Yamaha CS-60 Service Manual page 40

CS60(S/# 1001-
)
III.
VCF-HPF
CIRCUIT
Set preset tone
to
"PANEL".
Turn on
the switch "XL". Set the
"HPF"
lever to
the center
position.
Then,
place
the
levers
"LPF",
"RESl"
and
RESh"
in
the
High
position.
Adjust
VR7
for cut off
frequency and
VR8
for
Q
so
that the tone color of the
M
circuit
board
may
be
the
same
as that
of other
M
circuit
boards.
IV.
VCF-LPF
CIRCUIT
In the
same manner,
set preset
tone to
"PANEL"
and
"LPF"
to center position
and
levers
"RESL",
"HPF" "RESH"
to
Low,
then
adjust
VR9
for
Q
so that the
tone
color
of
the
M
circuit
may
be the
same
as
that
of
ther
M
circuit
board.
V.
EG-VCA
CIRCUIT
1.
Set preset tone
to
"PANEL".
Depress
a
key and
adjust the
VR17, when 10V
is
fed into the terminals
AA, DA,
RA
and
0V
to
SL
through each volume of
VCA
section, so that the
DC
voltage
of
TP2
(68) terminal becomes
-200±20mV.
2.
Likewise,
add
8V
to
AA
terminal
and
10V
to
DA,
RA
terminals
as
well
as
0V
to
SL
terminal.
Depress
a
key and
adjust
the attack time of the waveshape
appeared
on
TP2
(68) terminal
as
below.
10±0.2V
-0
V
With
the
above mentioned
setting
(item
2),
when
3V
is
fed into
AA
(67)
terminal, adjust
VR20
to the direction
the
time
is
lengthened
if
the attack time
is
longer
than 125
mS
and
vice versa.
Then
carry
out
the
adjustment
stated
in
item
1
again.
VI.
VCA
CIRCUIT
1.
Set the transposition
lever
to
"2 OCT-DOWN"
(16' for CS-80) and
preset
button
to
"PANEL".
Adjust
the
VR11, when
"%"
is
set to
10
[10V
is
added
to
LP2
(24)
terminal]
and key
is
depressed,
so
that the
output
waveform from
CP4
(28)
becomes
1
Vp-p.
v-
Alignment
by
1
Vpp
2.
Set the transposition
lever
to
"NORMAL"
(8' for
CS-80) and
preset
button
to
"PANEL".
Turn
the switch
"Jl"
on and
set
"VCF LEVEL"
lever
to 10. Then,
set
the
levers
"RESH"
and
"RESL"
to
Low
position
and
"LPF"
to
High
position.
Depress
a
key and
adjust the
VR12
so that the
output of
the terminal
CP4(28)
becomes
the following waveshape with the rated output
level.
800mVpp
3.
With
the above condition, adjust the
VR3, when
"LEVEL"
is
set
to 10, so that the output
waveform
of
CP5
(32)
terminal
becomes
as
follow.
38