BO-Beosound4_type2851_to_2860-int-sm 电路图 维修手册.pdf

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1、BeoSound 4 Type 2851, 2852, 2853, 2854, 2855, 2857, 2858, 2859, 2860 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 ! RadioFans.CN 收音机爱 好者资料

2、库 CONTENTS Survey of modules . 1.1 How to service . 1.2 PIN-code . 1.3 Warnings . 1.5 Final check after repair . 1.6 Fault flow chart . 2.1 Placement of measuring points . 2.2 Placement of magnet . 2.11 Service mode . 3.1 Service tips . 4.1 Repair tips . 4.2 Replacement of modules . 5.1 Specificatio

3、n guidelines for service use . 6.1 Wiring diagram . 7.1 Available parts . 8.1 RadioFans.CN 收音机爱 好者资料库 Survey of modules 1.1 PCB1 . Socket PCB2 . Master PCB3 . Magic PCB4 . Light PCB5 . Turn wheel PCB6 . Main microprocessor PCB7 . Codec PCB8 . Tacho PCB9 . Headphone PCB10 . Display PCB11 . SD/MMC car

4、d reader PCB12 . Switch 37Module . DAB PCB61 . SMPS PCB85 . FM tuner EU/JP 96Module . CD unit Survey of modules 37 2 10 12 8 96 61 85 5 5 9 3 4 4 7 11 1 Keyboard 6 RadioFans.CN 收音机爱 好者资料库 1.2 How to service How to service Converting mains supply voltage The unit has separate type nos. for each marke

5、t, due to country approvals. The mains voltage is determined by the type nos. of the unit, there are only two internal mains voltage settings (a jumper) on the SMPS, 100/120V and 230/240V AC (P108, when mounted = 100/120V). Front line service The BeoSound 4 unit has been developed for simple module

6、exchange to follow the on-site service strategy. Module exchange is possible onsite, in the shop or in the service workshop whatever is most convenient in each case. For on-site service a back-up suitcase must be used. Module exchange is the recommended way to perform service, due to the fact that m

7、ost of the modules are multi-layer based, and most of the circuits are on a single main PCB. An electrical fault symptom can be removed during one visit to the customers home, if you bring a BeoSound 4 back-up suitcase with you. Is it a mechanical symptom, the particular part must be brought with yo

8、u separately. Service documentation Service documentation for BeoSound 4 will be a Service manual with part no. for the back-up suitcase, electrical and mechanical parts, users guides etc. PIN-code 1.3 PIN-code The product has a 4 digit PIN-code, of the users own choice, which must be entered if the

9、 product has been disconnected from the mains for 15-30 min. If the PIN-code is activated, and the product has been without mains for 15-30 min., the user will be asked to enter the 4 digit PIN-code when the product is switched on. Before the product is handed in to service it is a good idea to ask

10、the customer to deactivate the PIN-code. The PIN-code is activated when the product is shipped from Bang it must go back to Bang there is no need to test the functionality of the PIN-code protection. Exchange of software EEPROM on PCB6 When exchanging the EEPROM on PCB6, the data from the microproce

11、ssor will be written into the EEPROM, when selecting any source e.g. RADIO. It is possible to borrow an EEPROM from another BeoSound 4 to test, if there is suspicion of a fault in the original EEPROM. The EEPROM will always adopt the data from the main microprocessor. Replacing of both PCB6 and EEPR

12、OM 6IC6 If both PCB6 and the EEPROM 6IC6 need to be replaced it is necessary to have them pre-programmed from Bang it must go back to Bang there is no need to test the functionality of the PIN-code protection. Exchange of software EEPROM on PCB6 When exchanging the EEPROM on PCB6, the data from the

13、micro-processor will be written into the EEPROM, when selecting any source e.g. RADIO. It is possible to borrow an EEPROM from another BeoSound 4 to test, if there is suspicion of a fault in the original EEPROM. The EEPROM will always adopt the data from the main micro-processor. Replacing of both P

14、CB6 and EEPROM 6IC6 If both PCB6 and the EEPROM 6IC6 need to be replaced it is necessary to have them pre-programmed from Bang & Olufsen with the correct serial no., otherwise they will not work. Please contact Bang & Olufsen. 6P08 Replacement of modules 5.2 Disassembly overview PCBModule namePage S

15、ocket5.5 2Master5.6 3Magic5.8 4Light5.9 5Turn wheel5.0 6Main microprocessor5.7 7Codec5. 8Tacho5.2 9Headphone5.3 0Display5.4 SD/MMC card reader5.5 2Switch5.6 37ModuleDAB5.20 6SMPS5.7 85FM tuner5.8 96ModuleCD unit5.9 Cabinet5.2 Clamper cover5.22 Clamper unit5.23 Base5.24 Door mechanism5.25 Drivebelt5.

16、26 Finger niche5.27 Keyboard5.28 Motor5.29 Replacement of modules 5.3 - Push front glass to top position and remove it - Remove all cables 4x TX10 - Remove screw covers at top - and all screws - Remove cables BeoSound 4 in service position 8P1 8P3 5P2 Plug with lock! 8P and 5P2 5.4 - Remove screws a

17、t front 3x TX10 - Remove screws at socket panel Remove Chassis + 5.3 BeoSound 4 in Service Position 4x TX10 - Remove cables - Pull out chassis 2P1002 2P1009 5.5Replace PCB, Socket - Pull off socket cover - Remove plugs - Remove screws + 5.3 BeoSound 4 in Service Position - Remove plugs + 5.4 Remove

18、Chassis 4x TX20 1P7 1P1 GND! 85P100 7P101 Snap-locks! 5.6Replace PCB2, Master 2x TX10 - Remove electrical chassis from mechanical chassis - Remove cables PCB2 2P1004 2P1008 + 5.3 BeoSound 4 in Service Position - Remove screws and release snaplocks + 5.4 Remove Chassis 76P103 2P1003 - Remove plugs 5.

19、7 - Remove screws 6x TX10 - Remove plugs on the back of PCB2 Replace PCB2, Master 2P1005 2P1013 2P1010 2P1012 2P1011 - Transfer EEPROM software IC3 IC6 EEPROMPCB6 Use IC-pliers for replacement (part no. 362945) IC SOCKET EEPROM 5.8 + 5.3 BeoSound 4 in Service Position - Remove screws - Remove PCB3,

20、Magic + 5.4 Remove Chassis Replace PCB3, Magic 2x TX7 - Remove PCB9, Headphone 5.9Replace PCB4, Light + 5.3 BeoSound 4 in Service Position - Remove PCB4, Light + 5.27 Remove finger niche 5.0 - Remove cable - Release snaplocks and push out Replace PCB5, Turn wheel and parts (left and right) + 5.3 Beo

21、Sound 4 in Service Position - Dismantle turn wheel 5P1 2x TX10 PCB5 Base Wheel Snaplock! 5.Replace PCB7, Codec 7P100 7P101 - Remove plugs - Remove screw x TX10 2x TX10 - Remove electrical chassis from mechanical chassis + 5.3 BeoSound 4 in Service Position - Remove screws and release snaplock + 5.4

22、Remove Chassis 5.2Replace PCB8, Tacho + 5.3 BeoSound 4 in Service Position + 5.4 Remove Chassis - Remove screws and plug + 5.23 Remove Clamper unit 3x TX10 - Remove screws - Remove drive belt - Remove plug and gear wheel 8P3 P1 4x TX10 5.3Replace PCB9, Headphone + 5.3 BeoSound 4 in Service Position

23、- Remove PCB9, Headphone + 5.4 Remove Chassis + 5.8 Remove PCB3, Magic 5.4Replace PCB0, Display 3x TX10 - Remove screws - Remove cable + 5.3 BeoSound 4 in Service Position CON1 Plug with lock! CON 5.5Replace PCB, SD/MMC card reader + 5.3 BeoSound 4 in Service Position - Remove screws - Pull out PCB,

24、 SD/MMC card reader 2x TX6 5.6Replace PCB2, Switch + 5.3 BeoSound 4 in Service Position - Remove screw + 5.4 Remove Chassis 5.7Replace PCB6, SMPS 7P100 7P101 - Remove plugs - Remove screws 4x TX10 2x TX10 - Remove electrical chassis from mechanical chassis + 5.3 BeoSound 4 in Service Position - Remo

25、ve screws and release snaplock + 5.4 Remove Chassis 5.8Replace PCB85, FM tuner - Remove screws - Remove plugs on th back of PCB85 + 5.3 BeoSound 4 in Service Position 3x TX10 + 5.4 Remove chassis 85P106 85P103 85P100 5.9Replace 96Module, CD unit 2x TX10 - Remove electrical chassis from mechanical ch

26、assis + 5.3 BeoSound 4 in Service Position - Remove screws and release snaplock + 5.4 Remove Chassis 4x TX10 - Remove screws - Pull off CD unit 5.20 - Remove plugs - Remove screws + 5.3 BeoSound 4 in Service Position 3x TX10 Replace 37Module, DAB + 5.4 Remove chassis 37P201 37P101 5.2Replace Cabinet

27、 + 5.3 BeoSound 4 in Service Position + 5.4 Remove Chassis + 5.8 Remove PCB3, Magic + 5.24 Remove Base 5.22Replace clamper cover + 5.3 BeoSound 4 in Service Position + 5.4 Remove Chassis - Release snaplocks + 5.23 Remove Clamper unit 5.23Replace Clamper unit + 5.3 BeoSound 4 in Service Position + 5.

28、4 Remove Chassis 4x TX10 - Remove screws - Lift off clamper Note! Take care that the arm is placed correctly ! + 5.9 Remove CD unit 5.24 4x TX10 Replace Base + 5.3 BeoSound 4 in Service Position - Remove screws + 5.4 Remove Chassis 5.25Replace door mechanism + 5.3 BeoSound 4 in Service Position + 5.

29、4 Remove Chassis + 5.23 Remove Clamper unit + 5.2 Remove Motor unit - Check that the alignment is correct Scratch in the plastic 5.26Replace drivebelt + 5.3 BeoSound 4 in Service Position + 5.4 Remove Chassis - Remove screws and plug + 5.23 Remove Clamper unit 3x TX10 - Remove screws - Remove Driveb

30、elt P1 4x TX10 5.27 - Remove finger niche Note: lift free of “lock” 4x TX6 Replace Finger niche + 5.3 BeoSound 4 in Service Position - Remove screws 5.28 - Remove screws - Pull out keyboard 4x TX6 Replace keyboard + 5.3 BeoSound 4 in Service Position - Remove cables + 5.5 Remove SD/MMC card reader +

31、 5.27 Remove finger niche 5P1 5P1 5.29Replace motor + 5.3 BeoSound 4 in Service Position + 5.4 Remove Chassis - Remove screws and plug + 5.23 Remove Clamper unit 3x TX10 - Remove screws - Remove drivebelt - Remove screws and plug 3x 8P3 P1 4x TX10 5.30 Specification guidelines for service use 6. Spe

32、cification guidelines for service use BeoSound 4 With FM and RDS Type 285 EU 230V Type 2852 GB 230V Type 2853 US 20V Type 2854 JP 00V Type 2855 AUS 240V Type 2857 TWN 20V Type 2858 KOR 230V Type 2859 LAT 230V Type 2860 CHK 230V Preamplifier section Intermod. distortion 0.%, IHF Frequency: AUX in 20H

33、z 20kHz Signal to Noise ratio: AUX, A-weighted, volume 80 90dB, typ. 97dB Channel separation 50dB, typ. 63dB Channel unbalance dB Tuner, FM section FM range EU/US 87.5 08MHz FM range for type 2854 Japan 76 90MHz Usable sensitivity mono 2dBf 50dB quieting sensitivity mono 20dBf Signal-to-noise ratio

34、mono 68dB, typ. 70dB Signal-to-noise ratio stereo 62dB, typ. 65dB Frequency response mono 30Hz 5kHz, 2dB Frequency response Stereo 30Hz 5kHz, 2dB RDS PS-Name, RadioText, Clock Tuner, DAB section Receiving bands 74 240MHz (band 3) 452 492MHz (band L) Sensitivity (BER = 0e-4) -95dBm Adjacent channel r

35、ejection (BER =0e-4) 35dB Out of band rejection (BER = 0e-4) 45dB Signal/noise ration (kHz) 95dB Frequency response 5 20000Hz dB Decoding Up to 256kbit/s Sampling Half and full rate IR operation Beo4 recommended CD player Playback CD-DA, CD-R/RW, (Audio format only) Testdisc SBC 444A (part no. 36340

36、64) SBC 429 CD, disc types 2cm (5”), 8cm (3”) Frequency response 20Hz 20kHz dB Signal/noise ratio: Linear, below 80kHz 90dB / 76dB with volume 80 UNW 98dB / 90dB with volume 80 A-Weighted 03dB / 97dB with volume 80 Channel separation: kHz 85dB 20Hz 20kHz 75dB 6.2 Specification guidelines for service

37、 use Dynamic range (kHz) 92dB Channel unbalance (kHz) dB THD+Noise: kHz, 0 dBFS, volume 76 -85dB / -75dB with volume 76 SD Player/recorder Storage media Secure Digital cards (SD) MultiMediaCard (MMC) Or 00% SD SanDisk compatible Capacity All capacity Audio Codec playback MP3 format: Sampling frequen

38、cies: 8, .025, 2, 6, 22.05, 24, 32, 44. and 48kHz Constant or variable bit rates: 8, 6, 24, 32, 40, 48, 56, 64, 80, 96, 2, 28, 60, 92, 256 and 320Kbps WMA: Sampling frequencies: 8, .025, 6, 22.050, 32, 44. and 48kHz Bit rates: 64, 80, 96, 28, 60 and 92Kbps Audio codec recording format MP3 format CBR

39、 28kbit/s in stereo 44.kHz sample frequency 6 bit sample resolution Testdisc: SBC429, Bitrate: 28kbit/sec, Codec: MPEG Layer 3 Frequency response: Recorded from CD, fs = 44.kHz 20Hz 5kHz dB Signal/noise ratio: LINEAR, below 80kHz 76dB UNW 90dB A-Weighted 97dB Dimensions W x H x D 280 x 30 x 240mm /

40、.0 x 2.2 x 9.4 in Weight 4kg Cabinet finish Smoke coloured glass Power consumption Stby. W, typical 2W Accessories Floorstand Type 280 Wall brackets Type 28 Connections Master Link x Pin Data- -0.25V Pin 2 Data+ +0.25V Pin 3 ML sense 0 5V Pin 4-8 NC Pin 9 ATI/Tx Pin 0 ATI/Rx Pin Supply voltage -7V -

41、5V, stby. -3V -5V Pin 2 Supply voltage 7V 5V, stby. 3V 5V Pin 3 Audio L- V bal., Rin 2.2MW Rout 75W Pin 4 Audio L+ V bal., Rin 2.2MW Rout 75W Pin 5 Audio R- V bal., Rin 2.2MW Rout 75W Pin 6 Audio R+ V bal., Rin 2.2MW Rout 75W Specification guidelines for service use 6.3 Audio Aux Input/Output x AUX

42、in L/R Phono 2V RMS 22 47kW AUX out L/R Phono .3V RMS 0.2 2.5V, OFF = 2.5V, OFF = 3.5V. Low 6270881 W24 P1 P2 P1006 P1 P1007 P1001 P101 P1010 W21 6277708 W20 6277707 W25 6270864 P102 08 Tacho P2 P1009 W17 6200104 7211386 P1002 FFC 0.5mm Socket30/30pins P1 05 Turn Wheel 06 Main microcomputer 05 Turn Wheel Display 10 Master 02 SMPS 61 Head phone 09 Socket 01 SD/MMC card reader 11 CD unit 96 P103 W12 6200099 P1005 FM Tuner 85 DAB 37 P1013 P1 W23 6200103 P101