
Danish .............................................................................................. 5.11
Nederlands ....................................................................................... 5.13
Japanese ........................................................................................... 5.15
English ................................................................................................ 7.1
German .............................................................................................. 7.2
French ................................................................................................ 7.3
Italian ................................................................................................. 7.4
Spanish ............................................................................................... 7.5
Danish ................................................................................................ 7.6
Nederlands ......................................................................................... 7.7
Japanese ............................................................................................. 7.8
There is no Brief operation guide in this Service Center repair guide.
Instead an english version of the user guide is enclosed the back-up suitcase.

How to service

Front line service
BeoLab 3 must be serviced in the customers home when it comes to electrical
symptoms or exchange of mechanical parts. In this way you avoid having to make
more than one visit and using minimum of time on the case, all for the benet of
the customer.
The loudspeaker dimensions are H-215mm, W-135mm, L-162mm, 2,55 kg and
the carbon box for two loudspeakers are H-350mm, B-360mm, D-380mm, 6,5 kg.
In the customers house it is possible to replace :
The electrical parts :
The loudspeaker units
The passive radiators
The complete main chassis
The standby LED PCB
The mechanical parts :
The lens for the tweeter
The cabinet
The foot
A sound level adjustment procedure is necessary when replacing one or more
loudspeaker units, or replacing the main chassis. This is done easily be means of
click potentiometers.
Replacements of the cabinet can be done at the customers as it consist of a
complete cabinet with gaskets and other materials there are needed when
exchanging the complete cabinet. Only the lens, the loudspeaker units, the main
chassis and the foot must be put onto the new cabinet.
Back-up Suitcase
The service Back-up Suitcase will contain all needed electrical parts, that is needed
to service a failing speaker. All mechanical parts must be ordered separately from
B&O Struer DK. All the needed tools and a Service Center Repair Guide will be
found in the suitcase.
Converting mains voltage supply
If it is necessary to change voltage supply, e.g. when moving between two
countries, this can be done easily in the BeoLab 3 speakers (on module 01 – P504).
You will only need to mount/remove a jumper. The fuse will be a global type, so
here is no need for replacement. Remember to order new mains cables.
See illustration on page 6.11
Type survey
Variants Type Jumper P504 Mains cable
EU 6891 NOT mounted 6100273
GB 6892 NOT mounted 6200327
US/CDN 6893 Mounted 6100307
JAP 6894 Mounted 6100331
AUS 6895 NOT mounted 6100332
KOR 6896 NOT mounted 6100386
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 an ESD-mat. The
internal electronic are very sensitive to static electricity.
General warnings
Wear cotton gloves to avoid any ngerprints on the product.
The surfaces on the product is very sensitive, so handling should be done with
great care to avoid damage.
Cleaning of the speaker surfaces should only be done a lint-free cloth, which you
have dipped in lukewarm water and wrung rmly.
When doing disassembly small aluminum chips can occur when screws are
removed. Make sure all these small aluminum chips are removed from the speaker
cabinet before assembly is done. These aluminum chips can resolve in internal
shortcuts, and damage the Main chassis badly, if not removed.
If the speaker needs to be transported, a product cover can be ordered from B&O
(ordrenr. can be found in the back of this guide)
Specication guidelines for service use BeoLab 3
Type no. 6891 Europe – 230V
Type no. 6892 England – 230V
Type no. 6893 USA, Canada – 120V
Type no. 6894 Japan – 100V
Type no. 6895 Australia – 240V
Type no. 6896 Korea – 220V
Dimensions for one speaker Height – 215mm (223mm on foot)
Width – 135mm
Length – 162mm
Weight – 2,55 Kg
Box for two loudspeakers Height – 350mm
Width – 360mm
Depth – 380mm
Weight – 6,5 Kg
Input sensitivity
Power Link 125mV – 88dB SPL
Line in (via Power Link socket, pin 3) 125mV – 88dB SPL (auto switch on)
Switch off time 3 min.
Maximum Sound Pressure Level 94 dB (Stereo, pair)
Power Ampliers 2 (Class D ICEpower)
Power amplier, bass 125 Watts, Class D, ICEpower
Power amplier, treble 125 Watts, Class D, ICEpower
Long Term Maximum, output per amplier Bass : 220 Watts (4 Ohm)
Treble : 120 Watts (8 Ohm)
Effective Frequency range 50 – 20.000 Hz
Crossover frequency 3300 Hz
Cabinet principle Double passive radiator system
Magnetically shielded Yes
Net volume, bass 1.5 litres
Woofer 4” (101,6 mm)
Passive radiators 2 x 4” (101,6 mm)
Treble ” (19mm)
Directivity control Treble *Acoustic Lens Technology
Bass equalization ABL (Adaptive Bass Linearization)
Protection Thermal protection
Connections
Power Link - input 1 (PL MKIII Semi-Balanced)
Mains – input 1
LINE in – input (via Power Link socket – pin3) 1 (auto switch on)
Indication 1 tri-color LED
Green On
Red Stand-by
Orange Protection (see “Service Hints”)
Operations
Switch for : Left – Right – LINE
Switch for : Wall – Corner – Free
Power consumption Typical : 7 Watts
IEC65 : 20 Watts
Stand-by : 0.2 Watts
*ALT (or Acoustic Lens Technology) is licensed from Sausalito Works LLC.
Specication 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

6
4.1 Available partsAvailable parts 4.1
4.1

Available parts

BeoLab 3
9001
9002
9004
9005
9006
9007
9008
9009
9010
9011
9012*
9013
9014
9015
9015
Incl. pos. no. 9003
9003
Incl. pos. no. 9005
Incl. pos. no. 9007
9018
9018
9019
9020
9016
9017
9015
9026
9027
9028
9022
9024
9018
9019
9021
9025
9012*
5
999
6
1
1
1
1
1
1
2
2
2
2
2
3
3
3
3
3
3
3
3
3
3
3
3
4
5
6
7
8
9012*
Consist of pos. nos.
9009, 9011, 9013, 9014, 9015,
9022, 9023, 9024, 9025
9023
Available parts 4.2
Top plate
Acoustic lens w/ lt
Tweeter cover w/gasket
Tweeter 19mm w/gasket
Thermal conductive rubber
Thermal conductive rubber
Woofer
Wire holder
8052223
Washer
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