Technics RS-M7 Service Manual

7
RS
-
MV
7
;
.
‘
NOTE:
RESISTORS
CAPACITORS
ERD --- Carbon ECGO) -.--- Ceramic
ERG --- Metal-oxide ECKQ ----. Ceramic
SCHEMATIC
DIAGRAM
ERO.
Matafim
ECC)
Garam
ERX --- Metal-film ECFQO ----- Ceramic
ERQ -.- Fuse type metallic ECQM ...--- Polyster
>)
OOO
OOOO
OO
ooo
ee
se
5
ee
eee
ERC
---
Solid
ECQE..-----
Polyster
ERF ---Cement ECQF ------- Polypropylene
Anu
aa
.
ECEQ
-...-
Electrolytic
PLAY REC S31 Q3 Qi Q405 LINE OUT(L) ECE (C)N.--- Non polar electrolytic
eel
Y
oO
Sia
Sia.
Re
470
2SC945P
=
2SC945P
CSCI383S
Raa
IK
Si-is
©)
EQS...
Polystyrene
: ECSO ----- Tantalum
; C
. rs i. S15 5 7 E 9 Q) C3 i
_ MOON OOO HOdHOL ae
O
; R: 10
Sa
bl
Sov
33
[ie
RESISTORS
C41,42
|
|
ECFWD104KXY
PLAYBACK
Sof
Bae
uapemagt
R1,2
ERD25TJ100
C43,
44
ECEA1HS100
HOH
=
.
—
SAV
5.
75V15.
3V
R5,6
ERD25TJ681
C45,
46
ECFTD473MXY
Zz
1C1
QVITA7I122APB
Bis
ya
¥
R9,
10
ERD25TJ101
C47,
48
ECKD1H471KB
330P
2.04V
0.59V
OV
OV
O.6V
—
arp
R13,
14
ERD25TJ184
C49,
50
ECEA1HS100
:
R17,
18
ERD25TJ331
C51,
52
ECEA25Z4R7
aaa;
oy
L
R19,
20
ERD25TJ222
C53,
54
ECEA50Z3R3
Re
R23,
24
ERD25TJ394
C55,
56
ECEASOZR1
Ds01
OASILFE
lie?
R25,26
|
|
ERD25TI103
|
C57,58
|
|
ECEAIHSO10
R27
ERD25TJ271
C59,
60
ECEA1HS100
R31, 32 ERD25TJ562
2K(B)
| (61,62) | ECKD1H102MD
R37, 38 ERD25TJ473 C63, 64 ECFTD472KVY
R41, 42, 43, 44 C65, 66 ECQS1122KZ
ERD25TJ102 C69, 70 ECFTD473KXY
C71,72 | | ECEA5OZR22
R45 ERG12ANJ470 1073 74) | ECFWD104KXY
R47,48 | | ERD25TJ105 = 1 675. 76 | | ECFTD683KXY
R49, 50) | ERD25TI181_— | ¢77,78 |_| ECFTD473KXY
K of gC 3 R35
est AU
1 Ce |
9a —— OK
ne 820P Rar 47K
5
1000P
te g IN (L)
rt)
R53,54
|
ERD25TJ332_—
|
¢79,80
|
|
ECFTDIS3KVY
R63,64
|
|
ERD25TJ393
|
cgs,86
| |
ECEAIHS100
R75,76
|
|
ERD25TJ561
oe
R77,78|
|
ERD25TJ272
|
og7
gg
|
|
ecea1asa70
Sit
$1.2
Sr4 Siz
is
R93,94
|
|
ERD25TJ102
|
¢93.94
|
|
ECCDIH331K
:
ESSs
Qs
Qe
HEADPHONES
aan
C301
ECEA1ES101
5
MOUODGQOO
ebb
decal
di
|
cnbperinny
(C02
ECFTD473KXY
°
oe
C303 ECFWD104KXY
9
R210
6
33
|
R103,
104
C304
ECQS1332KZ
RECORD/
SS.
Io
ERD25TJ123
C305,
306
ue
Sto
R301
ERD25T/122
ECODIHIOIK
6
oe
R302
ERG12ANJ121
tO}
f
THT
C401
|
Al
ECEAIES102
2
R303
ERD25TJ820
|
cago
403
R304
ERQ12ANJ181
1.97V
0.58V
0V
OV
0.58V
6.3V
1L7V
A|
ECEA1ES471
R305
ERD251J220
|
c404
ECEAICS102
R309,
310
Dees
ERD257J223
|
405,
406
VJ
sae
R401
ERD25TJ222
ECEA1ES470
R402
ERG12ANJ330
C407
ECEA1HS100
OAMILF 2K(B)
J1 MIC (R)
C408 ECEA25Z4R7
R404 ERG12ANJ101
R407 ERD25TJ102 C409 ECEA1ES101
C410 ECKD1H1032F
VARIABLE
RESISTORS TRANSISTORS
C64
0.0047
Co
1000P
VR3, 4 EVLS3AA00B24 | Q1,2, 3,4
Bagh 39 vR5,6 | | EVLS3AAQ0B54 | | 2sc1684
Jz LINE IN(R) Sir7 Q4o2 Qsoa ! VR7, 8 EWKN3AF21A15 | Q7, 8, 301
b Rens 100 ® ® CSMEP Hoos -2SADGAR | VR501, 502 2SC1318
14.6V EVLS3AA00B23 | Q401 28C1383
|
0402
2SC1684
CAPACITORS Q403 2SA564
C1,2 ECEA16Z10 Q405, 406
|
C3,
4
ECCD1H221K
|
28C1383
C5,6 ECKDIHIO2ZF | a
|
C7
ECEA1HS100
ODES
}
c9,10
|
|
ECEAICS330
==
c11,12 | | ECEAIAS221 [0301 | | SEL103R
EE a: | RR i go I Onaga Uhl. I A NMR NVETER 6 ll lI C13 ECEA1ES101 | 0401, 402
|
C15,16
|
|
ECFTD822KVY
|
4|
SM102
c17,18| | ECKD1H821KB |D403, 404,405
C19,20 | | ECEA1HS100 | | 1824737
D501, 502
C21,22 | | ECFTD103KVY | OA91
C23,24 | | ECFTD473MXY
:
AC
POWER
INTEGRATED
:
ERASE
50Hz
(WW)
~~
AT40L
ERASE
&.
se
C27,28
|)
|ECEAIASZ21
Jini
5
|
|
vita71228PB
ed
°
For
All
European
areas
|
C29
ECEAICS331
1103.4
NE646B
except
United
Kingdom
A
pa
pacts
|
AC
POWER
AC
POWER
C35,
36
|
|
QCQG05273JZ
i
C37,
38
ECEA1HS100
:
:
:
:
:
C39,
40
ECEA50ZR33
:
For
Asia,
Latin
America,
Middl
Fa
Australie
,
Middle
East
and
Africa
areas.
|
TERMINATIONS
(BOTTOM
VIEW)
hia
SPECIFICATIONS
~
«*
Input
level
control---
MAX
!
i
.
$1-1~$1-18---.
Record/playback
select
switch
(shown
in
playback
position).
:
;
2.
$2-1~S$2-6----
cone
bias
select
switch.
--CrQ2,
2---Fe-Cr,
3---
Normal.
|
|
3.S3-1,$3-2
ssn
paiy
IN/OUT
select
switch
(shown
in
OUT
position).
Playback
S/N
ratio
More
than
45dB
|
33
4.
S4-1~S4-4
00.
inp
select
switch.
Tast
tape
-*-
QZZCFM
--MIC,
2---
LINE
IN.
7c
os
Yo
Ee
ae
ON/OFF
switch.
:
;
|
=
30
=
6.
SG
eee
Motor,
muting
switch.
Overall
distortion
(2)
:
eaten
Fitttet
tee
eee
AC
power
voltage
select
switch.
Test
tape
;
»VR4...--
eee
Playback
gain
adjustment
VR.
0
E
9.
VRS,
VR6-----
ee
Recording
gain
sdtiecht
VR.
a6:6
RA
f
N
|
Less
than
3
70
(Normal)
Oo
O-O-O-
0
10.
VR7,
VRB
..cccccceeee
|
QZZC
or
Norma
O
8
10
liz
131415
-
VR7,
nput
level
control.
|
Less
than
4%
(Fe-Cr,
CrOz)
11.
VR501,
VR502
-.-.--
Level
meter
adjustment
VR.
--
QZZCRX
for
CrO2
’
12. L3, L4 oe. Recording equalizer adjustment coil.
13)
LS,
16
ties
casa:
Bias
current
adjustment
coil.
ae
QZZCRY
for
Fe-Cr
14.
Resistor
values
are
in
ohms
(Q),
1/4
watt
unless
specified
otherwise.
K
=1,000Q.
;
15.
See
values
are
in
microfarads
(uF)
unless
specified
otherwise.
Overall
S/N
ratio
More
than
43
dB
ico-farads.
:
‘
:
16.
The
mark
(W)
shows
test
point.
e.g.
V=Test
point
1.
Test
tape
—
QZZCRA
(without
NAB
filter)
=
|
17.
All
voltage
values
shown
in
circuitry
are
under
no
signal
condition
with
volume
control at minimum position.
For measurement, use VTVM.

Technics RS-M7 Specifications

General

Brand	Technics
Model	RS-M7
Category	Cassette Player
Language	English