Bang-Olufsen-Beolab-4000_Mk2-Service-Manual 电路图 维修手册.pdf

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1、BeoLab 4000 MKII Type 6642, 6643, 6644, 6645, 6646, 6647, 6648 Service Manual English German, French, Italian, Spanish, Danish, Dutch and Japanese versions are available in the Retail System This Service Manual must be returned with the defective parts/back-up suitcase ! RadioFans.CN 收音机爱 好者资料库 CONT

2、ENTS Survey of modules . 1.1 How to service . 1.2 Warnings Insulation test . 2.1 Adjustments . 3.1 Repaie tips . 4.1 Replacement of modules . 5.1 Specification guidelines for service use . 6.1 Block diagram . 7.1 Wiring diagram . 7.1 Available parts . 8.1 RadioFans.CN 收音机爱 好者资料库 PCB01Amplifier PCB02

3、SMPS PCB03MainPCB PCB04LED Surveyofmodules 1 2 3 4 Survey of modules 1.1 RadioFans.CN 收音机爱 好者资料库 Howtoservice Frontlineservice BeoLab 4000 MKII is to 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

4、 one visit and using minimum of time on the case, all for the benefit of the customer. BeoLab 4000 MKII has been split-up into as few service items as possible. Each service friendly item is packed individually, prepared for worldwide transport, and has a separate seven digit spare part number to be

5、 found in the Service Manual or on the Bang & Olufsen Retail System. The exploded view drawing will show the service spare parts. All necessary electrical modules and the two loudspeaker units can be ordered to prepare front-line service. Cabinet parts must also be brought with you separately, if to

6、 be replaced in the customers home. To improve the quality and secure a better service please send the defective part for quality analyse purposes to: Att: Bang & Olufsen Operation a/s Att.: JEB 7210-3 Peter Bangsvej 15 DK-7600 Struer Please remember to fill-in a fault description (part no.: 3542206

7、). Delivery There is several type numbers for BeoLab 4000 MKII, however, this is only due to market approvals. All types can be used on all markets with 100 to 240 V (ac) mains voltage. When you order BeoLab 4000 MKII (set of two) two mains cables and two Power Link cables are included. Installation

8、andsetting-up Only the switch for Left, Right or Line must be set into correct position as described in the User Guide, before Power Link or a Line signal and AC power wires are connected. If Power Link is used, the switch is for Left or Right setting. If a Line signal (0 to 1V) is connected (via ph

9、ono-male to PL Line-in) part no. see Parts not shown) the switch must be set to Line position. See more details in the User Guide. The LED will indicate on (green) or off (red). FaultFinding Before troubleshooting is initiated, let the customer demonstrate the fault, if possible. There are four elec

10、trical modules in the product. Therefore a faulty module is easy to point out in most cases. The PCBs has been divided into: PCB01, Amplifier - PCB02, SMPS - PCB03, Main PCB and PCB04, LED. No special service programs are available in this product or via the ServiceTool. If there is a fault in the P

11、CB02, SMPS or PCB01, Amplifier the LED is typically off. Replacement Each loudspeaker is individually adjusted from production to ensure optimal stereo perspective. When replacing a speaker unit bass/treble level have to be adjusted. On the back of the new unit will be printed a rated value for the

12、sensitivity of the particular unit. The rated value is rated in dB. 1.2 How to service Warnings ESD When electrical replacement or disassembly is taking place, use an ESD-mat. The internal electronics are very sensitive to static electricity. Handling Wear cotton gloves to avoid any fingerprints on

13、the product. The surfaces on the product are very sensitive, so handling should be done with great care to avoid damage. Cleaning Clean the surfaces of the BeoLab 4000 MKII using a soft, lintfree cloth which you have wrung firmly in a solution of lukewarm water containing a few drops of mild househo

14、ld cleaner, for example a dish washing detergent. The cooling fins on the rear may be cleaned using a soft brush or a vacuum cleaner. The front cloth may be cleaned with a vacuum cleaner set to the lowest level. Note: Never use alcohol or other solvents to clean any part of the BeoLab 4000 MKII ! In

15、sulationtest The product must be insulation tested after having been dismantled. Make the test when the set has been reassembled and is ready to be returned to the customer. Flashover must not occur during the test. Make the insulation test as follows: Short-circuit the two pins of the mains plug an

16、d connect them to one of the terminals of the insulation tester. Connect the other terminal to ground on the Power Link socket. NOTE! To avoid damaging the product it is essential that both terminals of the insulation tester have good contact. During the test the current must not exceed 10 mA. Slowl

17、y increase the voltage on the insulation tester until a voltage of 2.5 kV (ac) is obtained. Maintain the voltage level for one second, then slowly decrease the voltage to 0 V (ac). ESD ESD-Mat Warnings Insulation test 2.1 Adjustments AdjustmentsafterreplacingPCB03,MainPCB Read out the adjustment pos

18、ition of the old potentiometers, R301 & R312, and set the new potentiometers to the same position. Adjustmentsofbass/treblelevels Each loudspeaker is individually adjusted from production to ensure optimal stereo perspective. When replacing a speaker unit or PCB03, Main PCB, bass/treble levels have

19、to be adjusted. On the back of the new speaker unit will be printed a rated value for the sensitivity of the particular unit. The rated value is stated in dB and have to be converted to a mechanical position of the two potentiometers by using table 1 and fig.1. After replacing a speaker unit - Adjus

20、t treble level by means of (R301) and the bass level by means of (R312). These two potentiometer are accessible via the two holes in the socket well, see fig. 1. - Adjusts according to the drawing and table 1. Only the potentiometer of the replaced unit have to be adjusted. WARNING: Do under no circ

21、umstances adjust the level of a unit that has not been replaced! Table 1 Clock position (The new position of the potentiometer) Bass deviation dBTreble deviation dB 0830+3.1+3.9 0900+2.7+3.3 1000+1.8+2.2 1100+0.9+1.1 12000.00.0 0100-0.9-1.1 0200-1.8-2.2 0300-2.7-3.3 0330-3.1-3.9 Fig.1 LINE L R 12 PO

22、WER LINK WT 12 3 1 2 11 10 9 3.1 Adjustments Repairtips Hum in loudspeaker when no music is played The Power Link cable must be of type MK III or higher. The ground connection in Power Link cable lower than MK III may be insufficient for optimum sound performance. PowerLink MKIII Check loudspeaker u

23、nits The loudspeaker units can be checked by an ohm-meter. OK values for tweeter and woofer are approx. 6 W. How to check the Switch Mode Power Supply - Take off the baffle. - Connect an audio signal (set the input switch corresponding to the applied signal). - Connect mains, 100 - 240V. - Confirm 1

24、2V standby on PCB02, SMPS P2 pin 6, GND pin 3 (if not OK, replace PCB02, SMPS). - Confirm 12V HT_ON, on PCB02, SMPS P2 pin 8 (if not OK replace PCB03, Main PCB). - Confirm 12V on PCB02, SMPS P2 +12V pin 1, 2 and -12V pin 4, 5 (GND pin 3). If not OK replace PCB02, SMPS. Repair tips 4.1 4.2 5.Replacem

25、ent of modules Replacement of modules Modules that can be replaced BeoLab 4000 MKII in service position . 5.2 Replace PCB0, Amplifier . 5.4 Replace PCB02, SMPS . 5.5 Replace PCB03, Main PCB . 5.6 Replace PCB04, LED . 5.7 Warning Static electricity Static electricity may damage the product. A static-

26、protective field service kit must always be used when the product is disassembled or modules are being handled. Notice! All modules must be placed on the ESD-mat or in an ESD-proof bag. Purpose of replacement of modules Short instructions for replacement of the available modules, with reference to a

27、dditional illustrations: - The correct sequence for replacing modules. - Text and illustrations. - Reference to adjustment. Adjustments After replacing PCB03, Main or a loudspeaker an adjustment is required, see adjustments. ESD ESD-Mat 5.2 BeoLab 4000 MKII in service position - Remove front frame L

28、INE L R 12 POWER LINK - Remove profile - Remove screws for baffle - Remove cables connected to BeoLab 4000 MKII 2x TX10 0 x TX10 5.3BeoLab 4000 MKII in service position - Remove cables for speaker units 5.4 Replace PCB0, Amplifier + 5.2 BeoLab 4000 MKII in service position - Remove screws 4x TX10 -

29、Remove cables on backside of PCB 4P300 4P301 5.5Replace PCB02, SMPS 6x TX10 - Remove screws and pull out PCB02, SMPS + 5.2 BeoLab 4000 MKII in service position - Remove cables 2P1 2P2 5.6 Replace PCB03, Main PCB + 5.2 BeoLab 4000 MKII in service position - Remove screws and pull out PCB03, Main PCB

30、- Remove ground cable!5x TX10 - Remove cables Ground 3P300 3P103 3P100 5.7Replace PCB04, LED - Remove screws and pull PCB04, LED out - Remove screw and pull off light guide x TX10 + 5.2 BeoLab 4000 MKII in service position - Remove screw and pull out LED 2x TX10 x TX10 5. 6.1Specification guidelines

31、 for service use Specification guidelines for service use BeoLab 4000 MKII Type 6642 (EU), 6643 (GB), 6644 (US), 6645 (J), 6646 (AUS), 6647 (KOR) 6648 (CN) Power supply: Voltage 100-240 Volt Power consumption Typical: 6 W, Standby: 0.5 W Cabinet finish Grey, black, dark grey, yellow, red/black, blue

32、/black Front cloth Grey, black, dark grey, yellow, red, blue Dimensions W x H x D 28 x 32 x 16 cm (with wall bracket) Weight 4.5 kg Indicator LED for On (green) or Off (red) Operation Left, Right or LINE, switch Protection Thermal protection of SMPS Tweeter protection System data: Effective Frequenc

33、y range 5520,000 Hz Sound Pressure Level (SPL) 97 dB/IEC noise 3 m/stereo/room Input impedance 47kW Harmonic distortion 6% 90 dB SPL/1 m/250-1000 Hz = 84 dBA (1W in Woofer) Input sensitivity/impedance: Input sensitivity Power Link & Line 125 mV (88 dB SPL) Auto switch on Power link sockets 1V/47 kW

34、Power link channel separation 55 dB/10,000 Hz Standby function Automatic On-Standby Switch off time (line) 3 min. Power amplifier, bass 30 W, Class D, ICE power Power amplifier, treble 30 W, Class D, ICE power Long-term maximum output power 56 W Connections: Power Link 2 x 8-pin socket Pin 1 Power u

35、p/down not used (interconnected between the two Power Link plugs ) Pin 2 Signal GND Pin 3 Left in (also used for line in. Note: pin2&7 in the plug must be connected when used for line in) Pin 4 Loudspeaker on/sense = 2.5V, OFF = P300 Plug 8/8pins AMPLIFIER 01 Plug P300 8/8pins W03 P103 Plug 3/3pins

36、Plug P104 3/3pins W04 04 LED MAIN PCB 03 SMPS 02 P100 Plug W01 W05 Tweeter levelWoofer level Power Link 1 Power Link 2 Line R/L AC Inlet Neutral Live Tweeter Black Red Woofer White Purple GR GND R302 R312 PCB04, LED PCB03, Main PCB02, SMPS PCB01, Amplifier Autostart HT On 1 2 Tweeter gain adjust EQ

37、notch 4 kHz EQ notch 7 kHz H. P. F fc 3200 Hz Tweeter Protection Limiter H. P. F fc 3200 Hz Differential Output Tweeter Tweeter amp. gain 20dB ICE power Woofer amp. gain 20dB Woofer MUTUAL EQ 750Hz notch 1.35kHz notch 2.4kHz peak ABL L. P. F fc 3560Hz Filter PWB L. P. F fc 3560Hz Differential Output

38、 Gain 12dB Woofer Gain adjust 1 2 Input amp. DIN input Input select AC in +12V stby. +/-12V HT on Block diagram Wiring diagram Available parts 8.8. Available parts8. Baffle Baffle leftBaffle right ! 9001 9002 9104 9101 9102 9102 9103 9001 9005 9004 9003 9003 9014 9006 9007 9008 9009 9013 9012 9010 9

39、011 9015 9016 9017 9018 9019 9020 9020 9021 1 3 2 4 1 1 1 1 2 3 3 1 1 1 1 2 4 4 4 4 4 4 5 8 8 7 6 6 6 6 6 6 6 6 6 6 6 6 6 4 4 4 4 4 4 9 9 9 9 2 10 10 10 11 11 12 10 10 10 10 11 10 10 10 10 10 10 10 10 10 Incl. pos. nos. 9004, 9005 Incl. pos. nos. 9004, 9005 Available parts BeoLab 4000 MKII 900134511

40、81Top/bottom,red 3451227Top/bottom,blue 3451242Top/bottom,darkgrey 3456201Top/bottom,aluminium 3456202Top/bottom,black 3456205Top/bottom,yellow 90023358346Heatsinkincl.pos.nos.9004,9005 90033947350Foamtape,10m 90043340136Gasket 90053340090Gasket 90063169054Bracketincl.pos.nos.9004,9005 90073170226Sh

41、ield 90083152399Holderf/PCB2 90093151432Holderf/PCB1 90102576128Adapter 90116150039Lightguide 90123340134Gasketf/lightguide 90132938320Bushf/lightguide 90143440162Baffle,left 90153440163Baffle,right 90168480321Tweeter 90178480384Woofer 90183320300Frontframe,black 3320742Frontframe,grey 3320750Frontf

42、rame,yellow 3320885Frontframe,darkgrey 90192568090Setofprofiles,black 2568111Setofprofiles,yellow 2568148Setofprofiles,red 2568150Setofprofiles,blue 2568158Setofprofiles,darkgrey 90202816315Spring 90213332015Setofgaskets 01Module 8003563PCB01,Amplifier 02Module 8003556PCB02,SMPS 03Module 8003562PCB0

43、3,MainPCB 04Module 8003555PCB04,LED 91013031601Bracketf/wall 91023031620Bracketf/speaker 91032816297Clips 91043031651Wallbracket,complete Availableparts8.2 Screws etc. 12013177Screw3x13mm 22816298Spring 32042053Screw4x16mm 42013229Screw3x6mm 57530087Soldertab 62013137Screw3x10mm 77530119Soldertab 82

44、015182Screw3x13mm 92015132Screw3.5x10mm 102015139Screw3.5x16mm 112054046Screw3.5x12mm 123340137Gasket Wires TheWnumberreferstotheWiringdiagrampage7.1 W016278171Wire,Inlet W026278172Wire,SMPS W036278173Wire,Amplifier W046278174Wire,LED W056278175Wire,speaker 8.3Availableparts Mains cables 6100273Main

45、scable,EU,3m 6100329Mainscable,UK,3m 6100307Mainscable,US,3m 6100331Mainscable,JP,3m 6100332Mainscable,AUS,3m 6100386Mainscable,KOR,3m 6100047Mainscable,China,3m Packing 3397996Setoffoam 3392504Outercarton Parts not shown 3658262Productcover 3103325Rubberfoot 3040030Allenkey 6270041PowerLinkcableMKI

46、II,5m,black Accessories 1203726Base 6270856PhonomaletoPLline-in,black,5m 6270433Stereomini-jack(male)to2xphono-female,black,3m Available documentation SeeRetailOrderingSystem Availableparts8.4 Floor Speaker Stand type 2069 92013031707Fitting 92022072119Fixingscrew 92032950216Aluminiumtube 92043459257Coverplate 92052752081Footincl.pos.no.9210 92103103392Foot“soft” 92113103390Foot“spike” 3390616Bagw/parts(2screws4x12mm,6pcs.ofpos.no.9211and1torxkey 3504637Setting-upguide 3392710Outercarton 3396136Foampackingtop/bott