B&O-Beolab3500MKIIDA-type-160x维修电路原理图.pdf

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1、BeoLab 3500 MKII Type1601,1602,1603,1604,1605,1607,1608 fromserialno.19343452 ServiceManual English German and French, versions are available in the Retail System ABO-CENTER v/HENRIKSENS ELEKTRONIK RadioFans.CN 收音机爱 好者资料库 CONTENTS Survey of modules . 1.1 Adjustments . 2.1 Repair tips . 3.1 Disassemb

2、ly . 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 ABO-CENTER v/HENRIKSENS ELEKTRONIK RadioFans.CN 收音机爱 好者资料库 Survey of modules 1.1 2 Switch Mode Power Supply 19 DC/DC Converter 20 Transformer left 21 Tran

3、sformer 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 20222 25 3235 21 19 31 22 25 Seen from the back ABO-CENTER v/HENRIKSENS ELEKTRONIK 1. ABO-CENTER v

4、/HENRIKSENS ELEKTRONIK Adjustments 2. ADJUSTMENTS 5V When replacing IC, LM3578, on PCB2, Switch-Mode Power Supply, the supply voltage may have to be adjusted to 5V 0.25V by means of R2 and R0: - If 5V is above level, install R2 (R/R2). - If 5V is below level, install R0 (R3/R0). SPEAKER Adjustment o

5、f bass/treble sound level. To be carried out only when replacing a speaker unit or PCB36, Microcomputer. TEST MODE 0 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 indic

6、ate 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 select speaker, if necessa

7、ry (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 valu

8、e in dB X steps down 0.00 +/-0.25 0 steps down +/-0.50 +/-0.75 +/-.00 +/-.25 step down +/-.50 +/-.75 +/-2.00 2 steps down - Press STORE when all four speakers have the desired encoding. - Abandon test mode by pressing STOP. ABO-CENTER v/HENRIKSENS ELEKTRONIK Repair tips 3. REPAIR TIPS BeoLab 3500 ca

9、n 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. - Pres

10、s m The display reads: A: XXXXX, which is the Audio mode operating time in hours x 0. - Press m The display reads: B: XXXXX, which is the Video mode operating time in hours x 0. - Press m The display reads: C: XXXXX, which is the stand-by operating time in hours x 0. Press m or p to scroll in the sc

11、roll 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 Users Gu

12、ide. 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 = Address configuration impo

13、ssible. 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.

14、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: ABO-CENTER v/HENRIKSENS ELEKTRONIK 3.2 Repair t

15、ips ERROR : 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 t

16、o 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 faul

17、ty 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 da

18、ta 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 produ

19、ct 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

20、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. ABO-CENTER

21、 v/HENRIKSENS ELEKTRONIK Disassembly 4. 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 displa

22、y 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 ABO-CENTER v/HENRIKSENS ELEKTRONIK 4.2 Disassembly Service position Important! The display glass and cabinet must be protected

23、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

24、, 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 A A A A A A A A A A A A A A A ABO-CENTER v/

25、HENRIKSENS ELEKTRONIK Insulation test 5. 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 p

26、lug 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 volt

27、age control of the insulation tester until a voltage of .3kV is obtained. Hold it there for second, then turn slowly the voltage down again. At no point during the testing procedure any flash-overs are permissible. ABO-CENTER v/HENRIKSENS ELEKTRONIK 5. ABO-CENTER v/HENRIKSENS ELEKTRONIK Specificatio

28、n guidelines for service use 6. SPECIFICATION GUIDELINES FOR SERVICE USE BeoLab 3500 MKII Type 60 (EU), 602 (GB), 603 (USA-CDN), 604 (JAP), 605 (AUS) 607 (KOR), 608 (CHK) Concept X-tra room product Active stereo loudspeaker with control circuitry, stand-by relay and IR receiver Operation Local opera

29、tion Two sensi-touch fields with restriced operation (Mute/on/off/listen-in, timer on/off) Remote operation Beolink 000 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 .8mm (Timer indication) Indep

30、endent sound control Volume, balance, bass, treble, loudness Compatability Master Link Wireless 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 a

31、luminium (optional extra) Acoustics Cabinet net volume per channel 0.8 litres Woofer in each channel 9 cm - 3” Tweeter in each channel .8 cm - 3/4” Crossover frequency 3000 Hz Bass reflex principle Port Electronics Overload protection Yes Volumecontrol +2 dB in relation to central room Bass/treble e

32、qualization 2 dB, 00Hz/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 -,000Hz 0% 94 dB SPL, m Harmonic distortion ,000 - 5

33、,000Hz 80 dBA, W/8W Signal-to-noise ratio 74 dBA, full volume Frequency range 20 - 20,000 Hz +0 - dB Harmonic distortion 0.% Total harmonic distortion 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 CONTRO

34、L IC1 P17-3P17-2 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 7 2 1 4 6 P7-4 VML 8V5 =15V P7-14 P7-2 P7-1 1 16 MASTER LINK 1A 1A 1A 1A1A SCLSDA 10 P1 16 P2-18 STR. 2 3132 P25-7 P24-12 P16-7P17-9 P5-9 P2-1 D5 PMUTE 12 PMUTE P2-

35、7 PMUTE P2-7 P4 P1 ABO-CENTER v/HENRIKSENS ELEKTRONIK 7. Block diagramBlock diagram 7.7. 22 POWER AMPLIFIER -+ P1-1,2,3,4 -35V P1-9,10,11,12 P1-5,6,7,8 POWER SUPPLY 35V D200 C2C1 3 2 1 1/2 IC100 4558 1/2 IC100 4558 5 6 7 TREBLE FILTER, 4. ORDER HP P2-5 TREBLE IN D12D4 C14 R32 TO IC1 PIN 6 PA MUTE P2

36、-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

37、 R114R129 5 6 1/2 IC104 4558 73 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 1 TR7 D8D9 POWER LIMITER BASS (LONG AND SHORT TERM) PLIM P2-6 TO PCB3 ?P 25 NTC R78 9V TR5 TR6 TREBLE PROTECT T

38、R3 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 + - + - + - + - + - + - +

39、- + - + - + - + - + - + - + - + - + - Block diagram for Power amplifier ABO-CENTER v/HENRIKSENS ELEKTRONIK 8. Available partsAvailable parts 8.8. 9001 9002 9003 9008 9009 9010 9011 9012 9013 9014 9015 9016 9017 9004 9005 9006 9007 9019 9020 9021 9022 9023 4 4 1 2 3 3 2 1 5 5 5 5 6 6 6 7 8 9 7 8 9 7

40、7 6 6 6 5 5 5 5 10 10 6 66 10 10 10 6 6 6 6 15 14 14 10 10 14 6 5 5 16 17 18 21 21 5 5 20 5 5 5 19 19 20 5 6 6 6 6 13 13 13 13 13 13 21 21 5 19 20 19 5 5 5 205 5 5 16 17 18 6 6 6 6 10 10 14 14 11 11 10 15 14 13 9018 21 21 35 20 2225 2 36 32 34 22 22 22 21 19 31 25 Available parts BeoLab 3500 ABO-CEN

41、TER v/HENRIKSENS ELEKTRONIK Available parts 8. Available parts 900 2576302 Distance bolt 9002 34422 Chassis 9003 8480340 Tweeter 9004 3907064 Rubber 9005 3950053 Rubber belt 9006 345207 Front piece 9007 36906 Operating panel 9008 3459454 Cap, dark grey 345908 Cap, black 345906 Cap, grey 9009 3430055

42、 Cabinet, dark grey 3430056 Cabinet, black 343064 Cabinet, grey 900 28624 Clips 90 8480259 Woofer 902 3332055 Damper 903 370300 Insulating piece 904 35224 Wire holder 905 6276907 Mains socket 906 364935 Cover 907 34406 Chassis f. sockets 908 800608 Rectifier PCB 909 34422 Chassis 9020 345207 Front p

43、iece 902 345470 Cloth front, dark grey 345472 Cloth front, silver 345244 Cloth front, black 9022 303382 Wall fittings 9023 364920 Cover f. wall fittings 02Module 8006073 Switch Mode Power Supply 9Module 800607 DC/DC Converter 2622423 Insulating piece 2364066 Rivet 28695 Spring clips 20Module 800609

44、Transformer left, type 60, 607, 608 8006092 Transformer left, type 602, 605 8006093 Transformer left, type 603 8006094 Transformer left, type 604 2Module 800606 Transformer right, type 60, 607, 608 8006062 Transformer right, type 602, 605 8006063 Transformer right, type 603 8006064 Transformer right

45、, type 604 22Module 8006087 Power Amplifier 6200044 Band cable 25Module 800609 NTC PCB 3Module 8002938 LF Supply and Control 32Module 8002935 Cross Field 34Module 8002932 Plug PCB 35Module 8002937 Display, Keyboard and IR Receiver 36Module 8002944 Microcomputer Survey of screws and washers 2046032 A

46、llen screw, 6 x 32.7mm 2 286267 Spring 3 2622487 Washer 4 20376 Screw, 3 x 6mm 5 20554 Screw, 3.5 x 25mm 6 20388 Screw, 3 x 8mm 7 2036082 Screw, 2.5 x 8mm 8 75309 Solder tag 9 2640054 Washer 0 20056 Screw, 3 x 6mm 2038 Screw, 3 x 8mm 3 262204 Washer 4 262403 Washer 5 20377 Screw, 3 x 3mm 6 203803 Sc

47、rew, 3 x 2mm 7 2622247 Washer, 3.2 x 0.2 xmm 8 3358305 Heat sink 9 20567 Screw, 3.5 x 4mm 20 2625039 Lock washer 2 20055 Screw, 3 x 0mm ABO-CENTER v/HENRIKSENS ELEKTRONIK 8.2 Available parts Accessories 303302 Wall bracket, type 607 303235 Wall bracket 339048 Bag with parts f/Wall bracket 303333 Wall plate 3390468 Bag