Technics SL-PS670A

SL-PS670A SL-PS670A SL-PS670A SL-PS670A
e@ Power Switch / Loading Motor / Operation / Power Supply / Headphones Jack / Main circuit
(Parts list on Pages 34~37)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
REMOTE SENSOR
/POWER SWITCH CIRCUIT By Loanine motor circuit 3 man circuit
ievel eal R303 22 R304 22 aa : a
TAT291SA REST sw A fae = Z z [J Power suPPLy cIRCUIT
I1c651
MOTOR
DRIVE
vcor
@}————
=
R54
47K
Cc
Fy
aie
A RcDHC-278N asi} —|—— iaseeeecarancercorazcsty 0 Cay saint ee o> alias sie AE Zoure —_sb'foo
REMOTE SENSOR stat) c a ¥ 2SD2037EFTA jay q H
sRDATA
(}-—=
ian
g
ov
REGULATOR
as
ae
Nee
eee
suBa
(6)
aoe
D
1C304
{C302
oF
z
ry
|
3
a sock @ E MC74HC86DR2 MC74HC74ADR2 MC74HCIO7DR2 © S SV oo
-=
3
LRCK
(8)
-—
|
OR
GATE
D
FLIP-FLOP
J-K
FLIP-FLOP
AQ23
8
1
A
w
ae
/tLock
(9)
my
AICII
10V(9.5V)
AQig
=
'-37.2v)
ID3-E
|
JKI
ie
a
revock
{}
——}
—4
LM2940T5M
2sBi23eastve
8
Ac
IN
oa sense (]}——_ 2SCI7T40SQSTA REGULATOR REGULATOR oO i 230 - 240V
"Zz ®@ To[MJservo Ez " d 50/60Hz )
<Q MLO (2)
oy) sinctit |) wear — 1 — if |
a~ ( CN702) [ | ro.
(Page 17) ad, Mea cl PT | a a ne
(OPEN DET.) PGND M9) ‘Sal UE Q401,402
301) {9 2SDI1862QSTVE
B Tx @ REGULATOR
BcLk
&
2SA933SQRSTA
ccna || | I POWER SUPPLY [EJ HEADPHONES vAcK CIRCUIT
+8 (2) 9 CONTROL
R ch IN oy
§ Q22 21 Q8s9! IC871
A.GND SCI740SQSTA
OPERATION CIRCUIT Tree 2SC I740SQSTA DTAI24ESTP 2SDI450RSTTA 25070 Lard BAtSGON
Len In BJ eco RATAN [Soon aTK FinDRIVE POWER SUPPLY PHONES AMP
G
:
POWER
OFF
DET.
POWER
OFF
DET.
Q871,872
> 2SDI450RSTTA
ke MUTING
cNn4o2 3s} g ree ces2 R888
(1) L lys, 2V/DIV. set D40GSTVE ol- ne 10VI00 100
2)
POWER
SUPPLY
a
83
Ey
#
(3) Q33 fis cy Sie = = £8 3 3
3
i
.&,
S
Oo}
3
uk87I
7 oO
FL601(RSLOI88-F) —G}+———__ N 03! ak $3 at al 5 HES DRONES
Cc
(6)
°
a3
\a.gy
ISS254TA
aS
=
ai
8
5
“ oO >
FL DISPLAY : 2SDI862QSTVE i 35m 2 | T!
REGULATOR no al =
Q33
88m
zl
8
S|
x
Cx. x | 1
(4.23MHz)
>
z
OHQODNAHSBSOOLOHDIOSSSSHNO eae ede taal @ : a bee ey ey 3
Lilies
TUT
NM
ee
zo
Q34
Fd
o|*<
@
Re
°
ele
a vq nu @Q i)
- 2SA933SQRSTA > aT 3 S 8 ‘ cas! R887
F=4.23MHz REGULATOR a O|& 10VI00 100
Pp -
I JKLMNO Q RSTUVWXYZ oils — = DTCI24ESTP PLAY
ab
2
S
08
ly
38
Q32
MUTING
CONT.
VWs
GND87!
3F 8 ° Som | x 23 2SBI240QSTVG 2SDI862QSTV6 ——DTAI24ESTP 7.8V O
=|
=
=
03
=
:
%6
REGULATOR
POWER
SUPPLY
POWER
SUPPLY
CONT.
Q853
p-P
Uebne
es
:
DTA
II4ESTP
2SA933SQRSTA
1K
H2,048
WORT
CENTER
enais ss MUTING CONT. POWER SUPPLY VR@7I: CENTER
z if A ¢
D
$601
$602
$603
$604
$605
:
A
¢
(8) (3) (RECALL) (PPI) cm) i c
D601
ISS254TA w D ic 4 a “327v 4 Q854
g Vv E H ) DTAI2Z4ESTP
F meee DE-EMPHASIS
$608 T : C :
(RANDOM) nese ss fl M - (CLOSE Sw WW UL
1SS254TA Q 2 N Nn)
I ov R31!
°
L
B
R451
L
8.2K
JK301
S613 nu * E 470 t | sock UPD78042A014 2 ae NEF | oreitaL
M R (OPTICAL
(REPEAT)
neon
L
N
<y
(ID
MuTE
2
SYSTEM
CONTROL/
Oe
A
our}
ISS254TA K ! Pama SQIMLD M 1c8o02 =_
J ° ¢ (11) STAT P ”
P
(9.5V1
5
7%
moaTa
PLAY
LM833
M63
Tse
1
:
J
:
Tmoae
pe
DIFFERENTIAL
AMP
4
a
\
S616 4
E ioe ae fox ie / | -29.9V < 7 A rr Seats 1cs80l cso5 120P PLAY -
— D604 / if —29.9V ~ B 8) DVoD3S
sh
raadlaS
4
i
ae
rs
7
1
23.
9V
3
=
pei
ek
i
ta
@
R809
56K
1KHz,04B8
..
] 1 29.9 aN pa | Lauer O82? D/A CONV. (MASH) ae R801 180! | p-p ics8gi(i72)
H CN411 >) - (4) 46 H 470pH ips. 2V/DIV
S626 $629 G (1) c E - | 29.9V G A i G) SR DATA=— Avoo2 (77)
(4 OPEN) u ral dt 2.3¥ c893
/CLOSE)
LENeTetS
(PEAK
SEARCH)
ig
8
&
A
7
I
=29.5V
F
B
rs
SRCK
yi
are
Le
Rit
a
;
ievaz
See
yola
JKBO!
aes peal et ai D605 E A v 1 E > a: +9) Lech —H
ISS254TA
D
(4)
B
/
PLAY
e
x
Cz
FF
aa
L/R
ay
AVss
2((5)
q E c (3) c PLAY hd © m © 2 ” em LRPOL s.2V/DIV. ) Sos Re25 ov a
B
(6)
D
]
MlT..
o
a
ao
=
1
eA
J
”
oo
OV
9
3
75)
X69
g
J
ao
s62l $623 6 e E ov T=25ms / COOTER XX sala! z AAV 1323 f S =
(7) (CLEAR) |(SIDE A/p)|(TIME MODE) © 6J Tasos al al ol 1c] lel op ere] LL % OUT
iss 284TA © A) a 1 Oy Es = 4a DSRREMDIN.. 7 o D802 Re26°7V
g F {it} B Ov A als] [a in| @ ° ISS254TA 1K of
o
8
-33V
B
17)
18
i
a
a
/
i
ov
38
rn
e
-
T=6.4ms
.
44
ov
R802
L802
é
a
F . TS 23ys 33
© E ° iS oT wo 14v a 8¥ . +H Pe): Rich
©,
H
G
oT
S>
|.
[33.eMez!
oe]
Bo]
>
al
levaz.
470
ie
@
;
.
©
oa
°
oJ
Pal,
So
to
|
wo
hav
Se
1cs9l
(i72)
(9) J é C2 e' ans 6 38 28 R810 56K Q801,802 PAVEN 6.2v
G9 K] J ae pas allies § ¢806 120P 2SC1740SQSTA iRHs.Oes
° © —-EMPHASI ,
-
ABCD
2v
$0
30
3v
DRIVE
1c8gl
Q803,804
rea oo. Too p-p BA4S60FEI 2SD0I450RSTTA
J L.P.FILTER AMP MUTING
F=33.8688MHz F=33.8688MHz
=19< =a = el = =o