Technics RS-M215 - Circuit Board and Wiring Connection Diagram

NOTES:
¢ $1-1—S1-4 ...... Record/Playback select switch (shown in playback position).
© $2-1—S2-2 ...... Input select switch (shown in LINE IN position).
* $3-1—S3-2 ...... Dolby IN/OUT select switch (shown in OUT position).
¢ $4-1—S4-5 ...... Tape select switch (shown in normal position).
AC power voltage select switch.
* For all European areas except United Kingdom.
Power ON/OFF switch (shown in OFF position).
Cue/Review muting switch (shown in off position).
0 SB. uiccetieosessnees Playback muting switch (shown in off position).
-Playback gain adjustment VR.
Input level controls.
© VR5,6 oo... Recording gain adjustment VR.
* VR101, 102 .Bias current adjustment VR.
e
VR201 0... FL meter adjustment VR (for OdB indication)
© VR202 ............ FL meter adjustment VR (for —20dB indication).
« Connection points (A) and (B)...... For erase current adjustment.
« Resistance are in ohms (Q), 1/4 watt unless specified otherwise.
K= 1,0002, M = 1,000KQ.
¢ Capacity are in microfarads («F) unless specified otherwise.
P = Pico-farads.
* The mark (¥) shows test point. e.g. ¥ = Test point 1.
* (==>) this arrow indicates the flow of the playback signal.
© (mmm ) this arrow indicates the flow of the recording signal.
* Ail voltage vatues shown in circuitry are under no signal condition and record mode
with volume control at minimum position.
For measurement, use VTVM.
¢ Important safety notice
Components identified by A mark have special characteristics important for safety.
When replacing any of these components, use only manufacturer's specified parts.
EQUIVALENT CIRCUIT
1C201 AN6870
i
@
Se
(TOP VIEW) 3
TRANSISTORS
|
ws
(SIDE
VIEW)
ws
(=
s
bax)
°
dia
8
c
E
na
aise!
cw
088)
Ic1, 2
DOLBY B-TYPE
CIRCUIT
INTEGRATED
W112 13141
SPECIFICATIONS — * Input level controls--- MAX.
Playback S/N ratio
Test tape --- QZZCFM
Greater than 45dB
(without NAB filter)
Overall distortion
Test tape
Less than 4%
*+»QZZCRA for Normal
+ QZZCRX for CrOz
++ QZZCRZ for Metal
Overall S/N ratio Greater than 43 dB
Test tape --- QZZCRA
NOTES: RESISTORS
ERD --- Carbon
ERG --- Metal-oxide
ERS --- Metal-oxide
ERO --- Metai-film
ERX --- Metal-film
ERQ---
ERC.
ERF..--
Solid
Cement
Fuse type metallic
CAPACITORS
ECBA ------ Ceramic
ECGO --.-- Ceramic
ECKO---.- Ceramic
ECC .--- Ceramic
ECF Ceramic
Polyester fiim
ECQE..-.--
Polyester
film
REPLACEMENT PARTS LIST
Important safety notice
ECQF
«++.
Polypropylene
ECEL
«-.--
Electrolytic
N.-... Non polar electrolytic
enka y Polystyrene
+ Tantalum
Tantalum
Components
identified
by
A
mark
have
special
characteristics
important
for
safety.
When
replacing
any
of
these
components,
use
only
manufacturer's
specified
parts.
ERD25FJ681
R201 ‘ ERD25TJ153
R202. @ ' ERD25FJ472
For ali European areas
type.
R203, 204 | ERD25TJ683
R205, 206 | ERD25TJ473
R207, 208, 209
| ERD25TJ105
R211, 212 | ERD25FJ181
R213 ERD25FJ103
R214 _ERD25FJ681
RESISTORS
ERD25FJ100
R3,4 | ERD25FJ562
R5,6 ERD25TJ104
R7,8 ERD25FJ101
R9, 10 ERD25TJ104
R11,12 | ERD25TJ823
R13,14 ERD25FJ101
R15,16 | ERD25TJ184
R17,18 | ERD25FJ392
R19,20 | ERD25FJ272
R21,22 | ERD25FJ562
R23,24 | ERD25FJ332
R25,26 | ERD25TJ473
R27,28 | ERD25FJ392
R29,30 | ERD25FJ102
R31,32 | ERD25TJ474
R33, 34 | ERD25TJ473
R35,36 | ERD25FJ332
R37, 38 | ERD25TJ105
R39,40 | ERD25TJ274
R41,42 | ERD25TJ184
R43,44 | ERD25FJ181
R45,46 | ERD25FJ272
R47,48 | ERD25FJ102
R49,50 | ERD25TJ683
R51,52 | ERD25TJ224
R53,54 | ERD25FJ822
R55,56 ‘| ERD25FJ681
R57,58 | ERD25FJ272
R59,60 | ERD25FJ102
R61,62 | ERD25FJ471
R63,64 | ERD25TJ223
R65,66 | ERD25FJ102
R67,68 — ERD25FJ3R3
R69,70 | ERD25TJ333
R71,72 | ERD25TJ273
R73,74 | ERD25TJ124
R75,76 | ERD25FJ151
R77 ERG2ANJ560
R78 ERDSOFJ270
R79,80 | ERG12ANJ820
R81, 82 ERD25FJ102
R83, 84 ERD25FJ222
R85 ERD25FJ102
R90 ERD25TJ563
R93 ERD25FJ102
R94 ERD25TJ153
R95 ERD251J223
R101 ; ERD25FJ1RO
R102 ERD25FJ471
R103 ERD25FJ561
R104 ERD25FJ562
R105 ERD25FJ100
R106 ERD25FJ562
R107 ERD25FJ100
R108 ERDSOFJ101
R109 ERD25FJ101
R110 ERG2ANJ101
R112 ERD25FJ821
except United Kingdom.
* For —20dB indication (FL
METER) nonadjustable
QSSE203
$2,3 QES1544
$4 QES1490
S5 © A] QSR1409H
$6 A’ QSWI117
: QSB0251i
TL GA! QLPDS2EKC
A | QLPA61EKC
* For United Kingdom.
XBAQ0007
A
Ref. No. | Part No.
SWITCHES
VARIABLE i ECEAIAS101
RESISTORS | (67 ECEA2AS3R3
vR1,2 | EVNK4Aa00B24 |C69,70 | ECKD1H391KB
VR3,4 | QVH3AA067854 |C71 ECKD1H472MD
VR5,6 EVNK4AA00B54 For ~20dB indication (FL
VR101, 102 | EVNK4AA00B15, METER) adjustable type.
VR201 —/ EVNK4AAQ0B24 |C101,102 | ECCDIM101KD
VR202 EVNK4AA00B14 {C103 ECQP1183JZ
%For —20dB indication (FL | C104 ECFDD153KXY
METER) adjustable type. C105 ECEA1ES101
C106 ECFDD822KVY
SAPAGITORS §=— 10107, 108 | ECQV05104JZ
C1,2 ECEA25M4R7R 1C109,110 | ECEAICS471
C3,4 ECFOD102KVY |C111, 112
C5,6 ECFDD102KVY A | ECEAICS102
C7,8 | ECQM1H183KZ |C201,202 | ECEA2AS010
C9, 10 ECEAIHS100 | C203 ECFOD473KXY
11,12 | ECEAQUS471 —- C205, 206] ECKD1H223ZF
C13,14 | ECEA1ES220
C15,16 | ECKD2H121KBL | TRANSISTORS
C17,18 | ECFDDIOZKWY |Q1,2 2SB745T
C19,20 | ECEAIHNO10 = 03,4 2SD661T
€21,22 | ECFDD392KVY 05, 6,7,8,9, 10
C23,24 | ECQM1H472J2 | 2506368
C25,26 ECEALHS100 «013 2SB641R
(27,28 | ECQM1H273/z 015 2SD636S
29,30 | ECEASOMR33R | Q101 2SD592NCR
€31,32 | ECQVvO5104s2 + Q102 | 25C1846-R
C33,34 - ECEA1HS100 ‘| Q103 | 25A885-0
C35,36 | ECFDD473KXY
37,38 | ECQM1H562J2 Se iieas
39,40 | ECEA1HS100
C41, 42, 43, 44 MAI61
C45,46 | ECEA2ASO19 ~—-| 9102 RVDIN4748
C47,48 | ECEAIHS100 —_| 0103, 104, 105, 106
C49,50 | ECQM1H333JZ A|SM112
51,52 | ECFDDg22Kvy | 201,202 | MA161
C53,54 | ECFDD273Kxy_ | 9203 MA1047LF
(55,56 ECFDD333KXY | wwreGRaTED
(57,58 | ECEA1HNO10 CIRCUITS
C59,60 — : ECEA2ASO10
C61 | ECEALAS331 i : ce
C62 ECEAIASIOZ | coy Aiueda
ECKD1H2232F
For ail European areas except United Kingdom.
TRANSFORMER
For all European areas except United Kingdom.
Part Name & Description
Slide Switch
(Record/Playback Selector)
Lever Switch
(Input Selector and Dolby IN/OUT)
Lever Switch (Tape Selector)
Rotary Switch (AC Power Selector)
Push Switch (Power ON/OFF)
Leaf Switch
(Cue/Review and Playback Muting)
AC Power Transformer
”
COILS
L1,2 QLQX0343K ‘Bias Trap Coit
13,4 ! SLM1Z19 : MPX Filter Coil
L5,6 "QLQX0332K Peaking Coil
L101 , QLBO198K : Bias Oscillation Coil
JACKS
Jl | QUAO249C “Headphones Jack
12,3 QJA0257H Microphone Jack
J4 QJS1954H Record/Playback Socket
FUSES
Fuse (T 400mA)