Technics SA-CH750

i
SCHEMATIC
DIAGRAM
eINPUT/OUTPUT
TERMINAL
CIRCUIT
(Pars
ist
on
pages
33~37)
pee
eee
1
SA-CH750 SA-CH750
AF signal line
= = = ==: Negative voltage line
3
_
4
5
6
: Surround SP. drive signal line
8 9
B | INPUT/OUTPUT TERMINAL CIRCUIT
Acgit
1000p
yK201 ABC
AC (i)
oct TT
C. GND (3)
ae S Sen
DC. GND (6)
To SH-CH750/ —&%
SL-CH750 —
B (sa) °
K801 a
— Rech INQ
Leh IN (tay
Rch ouT (13)
GND Om RIS58 1K
(Leh out
na} oo RIS7 IK
Bal bo
of7T oe
E BA
CN70IA
FL A
ree .
ee Bi
i Cena
To Bd main A 2 a ie
CIRCUIT or is} 8
(CP701) ac (sy — c
(Page 14) oT (4)
CLK G)
STEREO (2) A
ce Q) 8
F CNIO3
bo
Tof_] MAIN Sp. . 5
CIRCUIT TL ch IN te) B
(CP103) PRatin A
(Page 14) ‘Roh INQ)
For(GC, GN) areas.
JK35/
FAN
MOTOR
(2)
2SC33IIAQSTA 2SC331IAQSTA
MOTOR
DORIVE
SWITCHING
ee
8
x
(8)
VR
DT
=
=
‘cael
aN
ie
my
G)
vR
CLK
fg e408, 9401, 402 BU2040F-T2 8 BO Ov st | ae
A)
2SK38IBCTA
SYSTEM
&
()
8.0aTa
|
Creeuit
OD: ov aot SWITCHING
CONTROL
(4)
B.CLK
(CN6OI)
~14v
MAI65TA
()
G)B.cno
|
(Page
17)
R472
‘
451
wi
GQ
tin
120,
ov
402,y
3|
UN4IIOTA
Pe
Y
7
(es
S
WITCHING(SURROUND)
0402
w
“14
JG
MAI65TA
Q45!
\
E
as
P
2
en
R202
23
a
e
ggige
cP6o2
se]
8s
R805
5.6K
|
For
(GC,GN)
areas.
A
(8)
DATA
B
———_@)
cLk
cc
———~©@)
vp
To fry
8 () FL CIRCUIT
A ————@) FL (CN6O2)
(3) HOLD | (Page 17)
(2) +813)
°
1C201 gs (1) D.GND
LC7536
oR
ELECTRIC c2i4 6
VOLUME
‘8200P
--(E,EB,
6251
@303
EG
0.01 + 6C, gh) UN4II5TA BA4558FTI ‘as UN4IIITA
MUTING R3ig6 BUFFER AMP om MUTING CONT.
OR.
3 IM on
C292 0.022
cP603
we tae o
a an
5
nai
si
SE
aEREERIREEnERnenaaaen
oe
rt
“7
HP
Loh
OUT
2.
ped
G)
HP
Reh
OUT}
gr
=
Sol
ic3o
1G)
HP
ond
oRary
CIRCUIT k
M5218
AL
D
GQ)
3
HEADPHONE
AMP
r
sp
TENGOS)
°
3
3
c
(3)
v1
(Page
17)
a
n
>
>
8
|
|
2)
CE
® O—) A i (1) STEREO
CN702A
eee Ul ;
0 Os a I
(3) oc
toEmain
| Stes CIRCUIT
R310 -R3I2 HOLD (CP702)
(€,£8,£6)
120
120
a
()
+813)
(Page
14)
-
(G6C,GN)
.
(7)
0.GND
8
om
°°
Q352,
361
0362
8
KSD471ACYGTA 2SC3327ABTP
1C202
MOTOR
DRIVE
MOTOR
DRIVE
M5219FPTA
BUFFER AMP
=
x 83 a252
i Ss UN4II15TA
+
we
201,202
.
MUTING
© 2SDI450STA CONT.
5 By MUTING nee!
he
pee
|
)
RL,
(2) RR
LT Q)%6no To Ey main
(4) R ch OUT> CIRCUIT
1c202
5
rene
(5)
Lch
out}
(CPS5O1)
a
Q301,
302
i
G)
pwr (Page
14)
8
2SDI450STA,
4
(7)
T
MUTE
«
Q8ol
J UN4IIITA
/ RELAY DRIVE
’ . ne
55
MUTING
D351
R354
R353
0203,
204
=o
MAI6STA
270K
2SDI450STA
27
TC3SI
MUTING
22
For
(GC,
GN)
areas.
BA4558F TI
SIGNAL LEVEL DET.
-—19-
—~20-