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1、BeoSound 3000 Type 2671, 2672, 2673, 2674, 2675, 2676, 2677, 2680 Service Manual English, German, French, Italian, Spanish illustration RadioFans.CN 收音机爱 好者资料库 1.1Survey of modules 9 90*/99 87*/ 89 5 20 18 21 28 15 2 3 86 14 12 * for CD PRO MKII 2 Interface f/PH8 .diagram E page 2.14 3 PH8 Microcomp
2、uter .diagram E page 2.14 5 Display . diagram F, M page 2.15, 2.25 9 Light and motor control . diagram F page 2.15 12 Power Supply, Input select then tighten the fi tting. Repair tips, English 5.11 Q R S 9 P78 Mounting of wire for glass doors - Turn the wire pulley G clockwise until it stops. (Close
3、d door position). - Turn the wheel H in click position. - Mount the wire in the wire pulley H (the end with the heavy spring). - Run the wire in the second innermost groove of the wire pulley H (underneath the pulley), up around the uppermost pulleys (I, J, K and L) and down around the lowermost pul
4、leys (M, N, and O). - Turn the pulley G anticlockwise. - Fasten the wire in the pulley H. - Mount the wire on pulley P and turn pulley G to check that everything is OK. Readjustment of wire - Turn the pulley G such that the centre of the pulleys G and H is fl ush with the upper edge of the tower X.
5、- Push the wire clamping clip towards the centre and tighten (not too tight). X H G I L J K N O M P 5.12 Repair tips, English Adjustment of the glass doors - Open the glass doors, press and wait for the glass doors to close and disconnect main voltage. - Remove the seven screws A in the back cover.
6、Pull out the back cover by wrenching the corners C of the back cover to the side. - Remove the fi ve screws B, and lift PCB12/15 out of the cabinet. - Loosen the top and bottom screws holding the maladjusted glass door on the wire (only one door at the time). - The maladjusted glass door can now be
7、pushed to the middle-stop and the screws at the top and at the bottom of the glass door have to be tighten fi rmly. - Connect the main voltage. Open the glass doors, press and wait for the glass doors to close and disconnect main voltage. - If necessary adjust the other glass door in the same way. N
8、ote, be careful not to loosen both glass doors at the same time. Repair tips, English 5.13 Test of Master Link DATA receiver/transmitter Test of the circuits 12TR30, 12TR31, 12TR52, 12TR53, 12TR55, 12TR56 and 12IC6. - Lift P107. - Mount on P4. - Connect a square-wave generator 10kHz 0-5 V to P107-4
9、(transmit). - Measure P107-2 (receive) with an oscilloscope; it should produce the same signal as the one transmitted by P107-4, only here it is delayed by 10-15 S. To prevent that products connected via the Master Link socket destroy the data communication in the case of an error in the data interf
10、ace, the data interface circuit has been designed so that components can be defective without causing a malfunction. For example, the diodes mounted in connection with Data- and Data+ are protection diodes which will protect against static electricity. Consequently, when making a repair, it may be n
11、ecessary to replace/check several components. If 12TR55 is defective, both 12TR55 and 12TR56 should be replaced and the diodes 12D4, 12D5, 12D19, 12D20, 12D21 and 12D22 should be checked. If 12TR56 is defective, both 12TR55 and 12TR56 should be replaced and the diodes 12D4, 12D5, 12D19, 12D20, 12D21
12、 and 12D22 should be checked. If one of the diodes 12D4, 12D5, 12D19, 12D20, 12D21 and 12D22 is defective, all of the diodes should be replaced, and 12TR55 and 12TR56 should be checked. CD laser current Across 80R3121 (4.7 ohm) the measurement in mV will show the current in the laser beam. Typical m
13、easure; ap. 300 mV. If over 450 mV the laser-head is defect. Eyepattern The eyepattern can be measured between 80P1001 pin 5 and 80C2116 (1.3Vpp). Exchange of microprocessor module PCB3 When exchanging PCB3 remember to insert the EEPROM from the defective module, because it contains valuable data (s
14、erial no., type no., PIN-code etc.). The data is not transferred to the new module untill you have been in contact with the theft protection or after 12 hours connected with mains. This means that you can try out a new PCB3 without transferring the products serial no. Etc. Note ! When the serial no.
15、 has been transferred to the micro-processor it can only be used for this specifi c product; it must go back to Bang there is no need for testing the functionality of the theft protection. When the product is connected to mains, wait 20-30 sec. before operating. All addresses in ML has to be updated
16、 after disconnecting mains voltage. 5.14 Repair tips, English Theft protection The theft protection is a 4 digit PIN-code, of the users own choice, which must be entered if the product has been disconnected from the mains for 15-30 min. The theft protection is always deactivated from the factory, it
17、 is up to the user to activate it. If the theft protection is activated, and the product has been without mains for 15-30 minutes, the user will be asked to enter the 4 digit PIN-code. Before the product is handed in to service it is a good idea to ask the customer to deactivate the theft protection
18、. Service code If the PIN-code is activated and the product is in a service situation, there is a possibility of 12 hours service by entering a 5 digit Service code which is 11111. This gives 12 hours of full functionality to service the product and make module changes without naming/registering the
19、 exchanged modules to the Customers product. The 12 hours are only running when the product is connected to mains! If the customers PIN-code or Master-code is entered the exchanged modules will be named/registered to the product. Registration of the modules cannot be changed. The service code must b
20、e entered when a source is selected and the product asks for the PIN-code “PIN _ _ _ _” press down the l (rewind) button for three seconds and the display now writes “PIN _ _ _ _ _”, and the Service code 11111 can be entered. Master code If the PIN-code has been forgotten (5 tries every 3 hour with
21、mains connected), the only way to unlock the product again is by entering the 5 digit Master code. The Master code can be ordered at Bang enter the 5 digit Master code. How to order Master code The Master code is ordered by sending a request either via the Retail System or on the Master code formula
22、, if non of these options are available please contact Bang it must go back to Bang there is no need for testing the functionality of the theft protection. When the product is connected to mains, wait 20-30 sec. before operating. All addresses in ML has to be updated after disconnecting mains voltag
23、e. Service- and pin code, English 5.15 Exchange of software EEPROM on PCB3 When exchanging the EEPROM on PCB3, the data from the 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 3000 to test if there is sus
24、picion of a fault in the original EEPROM. The EEPROM will always adopt the data from the main micro-processor. Exchange of both micro-processor module PCB3 and software EEPROM on PCB3 If both the micro-processor and the EEPROM need to be exchanged it is necessary to have them pre-programmed from Ban
25、g & Olufsen with the correct serial number, otherwise they will not work. Please contact Bang & Olufsen. 5.16 Service- and pin code, English Important When the product is reconnected to mains, wait 20-30 sec. before operating. All adresses in ML has to be updated after disconnecting mains voltage. S
26、et and enter PIN code It is your own choice whether or not to activate the PIN code system. However, if you choose to activate the system, your BeoSound 3000 is protected against theft with a four-digit PIN code. The use of a PIN code means that if your BeoSound 3000 is disconnected from the mains f
27、or more than 15-30 minutes, the system can only be activated again by keying in your own personal PIN code. If the PIN code is not entered, the BeoSound 3000 automatically switches to standby after 3 minutes. If a wrong PIN code is entered, you get fi ve attempts to key in the code, after which the
28、system is switched off and cannot be switched on for 3 hours. Should you forget your PIN code, please contact a retailer who can assist you in receiving a Master code from Bang & Olufsen. You need the Master code to reactivate your BeoSound 3000. Activate the PIN code system The PIN code system is e
29、asily activated, and you choose the four-digit code yourself. Press l l STOP to key in a four-digit PIN code of your own choice. NEW PIN appears briefl y, and PIN _ _ _ _ appears. Key in a four-digit PIN code of your own choice. The PIN code is not displayed. Press PLAY to store the PIN code. CONFIR
30、M appears briefl y, and PIN _ _ _ _ appears. Re-enter your code. The PIN code is not displayed. Press PLAY to store. STORED appears, indicating that your PIN code is stored. Enter the PIN code If the PIN code system is activated and your BeoSound 3000 is disconnected from the mains for more than 15-
31、30 minutes, you are requested to key in the four-digit PIN code when the system is fi rst switched on. The cue PIN _ _ _ _ is displayed. Key in your personal PIN code. The PIN code is not displayed. When the four-digit code has been entered, the display returns to the relevant source e.g. RADIO 1. D
32、eactivate the PIN code system You can deactivate the PIN code system at any time. All you need is to enter your PIN code fi rst and then deactivate the system. Press l l STOP to key in the four-digit PIN code. PIN _ _ _ _ appears. Key in your personal four-digit PIN code. The PIN code is not display
33、ed. NEW PIN ? appears. Press m p to switch the display. PIN OFF appears. Press PLAY to deactivate the PIN code system. DELETED appears, indicating that the PIN code system is deactivated. Service- and pin code, English 5.17 If you have forgotten your PIN code If you have forgotten your PIN code, you
34、 must contact a retailer who then requests a fi ve-digit Master code from Bang & Olufsen. Once you have keyed in this code, your BeoSound 3000 is operational again and the PIN code system is deactivated. The cue PIN _ _ _ _ is displayed. Keep l (rewind) pressed down for 3 seconds to open for master
35、code input. Key in the fi ve-digit Master code. DELETED appears, indicating that the PIN code system is deactivated and the set is ready for use. Change your PIN code You can change your PIN code at any time. However, for security reasons it is only possible to change the PIN code fi ve times within
36、 a period of 3 hours. Press l l STOP to key in the four-digit PIN code. PIN _ _ _ _ appears. Key in your personal PIN code. The PIN code is not displayed. NEW PIN ? appears. Press PLAY to enter a new PIN code. PIN _ _ _ _ appears. Key in your new PIN code. The PIN code is not displayed. Press PLAY t
37、o store. CONFIRM appears briefl y, and PIN _ _ _ _ appears. Re-enter your code. The PIN code is not displayed. Press PLAY to store. STORED appears, indicating that your changed PIN code is stored. 5.18 Service- and pin code, English Dismantling, English 6.1 Dismantling Glass door - Open the glass do
38、ors. - Disconnect the main voltage. - Dismount the glass doors by pulling forward at the bottom fi rst and then at the top. Take care that the glass door does not scratch the display. Rear panel - Remove the seven screws A in the back cover. Pull out the back cover by wrenching the corners C of the
39、back cover to the side. Front covers - Dismount the two side front covers by pulling them carefully outwards at the top and bottom until a loud click is heard (snaplock). Service position PCB2 and PCB3 - Remove the fi ve screws B. - Lift the Power Supply and the Pre Amplifi er (PCB12 and PCB15) out
40、of the cabinet. - Remove the three screws holding the PCB2. Lift up the two PCBs (PCB2 and PCB3). PCB5 - Release the clamp arm and the clamp from the tab. - Unscrew the eight screws E holding the centre plate. The product is now in service position. To dismount PCB5 be aware of some details. - Disco
41、nnect 05P41, 42, 44, 45 and 46. - Unsolder Lamp A and Lamp B. (Watch out for the fl at cable). E E E E E E E E 7.1 Insulation test Insulation test Each set must be insulation tested after having been dismantled. Make the test when the set has been reassembled and is ready to be returned to the custo
42、mer. Flashovers must not occur during the testing procedure! Make the insulation test as follows: Short-circuit the two pins of the mains plug and connect them to one of the terminals of the insulation tester. Connect the other terminal of the insulation tester to the chassis pin of the headphone so
43、cket. NOTE! To avoid damaging the set it is essential that both terminals of the insulation tester have good contact. Slowly turn the voltage control of the insulation tester until a voltage of 2.5kV is obtained. Maintain that voltage for one second, then slowly turn it down again. Isolationsprfung
44、Nach der Zerlegung mu bei jedem Gert eine Isolationsprfung vorgenommen werden. Prfung vornehmen, wenn das Gert zusammengebaut und zur Auslieferung an den Kunden bereit ist. Whrend der Prfung drfen keine berschlge auftreten! Isolationsprfung folgendermaen vornehmen: Beide Stifte des Netzsteckers kurz
45、schlieen und mit einer der Klemmen des Isolationsprfers verbinden. Andere Klemme des Isolationsprfers am Masseanschlu der Kopfhrerbuchse anschlieen. ACHTUNG! Um Beschdigungen des Gerts zu vermeiden, mssen beide Klemmen des Isolationsprfers unbedingt einen einwandfreien Kontakt haben. Spannungseinste
46、llung des Isolationsprfers langsam auf eine Spannung von 2,5 kV erhhen. Diese Spannung eine Sekunde beibehalten, anschlieend langsam verringern. Test disolement Il convient de soumettre lappareil un test disolement aprs lavoir dmont. Ce test est effectu aprs avoir rassembl lappareil et avant de le r
47、emettre au client. Aucune tincelle ne doit se produire lors du test ! Procder au test disolement comme suit : Court-circuiter les deux broches de la fi che secteur et les raccorder lune des bornes du testeur disolement. Raccorder la seconde borne du testeur disolement la broche de masse de la fi che
48、 femelle du casque. ATTENTION ! Pour viter dendommager lappareil, il est important que les deux bornes du testeur disolement soient en parfait contact. Tourner lentement la commande de tension sur le testeur disolement jusqu arriver 2,5kV. Maintenir cette tension pendant une seconde, puis la diminuer lentement.
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