Technics RS-B40 Serviceanleitung
Inhaltsverzeichnis
Service
dbx/Dolby B-c NR-Equipped
DOLBY
NR
RS.8R
MECHANISM
Specifications
Track system:
4-track 2-channel
and playback
Tape speed:
4.8cm/s
Wow
and
flutter:
0.045% (WRMS),
Frequency
Metal tape;
response:
croz tape;
Normal tape; 20N17,000Hz
110dB(at 1kHz)with db3(in
Dynamic
range:
Max. input
level
10dB or more improved
improvement:
(at 1kHz)
Signal-to-noise
dbx in; 92dB (A weighted)
ratio:
Dolby C NR in; 75dB (CCIR)
D0169B NR in; 67dB (CCIR)
NR out; 57dB (A weighted)
(Signal level = max. input level,
type tape)
Fast
forward
and
Approx. 85 seconds with C-60
rewind
time:
cassette
Design and specifications are subject to change without notice.
*The term dbx is a registered trademark of dbx Inc.
* *'Dolby' and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.
Technics
Stereo
Cassette
SERIES
stereo recording
(DIN)
20rv19,000 Hz
30N18,OOOHz (DIN)
±3dB
30N17,ooo Hz (DIN)
40AJ16,OOOHz ±3dB
Hz (DIN)
Hz ±3dB
with dbx in
tape
Manual
Deck
Inputs:
Outputs:
Bias frequency:
Heads:
Motor:
Power
requirements:
Power
consumption:
Dimensions:
croa
Weight:
ORDER
NO. HAD84032733C2
Cassette
RS-B40
Silver
Black
This
is the Service
for the following
D
...For
all European
areas except
Kingdom.
...For United Kingdom.
MIC; sensitivity
0.25mV, applicable
microphone
impedance
400QNIOkQ
LINE; sensitivity
70mV, input
impedance
38kQ or more
LINE; output
level 400mV, output
impedance
4.5kQ or less
HEADPHONES;
output
(8Q) applicable
headphone
impedance
8Qru600Q
80kHz
2-head system
I-MX head for record/playback
I-double-gap ferrite head for erasure
One for capstan
drive
One
for
reel
table
drive
One
for
mechanical
D ......AC; 220V, 50-60Hz
......AC;
240v/220v/125v/110v,
50-60 Hz
15W
4.5kg
Matsushita
Electric Trading Co., Ltd.
PO. Box 288. Central Osaka Japan
Deck
Face
Face
Manual
areas.
United
level 80mV
drive
Inhaltsverzeichnis
Verwandte Anleitungen für Technics RS-B40
Inhaltszusammenfassung für Technics RS-B40
- Seite 1 ORDER NO. HAD84032733C2 Service Manual Cassette Deck dbx/Dolby B-c NR-Equipped RS-B40 Stereo Cassette Deck Silver Face DOLBY Black Face This is the Service Manual for the following areas..For all European areas except United Kingdom..For United Kingdom. RS.8R MECHANISM...
- Seite 2 RS.B40 CONTENTS ITEM PAGE ITEM PAGE • Location of Controls and Components • Electrical Parts List • Disassembly Instructions • Circuit Boardsand Wiring ConnectionDiagram • Measurement and Adjustment Methods • MechanicalParts Location (includedParts List) • Microcomputer Terminal Function and Waveform •...
- Seite 3 RS.B40 RS-B40 • DISASSEMBLY INSTRUCTIONS FFIREW MOTOR DRIVE MOTOR CAPSTAN The head azimuth can be MOTOR adjusted by removing the Fig • 2 cassette Fig. I Fig • 9 Fig. 10 Shown Remove — To remove —. Ref. Procedure fig. —...
- Seite 4 RS-B40 Reassembling the Mechanism Unit MECHANISM VTVM 1. For repair, measurement or adjustment with UNIT Oscilloscope Record/ VTVM Extension mechanism removed from the unit be sure to ground the playback head Cord L •ch lower base plate of the mechanism.
- Seite 5 RS.B40 Standard value: 0.28V (0.40±0.05V: at LINE OUT jackl Adjustment 1. If the measured value is not within standard the adjust VR5 (BCH) or VR6 (R-CH) (See fig. I). 2. After adjustment, check "Playback frequency response" again. @ Erase current Condition: Equipment: •...
- Seite 6 RS.B40 2) Repeat Steps 5 and 6 for 2) Repeat steps 5 and 6 for confirmation (Proceed confirmation (Proceed steps 7, 8 and 9 if the curve steps 7, 8 and 9 if the curve within charted specifications as shown fig. within charted specifications...
- Seite 7 RS-B4( LINE OUT 4. Adjustment at "OdB". A. Adjust the ATT so that the output level at LINE OUT becomes 0.4V. (The input level at this condition is called the standard input level). LINE IN Record m ode VT VM Oscilloscope AF oscillator B.
-
Seite 8: Terminal Function
RS.B40 MICROCOMPUTER TERMINAL FUNCTION AND WAVEFORM (ICIO: MN1400RMJ) (BOTTOM VIEW) SNSI Terminal Symbol Name Function/operation • Remains in H in the FF, REW, or STOP mode. Muting for all • Remains in L in the REC PAUSE, REC PLAY, or PLAY mode. cö9 amplifiers •Remains... - Seite 9 RS.B40 RS.B40 BLOCI Terminal Terminal Function/operation Symbol Name Function/operation Symbol Name LINE • "High" level pulse in each mode in operation PLAY STOP. • Remains after input of the mechanism selection command (PLAY, PAUSE, STOP, etc.) and until mode detection leaf Switch is JACK closed.
-
Seite 10: Block Diagram
RS.B40 RS.B40 BLOCK DIAGRAM LINE selection command METER DOLBY NRAMP ection leaf Switch JACK 0507 0501 0513 40 msec. IC201 BALANCE NPUT LEVEL 0503 CONTROL CONTROL FL METER DRIVE PLAY LINE VR20i Q 505 METER 0201 Weigh ti nq — P, B, EQ 0512 E mohasis... - Seite 11 RS-B40 SCHEMATIC DIAGRAM 0801, 802 011, 13 IC3. 0509. 05". D17. 19 2SC331 IQ M5218L 2SC3311Q 0501. AN6291 2SD1199R 2SA1115EF 2SC331to M5218L 2SJ40CD UMAIN CIRCUIT B OARD 2SK381D ISS133 2SD1450R MS218L SWIu SWITCHING INPUT LEVEL SWITCHING Dolby NR AMP ISS133...
- Seite 12 035, 039. 40 317. 19 033. 34 2SJ40CD 041. 2SD1450R 047. 022. 23. 26. 30" 32 ISS133 2SJ40CD 2SD1450R M5218L SWITCHING 2SK381D SWITCHING M5218L 2SA1115EF aptl 2SC33110 2SC331 IQ 2SA111SEF 34-,36, 38, 39 SWITCHING SWITCHING UN4111 LINE/HEAOPHONES REC AMP SWITCHING REC AMP MOTE ONIOFF...
- Seite 13 PARTS COMPARISON TABLE: Please revise the original parts list in the Service Manual RS-B40 (of the black type model for mark areas) to conform to the changes shown herein. If new part numbers are shown, be sure to use them when ordering parts.
- Seite 14 Reproducir Ia cinta de prueba de respuesta de frecuencia (QZZCFM). para el modelo No. RS-B40. Medir eI nivel de salida en 315 Hz, 12,5kHz, 8kHz, 4kHz, 1kHz, 250Hz, 125Hz y 63Hz y comparar cada nivel de salida con...
- Seite 15 6. Reproducir las seöales grabadas en eI paso 6, y comprobar si Ia curva de respuesta de frecuencia estå dentro de los Ajuste a "0dB". limites mostrados en el gråfico de respuesta de frecuencia total para Ias cintas normales (Fig. 11). A.
- Seite 16 Service-Anieitung für das Modell der Standardfrequenz 315Hz an der LINE OUT. Messungen an beiden Kanälen durchführen. Justi RS-B40. Prüfen, 0b die gemessenen Werte innerhalb des in der Frequenzgang-Ubersicht aufgeführten Bereichs liegen. Wenl (Siehe Fig. 9). Wenn nicht anders vorgeschieben,...
- Seite 17 O Dolby-Schaltung Bedingung: MeBgerät: Justierung (A): • Aufnahme • Röhrenvoltmeter Wenn die Kurve den vorgeschriebenen Gesamtfrequenzgangbereich (Fig. 11) überschreitet, wie in Fig. 12 gezeigt. • Dolby-Schalter • NF-Generator 1) DenVotmagnetisierungsstrom durchAbgleichen vonVR7(linkerKanal) undVR8(rechterKanal) erhöhen. (S.Fig.I) ...INIOUT (AN/AUS) • Abschwächer 2) Die Schritte 5 und 6 zur Überprüfung wiederholen. (Wenn die Kurve dabei innerhalb des vorgeschriebenen Bereichs •...
- Seite 18 315Hz, 12.5kHz, 8kHz, 4kHz, 1 kHz, 250Hz, 125 Hz, et 63Hz et comparer chaque niveau de 3) Si Ia courbe dépa d'entretien du modéle RS-B40. sortie avec celui de la fréquence standard de 315Hz sur Ia borne LINE OUT. phases 5 et 6.
- Seite 19 Réglage (A): O Circuit de réduction de Equi pement: Condition: Lorsque Ia courbe dépasse les spécifications du tableau de réponse de fréquence globate (Fig. I I), comme indiqué dans bruit Dolby • Mode d'enregistrement • Voltmétre électronique la Fig. 12. •...
- Seite 20 RS-B40 * The part No. of transistors, IC and diodes mentioned in the schematic diagram stand for production part No. Regarding the part No. with O mark, the production part No. are different from the replacement part No. Therefore, when placing an order for replacement part, please use the part No.
-
Seite 21: Parts List
RS.B40 ELECTRICAL PARTS LIST NOTES: RESISTORS CAPACITORS ERD.. Carbon ECBA Ceramic Metal-oxide ECGO ..Ceramic Areas ERS. . Metal-oxide ECKO .Ceramic . Metal-film ECCO „ ..Ceramic For all Eulopean areas except United Kingdom. ERX... Metal-film ECFO Ceramic *IBl For United Kingdom. -
Seite 22: Circuit Board
METER CIRCUIT BOARD CI RC UI T BO DS A N D WI G CON TION D IA MAIN CIRCUIT BOARD TP502 part Nam &Descripti part NO. Ret.NO. COILS L 1 . 2 OLOX 03A3 KWA Bi as Tr ap coi Multiplex Fillter Skewin Network... - Seite 23 RS.B40 TERMINATIONS mark areas. OFL METER CIRCUIT BOARD ,D201 * For mark areas. ICI, 6, 7, 11, 502 IC201, 202 IC3, 4, 10 0202 .—.RtOS 03231302928212623242322 15140 II to 98 07, 8. 20. 24, 26, 27. 29-v32. 35O8, T2: AC POWER TRANSFORMER 41,V49.
- Seite 24 RS.B40 RS.B40 MECHANICAL PARTS LOCATION *PROFILE NOTES: APPLY AK-152 all Eurc COATING. except Unit B..For United COUNTER BELT TO TAPE COUNTER X-PROFILE APPLY AK-152 COATING. x_pROFlLE APPLY AK.152 S401 COATING. *PROFILE APPLY AK-152 COATING. S402 APPLY AERO GREASE BELT REST S403 X-PROFILE...
- Seite 25 RS.B40 RS.B40 CABINET PARTS LOCATION REPLACEMENT PARTS LIST NOTES: Important safety notice Areas Components identified by A mark have special For all European areas characteristics important for safety. *IDI For all Eulopean areas except United Kingdom. except United Kingdom. : N2 Whenreplacing anyof thesecomponents, use * [Bl For UnitedKingdom.