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Technics ST-CA1080

Technics ST-CA1080
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ST-CA1080
Mi
REPLACEMENT
OF
THE
FOOT
Heat
melted
posts
IN/OUT
terminal
P.C.B.
1.
Remove
the
4
heat
melted
posts
on
the
Bottom
-
r
board
ass’y
with
a
pair
of
nippers
or
similar
tool.
Foot
2.
To
replace
the
foot
(RKA0011-3)
on
the
Bottom
board
ass’y
melt
the
4
posts
with
a
soldering
iron
Botiom
board
ase"
Soldering
iron
or
install
it
with
a
screw
(XTB3+6J).
ae
See
€2D
Temporarily
secure
with
screw.
Foot(RKA0053-
A)
MTERMINAL
FUNCTION
OF
IC
e¢
1C801
(M38173M6276F):
System
control/FL
drive
Terminal
Terminal
10
Name
Name
Ahead
Condensor/resistance
oscillation
/RESET
ia
Reset
input
terminal
TIMER
Reinstall
the
front
panel
ass’y
to
the
main
P.C.B..
.
ower
source
for
pull
up
(+10V)
detection
fae
er
(ce
ietaeneen
ee
KEY2
Operation
(MULTI
CONTROL)
key
signal
input
Connected
to
a
seramic
oscillator
ze
KEY1
oe
Operation
key
signal
input
for
system
clock
X801
Input
for
MIC
detection
[=f
py
GrEET.
or]
|
(Connection:
“L”)
|
5
|
ISTEREO
alia
STEREO
signal
input
for
tuner
STB-
,
6
|
LATCH
|
o
|
Latch
signal
output
HS
|
Input
for
chip
selection
Pane
TU.
JOG
B
jo
|
Rotary
encoder
input
for
tuning
volume
[7
|
cer
|
0
|
Chip
enabie
signal
output
TU.
JOGA
gS
re
aa
input
for
tuning
Pa
|
eiKT
[0
[leek
signal
output
Pa
|
pata
[0
[Data
signet
output
_——*d
Fo
DATAIN’
[1
[Data
signal
input
—_—=*S
[ss
[SMUT
|
[Not
used
open
id
[32
|
omUTE
|
©
[Not
used,
open
———————
Audio
muting
signal
output
ag
A
MUTE
|
o
|
(Volume
of
—10dB
and
less:
“H”)
Grid
output
for
FL
display
(YD
@
(Black)
(XTBS3+8JFZ1}
Mi
POWER
SUPPLY
WITH
TUNER
ST-CA1080
Power
Supply
to
Main
PCB
1.
Apply
11
V
AC
power
between
C724
and
C725
using
the
service
tool
for
AC
power
supply
as
shown
below.
(The
unit
comes
to
STAND
BY
Mode.)
2.
Short
the
point
(J391)
to
J328
as
shown
below.
FL
display
tube
lights
and
the
unit
comes
to
power
ON
mode.
Power
Supply
to
Tuner
PCB
1.
Apply
15
V
DC
power
to
and
using
the
service
tool
for
DC
power
supply
as
shown
below.
fe
wre
[=
aes
ia
|
GLKe
|
0
[Serial
clock
output
ria
|
cuxe
[0
[Serer
deta
output
=
15
[BDATAIN|
1
[Data
input
from
bus
Note:
When
applying
DC
power,
connect
between
GND
and
using
the
tool.
CN8OIA
CN802A
CN803A
Not
used,
connected
to
power
supply
[meen
[74
|
ve
|
—
|-vPimpression
for
FL
display
|
|
75
|
D.anp
[
-
|ConnectedtoGND
|
Standard
voltage
for
A/D
converter
pisee
=
|
(Connected
to
Vec)
TU.
MUTE
|
©
|
Muting
contro!
terminal
78
|
CE3
Chip
enable
terminal
SHORT:
POWER
“ON
(Main
P.C.B.)
|
16
|
B.CLK
IN
ot
|
Clock
input
from
bus
POWER
ON
mode:
Output
for
SUR
19
CHECK
&
ON/OFF
(During
POWER
ON:
“H”)
SURR
POWER
OFF
mode:
Demultipler
output
for
clock
control
Heat
detection
input
Selector
TUNER
output
re
SUNER
os
(Output
in
level:
“H”)
Cy
See
ec
|
25]
re
|
t
|
Input
for
remote
control
47
y-P
PATS
Data
output
to
bus
(Normally
“H”)
OUT
:
B.
CLK
sey
et
eee
er
Clock
output
to
bus
(Normally
“L”)
Power
control
output
POWER
&
(During
POWER
ON:
“H”)
JO
Ke)
(Unusual
situation:
“H”)
Audio
muting
2
signal
output
ATUNER
|
o
|
(Volume
of
—70dB
and
less:
“H”)
|
23
|
VR.
JOG
B
Rotary
encoder
input
for
main
|
24
|
VR.
JOGA
volume
AC
IN
AC
power
source
input
terminal
for
an
electricity
failure/clock
DC
POWER
SUPPLY
PANA-07037
/
DRUCK
1

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