BeoLab 3500 MKII
Contents
1. Wiring diagram P8 LLEV 1 36 in NN 0 aaa K bd Ked bad a Br ba ba PFAIL weesde d s MLCON 3 ERR ug gg eg MCLRX 4 MICRO MCLTX COM al lolalolmolin e nn al lelalol oln ml nfm MLRX ejeje alis wm 7 PUTER 34 7 SDA 8 MAINS STKEY 9 P19 5 PLIM 10 PLUG PCB 230VAC P25 DATA 11 230VAC S 1 9V 1 CLOCK 12 P23 2 9V 2 OE 13 1 RELI 1 SWITCH MODE 3 GND 3 NC 14 2 REL2 2 4 BASL 42. Rated power tweeter 35W 80 Amplifier signal to noise ratio gt 80 dBA 1W 8Q Signal to noise ratio gt 74 dBA full volume Frequency range 20 20 000 Hz 0 1 dB Harmonic distortion lt 0 1 Total harmonic distortion lt 0 3 IHF Cross talk 50 dB Active crossover network 24 dB octave Linkwitz Riley Low frequency equalization 12 dB 60 250 Hz ABL High pass filter 30 dB octave 60 Hz Connections Mains Cable included 3 meters 230V AC 1601 EU 1607 KOR 1608 CHK 240V AC 1602 GB and 1605 AUS 120V AC 1603 USA CDN 100V AC 1604 JAP BeoLink Wireless 1 W1 8 pin DIN 45326 socket Dimensions Total dimensions W x H x D on wall 11x9 5x11 cm Power consumption operation 95 watts 230V Power consumption stand by 1 watt Dot in display 3 watt Watch in display Weight 0 kg without stand Optional accessories Beo4 Type 1627 Wall bracket Type 1607 3031302 Wall bracket 3031235 Wall plate 3031333 Table stand Type 1606 1160611 Cable cover 2560276 10 pieces x 2 5m Subject to change without notice BANG amp OLUFSEN Wiring diagram 7 1 7 1 Wiring diagram
3. L1 gu SPEAKER Adjustment of bass treble sound level To be carried out only when replacing a speaker unit or PCB36 Microcomputer TEST MODE 01 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 indicate that the product is ready for speaker calibration Press GO The display shows the present adjustment XXX 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 gt gt or lt lt to change unit of adjustment and change the value by pressing the digit keys When all four speakers have the desired encoding press STORE and abandon test mode by pressing STOP 2 2 Adjustments BANG amp OLUFSEN Replacement of PCB36 Microcomputer Replacement of a speaker unit The bass and treble levels of the speakers are stored electronically in the Microcomputer PCB36 When replacing PCB36 the original bass and treble level values must be restored Install the new Microcomputer see section 4 Disassembly if necessary In TEST MODE 01 enter the values printed on the label in the socket well LT left treble X LB left bass X RT right treble X RB right bass X Press STORE STORE when all four speakers have been encoded as desired A rated value in dB is printed on the back
4. GND 15 20 3 GND 3 POWER SUPPLY 5 TREB L 5 a sum POWER AMPLIFIER SV 17 TRANSFORMER LEFT 7 PMUTE 7 TIMER 18 8 PFAIL 8 LEFT MUTE 19 i IRRX 20 P20 5 NC 21 230VAC 3 STROBE 22 P7 OVAC saja 2 o o La D Eu bd La a Les xime TS ajo moja mn P24 al P8 E al sos 5 918 Olaf a gt EFAESAQ ESQERE ul Lo Sag Zi Is Selor 3313 Saa SI access gt 22 gt a msm ON cof O TiN my ji 25 P4 1 45V ST BY 2 GND NTC 3 5V ST BY 4 GND 5 BASL 6 GND 7 TREBL 8 GND 9 9v LLEV 22 10 9v PFAIL 21 2 11 PUM MLCON 20 12 PMUTE MCLRX 19 13 Pra MCLTX 18 14 PON MLRX 17 MLTX 16 SDA 15 CROSS FIELD PCB ver STKEY 14 PS 1 m MCL PLIM 13 2 SDA DATA 12 3 SCL CLOCK n 4 GND OE 10 5 BASL NC 9 6 GND GND 7 TREBL GND 7 8 PLM 45V 6 9 PMUTE TIMER 5 10 PFAIL MUTE 4 IRRX 3 NC 2 STROBE 11P1 12 NC T NC 25 10 49V 9 a NTC 8 MLL 7 MLL 6 MLR 5 MIRE GND 4 PLinR 3 GNDREF 2 PLinL lt lt BI P2 P6 1 GND als CR E aseo eos a sone o a zl mw no ajo AI zz EE aO SSA jaja t noelr co DIO TIN S o Joo I o LN SF mn P8 yl 3L P18 e P17 wl alta gt w 1 Eau 5 E S lx SIGE MalalslE El al Sl ll 9a 2 E EES EES EES E EE P16 P2 GREG P13 pA 7 TET 1 3 21 1 18V 6 2 9V 2 CRIE EEE EE ESA PS ea ei e ka Po A EE 2 GND 5 3 GND 3 22 PS 1 9 3 9V 4 31 4 BASSR 4 TRANSFORMER RIGHT 4 18V E 5 TREBR 3 5 GND 2 6 PLIM 6 6 9V 1 7 PMUTE 7 8 PFAIL POWER AMP
5. Status feedback Red 8 char LED dot matrix display program source program or rack number record clock Red LED 1 8mm Timer indication Independent sound control Volume balance bass treble loudness Compatability aster Link Wireless 1 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 aluminium optional extra Acoustics Cabinet net volume per channel 0 8 litres Woofer in each channel 9 cm 3 Tweeter in each channel 1 8 cm 3 4 Crossover frequency 3000 Hz Bass reflex principle Port Electronics Overload protection Yes Volumecontrol 12 dB in relation to central room Bass treble equalization 12 dB 100Hz 20kHz System data Principle Active Bass reflex 2 way bi amp stereo Frequency response 70 22 000 Hz 4 8 GB half field Sound Pressure Level 95 dB weighted noise IEC 268 5 stereo half room 3m Harmonic distortion 250 1 000Hz 1096 94 dB SPL 1m Harmonic distortion 1 000 5 000Hz 396 94 dB SPL 1m Minimum distance to TV 25cm 6 2 Specification guidelines for service use BANG amp OLUFSEN Power amplifiers Rated power woofer 35W 8Q
6. 2 TR7 P25 7 P24 12 Te PMUTE DS P16 7 P17 9 P5 9 P2 1 32 CROSS FIELD MLD SCL SDA SCL 3 41C1 PLD P31 PL DATA TR3 4 5 sv E 35 DISPLAY KEYBOARD amp IR JE 1A v ML DATA ML ss 4 TR6 TRANSCEIVER P3 11 LIM TR9 14 C8 a 2 2 E a fa fe Ja x la MLTX E g Fal 4 16 8 Jo 2 EE4 L LEV 3 6 CLOCK P1 22 P8 1 P8 12 P1 11 P2 19 MICROCOMPUTER x MLRX DISPLAY D I 1C1 2 7 2 41C6 DP1 STROBE ae ie 32 a Se l ES LCD PON EZ CONTRAST P9 10 STROBE Le POWER ON MUTE P8 15 GND P8 16 TIMER P8 18 MUTE P8 19 GND P4 2 IC4 TR7 8 15 P1 14 SOFT TOUCH KEYB TR3 TR4 2 41C6 IR RECEIVER 1C3 TR1 2 5 6 P9 20 BANG amp OLUFSEN Block diagram 7 5 7 5 Block diagram 7 5 Block diagram for Power amplifier 22 POWER AMPLIFIER TREBLE FILTER 4 ORDER HP TREBLE IN 2 POWER AMPLIFIER TREBLE P2 5 1 2 1 2 IC100 P1 1 2 3 4 4558 IC1 STK4171V 9v D TREBLE 35V rs Ob MUTE Gees TREBLE PROTECT TRANSISTOR TO IC1 PIN 6 p PFAIL P1 9 10 11 12 TO PCB3 P ar P2 8 P1 5 6 7 8 T 9V 35V POWER SUPPLY e H 4 lt TR2 FROM PMUTE PCB 5 4 TRI P2 7 U P9 20 amp B e H BASS IN 3 SIGNAL MUTE P2 4 5 1 2 o 7 IC1 E 6 1 2 STK4171V IC103 18 4558 P4 BASS EXTENSION BASS EXTENSION 4 ORDER LP 17 1 2 ORDER HP TH BASS 12 f M MUTE E Ic101 LINA TRANSISTO
7. 816195 DC DC Converter Insulating piece Rivet Spring clips 20Module 8006091 8006092 8006093 8006094 Transformer left type 1601 1607 1608 Transformer left type 1602 1605 Transformer left type 1603 Transformer left type 1604 21Module 8006061 8006062 8006063 8006064 Transformer right type 1601 1607 1608 Transformer right type 1602 1605 Transformer right type 1603 Transformer right type 1604 22Module 8006087 6200044 Power Amplifier Band cable 25Module 8006109 NTC PCB 31Module 8002938 LF Supply and Control 32Module 8002935 Cross Field 34Module 8002932 Plug PCB 35Module 8002937 Display Keyboard and IR Receiver 36Module 8002944 Microcomputer 0 NN 2046032 2816267 2622487 2013176 2015154 2013188 2036082 7530119 2640054 2011056 2038111 2622041 2624013 2013177 2038103 2622247 3358305 2015167 2625039 2011055 Allen screw 6 x 32 7mm Spring Washer Screw 3x 6mm Screw 3 5 x 25mm Screw 3x 8mm Screw 2 5 x 8mm Solder tag Washer Screw 3x 16mm Screw 3 x 8mm Washer Washer Screw 3x 13mm Screw 3x 12mm Washer 3 2 x 10 2 xImm Heat sink Screw 3 5 x 14mm Lock washer Screw 3x 10mm 8 2 Available parts BANG amp OLUFSEN Accessories Parts not shown Packing Survey of wire bundles Available documentatio
8. BeoLab 3500 MKII Type 1601 1602 1603 1604 1605 1607 1608 from serial no 19343452 Service Manual English German and French versions are available in the Retail System BANG amp OLUFSEN CONTENTS Survey of mod les cst ipea ete sje thee le onde tad te tes nahan 1 1 Adjustments sisi 2 1 Repair UPS EE 3 1 Disassembly E 4 1 EE o ae 5 1 Specification guidelines for service use 6 1 Wiring diagram ss 7 1 Block diagrams ooooooocooocoooWo oW WWW nennen 73 75 Available part 8 1 BANG amp OLUFSEN Survey of modules 1 1 Seen from the front a 22 2 20 rat Seen from pa hl ee ees 19 25 25 he back e EC 132 35 36 19 20 21 22 22 25 31 32 34 35 36 Switch Mode Power Supply DC DC Converter Transformer left Transformer right Power Amplifier left Power Amplifier right NTC LF Supply and Control Cross Field Plug PCB Display Keyboard and IR Receiver Microcomputer BANG amp OLUFSEN BANG amp OLUFSEN Adjustments 2 1 ADJUSTMENTS 5V When replacing IC1 LM3578 on PCB2 Switch Mode Power Supply the supply voltage may have to be adjusted to 5V 0 25V by means of R2 and R10 f 5V is above level install R2 R1 R2 f 5V is below level install R10 R3 R10
9. LIFIER DISPLAY AND IR RECEIVER DC DC LF SUPPLY AND CONTROL MICH CONVERTER 1 P11 alsislolo njolulsialal PI2 giele SmJal P15 A EE oo wo ey ja MOAN ooo 7 7 Aoa 99 qiie jojo LOUIS eei a a lala Pa es e es mim mim i aaa ISI S 222128222122 92121 9I dug z E 2 E 8 7 2 7 2 7 2 BANG amp OLUFSEN BANG amp OLUFSEN Block diagram 7 3 7 3 Block diagram FIELD KEYB amp IR D2 10V 10V 4 el P21 4 P23 4 E 5V SV SLBY 5V STBY 1 P2 3 P9 18 PE P21 3 P23 3 P4 ii AN P24 1 6 PON gt 5VASTBY dy i i L c5 P9 17 SCC P23 1 IC1 T F1 T1 u 20 TRANSFORMER LEFT mm 2 SWITCH MODE POWER SUPPLY 32 cross 35 DISPLAY P19 2 MAINS IN P1 6 N gt REL1 P21 1 ce LM3578 z REL2 P23 2 F2 P21 2 L 5V ST BY NN 22 POWER AMPLIFIER L LEFT 5V ST BY 21 TRANSFORMER RIGHT TF1 TI F3 31 LF POWER SUPPLY P10 1 MAINS IN POWER AMP 22 RIGHT SEE PCB 22 POWER AMPLIFIER LEFT 7 4 Block diagram 7 4 7 4 Block diagram BANG amp OLUFSEN 34 PLUGPCB MLD MASTER LINK Vu PL DATA 8V5 gt 15V P7 14 SOUND CONTROL IC1 PMUTE R78 TR8 10 AND P2 7 IC
10. R 4558 a a IC102 POWER AMPLIFIER BASS 4558 DN R113 7 2 ORDER HP POWER LIMITER BASS LONG AND SHORT TERM Kids AS DIFFERENTIAL FILTER d 12 ELM TO PCB3 7P LDR N 14 P26 D8 D9 B i fo 1 2 y 13 2 a Th7 BAND PASS FILTER 1 2 IC2 d No WITH ADJUSTMENT 3 R66 1 4 AMPLITUDE DETECTOR IC2 6 BASS FILTER WITH ABL 8 1 Available parts 8 1 8 1 Available parts BANG amp OLUFSEN Available parts 9008 BeoLab 3500 BANG amp OLUFSEN Available parts 8 1 Available parts Survey of screws and washers 9001 9002 9003 9004 9005 9006 9007 9008 9009 9010 9011 2576302 3114422 8480340 3907064 3950053 3451207 3169016 3459454 3459108 3459106 3430055 3430056 3430614 2816214 8480259 9012 9013 9014 9015 9016 9017 9018 9019 9020 9021 3332055 3170300 3152214 6276907 3164935 3114406 8006108 3114422 3451207 3451470 3451472 3451244 3031382 3164920 Distance bolt Chassis Tweeter Rubber Rubber belt Front piece Operating panel Cap dark grey Cap black Cap grey Cabinet dark grey Cabinet black Cabinet grey Clips Woofer Damper Insulating piece Wire holder Mains socket Cover Chassis f sockets Rectifier PCB Chassis Front piece Cloth front dark grey Cloth front silver Cloth front black Wall fittings Cover f wall fittings 9022 9023 02Module 8006073 Switch Mode Power Supply 19Module 8006107 2622423 2364066 2
11. connection cable plug and signal path amplifiers in the data transceiver circuit 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 BANG amp OLUFSEN Disassembly 4 1 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 amp IR receiver PCB36 Microcomputer and PCB32 Cross field are accessible Remove the display 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 4 2 Disassembly BANG amp OLUFSEN Service position Important The display glass and cabinet must be protected 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 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 w
12. ill not rattle against the cabinet sides BANG amp OLUFSEN Insulation test 5 1 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 plug 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 voltage control of the insulation tester until a voltage of 1 3kV is obtained Hold it there for 1 second then turn slowly the voltage down again At no point during the testing procedure any flash overs are permissible 5 2 BANG amp OLUFSEN BANG amp OLUFSEN Specification guidelines for service use 6 1 SPECIFICATION GUIDELINES FOR SERVICE USE BeoLab 3500 MKII Type 1601 EU 1602 GB 1603 USA CDN 1604 JAP 1605 AUS 1607 KOR 1608 CHK Concept X tra room product Active stereo loudspeaker with control circuitry stand by relay and IR receiver Operation Local operation Two sensi touch fields with restriced operation Mute on off listen in imer on off Remote operation Beolink 1000 or Beo4 one way optional extra
13. ir tips BANG amp OLUFSEN TEST MODE 0 3 ERROR 1 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 to 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 faulty 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 data 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 product 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
14. n 3031302 3031235 3390481 3031333 3390468 1160611 3390480 2560276 Wall bracket type 1607 Wall bracket Bag with parts f Wall bracket Wall plate Bag with parts f Wall plate Table stand Bag with parts f table stand Cable cover 10 pieces 3947547 3947350 3947548 3984215 3040016 6100273 6100329 6100307 6100247 6100086 6100386 6100047 Foam 3x19mm x 10m Foam 3x7mm x 10m Foam 6x7mm x 10m Heat sink compound Allen key 4Amm ainscable EU type 1601 ainscable GB type 1602 ainscable US type 1603 ainscable JAP type 1604 ainscable AUS type 1605 ainscable KOR type 1607 ainscable CHK type 1608 3392368 3397921 3946038 Outer carton Foam packing Foam foil 6276906 6276908 6200239 6276907 Wire bundle left 2P23 20P21 2P24 32P4 2P25 22P2 20P22 22P1 22P3 Tweeter 22P4 Woofer Wire bundle right 31GND Chassis 31P14 19P13 31P15 21P5 31P16 22P2 31P17 32P5 31P18 32P6 22P3 Tweeter 22P4 Woofer Varnished tubing PCB set Mains socket wire bundle See Retail Ordering System Bang amp Olufsen DK 7600 Struer Denmark Phone 45 96 84 11 22 Fax 45 97 85 39 11 06 06 A
15. of the new speaker unit This value is used for adjusting the sound level which is done in TEST MODE 01 Note the value on the back of the new speaker unit Replace the old speaker unit Execute the point TEST MODE 01 The rated value printed on the back of the speaker may be either positive or negative Positive If the rated value printed on the back of the speaker is positive the unit in question must be damped by X number of steps Press gt gt to select speaker if necessary 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 gt gt to select the three speakers in question and enter new digits see table Rated value in dB X steps down 0 00 0 25 0 steps down 0 50 0 75 1 00 1 25 1 step down 1 50 1 75 2 00 2 steps down Press STORE when all four speakers have the desired encoding Abandon test mode by pressing STOP BANG amp OLUFSEN Repair tips 3 1 REPAIR TIPS TEST MODE 00 TEST MODE 01 SERVICE SET UP TEST MODE 02 BeoLab 3500 can be brought into TEST MODE from stand by with a Beo4 giving access to the following functions 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 ver
16. sion number Press a The display reads A XXXXX which is the Audio mode operating time in hours x 10 Press a The display reads B XXXXX which is the Video mode operating time in hours x 10 Press a The display reads C XXXXX which is the stand by operating time in hours x 10 Press a or w to scroll in the scroll menu and abandon test mode by pressing STOP Electronic adjustment of the bass and treble levels of the speakers See section 2 Adjustments BeoLab 3500 is connected to a Beomaster as an ordinary Master link installation As regards option programming see User s Guide Display of Master Link error types Gives an identification of the error types that may occur in the Beolink installation Press MENU 02 GO The display reads ML OK The Master Link connection is OK Or NOML Master Link is not connected Or ERROR 1 Address configuration impossible 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 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 3 2 Repa
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