Technics RSM 205 Service Manual

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ORDER NO. ARD81030032C810

Servuce Manual

Cassette Deck

RS-M205

[NVEAH .1
Metal Tape Compatiblé'StereoCasset-te-Deck Silver Face
with Soft-Touch Controls and Rewind (Black Face)
Auto-Play Convenience ,, , ,

This is the Service Manual for the

following areas.
DD DOLBY SYSTEM [E --------- For all European areas

except United Kingdom.

For Asia, Latin America,
Middle East and Airica
areas.

For Australia.

4/"
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I. -
RS-M24 MECHANISM SERIES ,
Specifications
Track system [tetrack 2Achannel stereo recording and playback Outputs LINE; output level 400 mV. output impedance
Tape speed /i 8cmr5 (1»7"8ips) 1.5k82 or less. load impedance 22kQ over
." Wow and flutter O 05% (WRMS) HEADPHONES. output level 80 mV. load impede
, ance 8S2
' F a ' M t l 717.0 CH
requency response e a tape. $8715 OgO H: (DlN) Rec/pb connection 5P DlN type,
00 'ape 20716OOOl-lz input senstriVity O 25 mV, impedance 5 6k£2
i 30 71500Ol-lz (DlN) output level 400 mV. impedance 15kg
Normal tape. 20 715.000 Hz Bias trequeocv 80ka
307 13000 Hz (DlN) Motor Electrical DC governor motor
SignalloenOise ratio DolbyNR lll. 66 dB (above 5kHz) Heads Zrhead system;
. Dolby NR out. 56dB 1 MX head for record/playback
(Signal level ,, max recording level. 00 type 17double7gap territe head iOt erasure
tape) Power requirements lE AC, 110/220 V, 50760 Hz
Fast forward and WuAC:110/125/220/240V,50-60l-lz
rewmd time. Approx. 90 seconds With 060 cassette tape E AC. 240V
Inputs MlC: senSitiVity O 25mV. input impedance 60M Power CONSUIWDUOH 10W
applicable microphone impedance 400S2710k22 Dimensions 43,0cm(W) >< 12 2cmiH) X 20.6cm(D)
l LlNE: senSitIVIty 60 n'iV. input impedance 47m Weight, 3 9kg
F Specnications are subiect to change Without notice

* 'Dolby and the doublerD symbol are trademarks of Dolby Laboratories

I I ' h . Matsushita Electric Trading Co., Ltd.
ec nlcs PO Box 288. Central Osaka Japan

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m

CONTENTS
es
5' PAGE
LOCATION OF CONTROLS AND COMPONENTS ........................................................ 1
DISASSEMBLY INSTRUCTIONS .............................................................................. 2
MEASUREMENT AND ADJUSTMENT METHODS """"""""""""""""""""""""""""""" 3
ELECTRICAL PARTS LOCATION .............................................................................. 6
SCHEMATIC DIAGRAM ........................................................................................ 7
CIRCUIT BOARDS AND WlRING CONNECTION DIAGRAM ------------------------------------------ 8
MECHANICAL PARTS LOCATION ............................................................................ 9
CABINET PARTS LOCATION ................................................................................... 9
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LOCATION OF CONTROLS AND COMPONENTS

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®

(D Power switch [power(push on)]
® Cassette holder
@ Tape counter and Reset button (tape counter)
@ Recording indication lamp (rec)
© VU meters (leit-level-rlght)
(a) Eiect button (A eiect)
(3 Record button (0 rec-.) - K,
® Rewind/Review button (44 rew/rev)
® Fast lorward/Cue button (D) ll/cue)
Play button (b play-El)
@ Stop button (I stop)
@ Pause button (ll pause)
® Headhones jack (phones)
@ Tape selector [tape select (Metal-CrOz-Normam
® Dolby noise-reduction switch [Dolby NR (in-outn
Input selector [input select (line-mic (DIN))]
@ Input level controls [input level (tell-right
@ Microphone jacks [mic (lett-right)]
@ Record/Playback connectlon socket (REC/PLAY)
@ Voltage selector (VOLTAGE SELECTOR)
* For all European areas except United Kingdom
n For Asia, Latin America, Middle East and Alrica areas
@ Llne output cord (LINE OUT)
@ Line input cord (LINE IN)