Herunterladen Diese Seite drucken
Technics RS-M233X Service
Vorschau ausblenden Andere Handbücher für RS-M233X:
Service
dbx/Dolby
DOLBY
NR
RS-M233X
RS-M24
MECHANISM
Specifications
Track system•
4-track
playback
Tape speed:
4.8cm/s
Wow and flutter:
0.048% (WRMS), *0.140/0 (DIN)
Frequency
response:
Metal
Croz tape;
Normal tape; 20
Dynamic
range:
110dB (at 1kHz) with
Max. input
level
improvement:
IOdB or more improved with dbx in
(at IkHz)
Signal-to-noise
ratio:
dbx in; 92dB
D0169C NR in; 75dB (CCIR)
Dolby B NR in; 67dB (CCIR)
NR out; 57dB
(Signal level = max. input level A
weighted,
Design and specifications
* The term dbx is a registered trademark
* *'Dolby' and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.
Technics
B • C NR-Equipped
Stereo
Cassette
in black
is also available
SERIES
2-channel
stereo
recording
and
tape;
20 —19,000Hz
Hz (DIN)
20
—18,000 Hz
(DIN)
—17,000 Hz
30— 16,000 Hz (DIN)
in
Croz type tape)
are subject to change without
Manual
Deck
in some
countries.
Fast
forward
and
rewind
time:
Inputs:
Outputs:
Bias frequency:
Heads:
Motor:
Power requirements:
Power consumption:
Dimensions:
Weight:
notice.
of dbx Inc.
Matsushita
ORDER
NO.
Cassette
RS-M233X
(Silver
kBlack
This
is the
Service
Manual
following
areas.
o.
For all European areas
except United Kingdom.
United
••••For
Asia,
Latin
Middle
East
areas.
Approx.
90 seconds
with
C-60
cassette
tape
MIC; sensitivity
0.25mV, applicable
microphone
impedance
400Q—10kQ
LINE; sensitivity
60mV, input
impedance
47kQ or more
LINE; output
level 400mV, output
impedance
1.5kQ or less
HEADPHONES;
output
level 80 mV
(at 8Q) applicable
headphone
impedance
8Q—600Q
80 kHz
2-head system
I-MX head for record/playback
I-double-gap
ferrite
head for erasure
I-motor
system
..AC;
220V, 50-60Hz
110 V1125 V1220V1240V,
50-60 Hz
Pre-set power voltage 240V
15W
[N]...llw
4.4 kg
Electric Trading Co., Ltd.
P.O. Box 288, Central Osaka Japan
83040229C8-12
Deck
Faceh
Face/
for
the
Kingdom.
America,
and
Africa
loading

Inhaltszusammenfassung für Technics RS-M233X

  • Seite 1 ORDER 83040229C8-12 Service Manual Cassette Deck RS-M233X dbx/Dolby B • C NR-Equipped Stereo Cassette Deck (Silver Faceh kBlack Face/ DOLBY This is the Service Manual following areas. For all European areas except United Kingdom. United Kingdom. ••••For Asia, Latin America,...
  • Seite 2 RS.M233X CONTENTS PAGE ITEM ITEM PAGE • Location of Controls and Components • Circuit Boards and Wiring • Disassembly Instructions Connection Diagram . 17 • Measurement and Adjustment Methods ..• Mechanical Parts Location (included • Block Diagram..Mechanical Parts List) •...
  • Seite 3 RS-M233X Main case Claw; BACK SIDE meter unit REC LED Slide volume circuit board Fig • 4 Fig. 5 IMain circuit board] 05) I Claw; Fig. 6 Procedure To remove — Remove —. Shown in fig. —. • 2 ornament screws ...(A)
  • Seite 4 RS.M233X Ref No. To remove —. Procedure Remove —. Shown in fig. —. • Reset Lever ..(M) Mechanism unit • 4 screws Headphones circuit board • One • Connector • Screw Slide volume circuit • As shown in fig. 4, push the claw in 1—10 the direction of arrow @, pull the board...
  • Seite 5 RS.M233X 3. Turn screw (B) shown in fig. 3 to find angles A and C (points where peak output Record/playback head levels for left and right channels are obtained). Then, locate angle B between angles A and C, i.e., and point where L-CH and R.CH outputs are balanced.
  • Seite 6 RS-M233X @ Playback gain Condition: Equipment: • Playback mode • Oscilloscope • Normal tape mode • Test tape...QZZCFM Test equipment connection is shown in fig. 2. Playback standard recording level portion on test tape (QZZCFM 315 Hz) and, using VTVM, measure the output level at test points [TP5 (L-CH), TP6 (R-CH)I.
  • Seite 7 RS.M233X RS.M233X Adjustment (A): Adjustment (B): Adjust the ATT so that the output level at LINE OUT becomes 0.38V BLOC +3dB (The input level at this condition is called the standard input level). When curve exceeds When curve falls below +3dB fiZäüiiiii +20B...
  • Seite 8 RS.M233X RS.M233X BLOCK DIAGRAM (L.CH only) R317 Connection 4.7K R319 Wlre $4-1 Easi 'bias' NOTES: Spectral —Sl-14 selector switch (shown in playback 'Osv Skewing Anti-Saturation position). Network 'osv filter Q303 S2-1 SS 2 Sl.2 • S2-1 Dolby C NR INIOUT switch (shown in OUT position).
  • Seite 9 RS.M233X SCHEMATIC DIAGRAM MAIN CIRCUIT 01, 2. 4, 7.8 013. ICS, 6 010, 11 IC201 IC202 0201—206 0207, 0209—21m 214 0218. 215 060' (Red) 011. 12 09, 10 SECTION 2SC2603(E.F) 1M5218L1 IMS220L1 tNE654N1 INE6S2N1 tlSS133T771 1M5218L1 IAN62911 2SC260xE.F) 2SC184SU 2SCM3(E.F) 2SA1 1S(ETF) ILN216RPJ...
  • Seite 10 011. 12 013, IM5218L1 2SDS92NCS 2SJ400 2SDW0,R) 2SK381D t2SD9651 HEADPHONES/ CM3Q t2SOS921 t2SK3811 PSJ401 METER LINE NOTES: • Sl.1—S1-14.. .Record/playback selector Switch (Shown in playback SS-I position). 8133 NOTES: .DolbY C NR INIOUT switch (shown in OUT position). • S2-1 HEADPHONES .DOlby B NR IN/OUT Switch (shown in OUT position).
  • Seite 11 RS.M233X RS.M233X CIRCUIT BOARDS AND WIRING CONNECTION DIAGRAM FL METER CIRCUIT BOARD EARTH METER PLATE-2 (to Main Case) O MAIN CIRCUITBOARD 0301 LINE OUT LINE IN •-0.33V 10.ov-052V 0303 HEADPHONES JACK R31i -639 VR301 CIRCUIT BOARD b 18 0131 0.6M 05--06 0303 PEAK...
  • Seite 12 RS.M233X RS.M233X RS.M233X RECORD/PLAYBACK S502: ROTARY SWITCH T501: AC POWER HEAD S14 : PLAYBACK S13: CUE/REVIEW (AC POWER VOLTAGE SELECTOR) TRANSFORMER Lug TERMINAL SWITCH SWITCH (to Mechanism Unit) AC POWER CORD 123456 MOTOR S501: POWER ONIOFF SWITCH 0.09V For United Kingdom. T501: AC POWER TRANSFORMER...
  • Seite 13 RS.M233X RS.M233X (REAR VIEW) MECHANICAL PARTS LOCATION (FRONT VIEW) M137 M 104 M106 M127 M142 M 03 M 73 M60 M59 M112 M 70 .M33 i"Y93 M114 M134 MIM 21.1%126 M129 M133 M 79 M65 ey M115 M118 M120 M 78 fM47 M119 ...134...
  • Seite 14 RS.M233X RS.M233X CABINET PARTS LOCATION • O...For all European areas Ret, NO. Part Part Name & Description except United Kingdom. XTN3 + 6B Tapping Screw @3x6 G 10 OTSM0088 Shield Plate n136* G 11 POWER SUPPLY 30 | OKMM0052 Main Case CIRCUIT BOARD...
  • Seite 15: Parts List

    RS.M233X ELECTRICAL PARTS LIST CAPACITORS NOTES: RESISTORS ..Carbon ECBA Ceramic ECEO Electrolytic ERD. ECGO Ceramic ECEON . Non polar electrolytic Metal-oxide ECKO Ceramic ECQS . Polystyrene . Metal-oxide REPLACEMENT PARTS LIST ECCO Ceramic ECSCJ Tantalum . Metal-ti\m Important safety notice ECFCJ .
  • Seite 16 RS-M233X CONNECTORS Removing contacts Push the pawl of a contact each hoie in the housing with a flat screwdriver and pull lead wire to remove contact. TERMINATIONS IC3, 4 ICI, 2, 7, 201 IC202 IC5, 6 Cat node A nooe 01—4, 7, 8, 15,...
  • Seite 17 • Mode de bande normale • Oscilloscope trer ces signaux sur Ia bande étalon d'entretien du modéle No. RS-M233X. • Bande étalon...QZZCFM Reproduire Ies signaux enregistrés limites indiquées par Ia courbe de r (Si Ia courbe est comprise dans Ies REMARQUES: Placer les interrupteurs et Ies contröles dans Ies positions Suivantes, sauf indication contraire.
  • Seite 18 (Le compensateur d'enregistrement est fixe.) Vumétre fluorescent Condition: Equipement: Brancher Ies appareils comme indiqué dans Ia Fig. 10. e cet appareil avec précision. • Mode d'enregistrement • Voltmete électronique Placer I'UNITE en mode pour bande normale, et introduire la bande étalon vierge normale (OZZCRA). •...
  • Seite 19 Vumötre fluorescent Condition. Equipement: O Réglage du temps de Condition: Equipement: • Mode d'enregistrement • VOItmét,-e électronique recouvrement å I'attaque • Mode d'enregistrement -,ale (QZZCRA). • Voltmétre électronique • Contröles de niveau • Atténuateur (circuit dbx) • Contröles de niveau de I'atténuateur.
  • Seite 20 315Hz, 12,5kHz, 8kHz, I kHz, 250Hz, 125Hz, und 63Hz messen und jede Ausgangsspannung mit Die in Schritt 6 aufgezeichne der Standardfrequenz 315Hz an der LINE OUT. RS-M233X. liegt, der im Frequenzgangdi Messungen an beiden Kanälen durchführen. benen Bereichs liegt, mit de Prüfen, 0b die gemessenen Werte innerhalb des in der Frequenzgang•Übersichtaufgeführten Bereichs liegen.
  • Seite 21 MeBgerät: Fluoreszenzmeter Bedingung : O Einsatz (Der Aufnahme-Entzerrer ist fest eingestellt.) • Aufnahme • Röhrenvoltmeter Justierung Den MeBaufbau zeigt Fig. 10. • Eingangsregler...MAX • NF.Generator (dbx Scha Gerät auf Betriebsart "Normalband" schalten, und Testband (QZZCRA) einlegen. • Abschwächer • Abgleichkontrolle An LINE IN ein Signal von IkHz, —24dB zuführen.
  • Seite 22 MeBgerät: Fluoreszenzmeter Bedingung: Einsatz Ausgleichszeit. MeBbedingung: MeBgeräte: • Aufnahme • Röhrenvoltmeter Justierung • Betriebsart Aufnahme • Röhrenvoltarmeter • NF-Generator • EingangsregIer...MAX • Eingangspegelregler. ..MAX (dbx Schaltung) • Dämpfungeglied • Abschwächer • Abgleichkontrolle • Abgleichkontrolle • AF-OszilIator •alten. -Mitte (Zentrum) Mitte (Zentrum) •...
  • Seite 23 ...For Asia, Latin PARTS COMPARISON TABLE: America, Middle Please revise the original parts list in the Service Manual (RS-M233X) to conform to East Africa the changes shown herein. areas. If new part numbers are shown, be sure to use them when ordering parts.