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Bang & Olufsen Beolab 4000 MKII 6642 Service Manual

Summary of Beolab 4000 MKII 6642

  • Page 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 !.

  • Page 2

    Contents survey of modules .................................................................... 1.1 how to service .......................................................................... 1.2 warnings – insulation test ......................................................... 2.1 adjustments ........

  • Page 3

    Pcb01 amplifier pcb02 smps pcb03 main pcb pcb04 led survey of modules 1 2 3 4 survey of modules 1.1.

  • Page 4

    How to service front line service beolab 4000 mkii is to be serviced in the customer’s 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 the customer. Beola...

  • Page 5: Esd

    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 the product. The surfaces on the product are very sensitive, so handling should be done...

  • Page 6

    Adjustments adjustments after replacing pcb03, main pcb read out the adjustment position of the old potentiometers, r301 & r312, and set the new potentiometers to the same position. Adjustments of bass/treble levels each loudspeaker is individually adjusted from production to ensure optimal stereo p...

  • Page 7

    Repair tips 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. Power link mk iii check loudspeaker units the loudspeaker units can be checked ...

  • Page 8

    4.2.

  • Page 9: Esd

    5. Replacement 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 pcb...

  • Page 10

    5.2 beolab 4000 mkii in service position - remove front frame line l r 1 2 power link - remove profile - remove screws for baffle - remove cables connected to beolab 4000 mkii 2x tx10 0x tx10

  • Page 11

    5.3 beolab 4000 mkii in service position - remove cables for speaker units.

  • Page 12

    5.4 replace pcb0, amplifier + 5.2 beolab 4000 mkii in service position - remove screws 4x tx10 - remove cables on backside of pcb 4p300 4p301.

  • Page 13

    5.5 replace pcb02, smps 6x tx10 - remove screws and pull out pcb02, smps + 5.2 beolab 4000 mkii in service position - remove cables 2p1 2p2.

  • Page 14

    5.6 replace pcb03, main pcb + 5.2 beolab 4000 mkii in service position - remove screws and pull out pcb03, main pcb - remove ground cable! 5x tx10 - remove cables ground 3p300 3p103 3p100

  • Page 15

    5.7 replace 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

  • Page 16

    5..

  • Page 17

    6.1 specification guidelines 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 g...

  • Page 18

    6.2.

  • Page 19

    7. Block diagram – wiring diagram 7. 7. Block diagram – wiring diagram p301 4/5pins plug > > > > p300 plug > > > > > > 8/8pins amplifier 01 plug p300 > > > > > > 8/8pins w03 p103 plug > > 3/3pins plug p104 > > 3/3pins w04 04 led main pcb 03 smps 02 p100 plug > > > > > 8/8pins p2 plug > > > > > 8/8pi...

  • Page 20

    Available parts 8. 8. Available parts 8. Baffle baffle – left baffle – right ! ! 9001 9002 9104 9101 9102 9102 9103 9001 9005 9004 9003 9003 9014 9006 9007 9008 9009 9013 9012 9010 9011 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 ...

  • Page 21

    Beolab 4000 mkii 9001 3451181 top/bottom, red 3451227 top/bottom, blue 3451242 top/bottom, dark grey 3456201 top/bottom, aluminium 3456202 top/bottom, black 3456205 top/bottom, yellow 9002 3358346 heat sink incl. Pos. Nos. 9004, 9005 9003 3947350 foam tape, 10m 9004 3340136 gasket 9005 3340090 gaske...

  • Page 22

    8.3 available parts mains cables 6100273 mains cable, eu, 3m 6100329 mains cable, uk, 3m 6100307 mains cable, us, 3m 6100331 mains cable, jp, 3m 6100332 mains cable, aus, 3m 6100386 mains cable, kor, 3m 6100047 mains cable, china, 3m packing 3397996 set of foam 3392504 outer carton parts not shown 3...

  • Page 23

    Available parts 8.4 floor speaker stand – type 2069 9201 3031707 fitting 9202 2072119 fixing screw 9203 2950216 aluminium tube 9204 3459257 cover plate 9205 2752081 foot incl. Pos. No. 9210 9210 3103392 foot “soft” 9211 3103390 foot “spike” 3390616 bag w/parts (2 screws 4x12mm, 6 pcs. Of pos. No. 92...

  • Page 24

    8.5.

  • Page 26

    Bang & olufsen dk-7600 struer denmark phone +45 96 84 11 22* fax +45 97 85 39 11 3538061 03-07.