Bang-Olufsen-Beolab_3-Service-Manual(1) 电路图 维修手册.pdf

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1、BeoLab 3 Type 6881, 6882, 6883, 6884, 6885, 6886, 6887, 6888 from serial no. 19355490 Service Center repair guide English RadioFans.CN 收音机爱 好者资料库 CONTENTS How to service, Warnings, PIN code protection . 1 English . 1.1 German . 1.3 French . 1.5 Italian . 1.7 Spanish . 1.9 Danish . 1.11 Nederlands .

2、1.13 Japanese . 1.15 Specification guidelines for service use . 2 Diagrams . 3 Overall block diagram . 3.1 Wiring diagram . 3.2 Available parts . 4 Service tips, Replacements, Cleaning . 5 English . 5.1 German . 5.3 French . 5.5 Italian . 5.7 Spanish . 5.9 Danish . 5.11 Nederlands . 5.13 Japanese .

3、5.15 Disassembly . 6 Insulation test . 7 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 suitca

4、se. RadioFans.CN 收音机爱 好者资料库 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 benefit of t

5、he 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 chassi

6、s 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 ca

7、n 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 w

8、ill 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

9、 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

10、 6.11 Type survey VariantsTypeJumper P504Mains cable EU6891NOT mounted6100273 GB6892NOT mounted6200327 US/CDN6893Mounted6100307 JAP6894Mounted6100331 AUS6895NOT mounted6100332 KOR6896NOT mounted6100386 How to service, English 1.1 RadioFans.CN 收音机爱 好者资料库 1.2 Warnings PIN code protection, English STAT

11、IC 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 fingerprints on the product. The surfaces on the product

12、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 firmly. When doing disassembly small aluminum chips can occur when screws are removed. Make sure al

13、l 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

14、 in the back of this guide) Specification 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) Wid

15、th 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)

16、 Power Amplifiers 2 (Class D ICEpower) Power amplifier, bass 125 Watts, Class D, ICEpower Power amplifier, treble 125 Watts, Class D, ICEpower Long Term Maximum, output per amplifier Bass : 220 Watts (4 Ohm) Treble : 120 Watts (8 Ohm) Effective Frequency range 50 20.000 Hz Crossover frequency 3300 H

17、z 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 34” (19mm) Directivity control Treble *Acoustic Lens Technology Bass equalization ABL (Adaptive Bass Linearization) Protection Ther

18、mal 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 Corn

19、er 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. Specification guidelines for service use 2.12.12.1 3.1 Overall block diagramOverall block diagram 3.13.1 Overall block diagram 3.2 Wiring diagram

20、Wiring diagram 3.23.2 Wiring diagram 6 4.1 Available partsAvailable parts 4.14.1 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 902

21、2 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 BeoLab 3 90013459461Top plate 90023452044Acoustic lens w/fi lt 90033912004Filt 90043459462Tweeter

22、cover w/gasket 90053947851Gasket 90068480381Tweeter 19mm w/gasket 90073947852Gasket 90082019002Screw 90092622011Thermal conductive rubber 90103947057Gasket 90113947061Spacer 90123430008Cabinet incl. pos. nos. 9009, 9011, 9013, 9014, 9015, 9022, 9023, 9024, 9025 90133947063O-ring 90146150004Light gui

23、de 90152930181Rubber insert 90163358031Heat sink 90172622026Thermal conductive rubber 90182954002Bezel 90198480383Passive radiator 90208480382Woofer 90216100273Mains lead, EU 6100329Mains lead, GB 6100307Mains lead, US 6100331Mains lead, J 6100332Mains lead, AUS 6100386Mains lead, KOR 6100047Mains l

24、ead, CN 90223947850Packing panel 90233947066Gasket, set 90243172001Cover 90252732008Gasket 90263390661Wire holder 90273160099Leaf 90282752091Rubber foot PCB58001138Indicator PCB68100090NTC PCB9998052223Main chassis 7221489PCB1 - P504 Jumper for 115V mains conversion Survey of screws etc. 12019031Scr

25、ew 3.5 x 10mm 22013013Screw 3.5 x 10mm 32019030Screw 3.5 x 8mm 42015162Screw 3 x 6mm 52013010Screw 3 x 8mm 63390661Screw 3 x 8mm 73390661Washer 83390661Screw 6 x 12mm 4.3 Available parts Packing 3917147Foam foil 3396208Set of foam 3392794Outer carton Wire bundles 6277821Wire bundle, PCB2 - PCB5 6277

26、822Wire bundle, PCB3 - PCB5 6277823Wire bundle, PCB3 - PCB6 Parts not shown 3375060Product cover 3395305Back-up suitcase 3629144Special tool f/bezel 3629000Screwdriver TX6 3629002Screwdriver TX8 Accessories 6270077Power Link cable, 0.5m black 6270078Power Link cable, 2.5m black 6270079Power Link cab

27、le, 5m black 6270080Power Link cable, 10m black 6270081Power Link cable, 20m black 6270082Power Link cable, 2.5m white 6270083Power Link cable, 5m white 6270084Power Link cable, 10m white 6270085Power Link cable, 20m white 6270856Line/PL, 5m, black Available documentation Guides, see Retail Ordering

28、 System Available parts 4.4 Floor stand 2165 95013390647Bag w/top, screws, spikes (9506), and 2 hexagon spanners 95022950239Tube 95033459466Cover w/tape 95042752048Bottom w/tape 95053103392Foot 95063103390Spike 3396205Foam - order 2 pcs. 3392780Outer carton 3504725Guide 9501 Incl. pos. no. 9006 9502

29、 9503 9504 9505 9506 4.5 Available parts Table stand 2166 95102627000Protection washer 95112950238Tube 95122752046Bottom 95133103358Foot 3396203Foam - order 2 pcs. 3392778Outer carton 3504726Guide 9512 9513 9511 9510 95203390646Bag w/protection washer, screw, and hexagon spanner 95212854225Plate 952

30、23151796Fitting 3396204Foam - order 2 pcs. 3392779Outer carton 3504727Guide Wall bracket 2167 List of available parts 4.6 9521 9520 9522 9520 4.7 Service hints and adjustment Service Hints Doing fault searching, the BeoLab 3s LED can give you a hint. If the LED turns orange in colour it can be a res

31、ult of a thermal shutdown, remove the mains and let the speaker cool down. If the LED still light orange when the mains is connected again, then it is a indication of an internal error. A internal error indication can be caused by many things, but the most likely is listed below. 1. The NTC module o

32、n the bass driver unit is not connected to the Main chassis, the plug is disconnected. 2. Tweeter unit is failing (How to measure the driver units is described later on this page) 3. Bass unit is failing (How to measure the driver units is described later on this page) 4. Error in Switch Mode Power

33、Supply How to measure the Driver units (treble/bass), using a Ohm-meter : Dismantle the speaker to get access to the driver unit you want to measure. Disconnect the unit completely Measure with an Ohm-meter The bass unit should be 4,0 Ohm +/- 10% (between 3,6 - 4,4 Ohm) The treble unit should be 6,4

34、 Ohm +/- 10% (between 5,7 - 6,9 Ohm) If the measurements are below the 10% value, it indicates that the driver unit coil is shortcut. If the measurements is over the + 10% value, it indicates that the driver unit coil is disconnected. Adjustment after driver unit or Main chassis replacement When a d

35、river or a Main chassis is replaced, the driver unit levels needs to be adjusted, so the speaker once again is in accordance with specifications. The adjustment is done with two click-potentiometers, one for treble level adjustment and one for bass level adjustment. Each potentiometer haves 10 step

36、(10 * 0,5 dB) and is located on module 03, on the Main chassis. Service hints and adjustment, English 5.1 Tweeter Woofer Remove the left slave unit, to gain access to the potentiometers. When the Main chassis is replaced, the potentiometers on the new chassis are set to the same value (click) as the

37、 old chassis. No further adjustment is used, as long as the driver units not have been replaced. When a driver unit is replaced, either treble or bass, you will need to perform an adjustment on the two potentiometers. On the new service driver unit there will be a dB value stated on the back. This v

38、alue is used along with the table below to adjust the correct potentiometer. Bass adjustment (the lower potentiometer) Stated value on the service driver unit Position of the click- potentiometer 3,5 - 3,80 2,6 - 3,41 1,8 - 2,52 1,1 - 1,73 0,4 - 1,04 -0,3 - 0,35 (0 dB level) -0,4 - -0,96 -1,0 - -1,7

39、7 -1,8 - -2,48 -2,5 - -2,89 Treble adjustment (the upper potentiometer) Stated value on the service driver unit Position of the click- potentiometer 3,1 - 3,70 2,4 - 3,01 1,7 - 2,32 1,0 - 1,63 0,4 - 0,94 -0,3 - 0,35 (0 dB level) -0,4 - -0,86 -0,9 - -1,57 -1,6 - -2,28 -2,3 - -2,79 5.2 Service hints and adjustment, English 6.1 BeoLab 3 in serviceposition BeoLab 3 in serviceposition 1 2 3 4 1 2 1x TX10 6.2 Replace Top plate Replace Top plate 1 6.3