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Summary of Contents for Bang & Olufsen BeoLab 4
- Page 1 BeoLab 4 Type 6650, 6652 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 !
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Page 2: Table Of Contents
CONTENTS Survey of modules ..............1.1 How to service ................. 1.2 Warnings – Insulating test ............2.1 Adjustments ................3.1 Repair tips ................4.1 Disassembly ................5.1 Specification guidelines for service use ........6.1 Block diagram ................7.1 Wiring diagram ................ 7.2 Available parts ................. -
Page 3: Survey Of Modules
Survey of modules Survey of modules PCB1 Amplifier PCB2 SMPS PCB3 Filter PCB4 PCB5 Switch PCB6 Input... -
Page 4: How To Service
System, Exchange Module. Delivery As there is only one type number for BeoLab 4, the product can be used for all markets with 100 to 240 Vac mains voltage. When you order BeoLab 4 (set of two) this includes two mains cables, two Power Link cables and two boxes with the three front covers in the chosen colour. - Page 5 All cabinet parts as e.g. the socket panel can be changed on-site. All surfaces can be cleaned with a mild detergent. Internal parts are supplied as service kits, e.g. the loudspeakers, PCB’s etc. A product cover (soft) for service, black, can be ordered for transport of BeoLab 4.
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Page 6: Warnings - Insulating Test
Warnings – Insulating test Warnings STATIC ELECTRICITY MAY DESTROY THE PRODUCT When electrical replacements 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 with great care to avoid damage. -
Page 7: Adjustments
Adjustments Adjustments Adjustments after replacing PCB3 or PCB5 Read out the adjustment position of the old potentiometers, VR601 & VR701, and set the new potentiometers to the same position. PCB3 – VR601 VR601 PCB5 – VR701 VR701... -
Page 8: Repair Tips
Repair tips 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. The loudspeaker units can be checked by an ohm-meter (tweeter 5.7Ω... -
Page 9: Disassembly
Disassembly - Pull off front covers... - Page 10 Remove woofer - Remove cables - Pull off front cover - Remove screws TX20 - Remove cables Do not pull - release lock! Cables PCB xx ESD-Mat...
- Page 11 Remove tweeter - Remove cables - Pull off front cover - Remove screws TX20 - Remove cables Do not pull - release lock! Cables PCB xx ESD-Mat...
- Page 12 Replace cabinet ☞ 5.1 Remove front cover ☞ 5.2 Remove woofer ☞ 5.3 Remove tweeter 1P301 - Remove plug PCB xx ESD-Mat - Remove screws TX20 - Pull off cabinet Note that this may require some effort - Remove plug - Remember to transfer label to new cabinet! 3P612...
- Page 13 Replace port ☞ 5.4 Remove cabinet - Remove screws - Lift off port as shown...
- Page 14 Replace PCB1, Amplifier ☞ 5.4 Remove cabinet ☞ 5.5 Remove port - Remove screws PCB xx ESD-Mat - Gently pull off bracket with PCB1 mounted - Remove screws and pull off PCB1...
- Page 15 Replace PCB2, SMPS ☞ 5.4 Remove cabinet - Remove plugs PCB xx ESD-Mat - Remove screws - Pull off PCB2...
- Page 16 Replace PCB3, Filter ☞ 5.4 Remove cabinet 3P606 - Remove plugs 3P610 PCB xx ESD-Mat - Remove screws - Gently pull off PCB1 and PCB3 - Pull off PCB1...
- Page 17 Replace PCB5, Switch ☞ 5.4 Remove cabinet ☞ 5.5 Remove port ☞ 5.8 Remove PCB3, Filter - Remove screws - Pull off as shown (Be aware of the cables!) PCB xx ESD-Mat - Remove plugs 5P602 5P603 - Remove screws...
- Page 18 5.10 Replace PCB6, Input ☞ 5.4 Remove cabinet ☞ 5.5 Remove port ☞ 5.8 Remove PCB3, Filter ☞ 5.9 Remove PCB5, Switch - Remove screw PCB xx ESD-Mat - Remove bracket...
- Page 19 Replace bottom plate 5.11 ☞ 5.4 Remove cabinet ☞ 5.5 Remove port ☞ 5.7 Remove PCB2, SMPS ☞ 5.8 Remove PCB3, Filter ☞ 5.9 Remove PCB5, Switch ☞ 5.10 Remove PCB6, Input - Remember to transfer label...
- Page 20 5.12...
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Page 21: Specification Guidelines For Service Use
Specification guidelines for service use Specification guidelines for service use BeoLab 4 Type 6650, 6652 Dimensions W x H x D 19.7 x 20.5 x 21.5 cm Weight 1.7 kg Cabinet finish Black, red, blue, dark grey Power consumption Typical: 7 W, Stand-by: 0.5 W... -
Page 22: Block Diagram
Block diagram Block diagram... -
Page 23: Wiring Diagram
Wiring diagram Wiring diagram... -
Page 24: Available Parts
Available parts Available parts BeoLab 4 9001 9001 9002 9003 9004 9001 9009 9010 9011 9012 9013 9005 9014 9006 Incl. pos. no. 9006 9007 9008... - Page 25 Available parts BeoLab 4 9001 1604244 Front cover, red 1604246 Front cover, black 1604248 Front cover, blue 1604249 Front cover, dark grey 9002 3430049 Cabinet 9003 8480048 Tweeter 9004 8480049 Woofer 9005 6100273 Mains cable, EU 6100329 Mains cable, UK...
- Page 26 Available parts Floor Stand 2178 1217811 Incl. pos. nos. 9102, 1 9101 9102 9103 9104 9101 3932011 Tube incl. pos. nos. 9102, 1 9102 2369004 Cable clip 9103 3162238 Cover plate 9104 3103392 Rubber foot 2046017 Screw 6 x 16mm 3390078 Bag w/parts 3390082 Cable manager 3507402 Guide f/2178...
- Page 27 Available parts Packing – Floor Stand 9301 9302 9303 9301 9301 3396330 Foam packing, set 9302 3016012 Guide f/cover plate 9303 3392486 Outer carton...
- Page 28 Available parts Ceiling bracket 2177 1217711 3507401 Guide Wall bracket 2179 1217911 3507403 Guide...
- Page 30 Bang & Olufsen DK-7600 Struer Denmark Phone +45 96 84 11 22* Fax +45 97 85 39 11 3538032 12-06 A...
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