Yamaha CS-30 User manual

YAMAHA
SYNTHESIZER
r
OWNERS MANUAL
m^

SYNTHESIZER CS-30
We thank you very much for your purchase of our YAMAHA synthesizer CS-30. The CS-30
is afull-fledged synthesizer incorporating asequencer that has been developed based on YAMAHA 's
superior technology and rich experience cultivated over the years with YAMAHA Electone Organs
and by giving full play to the latest in IC technology.
The synthesizer, unlike other musical instruments, has no fixed sound of its own. However,
it has the capacity of producing, with practically unlimited freedom new sounds that no other
instrument can produce. The new sounds that you have created yourself with the CS-30, will no
doubt direct you along apath that will lead you into anew world of music.
The CS-30 is afull-fledged synthesizer equipped with 2systems of VCO, VCF and VCA as well
as 3hXis and abuilt-in sequencer. To make full use of such functions and to discover original sounds
that are uniquely yours, we urge you to read the contents of this Owner's Manual carefully.
^
©
EG SELECTOR
MKBIl
Ja—/y—
PWM
MOD VCO 2PWM
FUNCTION DEPTH
I- MODULATION -^
PWM
FUNCTION DEPTH
"-MODULATION^
J
INPUT CUl on- FRQ
LEVEL K&D FOLLOW RFSONANCf
INPUT
LEVEL MOD FUNCTION fG SELECTOR
MOD DEPTH EG DEPTH
"""^ CUTOFFFRQ
KBD FOLLOW RESONANCE
MOO nfPTH FG DLPT^
MOO FUNCTION EG 5FIECT0R
VCF I
VCO 1MOD FUNCTION

Full attention should be paid to the following points
prior to operation.
Place of installation
When installing the synthesizer, such places as those
subjected to direct sunshine, or dusty or highly
humid places should be avoided. Furthermore, in
no case should it be installed close to fire, or heat-
generating objects such as apower annplifier, as it
may not only cause disorders and cabinet deforma-
tion but may also lead to afire disaster.
Cleaning
When cleaning the set, do not wipe the panel, or
keyboard with athinner-type liquid, or spray of the
same-type liquid, as it will cause discoloration, or
stains. Always wipe it with asoft and dry piece
of cloth.
Connection
Connections such as to amplifiers should be carried
out properly with full care. Erroneous connections
will lead to disorders of the synthesizer and ampli-
fier.
VOLUME
The application of an excessive input to the amplifier
may cause damage of the amplifier or speakers. For
this reason, careful consideration must be given when
setting the volume.
CONTENTS PAGE
CHARACTERISTIC POINTS OF
SYNTHESIZERS 4
CONNECTION 6
BASIC SETTING 7
FUNCTIONS
KEYBOARD/PITCH 8
VC01/VC02 9
VCF1/VCF2 10
VCA1/VCA2 11
TRIGGER/EG 12
EG/EFFECT 13
SEQUENCER 14
EXTERNAL 15
OPERATION SEQUENCE 16
TROUBLE SHOOTING 20
BLOCK DIAGRAM 21
SOUND MEMO 22
SPECIFICATIONS 23
VCF 2^^G
YAMAHA
QZ
MOD fUMCTlON
a
:: ^^^S»0«S
CLOCK. SPEED hJ-:
INITIAL ATrACK ATTACK DECAV RELEASE
LEVEL LEVEL TIME TIME TIME
^^ SiH;:> PI""""
IITIMf -6
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CHARACTERISTIC POINTS OF SYNTHESIZERS
The function of the synthesizer is to electrically
synthesize and control the three elements of sound,
that is, interval, tone and volume as well as the tiniewise
change from the instant asound is generated to the
point it fades away.
The interval is controlled by the VCO, tone by the
VCF\ volume by the VCA and the timevk-ise variation
of sound by the liG. "VC" in VCO, VCF and VCA
stands for "voltage-controlled". Now. let us consider
what kind of function this voltage control has in the
synthesizer. The drawing at the right is the block
diagram showing the basic composition of asynthesizer.
•KEYBOARD CIRCUIT
This circuit generates the key's voltage (KEY
VOLT) that corresponds to the interval, and the
signal voltage (TRlGGliR) that indicates that the
key is being depressed. Although the TRIGGER will
bccoiTie "o" volt when the finger is released from
the key. the Ki:Y VOLT that indicates the interval
will be memorized by the SAMPLE AND HOLD
(S/II) circuit until the next key is depressed.
The drawing at the right shows the relationship
between the key's interval and KEY VOLT voltage
together with the wave forms of the TRIGGER and
KEY VOLT signals mi (E) ^do (C) -> sol (G)
are depressed.
•VCO (Voltage control oscillator)
The VCO makes asound source of afrequency
that corresponds to the KEY VOLT of the key-
board circuit. It oscillates simultaneously such sound
source wave forms as saw-tooth waves and square
waves that have agreat number of harmonics and
sine waves of asingle frequency. Although the
oscillator frequency corresponds lineally to the KEY
VOLT value, if the oscillator should be controlled
while adding an AC voltage such as low frequency
oscillator (LEO) to the KEY VOLT voltage, it will
be possible to modulate the key interval with the
LEO, or the like. The function of adding this voltage
is carried out by an adder. Regarding this voltage
value that is used to control the VCO. it is possible
to freely control the VCO's oscillating frequency
in accordance with the vi)ltage value since asyn-
tiietic voltage formed by several AC wave forms is
used instead of afixed DC voltage.
Fhc drawing at the right shows acase of VCO
control in which the sine waves of the EE'O is
added to the KEY VOLT. Needless to say, it is
also possible to add an EG voltage in place of, or
simultaneously with, the Li'O.
•VCF (Voltage controlled filter)
The VCF, wliich is the heart of the synthesizer,
VCO VCF VCA
EG EG
KEYBOARD FOLLOW
A^ r-K
KEY VOLT
KEYBOARD TRIGGER
VO L^AGE KEY /OLT
C
J^-J i
E
HOLD HOLD
G
PITCH
TRIGGER
'
f! ^^ C3
EG C
132MKEYON
KEY OFF
-KEY ON KEY OFF
^
VCO MOD
CONTROI VOLT
LEO
KEY VOLT
VCO OUT
o

creates tlie tone by clianging the harmonic structure
by cutting, or emphasizing, witli the lilter apart of
the harmonics of VCO-produccd sound source having
alarge number of liarnionics.
Tlic VCl" creates the tone by changing tiic cut-
off frequency (existing on the borderUne between
the passage and siiicld-off sections) by controlling
tlie voltage, 'lo eliminate any harmonics structure
deviation (KEYBOARD FOLLOW) caused by the
difference in intervals, it is designed so that the
cut-off frequency will shift along with the shift in
the interval, by adding the KLY VOLT voltage of
the keyboard circuit to the IX' voltage generated
with the use of the control. The tone can be rendered
with atimewise variation by adding to these con-
trol voltages avoltage such as that of the LFO, or
KG, that changes with time as in the case of the
vco.
The drawing at the right illustrates the mode in
which the cut-off frequency of the LPF is controlled
by the LG.
VGA (Voltage controlled amplifier)
The VCA is an amplifier block whose amplifica-
tion degree is varied by the control voltage.
The drawing at the right shows acase in which
the amplification degree of the amplifier is controlled
by the LG voltage to give atimewise variation
(envelope) to the volume, from the point the sound
starts up to the point it fades away. Naturally, as
in the cases of the VCO and VGL, it is possible
to add avoltage such as of the LFO to the FG
voltage and use the resulting voltage as VGA's con-
trol voltage.
EG (Envelope Generator)
The FG has the function of producing the voltage
curve that indicates the condition in which the
soimd changes in order to render the sound with a
limcwisc variation. Given asignal to initiate the
start and end of the envelope by the TRIGGFR
voltage of the keyboard circuit, the FG generates
signals that will be used as the control signals for
the VCO, VC\\ VCA. etc.
In addition to the elements described above, the
synthesizer has such elements as the LFO (low
frequency oscillator) that functions to give aperi-
odical variation, and controls to enhance the cilccts
of the performance. But in any case, the fact re-
mains the same that something is controlled by
changing the voltage.
In this way, since all controls in asynthcsi/.er arc
effected by using the voltage value as amedium,
the synthesi/.cr is capable of producing various
variations of sounds with case.
CUT OFF FRO.
L
CONTROL
VOLT
"~" EG
KEY VOLT
AMPLITUDE
INPUT OUTPUT
EG I
EG 1,1
TRIGGER
KEY-Orj KEY-OFF ON OFF ON
[ijttVrcncf in cnvclapc wiivofoniis caused by
Irii^Ecr wavctonns.

CONNECTION
®
FUSE -OUTPUT-
n®® ©
U2 2
III
AC Outlet
Stereo Amplifier Pin Plug
to AUX terminal
@@
coNTROLLEit fSEQUENCER
OUT OUT -KEY VOLT—
IN OUT
-TRIGGER —
l@ (@)
IN OUT
-EXTERNAL-
mI
I'or details on termi-
nal (4) of sequencer
output, sec Page 15.
I'or details on terminals
(5) and (6), see Page 15.
Use OUTPUT terminal "1+2" when using asingle amplifier, and
both "1" and "2" when using two amplifiers.
(T) POWER CORD
Connect the power cord plug into an AC outlet.
(2) OUTPUT
These are output terminals. "I" and "2" will feed
out outputs respectively of VCA-1 and VCA-2, while
"1 +2" will feed out an output wherein VCA-I and
VCA-2 are mixed.
•Switchover can be effected annong the voltage levels
to be fed out.
•The amplifier to be connected to the synthesizer
should have as flat as possible frequency response.
(B FOOT CONTROLLER
This is aFOOT VOLUME terminal (volume con-
trol).
(4) SEQUENCER
This is to be used when the set is to be played
through the sequencer of CS-30, with another syn-
thesizer having KEY VOLT and TRIGGER terminals
connected to this set. For further details, please
refer to Page 15.
©KEY VOLT &(6) TRIGGER
By connecting the set with another synthesizer
having KEY VOLT and TRIGGER terminals, this
set can be used as amultiple-system synthesizer.
See Page 15 for further details.
(7) EXTERNAL
By connecting an electric guitar, or an electric
piano to this terminal, asynthesizer effect can be
given to the sound source. For further details, please
refer to Page 15.
•Connections should be carried out carefully as an
erroneous connection will become the cause of
troubles of the synthesizer and amplifier.
•Never apply an excessive input (5V, or more) to
the KEY volt's IN terminal as it will cause trouble
to generate in the synthesizer.
-»
©

BASIC SETTING
The functions of the respective controls and switches will be described in the section starting
from Page 8. Here we shall merely refer to how basic setting is carried out when sounds are to be
produced experimentally to check the synthesizer, or amplifier.
This is for the case in which the saw-tooth waves (W)of VCO-1 are fed out from OUTPUT J
and the square waves (n_ )of VCO-2 from OUTPUT 2in their original form. OUTPUT 1+2
will feed out awaveform wherein the two are mixed.
T2 tjl
19
Setting is carried out by checl<ing the controls and
switches from 1to 21.
Once the controls and switches are set in the state
of basic setting, sounds will be produced no matter
how other controls and switches may be set. How-
ever, to acquire abetter understanding of the func-
tions of each section, we suggest that you set them
as shown in the diagram.
When sounds cannot be produced for some un-
known reason, the setting should be brought back
to the basic setting.
BLOCK DIAGRAM
-™^
^\"::^ /
RD
,« ^H
'*'

FUNCTIONS KEYBOARD/PITCH
©KEYBOARD
The CS-30 is amonotone synthesizer that covers
3-1/2 octaves with its 44 keys. When 2, or more,
keys are depressed simultaneously, priority will be
given to the key of the higher, or highest interval.
(Priority to higher sound)
POWER
POWER
This is the power switch. When turned ON, the
POWER indicator will illuminate.
OUTPUT
(3) VOLUME
This control is used to control the overall volume
of CS-30. The control on the amplifier side should be
fixed to an optimum position.
©BALANCE
Used to control the volume balance between
VCA-1 and VCA-2 in the CS-30 which has 2systems
of the VCO, VCF and VCA.
©PHONES
This is an output terminal for the headphones.
PITCH
®TUNE
Used for adjusting the intervals. VCO-1 and VCO-
2will change in the same manner.
•It takes roughly 30 minutes for the synthesizer's inter-
vals to stabilize. Accordingly, when tuning Is to be
carried out, power should be switched on approxi-
mately 30 minutes prior to tuning.
(2)DE TUNE
Used for adjusting the intervals of VCO-1 alone.
The interval of VCO-2 will remain unchanged.
(3)EG SELECTOR
Effects switchover of envelope generator (EG).
®(2) @
TUNE
6
*«
(4) EG DEPTH
Used when modulating the VCO with the envelope
generator: adjusts the depth.
©

FUNCTIONS VC01 /VC0 2
(2) 3(4)
fi^
O- 3tt
S, :tf-^
0-'' tt
s
-0 '^
(5) (D (7) a
KBD *
®FEET
As stated earlier, the keyboard covers 3-1/2
octaves v^ith its 44 keys. By making use of this
FEET Switch, the sound range to be covered can
be shifted as shown in the diagram.
•VC01: Covers 2' ~64'
•VC02: Covers 4' ~128'
(2)PW
Adjusts the pulse width of the square wave out-
put of VCO. (50% ~909?)
FEET
4FEFT
iSFEEf
32FEET"^
64FEEf
28FEET '
8FEET
VCOl
VC02
(3)PWM
Changes the pulse width at intervals equivalent
to LFO's period. (90 ±9% at MAX)
(4) MODULATION FUNCTION
Used for switching over the way in which VCO
modulation is to be applied.
•At S/H, sounds whose intervals vary in an irregular
manner will be fed out.
•At EXT, the intervals will be varied by the external
input.
PW:Pulse Width
(at maximum change)
-5096- -—9096
Sym
angu
metric rect-
lar wave
Pulse WicIt h: 90%
(gjMODULATION DEPTH
Modulates the VCO using the period of LFO.
©MOD VC02
VCOl will be modulated by the output of VC02.
(7)SEQ/KBD
This switch is to be positioned to the KBD side
for keyboard performances and to the SF^Q side
for automatic performances by the sequencer.
PWM: Pulse Width Modulator
1S
C5
^It changes in the order of
^"'
.I-;;:
©

FUNCTIONS VCF1 /VCF2
Vj
C)
®(2)(3)(4)(5)©0(8)
O'
-^
OW
-Br"^
MOD DEPTH EG DEPTH
^'-' o
LEVEL MOD FUNCTION EG SELECTOI
©
&
W""<U
10D FUNCTION EG SEltcTOR
YAiAHA
LEVEL
OUTPUT
LFO IN
®INPUT/LEVEL
These are input changeover switches and acon-
trol for the VCF.
•No control is provided for the VCF-2 side.
©CUT OFF FRQ
Adjusts the cut off frequency of the VCF.
(3) RESONANCE
Adjusts the resonance in the neighborhood of
the VCF cut off frequency.
@KBD FOLLOW
It is designed so that the cut off frequency of
the VCF will shift, following the intervals of the
keys. This is the control used for adjusting the
following properties.
(5) MOD FUNCTION
Selects waveform of LFO with which VCF is to be
modulated.
©MOD DEPTH
Adjusts modulation degree.
0EG SELECTOR
Selects envelope generator.
(D EG DEPTH
Adjusts the way in which EG is to be applied.
®

FUNCTIONS VCA1 /VGA 2
®®@) @(5)(6)@(D
vcr I
VCf 2
^: ir
10D DEPTh
VCO IMOD PjNCTIOf
VCF 2EG
YAMAHA
I
LEVEL
.: i.l
1
1,
-'. 1
. 5.
OUTPUT
®HP/BP/LP
This is aswitcli used for changing over the filter
characteristics of the VCF.
HP: High pass filter
BP: Band pass filter
LP: Low pass filter
(DVCFI, VCF2 &VC01
Permits mixing of sine waves of VCFl, VCF2
and VCOl at VCAl.
@HOLD/EG
When positioned toward the HOLD side, the
interval of the key that has been depressed im-
mediately before operating this switch will be con-
tinued to be fed out regardless of the EG.
•Offers convenience for pitch matching.
•When positioned toward the EG side, the volume
variation set by the EG will be gained.
@EG A/C/E
Aswitch used for changing over the envelope
generator employed for the VCA.
©MOD FUNCTION
Aswitch for selecting the modulation wave
form.
•When set to EXT, permits modulation to be carried
out by the use of external signals.
©MOD DEPTH
Used for modulating the VCA with the period
of LFO.
RMO (Ring Modulator)
Enables unique effects to be gained by ring-modulat-
ing the VCF 2output, by using the sine waves of VCO 1,
or LFO.
®NORMAL/RMO.
Adjusts the modulation degree of ring modulation.
@VCO 1/LFO.
Selects the modulation wave of ring modulation.
<D

FUNCTIONS TRIGER/EG
®® (3)
Q'"
EHJ
A. ;:'h;~:»v- i;" B"r:
,CK DE :AY SUS" aim RFl EASf
TR IGGER
®LFO/NORMAL
When set to the LFO side, atrigger will be
apphed synchronizing with the LFO period for the
whole duration the key is kept depressed.
When set to the NORMAL side, atrigger will be
applied the instant the key is depressed.
(g)SINGLE/MULTI
When positioned to the MULTl side, slur execu-
tion toward ahigher interval is possible.
J!L
w
SINGLE MULTl
/^
1V
t
^- The interval
will change at
the next key
but the envel-
ope will not.
'—The first key's envel-
ope.
1/^
I—Anew envelope
starts at the
next key.
The first key's envel-
ope.
EG1 EG2 EG3
These are envelope generators employed to effect
control of the PITCH, VCF, VCA and LFO blocks.
(3) KBD/SEQ/EXT
Aswitch used for selecting the trigger input.
It is to be positioned toward the KBD side for
keyboard performances, toward the SEQ side for
automatic performances by the sequencer and toward
the EXT side when a trigger is to be applied by
an external input.
©INITIAL LEVEL (IL)
©ATTACK LEVEL (AL)
(6) ATTACK TIME (AT)
(7) DECAY TIME (DT)
©RELEASE TIME (RT)
(9) SUSTAIN LEVEL (SL)
©
E61 AT K- DT -
ENVELOPE
KEY ON
KEY OFF-
TRIGGER
EG2,3 ^ATH DT-i I—- RT-1
SL
ENVELOPE

FUNCTIONS EG/EFFECT
)NORMAL/TIME x5
When positioned to tlie "TIME x5" side, the
lengths of AT, DT and RT will become 5times the
NORMAL time.
The Boutputs of EG-1 are inverted Aoutputs, wh
lie the Doutput of EG-2 is an inverted Coutput.
In the PITCH, VCF and LFO blocks, the EC's
A, B, C, Dand Ecan be used by effecting change-
over to any of them that is desired.
In the VGA block, the A, Cand E outputs can be
used by changeover operations.
When the EG outputs C, Dand Eof EGs 2and 3are
used for the PITCH block, the intervals will shift as
set by the SUSTAIN LEVEL.
2) (3) ®(4) (5) (6)
LFO PORTAMENTO
®SPEED
Used for adjusting the period of LFO. (0.1
lOOHz)
(4) PORTAMENTO
Determines the time during which the PORTA-
MENTO effect is to be varied.
@EG DEPTH
Used for modulating the period of LFO with the
envelope generator.
(3) EG SELECTOR
Aswitch used for changing over the envelope
generator.
PITCH BEND
©PITCH BEND
By sliding the PITCH BEND lever longitudinally,
the pitch can be changed continuously through man-
ual operation.
(6) LIMITTER
Enables intervals to be changed within the range
of M,4X ±1octave.
®

FUNCTIONS SEQUENCER
®(3) @®(S
miAHA
The following describes the functions of the respec-
tive controls of the SEQUENCER block. For actual
operation, refer to Page 19, "OPERATION SEQUENCE,"
"SEQUENCER PERFORMANCE."
®CLOCK SPEED
Adjusts the sequencer's period.
©STEP
Aswitch to change over the number of steps of
the sequencer.
•Enables changeover among steps 1~8.
(3) CLOCK/MANUAL
START/STOP
When the START/STOP switch is depressed with
the CLOCK/MANUAL switch positioned to the
CLOCK side, the sequencer will start operating.
When the START/STOP switch is depressed again,
the sequencer will stop operating.
When the START/STOP switch is depressed with
the CLOCK/MANUAL switch set to the MANUAL
side, the sequencer will advance one step each.
(4) NORMAL/KBD
When positioned toward the NORMAL side, inter-
vals can be set by using the respective controls
for Pitches 1~8. (The SEQ/KBD switch of the
VCO block must be set to the SEQ side.)
When positioned to the KBD side, the interval
of the last key that has been depressed will be
memorized by PITCH 1. The intervals of PITCHES
2-8 will follow the PITCH 1interval.
©HOLD
When the HOLD switch is pushed, while keeping
the key depressed, the intervals of the sequencer
will cease to follow the key. (However, the NOR-
MAL/KBD switch must be set toward the KBD
side.)
;^If-h—h111.^ H
(.11—J1CLOCK
\
CONTROL VOLT
TRIGGER
TRIGGER
-^TIME
!CONTROL VOLT
-TIME
©PITCHES 1~8
Adjusts the intervals for each step for sequencer
performances.
•The sequencer signals can be fed out to another
synthesizer through the SEQUENCER terminal pro-
vided on the rear panel. For further details, refer
to Page 15.
e

FUNCTIONS EXTERNAL
By connecting external signals to the EXTER-
NAL terminal provided on the rear panel, it is
possible to use these signals as the sound source,
or at the same time, to detect these waveforms
for use as trigger signals with which the start of
the EG (envelope generator) is controlled. Fur-
ther, by connecting such musical instruments as
an electric guitar, or electronic piano, synthesizer
operations are possible (will function, for ex-
ample, as aguitar synthesizer).
(T) EXTERNAL
This is aterminal used for feeding in external
signals such as llu)sc of an electric guitar, or elec-
tronic piano.
(2) 0/-20
Switching is to be carried out in accordance
with Ihc external signal levels.
•INPUT &LEVEL (VCF1)
When external signals are used as the sound source,
the INPUT switch is to be set to the EXT side and
the volume should be adjusted by means of the
LEVEL control.
(D
EXTERNAL
(DTRIGGER &LEVEL
When the trigger is to be applied by external
signals, the EG block's trigger switch. KBD/SHQ/
EXT is to be set to EXT. Then, the condition of
trigger application should be adjusted by means of
LEVEL.
(4)SIGNAL LEVEL
Used for adjusting the input level of exiernal
signals.
WHEN TWO SYNTHESIZERS ARE USED
asSQ
Synthiesizer 1
Synthesizer 2
SEQUENCER
DATA
Synthesizer 1OliT
QUENCE1
OUT -KEY VOLT-
OUT
-Tf^lGGER-
IN W
OUT
Synthesizer 2
-SEQUENCER-
OUT OUT -KEY VOLT-
IN OUT
-TRIGGER-
IN OUT
Fig. 1Fig.
This synthesizer ean be used as amultiple-system synthesizer by transmitting the Iceyboard data
of this CS-30 by means of the KEY VOLT, TRIGGER and SEQUENCER OUTPUT terminals (or
to any other synthesizer provided with similar terminals).
•Since control is effected by DC voltages, thorough care should be taken in the connection of
these terminals as erroneous connections may cause trouble to generate in the synthesizer.
®KEY VOLT
This is the signal by which the intervals of the
VCO arc determined.
©TRIGGER
This is the signal to indicate the KEY-ON and
KEY-OFF timings of the keyboard.
•Fig. 1show/s the connections for the case of keyboard
performance of Synthesizer 1, with control effected
by Synthesizers 1and 2.
(DSEQUENCER OUT
CONTROL VOLT
Similar to the KEY VOLT, these are signals by
which the intervals of the VCO are determined.
TRIGGER
These are TRIGGER signals synchronized with
the sequencer's clock.
•Fig. 2shows the connections for the case where the
data of Synthesizer 1are transmitted to the CON-
TROL block of Synthesizer 2to make sounds at
Synthesizer 2. ®

OPERATION SEQUENCE
BASIC SETTING Same as ihal sliown on Pugc 7.
LEVEL
-^ KEY-
BOARD
PITCH
OUTPUT
KBD/SEQ 9
LFO IN
SETTING
1KeieiTing [o "C"0^fNECT[^N'^ sel the liyrthe-
sizcr.
2Swiicli (111 the synthcsi^.cr and aniplif'icr and wl
ihe amplifier'!; VOLUME ijoiitrol to ati optmumi
position.
3When carrying out tuning, remeniher to switch on
power about 30 minutes ptiar to tuning,
SOUND MAKIMG
1iicfortr piaying tlie synthesiirei:, ytu must lit art
by making your own original sounds.
ZThe sigiiiiiii, wliicit tlow tVom the left side of
the control panel to the riglu, ean be contHjiled
by Ihe respective eoritroi knobs.
3Set the eoutrols of the VCK and VCA as siiowii
in the above drawing (Basic Sediitgl. The signal of
the interval of the l<ey that has been depressed will
be prodiieed without receiving iuiy '\pieijig"' from
either the V<;F, or VC'A,
•With the synthesizer in ttiis rnode, if (tie BAL-
ANCE lever is positioned toward the "1" side,
jaw- tooth waves of VCO-1 will be fed out without
any modulation, aod wiion positioned toward the
"2" side, square wav&s will he fed out. Further,
when positioned to the middie, waveforms where-
in the two afe combined will be fed out,
4Starting froir I3aiiic Setting, [iiake sotmds fof
one system each. Finally, mix the 2systems, and
complete the overall sound, in the CS-30, ihe signal
floMfs cat! be cotnbined into severii] kinds of patterns
by seleeting tiie input selector and by carrying out
mixing operations.
5The operational sequence of three signal flow
p;tt terns is described below.
G In itctual sound rrtaking, tlic sequence can be
i'rceiy changed, wliile confintiing the sounds with
your owji ears and adjusting the eaiUrol knobs, or
chaitglftg the flow pattern. Ht>wever, if you adjust
tiie controls in adisorderly ittanuer, you wotjid
event jaily beconte too coitfused to undcrstatid which
block you are controlling, or whicii control to use
lor wiiiqh block. When carrying out adjustment,
you should be always mindful of tiie flow tif the
soutid source sljjnal flow as well as ol' the control
signal (low.
©

OPERATION SEQUENCE
VCO-2 -> VCF-2 ^VCA-2 Pattern
As the most basic and simple pattern, the case in which sounds are made by the VCO-2 -^ VCF-2
-^ VCA-2 flow is described below. Push down the BALANCE lever to the "2" side.
(5 (6) (D (3)® (T) ®
QiQy
6^
3D
0) ^
YAMAHA
Q
D
BLOCK DIAGRAM
UCK VCO-2
KBD
KBD SEQ
INPUT FILTER
.CK VCF-2 ^VCA-2 2
o
1VCO BLOCK
•Select the sound source that is to become the
fundamental sound, using the INPUT switch (T)
of the VCF block.
•Determine the keyboard's interval range by means
of the FEET switch (2).
•When aPL wave is being used, it is possible to
change the pulse width of the VCO by means
of the PW @.
•Further, by using the PWM (4) ,it can be ut-
ilized as a sound source of afurther different
touch.
•By using the EG DEPTH ®and EG SELECTOR
(6) of the PITCH block, the intervals can be rend-
ered with an envelope.
2VCF BLOCK
•This is the stage at which the basic harmonic
structure is made. First, select the filter using
the FILTER switch ®of the VCA block.
•Produce the tone of your preference by adjust-
ing the CUT OFF FRO (8) and RESONANCE (9).
•Apply an envelope to the tone by using the EG
DEPTH @, EG SELECTOR ®and EG (en-
velope generator).
3VCA BLOCK
•By the use of the EG changing switch ®,
select the envelope generators for A, Cand E.
Apply an envelope to the volume by operating
the respective levers of the envelope generators.
4LFO BLOCK
•Adjust SPEED (1) to ^,^ ^
an adequate speed.
•It is possible to mo-
dulate the respective
blocks by adjusting
the IVIODULATION of /^si ©Wl
VCO, VCF and VCA. I—'
•It is also possible to
modulate the LFO
period (SPEED) by
using the EG SELECTOR® and EG DEPTH®.
5Steps 1througJi. 4are the basic sequence to be
followed for making sounds. Actually, however, the
player can create sounds that best fits his (or her)
image by adopting afreer sequence.
®

OPERATION SEQUENCE
PATTERN USING TWO VCOs
®(D (D ®(D
©J;
^^
Lti EL
!SLQU^
BJCER
KBD SEQ VCO-1
FO !N
kbd'seq
VCO-2 -L
INPUT LEVEL
^CD VCF-1
IFO IN EG !N
-' VCF-2
1VCO BLOCK
•The intervals of VCO-1 and VCO-2 can be applied
by means of DE TUNE (l) of the PITCH block.
•The saw-tooth waves of VCO-1 will be fed into
VCF-1.
Position the INPUT changing switch (3) to l\ ,
or rL of VCO-1.
Mix VCO-1 and VCO-2 by means of the INPUT
LEVEL controls (4) and (5).
2VCF BLOCK
•Set the INPUT changing switch (2) to VCO-2
K.
PATTERN IN WHICH TWO VCFs ARE USED IN
SERIES ®® ®
M-d.
'» V€/\
VCA-:
1VCF BLOCK
•Position the FILTER switch®of VCF-2 to VCF
-1 HP.
•When VCF-2 is set to either LP, or BP, and the
CUT OFF FRQ (2) is set to afrequency lower
than that of VCF-1's CUT OFF FRQ (3), some-
times sounds will not be produced.
The controls of the respective blocks, even in
the case any block of the 2systems is arranged in
series or in parallel, is to be carried out in amanner
similar to that carried out for the VCO-2 -> VCF-2
-* VCA-2 Pattern described on Page 17. When you
reach the stage where you can understand, by
referring to the block diagram, what kind of posi-
tions the controls and switches of the panel occupy
in the overall signal flow, then you will no doubt
be able to discover agreater number of patterns.
Try to get an understanding of the function of
each control by actually producing sounds and
adjusting the control with your own hands, while
confirming the difference in sounds with your own
ears.
©

OPERATION SEQUENCE
(T) ®
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:
Q:g; Q-, Q-Q-fa:
r,mtk
7(8
QJ DlWMOWQQft
®®
rH'-M
®
SEQUENCER PERFORMANCE
1The sequencer is ablock that automaticaUy
generates control voltages that are equivalent to
the keyboard's KEY VOLT and TRIGGER. Accord-
ingly, when using the sequencer, sound making is
to be carried out in the same manner as carried out
for the keyboard.
2If it is your first experience with asequencer,
we suggest that you adopt the Basic Setting described
on Page 7for the setting.
3Set the SEQ/KBD switch ®or (2) of the VCO-I
BLOCK or VCO-2 BLOCK to the SEQ side.
=
3r
=KEY
'ZZ BOARD
=Pn'CH
KBD SEQ
EiCER
LFO !N
KBD SEC
VCO-2
EL
1'>E
—fe
^- f.l_
1
VCF-1 l[
i
1iN
M
•» -* VCF-2b
Position the KBD/SEQ/EXT switches (3), (4) and
(5) of the EG to the SEQ side. When you have
started from Basic Setting, set EG3 ©alone to the
SEQ side and raise the SUSTAIN LEVEL ®up to
"10".
With the sequencer's CLOCK/MANUAL switch
(7) set to the CLOCK side, depress the START/
STOP button ®.This will cause automatic per-
formance to start.
•The STEP switch (9) is provided for the purpose
of determining the number of steps for the
sequencer.
•When the KBD/SEQ/EXT switches (3), ®and
(5) of the EGs are positioned to the KBD side,
the sequencer will perform automatic performance
only for the duration the keyboard is being
depressed.
•The speed of automatic performance is changed
by using the CLOCK SPEED @.
•The intervals of the respective steps are set
by means of PITCHES 1~8.
•When akey is depressed while the NORMAL/
KBD switch (12) is positioned toward the KBD
side, the interval of the last key that has been depr-
essed will be read into PITCH 1, and PITCHES 2
~8will follow PITCH 1.
HOW TO MATCH THE INTERVALS OF EACH
STEP
•Set the NORMAL/KBD switch ®to the NOR-
MAL side.
•Tuning may be facilitated by setting the HOLD/
EG switch of the VCA-2 toward the HOLD side.
•Tuning will be easier when crude sounds (sounds
not yet subjected to volume, or tone control) are
used.
•Set the sequencer to manual step operation. By
depressing the START/STOP button with the
CLOCK/MANUAL switch (7) positioned to the
MANUAL side, match the pitches of the intervals
of the keyboard with those of the sequencer, ad-
vancing one step each.
•Position the CLOCK/MANUAL switch (7) to the
CLOCK side. Now, automatic performance with
accurately set intervals can be enjoyed, by merely
depressing the START/STOP button.
When you have finished setting the intervals of the
sequencer, the next step will be to make sounds.
•If the HOLD/EG switch of VCA-2 is positioned
toward the HOLD side, bring it back to the EG
side.
®

TROUBLE SHOOTING
£
Sounds that have
been set are not heard.
Set to the basic
setting shown on page 7.
Do sounds come out?
Are the controls of the
amplifier normal?
NO SOUND
During operation, sounds
have ceased to come out.
1
During performance, sounds have
suddently ceased to come out.
Restore setting to the basic
setting shown on page 7.
Has the Synthesizer -> Amplifier
^Speaker connections been
properly executed?
(i
±
Is there any disconnected power
cord, or connection cord of the
amplifier, or synthesizer?
£
After thoroughly checking each item, if
ation still cannot be remedied, please
matter to your nearest YAMAHA servi
the situ- ^
'efer the J
ce shop. J
OPERATES BUT NOT IN
ANORMAL MANNER.
r
Faint sounds (Volume
will not increase).
Sounds come out but
are not normal. 1
Other controls do not work.
Are the VOLUME controls of
the synthesizer and amplifier
properly set?
If sounds have been normal at the
basic setting shown on page 7,
then the trouble is due to the
misoperation of controls.
Are the amplifier's sensitivity and
output large enough?
Is setting of the EG selected by
VGA normal?
When SL Is "0", only small
sounds will be heard if AT
and DT are too small.
Alarge change in volume is
observed at the position to
which CUT OFF FRQ
control is set.
As the controls of the EG are
correlated, setting is to be
carried out with the function
of each switch kept in mind.
After setting the ILand AL of the
EG selected by VCF, a click will
be heard when AT and DT are "0".