Technics ST-CA1080

| ST-CA1080 ST-CA1080 |
2
3
4
5
6
7
8
9
10
1
Notes
2:
(em
MAIN
CIRCUIT
(PHONO
EQ
AMP/INPUT
SELECTOR/DOLBY
PRO
LOGIC
ELECTRIC
VOLUME
BUFFER
AMP/MUT
e
Signal
line
;
#
REC
out
signal
(Lch)
c2it
R25
RZIT
R29
R221
R223
A
:
AM
(LW/MW)
OSC
signal
a
2
a
ep
ig
: AM (LW/MW) signal
.
i
i
:
JK201
R201
R213
209]
C213
C215
it
:
Positive
voltage
lines
aie
ik
330
1o00P
|o.022
secoP
woos
:
Negative
voltage
lines
Sa
Sxs
83
UA
Gis
FM
OSC
signal
alice
see
anes
dev
dec}
:
FM
si
|
Sa
ox
°
LN
]
:
signa
SO7
Re02
8
°
1c201
>
a
:
1
AF
signal
(Lch)
Rch©
wr
ANGSSESEE2
azzzx
:
Surround
speaker
drive
signal
[
e====>
-
Center
speaker
drive
signal
OOO
¢ Important safety notice ¢210
Components
identified
by
A\
mark
have
special
i
vk202
neo
Reig
(000P
|caia
cals.
R224
C216
B
characteristics
important
for
safety.
Furthermore,
=
Cran
=
320
at
ac
special
parts
which
have
purposes
of
fire-retardant
88
ae
28v35
Ree
Naso
(resistors),
high-quality
sound
(capacitors),
low-noise
PLAY
CIN)
¢——
—
WOK
12K
(resistors),
etc.
are
used
as
occation
calls.
When
88
ato
ay
replacing
any
of
components,
be
sure
to
use
only
Rch©
2410.01
manufacturer’s
specified
parts
shown
in
the
parts
list.
bee
R229
c235
£339,
¢
All
voltage
values
shown
in
circuitry
are
DC
voltage
in
Lch@
-
rH
FM signal (Stereo mono) reception mode.
«Figures
in(
—_)
Stand
for
DC-voltage
in
MW
signal
:
BE
CLour)
reception
mode.
aKs6t
202
*Figures
in<
>
Stand
for
DC-voltage
in
LW
signal
tare
peular
bee
gaal
Cc
reception
mode.
3
*
Figures
in[____]
Stand
for
DC-voltage
in
muting
mode.
VbE
7
vz
°
a
¢
Caution!
Ren
©
=
IC and LSI are sensitive to static electricity. aK901
Secondary
trouble
can
be
prevented
by
taking
care
Leoh©
=
during
repair.
Pe
5
e
Cover
the
parts
boxes
made
of
plastics
with
alminum
IN
:
oO
foil.
|
3
2
¢ Ground the soldering iron. Reh ©
e Put a conductive mat on the work table. goo
© Do not touch the legs of IC or LSI with the fingers Loch
directly. a
IN
Amscza
1¢203
g
‘ou
NJUT3IZAMT2
os
4
A
INPUT
SELECTOR
ch(O
8
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e
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out
PE
|
PEE,
CNSOIA
| 1c 901 AQg90!
Rech
NJM2279D
2SB621ARSTA
;
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AMP/SELECTOR
REGULATOR
wso2
CNSO3A
REC
OUT
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a
SIGNAL,
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(4) |
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