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Bang & Olufsen BeoLab 3 6881 Service Center Manual

Summary of BeoLab 3 6881

  • Page 1

    Beolab 3 type 6881, 6882, 6883, 6884, 6885, 6886, 6887, 6888 from serial no. 19355490 service center repair guide english.

  • Page 2

    Contents how to service, warnings, pin code protection .......................................... 1 english ................................................................................................ 1.1 german .......................................................................................

  • Page 3

    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 the customer. The loudspeaker...

  • Page 4

    1.2 warnings – pin code protection, english static 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 fingerpri...

  • Page 5

    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) width – 135mm len...

  • Page 6

    3.1 overall block diagram overall block diagram 3.1 3.1 overall block diagram.

  • Page 7

    3.2 wiring diagram wiring diagram 3.2 3.2 wiring diagram 6.

  • Page 8

    4.1 available parts available parts 4.1 4.1 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 9022 9024 9018 9019 9021 9025 9012* 5 99...

  • Page 9

    Available parts 4.2 beolab 3 9001 3459461 top plate 9002 3452044 acoustic lens w/fi lt 9003 3912004 filt 9004 3459462 tweeter cover w/gasket 9005 3947851 gasket 9006 8480381 tweeter 19mm w/gasket 9007 3947852 gasket 9008 2019002 screw 9009 2622011 thermal conductive rubber 9010 3947057 gasket 9011 3...

  • Page 10

    4.3 available parts packing 3917147 foam foil 3396208 set of foam 3392794 outer carton wire bundles 6277821 wire bundle, pcb2 - pcb5 6277822 wire bundle, pcb3 - pcb5 6277823 wire bundle, pcb3 - pcb6 parts not shown 3375060 product cover 3395 305 back-up suitcase 3629144 special tool f/bezel 3629000 ...

  • Page 11

    Available parts 4.4 floor stand 2165 9501 3390647 bag w/top, screws, spikes (9506), and 2 hexagon spanners 9502 2950239 tube 9503 3459466 cover w/tape 9504 2752048 bottom w/tape 9505 3103392 foot 9506 3103390 spike 3396205 foam - order 2 pcs. 3392780 outer carton 3504725 guide 9501 incl. Pos. No. 90...

  • Page 12

    4.5 available parts table stand 2166 9510 2627000 protection washer 9511 2950238 tube 9512 2752046 bottom 9513 3103358 foot 3396203 foam - order 2 pcs. 3392778 outer carton 3504726 guide 9512 9513 9511 9510

  • Page 13

    9520 3390646 bag w/protection washer, screw, and hexagon spanner 9521 2854225 plate 9522 3151796 fitting 3396204 foam - order 2 pcs. 3392779 outer carton 3504727 guide wall bracket 2167 list of available parts 4.6 9521 9520 9522 9520

  • Page 14

    4.7.

  • Page 15

    Service hints and adjustment service hints doing fault searching, the beolab 3`s led can give you a hint. If the led turns orange in colour it can be a result 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 ...

  • Page 16

    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 old chassis. No further adjustment is used, as long as the driver units not have been replaced. When a driver unit is re...

  • Page 17

    6.1 beolab 3 in serviceposition beolab 3 in serviceposition 1 2 3 4 1 2 1x tx10

  • Page 18

    6.2 replace top plate replace top plate 1.

  • Page 19

    6.3 replace acoustic lens 2 1 replace acoustic lens see page 6.1, beolab 3 in serviceposition see page 6.2, remove top plate 2x tx15.

  • Page 20

    6.4 replace tweeter cover replace tweeter cover see page 6.1, beolab 3 in service position see page 6.2, remove top plate see page 6.3, remove acoustic lens 1.

  • Page 21: Esd

    6.5 replace tweeter replace tweeter see page 6.1, beolab 3 in service position see page 6.2, remove top plate see page 6.3, remove acoustic lens see page 6.4, remove tweeter cover 2 1 3x tx15 2x esd esd-mat.

  • Page 22

    6.6 replace bezel replace bezel see page 6.1, beolab 3 in service position 1 2.

  • Page 23: Esd

    6.7 replace woofer 2 1 replace woofer see page 6.1, beolab 3 in serviceposition see page 6.6, remove bezel 4x tx10 3x esd esd-mat.

  • Page 24: Esd

    Replace passive radiator replace passive radiator 6.8 2 1 see page 6.1, beolab 3 in serviceposition see page 6.6, remove bezel 4x tx10 3x esd esd-mat.

  • Page 25: Esd

    Replace pcb 5 2 1 see page 6.1, beolab 3 in serviceposition see page 6.2, remove top plate 1x tx30 2x see page 6.3, remove acoustic lens see page 6.4, remove tweeter cover replace pcb 5 6.9 see page 6.6, remove bezels see page 6.7, remove woofer see page 6.8, remove passive radiators 5p15 5p17 pcb 5...

  • Page 26: Esd

    Replace main chassis 2 1 6.10 replace main chassis see page 6.1, beolab 3 in serviceposition see page 6.2, remove top plate see page 6.3, remove acoustic lens see page 6.4, remove tweeter cover see page 6.5, remove tweeter see page 6.6, remove bezels see page 6.7, remove woofer see page 6.8, remove ...

  • Page 27

    6.11 converting mains voltage supply converting mains voltage supply see page 6.10, remove main chassis.

  • Page 28

    Insulation test beolab 3 must be insulation tested if it has been dismantled. Make the test when the beolab 3 is reassembled and is ready to be returned to the customer. Insulation test at the service center short-circuit the two pins of the mains plug and connect them to one of the terminals of the...

  • Page 30

    Bang & olufsen dk-7600 struer denmark phone +45 96 84 11 22* fax +45 97 85 39 11 3538052 06-06.