Bang & Olufsen BEOCENTER 2000 Service Manual Download Page 26 | Manualshive

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11-1

SERVICETIPS
Wiring of transformer

Wow frequencies

wh

B

800 24 23

Frequencies

6.08 Hz

4.25

Hz

1. 77Hz

1.43 Hz

1.13 Hz

bl

Source

of

Failure

Flywheel

Belt

[dler Wheel

Take

up

wheel

Thrust roller

Bang&Oiufsen

b

wh

bl

Pos.

No.

18155

18056

18120

18077

18115

9-2

Bang&Oiufsen

Other Data

Power supply

110-130-220-240 volts

•

Power frequency

50Hz

Power consumption

18-135 watts

Dimensions W

x

H

x

D

73.5

x

12.5

x

38 cm

Weight

11.2 kg

"'

Subject to change without notice

•

•

•

•

•

•

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...
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25
26

Summary of Contents for BEOCENTER 2000

Page 1: ......

Page 2: ...n in right channel and replay position is shown in left channel Mechanical switches are shown in neutral position When replacing components with this symbol use the same type and the same value for ohms and watts The new components is to be mounted in the same way as the replaced Because of the large number of internal connections in the set the wire connections have been gathered into bundles in ...

Page 3: ...l y I 1 IY Jl I 1 IT 1 I L I I I I I I I I I I FM IF t r t O F 11 __________ 8002418 3 AM SECTION C16 J zzJ L6 aa l1 12V vi B l_ 11 b r 5 4V Bang Oiufsen 8002417 2 PI I r15 t J fJ I L 1 I I Yao i cu_ I I 11 0 A l lftl o I 11 4 OZ l2 C4 STEREO DECODER PC 1161C IC2 03 5 V J fL I 2V 0 I F 02 r E 02 I o 02 e e e e ...

Page 4: ...117 0 1 7 J OUTPUT AM RIGHT CHANNEL OUTPUT AMP LEFT CHANNEL OUT czo 0 29 0 c 207 O l i L 7R101 7R105 I 7C101 7C107 7F101 I 7JCI01 0 A I IN J J I I J B 01 H 01 ff 8002420 k I B0050SS 9 f ll_ I MIC PREAMP P4 7 P4 8 P 4 l J l AJ Y e y I CC cr eA is u tZtzz Ccc z LEFT t t C I CtZI jc_Zt r IUK 0 rere r r Sr t t2c t t 2 l 1 3 0 c 01 A DJ I 0 4 C B K L 0 N M E 0 p E 5 Q G T R H u HEADPH lNES ...

Page 5: ...4223 I I 1 AUTO STOP 01 L 1852 AuSE L I y u u I L_ ____ dd IC 201 NE 6469 C2 OOL9Y NR RIGHT 1C101 02 NE 6469 LEFT ee 80042221111 02 1 K N I Bang Oiufsen c 9 o c r IS DOLBY NR Fo I REC SW 31 32 33 34 1 4 7 10 13 16 19 22 25 28 PLAY B REC lr ...

Page 6: ... a I OFF r AFC Sl MONO r S TEREO I wh bl y or wh gr I F HCtKl TAPE or v y 1 7 _ y grey ______ 5 grey B A tlQ it c _till 1 a Ti l a K l r 3 3 TR n 10 3 ClOG B 114 R 10 1 v T8 RI J5 I fi 121 cc 8_1_ 2 T S2_1 0 UT g 4 2 C2 30P R215 2 C rRJ eCl 2 a a l a L 1 l 5 B m 6 rs iJI IS jJ __b3 eS ln l lc 1_4 b f lii5T T g 1 _t _ lg A e e e e Bang Oiufsen 1 5 DIAGRAM4 c SI R C iJ Q 02 02 I 19V 8005056 10 TRI 0...

Page 7: ...awings are seen from copperfoil side 2 3 4 3 0 a C35 1 47nT FRONT END TUNE R AGC c tSn j t V ir lt a Clj_ Ll 22 1 g c M ex BPI a c nB RI 1R C 1 E C6CJ N 0 47JJ J Go l IF a 47 Rll 3 Zln r OO FC J p TPS 12 2 Cll 22n 3 I V R 16 l c 41C10 S oOT J22n TUN VOLT C1 1h lli _ rJ T c IC1 Qa II IIL zzn rJl 1 L 1s RZI u re r IJJ I 4 _ l li U 9 8 VJ 1Q Si 1C46l 7 T4 p l 2 0 0 Sl N o c 1 1 5JPa 9ucrc5 R47 r o4wa...

Page 8: ...C3_ C RG t C1 KJI q _ 4 o j m R231 5 t 04 ffiBJRs EU R 10fJ 2 0g Ji co l _br f JhS2 9_ c Ra Qi Rl l l c JF f vc H GCJluTJe l 2 Ju f a B to tif v r m c a V l 470 t M p CYJI N Wh j si 6 S2 S2t l l l o 71 J L v M oc u a E J 10 t ila C11 or o o I n bl _ 9 l N _ C201 N 220 b 2 I u _ 2 w L R B B c20 rJ r l 3 ti l 5I PE 33p fs Q Rll1 I b 3 Q e 1 R a_l o _ F 4 P5 ll w 9 T r W J 1 C B A Phono Motor Control...

Page 9: ...9C 12TR103 203 8320108 27 2SC458 12TR104 204 20 8C5488 12TR105 205 8320385 27 2SA836 20 8C5608 12TR106 206 8320108 27 2SC 458 20 8C5488 121C 101 201 8340136 119 NE6468 119 NE6458 131C 1 8340258 126 L81416 131C 2 17TR1 8320295 17 2SC1317 20 8C337 25 171C 1 8340259 127 AN 6250 17PE1 8340260 128 ON 1102 I 1 1 10 Bang Oiufsen Tape Amplifier 8004221 PC12 T1 fT1 0 n OJ N I I R3 JK 0 R1 123 f C114 Sn o L...

Page 10: ...0ohms 5 l 8W R44 R45 R25 5010075 33kohms 5 1 8W Cl 420044 7 33001JF 50V C3 C2 420044 7 33001JF 50V C4 3 2 4000049 15pF 2 5 e 8020350 468kHz Parallel trap 8020347 468kHz IF 8020348 468 kHz IF 8030015 468kHz filter 4100128 330pF 5 63V 4340011 12pF 4000061 5 6 pF 0 25pF 63V 4011025 3 3nF 10 8020343 M Wosc 5010065 100ohms 5 1 8W 5010665 1 2 Moluns 5 1 SW 5010046 12kohms 5 1 8W 5010065 100ohms 5 1 8W 5...

Page 11: ...00426 11J f 50V R207 5010141 27 kohms S 1 SW R234 501044S 22ohms 5 1 SW C6 4200424 0 471J f 50V C35 413017S 47nF IO 63V R20S 50100S8 470 ohms 5 1 SW R240 5010040 1kohms 5 1 SW C7 4030015 47nF 20 80 16V C45 4200464 0 331JF 35V R209 5010083 270kohrns S 1 8W CS 4010060 22nF 20 SO 40V C46 4100073 470pF 5 63V C9 4010060 22nF 20 SO 40V C47 4130186 0 221J f 10 63V 4003125 33pF 2 63V C10 4010060 22nF 20 8...

Page 12: ...18 4200431 lO lf 16V C6 4010067 1 5nF 10 63V C219 4130178 47nF l0 63V C7 4102091 4 7nF 5 160V C220 4130179 l lf 10 63V CS 4200436 47 iF 16V C221 4200464 0 33 lf 16V C9 4100145 2 2nF 5 160V C222 4010067 1 5nF l0 63V C201 4010062 330 pF 10 lOOV C223 4130172 10nF 20 63V C202 4200431 lO lf 16V C224 4010065 2 7nF 10 63V C203 4010027 1nF 10 lOOV C225 4010067 1 5nF 10 63V C204 4200431 lO lf 16V C226 4010...

Page 13: ...voltage switch 18023 2724060 Cord washer 18092 2853086 Ann EJECT 3172088 Insulation 1802 4 2013201 Screw2 9x6 5 18093 2034058 ScrewM2x4 18026 2810129 Spring with cord 18094 3031062 Connecting armREC 1802 7 7530097 Solder tag 18095 2810116 Spring l 07M odul 8002422 PC output amplifier 0702 2013204 Screw2 9x13 18028 2015095 Screw2 9x6 5 18096 2810127 Spring 0701 2013202 Screw2 9x9 5 18029 2775766 Bu...

Page 14: ...Bang Oiufsen 18100 18101 I _ 18158 4 4 18151 18152 ...

Page 15: ...kup MMC 20S replacement 1925 2039008 ScrewM3x6 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 19M1 19P7 2775781 2039027 3110028 2039008 2039027 2039008 2775780 2530405 2810090 2815007 2815012 8400098 7210115 7500114 Button ON ScrewM3x6 black Chassis ScrewM3x6 ScrewM3x6 black ScrewM3x6 Button 45 Bracket Spring Spring I Spring Motor with pulley and Socket housing 5 4 pol Contact pin 1501 150...

Page 16: ...lete 1536 2816162 Slider 2006 2013208 Screw 2 9x9 5 2028 2042030 Screw 1507 2700024 Gear wheel 1537 2853059 Arm 2007 3112268 Chassis 2029 2039008 ScrewM3x6 1508 2361048 Locking pin 1538 3164387 Cover 2008 2013109 Screw 2 9x7 9 2030 2775767 Button ON 1509 2819145 Spring 1539 2380011 NutM3 2009 3190080 Dial pointer 2775768 Button TAPE 1510 2819155 Spring 1540 3170185 Insulation 2010 2724061 Cord pul...

Page 17: ...2TP5 Set the dial and the sweep generator at 97 MHz Connect the oscilloscope via an RC probe to 2TP4 Adjust 2L4 and 2L5 to max and a symmetrical S curve in 2TP4 Connect a signal generator to the aerial input and adjust to 97 MHz Set the dial at 97 MHz Adjut with 2R16 until muting sets in at appr X 2 flV Tune in to a mono station Disconnect 2IC2 and 16Dl Connect a frequency counter to 2TP2 Adjust 2...

Page 18: ...annel separation AM IF Connect the stereo decoder to the aerial input Connect a wattmeter or an AC voltmeter to the AF output Adjust with 2R5 4 to max channel separation better than 30 dB Set the receiver at e g 1 600 kHz Adjust the sweep generator to 468 kHz and connect it to 3TP1 Connect an oscilloscope to 3TP2 Adjust 3L5and 3L6 to max and symmetrical IF curve 5 2 Parallel series trap Connect a ...

Page 19: ...1 measured with an AF voltmeter is between 5 5 and 6 5 dB lower at Fe than at CrOz Less resistance will give more bias more resistance will give less Check CrOz and Fe recording current 6 1 ELECTRICAL ADJUSTMENTS TAPE RECORDER SECTION Height Azimuth Speed Playback level VU meter Bang Oiufsen The references apply to the RH channel the bracketed references apply to the LH channel Make adjustments in...

Page 20: ... GB TS 1 Ann18129 Arm 18089 Ann18162 All slide faces Ann18091 Ann18092 AmJ 18134 Arm 18135 Tapehead bridge 18112 Ann18082 Point of rotation an chassis Ann18084 Shaft for arm 18131 Shaft for trust roller arm Shafts for takeup reels 18077 18078 3984007 Shell Tellus Shell Vitrea Bang Oiufsen e MELHANICAL ADJUSTMENTS Normal forward drive I e I I e e 6 4 c By bending the flap B it is ensured that the i...

Page 21: ...e plus two LP records of standard weights on the turntable motor The motor must then clear all three transport screws E see points B The turntable must also be parallel with the chassis deck and when the two LP records are removed from the turntable the distances C and D should be approx equal Adjust with the screws A o s 6 5 Rewinding Fast forward 0 1 _ E Bang Oiufsen B c By bending the flap B or...

Page 22: ...roll assembly ensures clearance between C and B when activating the button It likewise ensures that the pressure roll assembly and thus the ressure roll prober is lifted off the capstan shaft when the buttons and Pause are activated The need for relubrication is negligible but the following directions should be followed for overhauls and when replacing major components Arm 18127 3984022 Arm 18128 ...

Page 23: ...ck up ann balance Pick up ann parallelism Antiskating Put a record on the turntable Position the pick up arm above a run off groove Adjust screw A until the distance from the stylus to the record is 5 mms This adjustment must be made with a counterbalance weight mounted O H Turn the counter balance weight until pick up arm is in balance Hold the counter balance weight in this position and zero the...

Page 24: ...ndicated 17 cm on below diagram Adjust eccentric Bin such a way that the pick up will set down within the section indicated 30 cm when 33 is activated 1 148 25 L 146 86 84 0 0 0 c 17cm xlcm When the motor switch is OFF the armature of the mechanical relay in its mid position the clearance between the C and D sections of the switch should be 0 5 1 mm This adjustment is made by bending the D section...

Page 25: ... range Channel separation 1000Hz 400 10 000Hz Channel difference Effective tip mass Compliance Sensitivity mV cm sec Output 5cm lateral Speeds Wow and flutter DIN Wow and flutter WRMS Rumble weighted Rumble unweighted Compact cassette Tapehead Noise reduction Tape switch Wow and flutter Speed deviation Fast forward and rewind C 60 Frequency range ferro chrom Signal to noise ratio chrom Dolby NR Ch...

Page 26: ...ce of Failure Flywheel Belt dler Wheel Take up wheel Thrust roller Bang Oiufsen r 1 1 h b wh bl I I I Pos No 18155 18056 18120 18077 18115 9 2 Bang Oiufsen I Other Data Power supply 110 130 220 240 volts Power frequency 50Hz Power consumption 18 135 watts Dimensions W xH x D 73 5 x 12 5 x 38 cm Weight 11 2 kg Subject to change without notice I ...

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