Technics RSM 226 Service Manual

Page 1

ORDER NO.AR08206016108-11

Service Manual

Cassette Deck

Soft-Touch Cassette 0 RS-MZ 2 6

Deck with Dolby B-C NR (Elf/g: .5232)

Thimfwiefihznual for the E
DU DOLBV 3": NR _ lTttjowing areas.
~~~~~~~ For all European areas

l5,
lE except United Kingdom,
l For nited Kingdom

Please use this service manual for the RS-M226. (Discard the
service manual prepared for the order No. ARD82050142C8-11.)

RS-M24 MECHANISM SERIES

Specifications
Track system: 4-track 2~channel stereo recording and playback Inputs: MIC, sensitivity 025 mV, applicable microphone
T d' 4 8 / impedance/lOOQi IQkQ
ape spee ' cm s LINE: senSitiVity 60 mV, input impedance more
Wow and flutter: 0.048% (WRMS), :0140/0 (DIN) than 47kg
Outputs: LINE; output level 400 mV, output impedance
Frequency response: Metal tape; 20-18000 Hz less than 2.3kQ
30*17000 HZ (DIN) HEADPHONES; output level 80mV (8 $2)
CrOz tape; 20-18,000Hz applicable headphone impedance 852* 6009
30-16000 Hz (DIN) Bias frequency: 80 kHz
Normal tape; 20 W 17,000Hz Motor: Electrical DC governor motor
30 715 000 Hz (DlN) Heads: Zrhead system
' 1 MX head for rec/playback
Signalto-noise ratio: Dolby C NR in; 75 dB (CCIR) 1 double-gap ferrite head tor erasure
Dolby B NR in; 67 dB (cch) Power requirements: lE AC 220V, 50-60Hz
NR out, 57 dB (for all European areas except United Kingdom.)
(si rial level =max in ut level A wei hted Cr02 AC 240 V SOHZ
g ' p g (only for United Kingdom)
type tape) Power consumption: 12 W
Fast forward and Dimensions: 43,0cm(W)><10,9cm(H)>< 23.3 cm(D)
rewind time: Approx. 90 seconds with 0-60 cassette tape Weight 4.0 kg

Specifications are subject to change without notice.
* Dolby and the double-D symbol are trademarks of Dolby Laboratories.

' I 'e hnics Matsushita Electric Trading Co., Ltd.
C PO. Box 288, Central Osaka Japan

Page 2

RS-M226

CONTENTS

ITEM PAGE ITEM PAGE
LOCATION OF CONTROLS BLOCK DIAGRAM" 9
AND COMPONENTS ------------------------------- 2 SCHEMATIC DIAGRAM 13
DISASSEMBLY INSTRUCTIONS --------------- 2 CIRCUIT BOARDS AND
MEASURMENT AND WIRING CONNECTION DIAGRAM ~~~~~~~~~~~~~~~~ 15
ADJUSTMENT METHODS ----- 3 MECHANICAL PARTS LOCATION ., 18
ELECTRICAL PARTS LOCATION 8 CABINET PARTS LOCATION --------- 22

LOCATION OF CONTROLS AND COMPONENTS

r-Neadphones Jack (phones) f-Tape comer (mpe coumu)
Pow" Swilcn [power (pulh onn f-v-Retoiding Inmmor nee:
(-Eiecl Bullon (ejem) r'filllpul Seiem aunon

IInpm selm I 1 mm - mICII

c355,... "om, r-n. muorescem Imn Meler

Iii.

,-
~-Inpul Level Canlrols
f T ? ImpullevelIL <3 an
Brape Selector
[I-pe :elacl (Novm-IIDrOzoMIIIII]

I
I
I
; Dolby Noise neaucuen seiecx
Rewind/ Counm mm Buuon ; 5'4 (HWY 13?!

I

K

I

I

I

Ful Forwam/Cue annon
{ft/cue 1 »)

Review Bunun (counler met)

new/few « )1 unmann- mu

[mi=(lelurigm)!

BMW .4qu HoducIion Switch
[Dolby an 11mm- in»

---'-~->- --" (-Ac Paw" mug.
Seiecl Switch

my aumm Record Butler!

I
Ipiay-zwn Inc-Eton rig u U

Slop aunon p..." Simon 1;
man (In Ina-m uni
Linc 0|qu Janka ILINE OUT (LIRII

¥Linempntuck; [LINE mum]

DISASSEMBLY INSTRUCTIONS

(A) (a) (M)

.,_.y.;

* The head azimuth '
can be adjusted by removing

the cassette lid.
Fig. 1

Power
supply

ID) GifCUiI Flat (C) (N)
board cable

[fiéé'BFdT/Bliai/Facii /
Iconnection /

Mire/4W} :,
IL / A 853;

L K
\in /
L-_._\Ef:77777777777777J Fig. 5