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Technics RS-B18 Serviceanleitung
  1. Anleitungen
  2. Marken
  3. Technics Anleitungen
  4. Kassettendecks
  5. RS-B18
  6. Serviceanleitung
Technics RS-B18 Serviceanleitung

Technics RS-B18 Serviceanleitung

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Service
RS-BIO
MECHANISM
SPECIFICATIONS
Deck system:
Track system:
Heads:
RECIPLAY;
Erasing;
Motors:
Recording
system:
Bias frequency:
Erasing
system:
Tape speed:
Frequency
response:
Metal;
croz;
Normal;
Dynamic
range (with dbx in):
SIN (signal level = max. recording
dbx in;
bolbyC NRin;
Design and specifications
*The term dbx is a registered
* *'Dolby'
and the double-D symbol are trademarks of Dolby Laboratories
Technics
dbx/Dolby B C NR-Equipped
Stereo
Cassette
SERIES
Stereo
cassette
deck
4-track,
2-channel
MX
head
Double-gap
ferrite head
I motor
system
AC bias
80 kHz
AC bias
4.8cm/sec.
20
30
(DIN)
40
±3dB
20
(DIN)
±3dB
20
30
(DIN)
40 Hz—
14,000
Hz ±3dB
110dB (1 kHz)
level, Cr02 type tape)
92dB (A weighted)
75dB (CCIR)
are subject
trademark
Manual
Deck
Dolby B NR in;
NR out;
Wow
and
flutter:
Max. input level improvement
(with dbx in):
Fast
forward
and
rewind
Input sensitivity
and impedance:
LINE;
Output voltage and impedance:
LINE;
HEADPHONES;
Power consumption:
Power supply:
Dimensions
(WxHxD):
Weight:
to change
without
notice.
of dbx Inc.
Matsushita
ORDER
NO.
HAD84052784C4
Cassette
RS-B18
Color
(K)...Black
(S)...Silver
Color
Area
[D]
For all European
areas
except
United Kingdom.
[B]. ..... For United
Kingdom.
[N]......For
Asia,
Latin
America,
Middle
East
and
Africa
areas.
. For
Australia.
[Fl. ..... For Asian PX.
For European
67dB
(CCIR)
57 dB (A weighted)
0.07% (WRMS),
(DIN)
IOdB
(1 kHz)
time:
Approx.
110 seconds
C-60 cassette
tape
0.25mV/400Q—10kQ
70mV/47kQ
400mV/1.8kQ
80mV/8Q
Ilw
[D]...AC; 220V, 50-60 Hz
.AC; 240/1 IOV, 50-60 Hz
Pre-set power voltage
240 v
..AC;
110/125/ 220/240V,
50-60 Hz Pre-set
power
voltage 240V
430x108x220mm
3.2 kg
Licensing Corporation.
Electric Trading Co., Ltd.
P.O. Box 288, Central Osaka Japan
Deck
Type
Type
PX.
with
loading

Verwandte Anleitungen für Technics RS-B18

Inhaltszusammenfassung für Technics RS-B18

  • Seite 1 ORDER HAD84052784C4 Service Manual Cassette Deck RS-B18 dbx/Dolby B C NR-Equipped Stereo Cassette Deck Color (K)...Black Type (S)...Silver Type Color Area For all European areas except United Kingdom. [B]..For United Kingdom. [N]..For Asia, Latin America, Middle East Africa areas.
  • Seite 2 RS-B18 • CONTENTS ITEM PAGE ITEM PAGE • Location of Controls and Components • Circuit Boards and Wiring Connection • Disassembly Instructions Diagram • Measurement and Adjustment Methods • Mechanical Parts Location •Block Diagram..(included Parts List) • Schematic Diagram •...
  • Seite 3 RS.B18 RS.B18 • 1 screw ..DISASSEMBLY INSTRUCTIONS ....(K) • 1 screw ....• As shown in fig. 3, remove the record/ playback changing wire in the direction Main circuit board* of arrow (3) . • When measuring and adjusting, set the main P.C.B.

  • Seite 4: Before Measuring

    RS-B18 Condition: Equipment: Playback gain 2. Playback the 8kHz signal from the test tape (QZZCFM). Record/ playback • Playback mode • VTVM Adjust screw (B) in fig. 3 for maximum output L-CH and R-CH levels. heaC • Oscilloscope • Normal tape mode...
  • Seite 5 RS.B18 RS.B18 Condition: Equipment: Adjustment (A): Fluorescent meter Adjustment (B): • VTVM •AF oscillator • Record mode When curve falls below When the curve exceeds • Input level controls...MAX • ATT • Oscilloscope overall specified fre- overall specified frequency • Resistor (600Q) response chart...
  • Seite 6 BLOCK DIAGRAM Line/ Selector 0301 S8-l S2-l S2-3 LINE line line 0511 0501 0507 0303 Input level 0513 Control I——— Balance Q 503 Control JACK SWITCHING 0305 0505 Dolby P 8/0N pre - Weighting 0512 Emphasis 0307 RECORD/ play De - Emphass PLAYBACK HEAD S 1-8...
  • Seite 7 -818 SCHEMATIC DIAGRAM DMAIN CIRCUITSECTION 01.2 2SA641 018, SWITCHING 2SD636 TEA0665 MUTING S2-l S2-3 DOLBY Sl-2 S 1-4 0301. 2SJ103GF CIRCUIT SECTION C413 SWITCHIB LINE 0507 L ch 0501m c 335 RS 23 2SD636 Ploybock 0303. SWITCHING 2SK246GF qoln SWITCHIN asos CS 05 0.68...
  • Seite 8 NOTES: Record/ playback switch (shown in playback position). • S2-1&S2-4 Input select Switch (shown in line in position). Dolby-B IN/OUT switch (shown in OUT position). • S4-1, S4•2 . Croa tape select switch (shown in OFF position). Normal tape select Switch (shown in OFF position).

  • Seite 9: Parts List

    • ELECTRICAL PARTS LIST CONNECTORS NOTES: RESISTORS CAPACITORS • CIRCUIT BOARDS WIRING CONNECTION DIAGF ECELJ . Electrolytic ERD._ ..Carbon ECBA ...Ceramic (5 Pin) ECEüN Non polar electrolytic ECGO ..Ceramic . Metal-oxide Ecos . Polystyrene (3 Pin) REPLACEMENT PARTS LIST (6 Pin) .
  • Seite 10 RS-B18 CONNECTION DIAGRAM CIRCUIT BOARD _For Asia. Latin America. Middle East Africa areas. POWER TRANSFORMER CIRCUIT BOARD SIC); AC POWER Osos TAC POWER T RANSFORMER VOLTAGE SELECTOR . T': AC POWER CIRCUIT BOARD TRANSFORMER SIC); AC POWER VOLTAGE AC POWER...

  • Seite 11: Parts Location

    RS.B18 • MECHANICAL PARTS LOCATION (Rear View) (Front View) APPLY MOLYCOAT APPLY MOLYCOAT EM.20L APPLY ÄOCOL PASTE 864: APPLY AK.1S2 APPLY AERO APPLY GREASE MOLYCOAT LYCOAT APPLY EM.20L APPLY EM.20L ROCOL APPLY MOLYCOAT To tape •jif EW20L countor (G37) jib: APPLY ROCOL PASTE...
  • Seite 12 RS.B18 RS-B18 • CABINET PARTS LOCATION REPLACEMENT PARTS LIST Important safety notice Components identified mark have special characteristics important for safety. When replacing any of these components, only manufacturer's specified parts, Ref. part Part Name & Description Ref, NO. Part Name & Description...
  • Seite 13 Reproducir la cinta de prueba de respuesta de frecuencia (QZZCFM). para el modelo No. RS-B18. Medir el nivel de salida en 315Hz, 12,5kHz, 8kHz, 4kHz, 1kHz, 250Hz, 125Hz y 63 Hz y comparar cada nivel de salida con 315Hz de frecuencia normal, en LINE OUT.
  • Seite 14 5. Ajustar el oscilador de AF para generarsefialesde 1kHz,50Hz, 100Hz,200Hz,500Hz,4kHz, 8kHzy 10kHzy Brancher les appareils comme indiqué dans la Fig. 16. grabar, estas senales en la cinta de prueba. En el modo de pausa durante la grabaciån, aplicar 1kHz (—24dB)a LINE IN. 6.
  • Seite 15 Frequenzgang-Testband QZZCFM wiedergeben. mit der Service-Anieitung für das Modell Ausgangsspannung bei 315Hz, 12,5kHz, 8kHz, 1kHz, 250Hz, 125Hz und 63Hz messen und jede Ausgangs- RS-B18. spannung mit der Standardfrequenz 315Hz an der LINE OUT vergleichen. Messungen an beiden Kanälen durchführen. Anm..
  • Seite 16 Mit dem NF-Oszillator Signale von 50Hz, 100Hz, 200 Hz, 500Hz, 1kHz, 4kHz, 8kHz und 10kHz zuführen, Den MeBaufbau zeigt Fig. 16. diese Signale auf das Testband aufzeichnen. In Betriebsart "Aufnahme-Pause" 1 kHz (—24dB) signal an den NF-Eingang geben. Die in Schritt 5 aufgezeichneten Signale wiedergeben und überprüfen,...
  • Seite 17 Lire la portion de réponse en fréquence de la bande étalon (QZZCFM). d'entretien du modéle No. RS-B18. Mesurer les niveaux de sortie å 315Hz, 12,5kHz, 8kHz, 4kHz, 1kHz, 250Hz, 125Hz, et 63Hz et comparer chaque niveau de sortie avec celui de la fréquence standard de 315Hz sur la borne LINE OUT.
  • Seite 18 5. Régler l'oscillateur AF pour produire des signaux de 50Hz, 100Hz, 200Hz, 500Hz, 1 kHz, 4kHz, 8kHz et 10kHz La conexiön del equipo de prueba se muestra en la Fig. 16. et enregistrer ces signaux sur la bande étalon. Appliqure un signal de 1kHz (—24dB)å la borne LINE IN, alors que l'unite est en mode de pause d'enregistre- 6.