Technics ST-9030 - Schematic Diagram; Block Diagram of Integrated Circuits

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Notes:
1.
51:
I
F selecior
srvilch
in
"¿uto"
posit;on.
e
auto
-O
wide
2. S2-1
-52-4
Servo
luning/muting
sh,iich ¡n
"¿ulo/muÎing
on"
posìtion.
@
auto/muting
on
-@off
3. 53:
MFX
h¡-blend slviich
in
"aulo"
position.
e
auto
-
@ofl
4.
S901:
Power
source
sr^r'itch
¡n
"off"
position.
5.
5902:
.
Voltage
seleclor sw¡Ìch
in
"24Ov" posiÌion.
@
24Ov
-
ø220v
-
€)
120v-
€)1
10v
6.
lôCicated
voltage
values
are
the
standerd
values for the
unil
measured
by the DC
e¡ectron¡c
circuit tester
(high
impedancei
'ruith
the
chassìs
taken
as standard.
Thereíore,
thêre
mây exist some errors
in lhe
volt¿-
ge
values, depending
on the
internal impedance
of
¡he
DC circu¡t
lesier-
¡
are
indicated
voltage when
FM
stereo
signal
reception.
)
are
indicated
voltðge when
IF
narrov¡
pos¡tion.
r
äre indicâted
voltage
when muting circuii operation
pcsition.
]
are
indicateo
voltage when
hi-blend
circuit
operation
posilion
are
indicated
voltãge
v/hen
FM monaural
signal
reception
or
no-signal
condition.
7.
-This
schernatic
diagram
may be
modif
ied
3t eny rirne'srith
the developmeni
of new technology.
f .
i'æ:¡a*r*.s*ll.'È,Þ
¡ndicates are
signal
line.
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