Technics RSM 206 Service Manual

Page 1

ORDER NO. ARD82040138A8704

Service Manual

Cassette Deck

SottrTouch, Metal Compatible Cassette Deck RS-M206

on- (Black Face)

Silver Face
This is the SerVIce Manual for the-Ti
t followtng areas
i --------- For all European areas
I ~--For ASla, Latin America,

l Middle East and Africa
t areas.
1 For Australia.

~ Please use this manual together with the service manual for model No.
RS-M216 (original) order No. ARD8204013308-11.

' For schematic diagrams, circuit boards, wiring connection diagram and
parts lists, refer to the ones in this Service Manual.
For other information, refer to both this Service Manual and the original
Service Manual.

RS-M24 MECHANISM SERIES

Specifications
Track Systeii 4 tract 2 channel stereo ECO'Gl'lg and plawacw i'iouts MIC SenSItiwty x? 25riiV applicable microphone
Motor E ectr ca goentor riioor imIJGC-BIICe 40033 10W
Tape 359% 4 8cm 5 LINE. senstivity 60 mV, input impedance more
Wow ano tiutter 005% ' 14O lDlNi 1401!
Fredi encv $570? Metal u p , 7, \H ' Outputs LINE output level 400mV output impedance
4 ' 3 D f L take or less
00 d1 DNI HEADPHONES output level 80mV (so)
00 taae ' applicable headphone impedance 89760052
15 OOHti iJlNl Bias treqtencv 80 kHz
Normal rape gig 15 0 Heads 27head system
41"» 1/ DlN, 1 MX head tor Veco'd playback
\ - . , r if ~ 2* A ,7 , , ,w 1 double ap territe head tor erasure
Signal to none atid Jolt), NR in poet) 1: Mr 1) Power requirements LD1 --~ACg220V, 50760 Hz
97" NR 1 MB , , E -~AC 110125'220 240v. 50760Hz
\SIgial level nax input level A weigtted 00 tit AC 240V 50*60HZ
HJE 1.3th Power consumption 10W
Fast toward git: Dimeris one 43 cntlil r 10 it cmttt) » 23 j cmtD)
rewind t we Approx 9 seeds Wltt C 60 cassette tape Waghl 4 0kg

Spezitications are subtect to change Without rotice
- .zolby and the doublet) symbol are trademarks ct Dolby Laooratories

I I IeChniCS Malsushita Electric Trading Co., Ltd.
PO Box 288, Central Osaka Japan

ELECTRICAL PARTS LOCATION
(DIFFERENCE)

E17 - POWER SUPPLY
E33 9 7C|RCU|T EQARD

areas.

El

......... For Australia,

--------- For all European areas.
--------- For Asia, Latin America,
Middle East and Africa

CABINET PARTS LOCATION

_\
REC LED
CIRCUIT

,1 BOARD

RS-M216

(DIFFERENCE)

7%....

niRcIIir
O

RS-M206

LEVEL METER

Page 2

SCH EMATIC DIAGRAM

at, 2
asnsutRiSl nr
zscztnts tct
laminae) usatut

PquACK admit: an»

E MAIN sECrloN

slot 517

1
41 W

MlC lN

liltchl

JA UNE lN it CNI

"0 item ..
FLAYBACK
HEAD lRCHi 0
[OWYMZZZ]
MIC IN
reason I
tine lN
J54R-CNI
m
23 {353"
ms: HEAD
IDWVQlZEZl
L pits osc
on
zsntzzsrlnr
2somn
tzsomi

NOTES:
- Si-tislrld Record/Playback select switch (shown in playback positionl
- 52-1752 4 Input select switch (shown In LINE IN positionl
- 334.532.. . Dolby lN/OUT select switch lshown in OUT position).
- 54-1795 . Tape select switch lstiowri in normal postttonl

(6). Normal, @ Cro,.@ Metal)
- $5 F'ower ONIOFF switch (shown in OFF position).
- 56 [N] AC power voltage select switch

. For Asia, Latin America. Middle East and Arrtca areas
. sr Playback muting switch lshown in oil pOSItlon)
. 58 Fast Wind muting switch (shown in oil positionl
- vni, 2 Playbacx gain adiustment VFl
- vast: lnput level controls
- VHS 6 Recording gain adiustment VR
- Vth, to ...... Blas current adiustment VR.
- Connection points (Al and (El. .. For erase current adjustment

ice. I ascmts
ileum

DOLIV rut

m, t as I
noes-that in asset .sl ur
ascmltonsl
luctmul lzsctusnl lzscmsoi

FEE m

"5 rnimi
m

flu
in 19! Will

a. mini my

It?

Stall

l7! tsrttw

pa..- in a. in... trrv Iii5

MW

tint/mt an ' '

CUM-Luau
aunt iai

r (DI-a) . inv

REC INDICATOR
sEcrloN

a)

at:

ZSDKWOFJI si

Zscaflzloififil
ZSCIBOWI

M

moron loxuozsfl

as
iittmnvl
(Hill)

Resistance are in ohms 19). 1/4 watt unless specilied otherwlse.

K = ,0009, M = tpooxg,

- (my 1 indicates printed resistor

A printed resistor is printed on the printed circuit board to be part or printed
patterns lor circuit conirguration

Capacity are in microlarads thl unless spectlted otherwtse,

P : Picarlarads

The mark ivl shows test point. e g. v: Test point i.

1*)"5 arrow indicates the llow ol the playback signal

ll . II this arrow indicates the How ol the recording Signal

Important salely notice

Components identitied byA mark have special characteristics important lor
salety When replacing any or these components. use only manulactuiers
Spectfled parts

or. a
zsmulul or
age It

icz
usmt

MEYER HEADPHONES AIIP

m
hr mi

J6 LINE our
in

HEADPHONES SECTION

I. InlquV

1/2 to:

1 Lil by t

.7 iaim my

m LEVEL METER sEcrloN
'_.

rm

EQUIVALENT CIRCUIT

I01 M5219L
[; Amp

ICZ M5218L
Lu bl Lgl bl in
l+l|NPUT N O

Amp

Ll in bi
, Tl+llNPUT

OUTPUT UTPUT +Vcc
l»llNPU vcc Hi PUT

El aaaaaaaaa For all European areas.

[El .. -- For Asia, Latin America,

Middle East and Africa
areas.

'11.. .. For Australia.

or, a

SPECIFICATIONS Input level controls-MAX

0H

a c a
raw 7, etoav -toav --loav
|:Nonn.iiasc rervr easv -iouv
Metsiingc iv +3tv raw.

or:

Greater than 45dB
(Without NAB litter)

Playback S/N ratio
Test tape QZZCFM

Overall distortion

Tli
av 99v ' nv
av Aesv avi

Trial

Test tape
' QZZCRA for Normal

Less than 4%

av av, any

i in mi

item
I [77 10

in... my

nzcuureo pcwzn strum

w I! n
i. mini
13V

. it n

run
an

[Ev

mu m

nr-rtr

QZZCRX tor Cr02
QZZCRZ for Metal

C l E
7 V uiv,ssv
say 00/ say

. Overall S/N ratio
Test tape QZZCRA

Greater than 43 dB

i

at: D" 015 - IE [70' "'
filutlofiislur ascrustrlal 29mins) sutuwzr Eurbvlrl a.l
:srtmnu Incs!!! lzsuasol lsmtzl
(255 m m POWER SUPPLY SECTION
MAlflauu
littrtizmutl

- All voltage values shown in circuitry are under no signal condition

Unless otherwise specified. voltage measurement conditions are that tape
travels is at STOP, tape mode at NORMAL, and Dolby NR switch at OFF
REC Voltage at record mode.

PLAY . Voltage at playback mode.

REC/PLAY . ....Voltage at record/playback mode

Normal ,,,Voltage at Normal tape mode.
Cro,. ,,,Voltage at Cro, tape mode.
Metal .,,VOItage at Metal tape mode.

Described in the schematic diagram are two types or numbers; the supply
parts number and production parts number tor transistors and diodes
One type ol number is used lor SUDDly parts number and production parts
number when they are toenttalt

3.9. or
250636IR.S)-Produclion parts number
{ or 25020215
[25015550] -Supply parts number
n7
sonzr production parts number
I ISM1121-Supply parts number

- The supply pans number is described llone In the replacement parts list.

- This schematic diagram may be modified at any time with
the development at new technology.