Yamaha CS-60 Service Manual page 38
Combo synthesizer
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Also See for CS-60:
- Instruction manual (58 pages) ,
- Owner's manual (28 pages) ,
- Owner's manual (13 pages)
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CS60(S/# 1001-
)
KBC
K-C
Voltage
(HIGH)
(LOW)
VR1
VR2
r
VOLTAGE ADJUSTMENT
LOW
Adjust the
VR1, when
"LOW"
lever
of
KEYBOARD
CON-
TROL
is
fully
lowered
(—
15V
is
input
into
LI
terminal)
and
C2
key
is
depressed, so that the
Oi~0
8
terminals
become
—2.76 ± 0.12V.
Also
make
certain that
those terminals
become
+2.76V
when
the
lever
is
fully raised
(+1
5V
is
input).
HIGH
Adjust
the
VR2, when "HIGH"
lever
of
KEYBOARD
CON-
TROL
is
fully
lowered
(—
15V
is
input
into
HI
terminal)
and
Cs#
key
is
depressed, so that the
Oi~Os
terminals
become
—2.76 ±
0.12V. Also
make
certain that
those terminals
become
+2.76V
when
the
lever
is
fully raised
(+15V
is
input).
SUB
VR5
O
VR8
VR4
T
VR12
&
VRf
VR7
U
'
&
VR10
J
»
VR13
VR9
LP
VR
1
H"
VR14
<$
(§
VR2
<s>
V R15
0=
I.
SLIDE
CONTROL ADJUSTMENT
1.
Adjust
VR1, when
slide
control
is
turned
on and 2.000±
0.001
V
is
fed
into the
I2
(23)
terminal, so that the voltage
of
TP1
(63) terminal
becomes
-2.000
+ 0.002 V.
2.
Adjust
VR2
so that the
same
voltage
of
TP2
(64) terminal
is
obtained
that
ofTPl(63).
3.
Adjust
VR14
so that
TI
(60) terminal
becomes 6.15V ±0.05V.
Then,
make
certain that the voltage fluctuation
of
the
TI terminal
is
within
±
20
mV
when
Slide
control
is
repeatedly switched
to
ON
and
OFF.
4.
Adjust
VR15
so that the voltage
of
1
1
(24) terminal
becomes
9.5V±
0.1V.
II.
TOUCH
RESPONSE AMPLIFIER
CIRCUIT
Adjust
VR3, when
keys
are
hardly
pressed, so that the voltage
of
TRO
(3)
terminal
becomes 6V.
III.
TOUCH
RESPONSE
CON
-
OL
CIRCUIT
1
First
of
all,
make
sure that
100
±
1
Hz
and
3
±
0.1
V
is
added
to
SUI
(5)
terminal
by
moving
"SPEED"
lever
when
SUB-OSC
"FUNCTION"
is
set
to
"V.
2.
Adjust
VR5, when
6
±
0.1
V
is
added
to
OD
(38)
terminal, so that the
output
from
OO
(39) terminal
becomes
3±
0.1V.
3.
Moreover,
adjust
VR4,
so that the center voltage
of
OO
output
terminal
becomes
0.5
± 0.1V.
4.
With
the
above
situation, adjust
VR6, when 6±
0.1V
is
added
to
FD
(41) terminal
through
Touch
Response
"VCF"
lever,
so that the
output
from
FO
(40) terminal
becomes
3
± 0.1V.
36
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