Technical information: Yamaha
FX/FS series Electone organs

This information was gathered through observation and by examining the Yamaha service manuals in scanned PDF format. It may be incomplete or incorrect.

Page contents

PCB descriptions
Connector pinouts
Keyboard scanning
Analog inputs
Control panel buttons/levers
Model comparison

PCB Descriptions

FS-20/30/100/200FX-1FX-10/20, FS-50/70/300/500

If you open up the organ you will notice several different circuit boards, some in a metal bracket, some on standoffs and some attached to the undersides of the manuals. Each circuit board has its own name and modular function. Here are the relevant ones for the MIDI module:

CKD

Location: Mounted in the metal bracket, closest to the front of the organ.
Functions: System clock generator, keyboard scan driver.
Connectors:

C1 (26-pin IDC, top left): Solo manual (FS-70/500, FX-1/20)
C2 (34-pin IDC, top left center, green): Upper manual
C3 (34-pin IDC, top left center, black): Lower manual
C4 (20-pin IDC, top right): Pedal keyboard
C5 (3-pin, top right): Pitch control knob

SC

Location: Mounted in the metal bracket, just behind the CKD board.
Functions: System controller (CPU, RAM and ROM).
Connectors:

C1 (40-pin IDC, top left): MDR-1 interface; has 13-bit address/8-bit data bus
C2 (16-pin IDC, top left center): Control panel buttons, sliders, LEDs and drawbars; also carries +5V power
C3 (30-pin IDC, top left center, black): Memory pack via DRE board, 12-bit address, 8-bit data
C4 (10-pin, top right): Analog inputs - aftertouch and expression pedal
C5 (5-pin, bottom right): Battery back-up for the configuration RAM

DRE

Location: Mounted vertically on standoffs in front of the metal bracket.
Functions: Distribution driver for control panel I/O, over/under voltage protection for memory pack.
Connectors:

C1 (10-pin): Foot switch, knee switch, pedal dynamic control, celeste status
C2 (8-pin): Tremolo, chorus
C3 (5-pin): RCI, RCII
C4 (8-pin, not placed): dynamic control for all keyboards
CN1 (16-pin IDC, black, by itself): Control panel I/O from SC board
CN2 (16-pin IDC, black): Panel 1-1
CN3 (16-pin IDC, gray): Uppermost control panel
CN4 (16-pin IDC, green): Panel 4-1
CN5 (10-pin IDC): Memory pack
CN6 (20-pin IDC): Memory pack
CN7 (30-pin IDC): Memory pack I/O from SC board
CN8 (2-pin, white): +5V power input (square pin/black wire is ground)

CKDS

Location: Mounted in the metal bracket, in the middle of the right-hand stack.
Functions: System clock generator, keyboard scan driver.
Connectors:

CN1 (26-pin IDC): Solo manual (FS-70/500, FX-1/20)
CN2 (34-pin IDC): Upper manual
CN3 (34-pin IDC): Lower manual
CN4 (20-pin IDC): Pedal keyboard
CN5 (30-pin IDC): Memory pack, 12-bit address, 8-bit data
CN6 (16-pin IDC): Control panel panel buttons, sliders, LEDs and drawbars; also carries +5V power
C1 (10-pin): Pitch control knob, etc.

SCS

Location: Mounted in the metal bracket, in the back of the right-hand stack.
Functions: System controller (CPU, RAM and ROM).
Connectors:

CN1 (40-pin IDC): MDR-1 interface; has 13-bit address/8-bit data bus
C1 (3-pin): Battery back-up for the configuration RAM
C2 (10-pin): Analog inputs - aftertouch and expression pedal

DRE

Location: Mounted vertically on standoffs in front of the metal bracket.
Functions: Distribution driver for control panel I/O, over/under voltage protection for memory pack.
Connectors:

C1 (10-pin): Foot switch, knee switch, celeste status
C2 (8-pin): Tremolo, chorus
C3 (5-pin): RCI, RCII
C4 (8-pin): dynamic control for all keyboards
CN1 (16-pin IDC, black, by itself): Control panel I/O from CKDS board
CN2 (16-pin IDC, black): Panel 1-1
CN3 (16-pin IDC, gray): Uppermost control panel
CN4 (16-pin IDC, green): Panel 4-1
CN5 (10-pin IDC): Memory pack
CN6 (20-pin IDC): Memory pack
CN7 (30-pin IDC): Memory pack I/O from CKDS board via PAC board
CN8 (2-pin, white): +5V power input (square pin/black wire is ground)

SC

Location: Mounted in the metal bracket, at the back.
Functions: System controller (CPU, RAM and ROM).
Connectors:

CN1 (40-pin IDC): MDR-1 interface; has 13-bit address/8-bit data bus
C1 (7-pin): Analog inputs - aftertouch and expression pedal
C2 (3-pin): Battery back-up for the configuration RAM
C3 (12-pin): Control panel buttons, sliders, LEDs; also carries +5V power
C4 (14-pin, FS-30/200): Preset board buttons, LEDs and drawbars; also carries +5V power

OP

Location: Mounted in the metal bracket, at the front.
Functions: Operator (combination, rhythm), keyboard scan driver.
Connectors:

CN1 (20-pin IDC): Pedal keyboard
CN2 (34-pin IDC): Lower manual
CN3 (34-pin IDC): Upper manual
C1 (5-pin): Knee and foot switches

Connector pinouts

Keyboard ribbon cables

Type: 20, 26 or 34-pin IDC
Connectors (Solo manual, 26-pin): CKD:C1/CKDS:CN1, Solo:CN1
Connectors (Upper manual, 34-pin): CKD:C2/CKDS:CN2/OP:CN3, Upper:CN1
Connectors (Lower manual, 34-pin): CKD:C3/CKDS:CN3/OP:CN2, Lower:CN1
Connectors (Pedal, 20-pin): CKD:C4/CKDS:CN4/OP:CN1, Pedal:CN1
Pin 1 position: Lower left when looking at the male header pins from the mating side with the polarizing key down.

Solo manual:

2	C#	D#	F	G	A	B	VSS	VSS	VSS	VSS	VSS	VSS	VSS	26
1	CL	D	E	F#	G#	A#	C	U4	U3	U2	D2	D3	D4	25

Upper/lower manuals:

2	C#	D#	F	G	A	B	VSS	VSS	VSS	VSS	VSS	VSS	VSS	VSS	VSS	VSS	VSS	34
1	CL	D	E	F#	G#	A#	C	U4*	U3	U2	U1	U0	D0	D1	D2	D3	D4*	33

Pedal:

2	C#	D#	F	G	A	B	VSS	VSS	VSS	VSS	20
1	CL	D	E	F#	G#	A#	C	D1*	D0	VSS	19

CL .. C: Send lines for matrix scanning. These pins map to the different pitches in an octave.
U0 .. U4: Return lines for upper (key-off) contacts, octaves 0 (lowest) through 4 (highest).
D0 .. D4: Return lines for lower (key-on) contacts, octaves 0 (lowest) through 4 (highest).

*Note: Pins D4,U4 on the lower and upper manuals and D1 on the pedal are unconnected (floating) on the FS-20/30/100/200 models.

**Note: The FS-50/70/300/500 models use the same key layout as the FX series, but omit octave 1 in the pedal, octave 4 in the lower manual and all but high C in octave 0 of the upper manual.

The send lines on the key scanner driver board are source/sink drivers.
The orientation of the key switch diodes allows current flow between the send and return line sets only when a send line is driven low and a key is pressed.
The return lines are pulled up to +5V on the key scanner driver board.

Control panel ribbon cables

FS-20/30/100/200FX-1/10/20, FS-50/70/300/500

Type: 16-pin IDC
Connectors (Master cable): SC:C2/SCS:CN2, DRE:CN1
Connectors (Left side and preset board): DRE:CN2, PN11:CN1, PN31:CN1
Connectors (Right side): DRE:CN3, PN41:CN1
Connectors (Upper panel): DRE:CN5, RER0:CN1
Pin 1 position: Lower left when looking at the male header pins from the mating side with the polarizing key down.

Master cable:

2	VSS	SDi	TAC1	C1	TDi	/IC	RSQ	+5V (SC)	16
1	VSS	SDO	TB	TAC0	C0	SYW	–	+5V (SC)	15

Divisions 1 and 2 (left side and preset board):

2	VSS	ØM	C0	SDA	–	TAC1	TDi	+5V	16
1	VSS	MA	C1	SDO	SDB	TB	TAC0	+5V	15

Division 3 (Right side):

2	VSS	VSS	MA	C1	SDB	+5V	+5V	+5V	16
1	VSS	VSS	VSS	ØM	C0	SDC	+5V	+5V	15

Division 4 (Upper panel):

2	VSS	ØM	C1	C0	SDC	SDD	–	+5V	16
1	VSS	ØM	C1	C0	SDC	SDD	–	+5V	15

SDO: Serial loop data out (from SC/CKDS, eventually loops through shift registers back to SDi)
SDi: Serial loop data in (toward SC/CKDS)
SDA .. SDD: Serial loop data between divisions.
TB: Preset drawbar initializing pulse, from SC/CKDS
TAC0, TAC1: Preset drawbar control signals, from SC/CKDS (only TAC1 is used).
C0, C1: Serial loop control signals, from SC/CKDS
TDi: Preset drawbar return data, from PSB
SYW/ØM: 50kHz serial clock
/IC: Initial Clear. Goes high 0.75 second after organ is powered on.
RSQ Digital mute control
MA Slider motor enable signal

On the master cable, the return data lines SDi and TDi are pulled up to +5V on the SC/CKDS board, while the send data lines are pulled up to +5V on the DRE board.
When the /IC line is driven low, the C0 and MA signals to the different divisions are forced low and the C1 signal is forced high.
The SDA signal has no connection on the DRE board, but is used to connect the serial data loop from panel PN31 (upper manual, left side) to PN11 (lower manual, left side).
The SDD signal connects the serial data loop from Division 4 to the two I/O drivers IC1 and IC2 on the DRE board. IC2's output is then connected to the master cable SDi line.

Type: 12- and 14-pin inline
Connector (Control panel): SC:C3
Connector (Preset board): SC:C4
Pin 1 position: Toward the backplane connector on the SC board.

Control panel cable:

1	VSS	/BS	Si	–	–	SDO	VSS	VSS	+5V	+5V	ØPN	GLE	12

Preset board (FS-30/200):

1	VSS	VSS	TVDL	TVCL	TVCO	TVDI	SDI	SO	VSS	VSS	+5V	+5V	ØPN	GLE	14

/BS: Break switch - contacts VSS when "Break" button is pressed; routed to keyboard scan as upper:CL3
SDO: Control panel serial loop data out (from SC, eventually loops through shift registers back to Si)
Si: Control panel serial loop data in (toward SC)
SO: Preset button serial loop data out (from SC, buffered directly from Si signal; eventually loops through shift registers back to SDI)
SDI: Preset button serial loop data in (toward SC)
ØPN: 50kHz serial clock
GLE: Control panel and preset button shift/latch selection (0=shift, 1=load inputs/latch outputs)
TVCL: Preset drawbar channel load, from SC (0=shift, 1=latch outputs)
TVCO: Preset drawbar serial control data, from SC (4 bits indicate which of the 11 channels to drive)
TVDL: Preset drawbar data load, from SC (0=shift, 1=load inputs)
TVDI: Preset drawbar serial return data, from PN3

The return data lines Si, SDI and TVDI are pulled down to ground on the SC board, while the /BS line is pulled up to +5V.

Keyboard scanning

Description

The Yamaha FS/FX-series Electones have three or four keyboards including the pedal, with a total of 111, 147, 148 or 184 keys, depending on the model. Each of the manual keys contains a diode and a double-throw switch. Velocity sensing is achieved by measuring the time between the upper contact opening and the lower contact closing.
Each pedal key contains a diode and a single-throw switch (normally open), and therefore is not sensitive to velocity.

The organ scans the keyboard at a variable rate, up to 12,000 times per second using a 13×28 matrix. 13 send lines map to the distinct pitches in an octave (C# to C, with an extra low C for the first octave on each keyboard). 28 return lines are linked to the different octaves on the keyboards, 15 for the key-down contacts – 3 solo octaves, 5 upper, 5 lower and 2 pedal – and 13 for the key-up contacts (the pedal has only key-down contacts).

Electrical Details

The 13 send lines are used as sink drivers (two 3:8 active-low demultiplexers for the FS-20/30/100/200, or a chain of 13 D-flip-flops for all other models). The key switch diodes are oriented with the cathodes toward the outputs, preventing current flow when the output is driven high.
At each scan cycle, the lines are driven low one at a time. Most models drive low C first, then C#, D, and so on up to high C. The FS-20/30/100/200 models drive the pitches in a different order: D, F#, A#, C#, F, A, CL, E, G#, C, D# G, B

The 28 return lines are pulled to +5V on the CKD/CKDS/OP board (4.7kΩ to VDD) and drop low when a key switch connects them to an active sink driver. The sink current is less than 1mA per return line, and since there is a diode between the return line and the sink driver, I would expect the low-level voltage to be somewhere between 0.4V and 0.6V.

Most of the models in this family share the same 13-line driver bus for all keyboards. The FX-1, on the other hand, has two independent scanning systems: one handles only the upper manual, and the other handles the solo manual, the lower manual and the pedal.

Diodes on the CKD/CKDS/OP board simulate closed key-up contacts for low C on all octaves except the lowest on each keyboard.
Additionally, the foot switch, knee switch and break buttons on the FS-20/30/100/200 are connected to the CL signal for octaves 1-3 on the upper manual.

Timing Details

A nominal 133kHz or 156kHz clock (scaled from the 4.8MHz system clock) drives the scanning process. This clock is variable, linked to the pitch control knob, observed to tune the frequency ±1%. As the organist tunes the pitch upwards, the scan frequency increases.

At each clock pulse, the controller may or may not advance to the next send line. If all keys attached to the send line are in the resting position, there is no delay. However, if any key is found to be either partially or fully depressed, the controller delays one or more clock periods after advancing to the next line while it processes the keypress. After the last send line (high C), the controller advances directly back to the first (low C); there is a line driven at all times, and never are two lines driven simultaneously.

On at least the FX-20, the delay is unpredictable so the MIDI adapter has to monitor multiple send lines, but always aligned to the 156kHz clock. With a little clever coding, you could do it with as few as five lines monitored; I opted for monitoring 12 lines after the failure of my first revision, which only listened to the low C.

Analog inputs

There are four analog signals from the console that the organ responds to:

Solo manual aftertouch
Upper manual aftertouch
Lower manual aftertouch: The three aftertouch signals range from 0 (no pressure) to +3V (maximum pressure), driven by op amps.
Expression pedal: I'm not sure what drives the expression pedal, but its signal also ranges from 0 (heel down) to +3V (toe down).

The analog inputs are grouped at the 10-pin connector on the SC/SCS board. The expression pedal signal passes through this connector, in one wire, out another, on its way to the bar graph display on the control panel.

Control panel buttons/levers

The control panel is essentially a large shift register transceiver driven by a 50kHz clock. The protocol is compatible with the PIC's SPI module. The SDO and SDi signals contain the data being shifted into the register at one end and out the other. SDO is for outputs, such as LEDs and motor control, and SDi is for inputs such as buttons and sliders.
The C0 and C1 signals control the mode (truth table below).

The control panel uses positive logic; logic 0 is equivalent to 0V and logic 1 is +5V. Though the transitions occur on the falling clock edge, it is most simple and reliable to read the panel data (SDO, SDi) on the rising edge.

C0	C1	SYW	Action
0	0	*	No operation
0	1	\	Load shift register from inputs; first input bit appears at SDi
1	0	\	Shift data (SDO => panel => SDi)
1	1	\	Write shift register to outputs, then shift (SDO => panel => SDi)

The preset drawbars are also driven by the same 50kHz clock, but in a parallel input-only channel. The TDi line is similar to SDi, carrying the input signals from the shift register. The TAC0 and TAC1 lines are like C0 and C1, except that TAC0 is not connected to anything. The TAC1 line is the sole mode control signal (partial truth table below).

The drawbars are arranged in 14 pairs, with 8 bits of data per pair. To advance to the next pair, the TAC1 signal is pulsed. To begin the first pair, the TAC1 and TB signals are pulsed simultaneously.

TAC1	SYW	Action
Pulse	\	Advance to the next pair of drawbars
0	\	Shift data (panel => TDi)

My observation of the signals is as follows:

TAC1 rests at +5V.
TAC1 goes low near a falling clock edge. Shortly thereafter, TDi rises.
The clock rises and falls once.
TB and TDi are driven high while the clock is low.
The clock rises and falls once. Shortly thereafter, TDi falls.
Near the TDi transition, TB falls while TAC1 remains high.
The clock rises and falls twice.
TAC1 falls.
Eight clock pulses (rise and fall) occur. The shift register shifts. TDi transitions occur shortly after each falling edge.
After the eighth falling clock edge, TDi goes low. Additional clocks occur while the controller processes the data.
After a falling clock edge, TAC1 is driven high.
The clock rises and falls once.
Steps 8-12 repeat until all drawbar pairs are read, plus one guard (15 bytes in all for the FX-20).

Though theoretically possible to transfer bits in and out simultaneously, the controller does only one function at a time. The cycle seems to be: Read panel => Write panel => Read drawbars.

While reading the panel, the controller repeatedly writes the byte 0x02 via SDO, and reads one extra byte after the data transmission completes.

While writing the panel, the repeated value 0x02 appears on the SDi line. No extra data is written at the end of the transmission.

After reading the 14 preset drawbars, the controller reads a 15th byte, which turns out to have the value 0x77.

Data order

FS-20/30/100/200FS-50/70/300/500FX-1FX-10/20

Bit# (FS-20/100)	Bit# (FS-30/200)	Panel	Section	IC	Control	Type	Notes
–	0	PN3	Preset Board	IC2	–	–	(FS-30/200)
–	1				On	Button+LED	(FS-30/200)
–	2				Record	Button	(FS-30/200)
–	3				Blank	Button	(FS-30/200)
–	4			IC3	End	Button	(FS-30/200)
–	5				Back	Button	(FS-30/200)
–	6				Forward	Button	(FS-30/200)
–	7				Program Set	Button	(FS-30/200)
0	8	PN1	Break Variation	IC9	–	–
1	9				3	Button+LED
2	10				2	Button+LED
3	11				1	Button+LED
4	12		Foot Switch	IC8	–	–
5	13				Break Vari.	Button+LED
6	14				Rhythm Stop	Button+LED
7	15				Glide	Button+LED
8	16			IC7	–	–
9	17				–	–
10	18				Start	Button+LED
11	19				Synchro Start	Button+LED
12..15	20..23		(Misc.)	IC6	Manual Balance	Slider
16	24		Effect: Symphonic	IC5	Upper Combi./Orches.	Button+LED
17	25		Effect: Symphonic		Lower Combi./Orches.	Button+LED
18	26		Effect: Tremolo		Upper Combi./Orches.	Button+LED
19	27		Effect: Tremolo		Lower Combi./Orches.	Button+LED
20	28		Effect	IC4	Tremolo	Button+LED
21	29				Chorus	Button+LED
22	30				Symphonic	Button+LED
23	31				Celeste	Button+LED
24..27	32..35		Vibrato	IC3	Speed	Slider	MSb first
28..31	36..39			IC2	Depth	Slider	MSb first
32..35	40..43			IC1	Delay	Slider	MSb first
36..39	44..47	CP6	Pedals: Custom Voices	IC8	Volume	Slider
40	48			IC7	Electric Bass 3	Button+LED
41	49				Contra Bass 2	Button+LED
42	50				Electric Bass 2	Button+LED
43	51				Contra Bass 1	Button+LED
44	52			IC6	Electric Bass 1	Button+LED
45	53				Bass 2	Button+LED
46	54				Tuba	Button+LED
47	55				Bass 1	Button+LED
48	56		Registration Memory	IC5	C.	Button+LED
49	57				Memory 5	Button+LED
50	58				Preset 4	Button+LED
51	59				Memory 4	Button+LED
52	60			IC4	Preset 3	Button+LED
53	61				Memory 3	Button+LED
54	62				Preset 2	Button+LED
55	63				Memory 2	Button+LED
56	64			IC3	Preset 1	Button+LED
57	65				Memory 1	Button+LED
58	66				D.	Button+LED
59	67				M.	Button+LED
60	68		Ensemble	IC2	–	–
61	69				–	–
62	70				Lower Custom	Button+LED
63	71				Upper Custom	Button+LED
64	72			IC1	Lower Special	Button+LED
65	73				Upper Special	Button+LED
66	74				Lower Combi./Orch.	Button+LED
67	75				Upper Combi./Orch.	Button+LED
68..71	–	CP5	Lower Keyboard: Special Presets	IC9	Volume	Slider	(FS-20/100)
72	–			IC8	Touch Tone	Slider
73	–				Solid Guitar	Button+LED
74	–				Rhythmic Chord	Button+LED
75	–				Jazz Guitar	Button+LED
76	–			IC7	Phaser	Button+LED
77	–				Harps.	Button+LED
78	–				–	–
79	–				–	–
80	–			IC6	Brass	Button+LED
81	–				Electric Piano	Button+LED
82	–				Stri.	Button+LED
83	–				Piano	Button+LED
–	76..79			IC10	Volume	Slider	(FS-30/200)
–	80			IC9	Touch Tone	Slider
–	81				Jazz Guitar	Button+LED
–	82				Rhythmic Chord	Button+LED
–	83				Acous. Guitar	Button+LED
–	84			IC8	Phaser	Button+LED
–	85				Harp	Button+LED
–	86				Brass	Button+LED
–	87				Harps.	Button+LED
–	88			IC7	Strings	Button+LED
–	89				Electric Piano	Button+LED
–	90				Solid Guitar	Button+LED
–	91				Piano	Button+LED
84..87	–		Lower Keyboard: Orchestra	IC5	Volume	Slider	(FS-20/100)
88	–			IC4	–	–
89	–				–	–
90	–				Touch Tone	Button+LED
91	–				Brass 2	Button+LED
92	–			IC3	Preset Vibrato	Button+LED
93	–				Brass 1	Button+LED
94	–				Vocal	Button+LED
95	–				Stri. 2	Button+LED
96	–			IC2	Reed	Button+LED
97	–			IC2	Stri. 1	Button+LED
–	92..95			IC6	Volume	Slider	(FS-30/200)
–	96			IC5	–	–
–	97				–	–
–	98				Touch Tone	Button+LED
–	99				Reed	Button+LED
–	100			IC4	Preset Vibrato	Button+LED
–	101				Brass 2	Button+LED
–	102				Cosmic	Button+LED
–	103				Brass 1	Button+LED
–	104			IC3	Vocal 2	Button+LED
–	105				Stri. 2	Button+LED
–	106				Vocal 1	Button+LED
–	107				Stri. 1	Button+LED
98	–		Lower Keyboard: Combination	IC2	Preset 6	Button+LED	(FS-20/100)
99	–			IC2	Preset 3	Button+LED
100	–			IC1	Preset 5	Button+LED
101	–				Preset 2	Button+LED
102	–				Preset 4	Button+LED
103	–				Preset 1	Button+LED
–	108			IC2	Preset 4	Button+LED	(FS-30/200)
–	109				Memo. 3	Button+LED
–	110				Preset 3	Button+LED
–	111				Memo. 2	Button+LED
–	112			IC1	Preset 2	Button+LED
–	113				Memo. 1	Button+LED
–	114				Preset 1	Button+LED
–	115				Combi. Lever	Button+LED
104..110	116..122	TEM	Tempo	IC6	Tempo dial counter	Encoder	LSb first
111	123			IC6	Tempo dial direction	Encoder
112..119	124..131			IC3	LED display	7-segment driver	Assuming 8 bits control data
120	132	CP3	Auto bass chord	IC12	Pedal Memo.	Button+LED
121	133				Lower Memo.	Button+LED
122	134				Multi Bass 3	Button+LED
123	135				Custom A.B.C.	Button+LED
124	136			IC11	Multi Bass 2	Button+LED
125	137				Fingered Chord	Button+LED
126	138				Multi Bass 1	Button+LED
127	139				Single Fing. Chord	Button+LED
128	140			IC10	Multi Bass Norm.	Button+LED
129	141				Norm.	Button+LED
130	142				–	–
131	143				–	–
132..135	144..147		Auto Arpeggio	IC9	Volume	Slider
136	148			IC8	Harp	Button+LED
137	149				Harps.	Button+LED
138	150				Piano	Button+LED
139	151				Stri.	Button+LED
140	152			IC7	8	Button+LED
141	153				4	Button+LED
142	154				7	Button+LED
143	155				3	Button+LED
144	156			IC6	6	Button+LED
145	157				2	Button+LED
146	158				5	Button+LED
147	159				1	Button+LED
148..151	160..163		Upper/Lower Custom Voices	IC5	Volume	Slider
152	164			IC4	–	–
153	165				–	–
154	166				Touch Tone	Button+LED
155	167				Violin	Button+LED
156	168			IC3	Touch Vibr.	Button+LED
157	169				Trombone	Button+LED
158	170				Preset Vibr.	Button+LED
159	171				Trumpet	Button+LED
160	172			IC2	Vibr. Lever	Button+LED
161	173				Saxophone	Button+LED
162	174				Cosmic 2	Button+LED
163	175				Clarinet	Button+LED
164	176			IC1	Cosmic 1	Button+LED
165	177				Oboe	Button+LED
166	178				Jazz Guitar	Button+LED
167	179				Flute	Button+LED
168..171	180..183	CP2	Upper Keyboard: Special Presets	FS-20/100: IC9 FS-30/200: IC10	Volume	Slider
172	184			FS-20/100: IC8 FS-30/200: IC9	Touch Tone	Button+LED
173	185				Banjo	Button+LED
174	186				Cosmic	Button+LED
175	187				Mandolin	Button+LED
176	188			FS-20/100: IC7 FS-30/200: IC8	Brass 2	Button+LED
177	189				Marimba	Button+LED
178	190				Brass 1	Button+LED
179	191				Vibraphone	Button+LED
180	192			FS-20/100: IC6 FS-30/200: IC7	Stri.	Button+LED
181	193				Harps.	Button+LED
182	194				Jazz Guitar	Button+LED
183	195				Piano	Button+LED
184..187	–		Upper Keyboard: Orchestra	IC5	Volume	Slider	(FS-20/100)
188	–			IC4	Touch Tone	Button+LED
189	–				Brass 2	Button+LED
190	–				Preset Vibr.	Button+LED
191	–				Brass 1	Button+LED
192	–			IC3	Reed 2	Button+LED
193	–				Stri. 2	Button+LED
194	–				Reed 1	Button+LED
195	–				Stri. 1	Button+LED
–	196..199			IC6	Volume	Slider	(FS-30/200)
–	200			IC5	Touch Tone	Button+LED
–	201				Brass 2	Button+LED
–	202				Preset Vibr.	Button+LED
–	203				Brass 1	Button+LED
–	204			IC4	Vocal	Button+LED
–	205				Stri. 3	Button+LED
–	206				Reed 2	Button+LED
–	207				Stri. 2	Button+LED
–	208			IC3	Reed 1	Button+LED
–	209			IC3	Stri. 1	Button+LED
196	–		Upper Keyboard: Combination	IC2	Preset 8	Button+LED	(FS-20/100)
197	–				Preset 4	Button+LED
198	–				Preset 7	Button+LED
199	–				Preset 3	Button+LED
200	–			IC1	Preset 6	Button+LED
201	–				Preset 2	Button+LED
202	–				Preset 5	Button+LED
203	–				Preset 1	Button+LED
–	210			IC2	Preset 4	Button+LED	(FS-30/200)
–	211			IC2	Memo. 3	Button+LED
–	212			IC2	Preset 3	Button+LED
–	213				Memo. 2	Button+LED
–	214				Preset 2	Button+LED
–	215				Memo. 1	Button+LED
–	216			IC1	–	–
–	217				–	–
–	218				Preset 1	Button+LED
–	219				Combi. Lever	Button+LED
204	220	CP1	Auto Rhythm	IC5	4	Button+LED
205	221				2	Button+LED
206	222				3	Button+LED
207	223				1	Button+LED
208	224			IC4	16 Beat	Button+LED
209	225				8 Beat 2	Button+LED
210	226				Disco	Button+LED
211	227				8 Beat 1	Button+LED
212	228			IC3	Latin Rock	Button+LED
213	229				Slow Rock	Button+LED
214	230				Samba	Button+LED
215	231				Bounc.	Button+LED
216	232			IC2	Bossa-Nova	Button+LED
217	233				Swing	Button+LED
218	234				Latin 2	Button+LED
219	235				Ballad	Button+LED
220	236			IC1	Latin 1	Button+LED
221	237				Waltz	Button+LED
222	238				Tango	Button+LED
223	239				March	Button+LED
224..227	240..243	CP4		IC3	Volume	Slider
228..231	244..247			IC3	Balance	Slider
232	–			IC2	16 Bar	Button+LED	(FS-20/100)
233	–				4 Bar	Button+LED
234	–				8 Bar	Button+LED
235	–				Norm	Button+LED
236	–			IC1	–	–
237	–				–	–
238	–				–	–
239	–				–	–
–	248			IC2	Pro. 4	Button+LED	(FS-30/200)
–	249				16 Bar	Button+LED
–	250				Pro. 3	Button+LED
–	251				8 Bar	Button+LED
–	252			IC1	Pro. 2	Button+LED
–	253				4 Bar	Button+LED
–	254				Pro. 1	Button+LED
–	255				Norm	Button+LED
240	256	PN4	Knee Lever	IC6	Lower Sustain	Button+LED
241	257				Upper Sustain	Button+LED
242	258				Play Assist	Button+LED
243	259		Response Fast		Combi.	Button+LED
244	260		Play Assist	IC5	Upper Special	Button+LED
245	261				Melo. on Chord 2	Button+LED
246	262				Upper Combi./Orches.	Button+LED
247	263				Melo. on Chord 1	Button+LED
248	264			IC4	Key Set	Button+LED
249	265				Counter Melo.	Button+LED
250	266				Volume Soft	Button+LED
251	267				Duet	Button+LED
252..255	268..271		Sustain	IC5	Upper	Slider
256..259	272..275			IC4	Lower	Slider
260..263	276..279			IC3	Pedal	Slider

Bit# (FS-50/300)	Bit# (FS-70/500)	Panel	Section	IC	Control	Type	Notes
0	0	DRE	(Internal, misc.)	IC2	Pedal dynamic range control	Out
1	1				Knee switch	In
2	2				Foot switch	In
3	3				Celeste control	Out
4	4				Tone cabinet Orchestra control	Out
5	5				Tone cabinet Combination control	Out
6	6				Chorus control	Out
7	7				Tremolo control	Out
8	8			IC1	–	–
9	9				–	–
10	10				Registration pack write protect	In
11	11				Phasor RC II control	Out
12	12				Registration pack present	In
13	13				Phasor RC I control	Out
14	14				–	–
15	15				Slider motor control	Out
16	16	PN4	Vibrato	IC9	Preset	Button+LED
17	17				Player	Button+LED
18	18				Lever	Button+LED
19	19				Set	Button
20	20			IC8	Memory ready	LED
21	21				Error	LED
22	22				–	–
23	23				Pedals	LED
24	24				FS-50/300: – FS-70/500: Lower	LED
25	25				FS-50/300: Lower FS-70/500: U./L.	LED
26	26				FS-50/300: U./L. FS-70/500: Upper	LED
27	27				FS-50/300: Upper FS-70/500: Solo	LED
28	28		Registration pack	IC7	Write	Button+LED
29	29				Confirm	Button+LED
30	30				Read	Button+LED
31	31				–	–
32	32		Vibrato	IC6	–	–
33..35	33..35			IC6	Speed	Lever	MSb first
36	36			IC5	–	–
37..39	37..39			IC5	Depth	Lever	MSb first
40	40			IC4	–	–
41..43	41..43			IC4	Delay	Lever	MSb first
44	44			IC3	–	–
45..47	45..47			IC3	Touch Depth	Lever	MSb first
48	48		Play Assist	IC2	Key Set	Button+LED
49	49				Counter Melo.	Button+LED
50	50				Upper Special	Button+LED
51	51				Duet	Button+LED
52	52			IC1	Upper Orch.	Button+LED
53	53				Melo. on Chord 2	Button+LED
54	54				Upper Combi.	Button+LED
55	55				Melo. on Chord 1	Button+LED
56	56	CPNN	Auto bass chord	IC3	Pedal Memo.	Button+LED
57	57				Lower Memo.	Button+LED
58	58				Multi Bass 3	Button+LED
59	59				Custom A.B.C.	Button+LED
60	60			IC2	Multi Bass 2	Button+LED
61	61				Fingered Chord	Button+LED
62	62				Multi Bass 1	Button+LED
63	63				Single Fing. Chord	Button+LED
64	64			IC1	Multi Bass Norm.	Button+LED
65	65				Norm.	Button+LED
66	66				–	–
67	67				–	–
68..71	68..71	DM5	Sustain	IC5	Pedal	Slider
72..75	72..75			IC4	Lower	Slider
76..79	76..79			IC3	Upper	Slider
80	80	CPNM		IC1	Pedal Sus.	Button+LED
81	81				Play Assis. (Knee)	Button+LED
82	82				Lower Sus. (Knee)	Button+LED
83	83				Upper Sus. (Knee)	Button+LED
84..87	84..87	DM5	Pedals: Custom voices	IC2	Volume	Slider
88..91	88..91	DM5		IC1	Brilliance	Slider
92	92	CPNL		IC2	Cosmic	Button+LED
93	93				Tuba	Button+LED
94	94				Electric Bass 3	Button+LED
95	95				Contra Bass 3	Button+LED
96	96			IC1	Electric Bass 2	Button+LED
97	97				Contra Bass 2	Button+LED
98	98				Electric Bass 1	Button+LED
99	99				Contra Bass 1	Button+LED
100..103	100..103	DM1H	Pedals: Combination	IC1	Volume	Slider
104	104	CPNK		IC3	Preset 2	Button+LED
105	105				Memo.	Button+LED
106	106				Preset 1	Button+LED
107	107				Combi. Lever	Button+LED
108	108		Ensemble	IC2	Lower Cust.	Button+LED
109	109				Upper Cust.	Button+LED
110	110				Lower Special	Button+LED
111	111				Upper Special	Button+LED
112	112			IC1	Lower Orch.	Button+LED
113	113				Upper Orch.	Button+LED
114	114				Lower Combi.	Button+LED
115	115				Upper Combi.	Button+LED
116..119	116..119	DM1G	Lower Keyboard: Special Presets	IC1	Volume	Slider
120	120	CPNJ		IC3	Touch Tone	Button+LED
121	121				Acous. Guitar	Button+LED
122	122				Cosmic	Button+LED
123	123				Harp	Button+LED
124	124			IC2	Brass 2	Button+LED
125	125				Harps.	Button+LED
126	126				Brass 1	Button+LED
127	127				Electric Piano	Button+LED
128	128			IC1	Jazz Guitar	Button+LED
129	129				Piano	Button+LED
130	130
131	131
132..135	132..135	DM1F	Lower Keyboard: Orchestra	IC1	Volume	Slider
136	136	CPNI		IC3	Touch Tone	Button+LED
137	137				Reed	Button+LED
138	138				Preset Vibr.	Button+LED
139	139				Brass 2	Button+LED
140	140			IC2	Spice	Button+LED
141	141				Brass 1	Button+LED
142	142				Vocal 2	Button+LED
143	143				Stri. 2	Button+LED
144	144			IC1	Vocal 1	Button+LED
145	145				Stri. 1	Button+LED
146	146				–	–
147	147				–	–
148..151	148..151	DM1E	Lower Keyboard: Combination	IC1	Volume	Slider
152	152	CPNH		IC2	Preset 4	Button+LED
153	153				Memo. 3	Button+LED
154	154				Preset 3	Button+LED
155	155				Memo. 2	Button+LED
156	156			IC1	Preset 2	Button+LED
157	157				Memo. 1	Button+LED
158	158				Preset 1	Button+LED
159	159				Combi. Lever	Button+LED
160..167	160..167	TEMP	Tempo	IC7	Tempo, 4th digit	7-segment+dot	g-e-f-d-a-c-b-.
168..174	168..174			IC6	Tempo, 3rd digit	7-segment	g-e-f-d-a-c-b
175	175			IC6	–	–
176..182	176..182			IC5	Tempo, 2nd digit	7-segment	g-e-f-d-a-c-b
183	183			IC5	–	–
184..190	184..190			IC4	Tempo, 1st digit	7-segment	g-e-f-d-a-c-b
191	191			IC4	Bar/Beat	LED
192	192			IC3	Tempo dial direction	Encoder
193..199	193..199			IC3	Tempo dial counter	Encoder	MSb first
200..203	200..203		Auto Rhythm	IC2	Volume	Slider
204..207	204..207			IC1	Balance	Slider
208	208	CPNG		IC2	Pro. 4	Button+LED
209	209				16 Bar	Button+LED
210	210				Pro. 3	Button+LED
211	211				8 Bar	Button+LED
212	212			IC1	Pro. 2	Button+LED
213	213				4 Bar	Button+LED
214	214				Pro. 1	Button+LED
215	215				Norm	Button+LED
216..219	216..219	DM3	Rhythmic Chord 2	IC3	Volume	Slider
220	220	CPNF2		IC1	Phase	Button+LED
221	221				Jazz Guitar	Button+LED
222	222				Solid Guitar	Button+LED
223	223				Brass	Button+LED
224..217	224..227	DM3	Rhythmic Chord 1	IC2	Volume	Slider
228	228	CPNF		IC1	Phase	Button+LED
229	229				Jazz Guitar	Button+LED
230	230				Solid Guitar	Button+LED
231	231				Piano	Button+LED
232..235	232..235	DM3	Auto Arpeggio	IC1	Volume	Slider
236	236	CPNE		IC3	Harp	Button+LED
237	237				Harps.	Button+LED
238	238				Stri.	Button+LED
239	239				Piano	Button+LED
240	240			IC2	8	Button+LED
241	241				4	Button+LED
242	242				7	Button+LED
243	243				3	Button+LED
244	244			IC1	6	Button+LED
245	245				2	Button+LED
246	246				5	Button+LED
247	247				1	Button+LED
248..251	248..251	DM1D	Upper/Lower Custom Voices	IC1	Volume	Slider
252	252	CPND		IC4	Touch Tone	Button+LED
253	253				Violin	Button+LED
254	254				Touch Vibr.	Button+LED
255	255				Trombone	Button+LED
256	256			IC3	Preset Vibr.	Button+LED
257	257				Trumpet	Button+LED
258	258				Cosmic 3	Button+LED
259	259				Saxophone	Button+LED
260	260			IC2	Cosmic 2	Button+LED
261	261				Clarinet	Button+LED
262	262				Cosmic 1	Button+LED
263	263				Oboe	Button+LED
264	264			IC1	Jazz Guitar	Button+LED
265	265				Flute	Button+LED
266	266				–	–
267	267				–	–
268..271	268..271	DM1C	Upper Keyboard Special Presets	IC1	Volume	Slider
272	272	CPNC		IC3	Touch Tone	Button+LED
273	273				Mand.	Button+LED
274	274				Cosmic	Button+LED
275	275				Marimba	Button+LED
276	276			IC2	Brass 2	Button+LED
277	277				Vibraphone	Button+LED
278	278				Brass 1	Button+LED
279	279				Celeste	Button+LED
280	280			IC1	Jazz Guitar	Button+LED
281	281				Harps.	Button+LED
282	282				Banjo	Button+LED
283	283				Piano	Button+LED
284..287	284..287	DM1B	Upper Keyboard Orchestra	IC1	Volume	Slider
288	288	CPNB		IC3	Touch Tone	Button+LED
289	289				Reed 1	Button+LED
290	290				Preset Vibr.	Button+LED
291	291				Brass 2	Button+LED
292	292			IC2	Spice 2	Button+LED
293	293				Brass 1	Button+LED
294	294				Spice 1	Button+LED
295	295				Stri. 3	Button+LED
296	296			IC1	Vocal	Button+LED
297	297				Stri. 2	Button+LED
298	298				Reed 2	Button+LED
299	299				Stri. 1	Button+LED
300..303	300..303	DM1A	Upper Keyboard Combination	IC1	Volume	Slider
304	304	CPNA		IC7	Preset 4	Button+LED
305	305				Memo. 3	Button+LED
306	306				Preset 3	Button+LED
307	307				Memo. 2	Button+LED
308	308			IC6	Preset 2	Button+LED
309	309				Memo. 1	Button+LED
310	310				Preset 1	Button+LED
311	311				Combi. Lever	Button+LED
312	312		Auto Rhythm	IC5	4	Button+LED
313	313				2	Button+LED
314	314				3	Button+LED
315	315				1	Button+LED
316	316			IC4	16 Beat	Button+LED
317	317				8 Beat 2	Button+LED
318	318				Disco	Button+LED
319	319				8 Beat 1	Button+LED
320	320			IC3	Latin Rock	Button+LED
321	321				Slow Rock	Button+LED
322	322				Samba	Button+LED
323	323				Bounc.	Button+LED
324	324			IC2	Bossa-Nova	Button+LED
325	325				Swing	Button+LED
326	326				Latin 2	Button+LED
327	327				Ballad	Button+LED
328	328			IC1	Latin 1	Button+LED
329	329				Waltz	Button+LED
330	330				Tango	Button+LED
331	331				March	Button+LED
–	332..335	DM3S	Solo Keyboard	IC3	Slide Control	Slider	(FS-70/500)
–	336..339			IC2	Volume	Slider	(FS-70/500)
–	340..343			IC1	Brilliance	Slider	(FS-70/500)
–	344	PNS3		IC6	Touch Tone	Button+LED	(FS-70/500)
–	345				Up	Button+LED	(FS-70/500)
–	346				Touch Vibr.	Button+LED	(FS-70/500)
–	347				Norm	Button+LED	(FS-70/500)
–	348			IC5	Preset Vibr.	Button+LED	(FS-70/500)
–	349				Down	Button+LED	(FS-70/500)
–	350				Cosmic 2	Button+LED	(FS-70/500)
–	351				Trumpet 2	Button+LED	(FS-70/500)
–	352			IC4	Cosmic 1	Button+LED	(FS-70/500)
–	353				Trumpet 1	Button+LED	(FS-70/500)
–	354				Harmonica	Button+LED	(FS-70/500)
–	355				Saxophone	Button+LED	(FS-70/500)
–	356			IC3	Jazz Guitar	Button+LED	(FS-70/500)
–	357				Clarinet	Button+LED	(FS-70/500)
–	358				Violin	Button+LED	(FS-70/500)
–	359				Oboe	Button+LED	(FS-70/500)
–	360			IC2	Trombone	Button+LED	(FS-70/500)
–	361				Flute	Button+LED	(FS-70/500)
–	362				Horn	Button+LED	(FS-70/500)
–	363				Piccolo	Button+LED	(FS-70/500)
–	364			IC1	–	–	(FS-70/500)
–	365				–	–	(FS-70/500)
–	366				Solo to Upper	Button+LED	(FS-70/500)
–	367				–	–	(FS-70/500)
–	368..371	DM1I		IC1	Detune	Slider	(FS-70/500)
332	372	PN1	Break Variation	IC6	3	Button+LED
333	373				2	Button+LED
334	374				1	Button+LED
335	375				–	–
336	376		(Rhythm control)	IC5	Break	Button+LED
337	377				Start	Button+LED
338	378				Synchro Start	Button+LED
339	379				–	–
340	380		Foot Switch	IC4	Break Vari.	Button+LED
341	381				Rhythm Stop	Button+LED
342	382				Glide	Button+LED
343	383		(Misc.)		Slider Drive	Toggle switch
344..347	384..387		(Misc.)	IC1	Manual Balance	Slider
348	388		Effect: Tremolo	IC3	Lower Orches.	Button+LED
349	389				Upper Orches.	Button+LED
350	390				Lower Combi.	Button+LED
351	391				Upper Combi.	Button+LED
352	392		Effect: Symphonic	IC2	Lower Orches.	Button+LED
353	393				Upper Orches.	Button+LED
354	394				Lower Combi.	Button+LED
355	395				Upper Combi.	Button+LED
356	396		Effect	IC1	Tremolo	Button+LED
357	397				Symphonic	Button+LED
358	398				Chorus	Button+LED
359	399				Celeste	Button+LED
360	400	PSW	(Preset panel)	IC5	8	Button+LED
361	401				7	Button+LED
362	402				6	Button+LED
363	403				5	Button+LED
364	404			IC2	4	Button+LED
365	405				3	Button+LED
366	406				2	Button+LED
367	407				1	Button+LED
368	408			IC1	R	Button+LED
369	409				D	Button+LED
370	410				C	Button+LED
371	411				M	Button+LED
372	412	PN3	Preset board	IC2	–	–
373	413				–	–
374	414				–	–
375	415				Forward	Button
376	416				Back	Button
377	417				End	Button
378	418				Blank	Button
379	419				Record	Button
380	420			IC1	On	Button+LED
381	421				Timbre Vari.	Button+LED
382	422				Response Fast	Button+LED
383	423				Program Set	Button

Bit#	Panel	Section	IC	Control	Type	Notes
0	DRE	(Internal, misc.)	IC2	Slider motor control	Out
1				Knee switch	In
2				Foot switch	In
3				Celeste control	Out
4				Tone cabinet Orchestra control	Out
5				Tane cabinet Combination control	Out
6				Chorus control	Out
7				Tremolo control	Out
8			IC1	Solo dynamic range control	Out
9				Lower dynamic range control	Out
10				Upper dynamic range control	Out
11				Pedal dynamic range control	Out
12				Phasor RC II control	Out
13				Phasor RC I control	Out
14				Registration pack write protect	In
15				Registration pack present	In
16	PN4	Vibrato	IC7	Preset	Button+LED
17				Player	Button+LED
18				Slider	Button+LED
19				Set	Button+LED
20		Registration pack	IC6	Memory ready	LED
21				Error	LED
22				–	–
23		Vibrato		Pedal	LED
24				Lower orchestra	LED
25				Upper/lower custom voices	LED
26				Upper orchestra	LED
27				Solo	LED
28		Registration pack	IC5	Write	Button+LED
29				Confirm	Button+LED
30				Read	Button+LED
31				–	–
32		Vibrato	IC4	–	–
33..35			IC4	Speed	Lever	MSb first
36			IC3	–	–
37..39			IC3	Depth	Lever	MSb first
40			IC2	–	–
41..43			IC2	Delay	Lever	MSb first
44			IC1	–	–
45..47			IC1	Touch Depth	Lever	MSb first
48	CPNN	Auto bass chord	IC2	Multi Bass 3	Button+LED
49				Pedal Memo.	Button+LED
50				Multi Bass 2	Button+LED
51				Lower Memo.	Button+LED
52			IC1	Multi Bass 1	Button+LED
53				Custom A.B.C.	Button+LED
54				Multi Bass Norm.	Button+LED
55				Norm.	Button+LED
56..59	DM5	Sustain	IC5	Pedal	Slider
60..63			IC4	Lower	Slider
64..67			IC3	Upper	Slider
68	CPNM		IC1	Pedal Sus.	Button+LED
69				–	–
70				Lower Sus. (Knee)	Button+LED
71				Upper Sus. (Knee)	Button+LED
72..75	DM5	Pedals: Custom voices	IC2	Volume	Slider
76..79	DM5		IC1	Brilliance	Slider
80	CPNL		IC3	Cosmic	Button+LED
81				Tuba	Button+LED
82				Vocal	Button+LED
83				Contra Bass 4	Button+LED
84			IC2	Electric Bass 3	Button+LED
85				Contra Bass 3	Button+LED
86				Electric Bass 2	Button+LED
87				Contra Bass 2	Button+LED
88			IC1	Electric Bass 1	Button+LED
89				Contra Bass 1	Button+LED
90				–	–
91				–	–
92..95	DM1H	Pedals: Combination	IC1	Volume	Slider
96	CPNK		IC4	Preset 2	Button+LED
97				Memo.	Button+LED
98				Preset 1	Button+LED
99				Combi. Lever	Button+LED
100		Ensemble	IC3	Lower Cust.	Button+LED
101				Upper Cust.	Button+LED
102				Lower Special	Button+LED
103				Upper Special	Button+LED
104			IC2	Lower Orch.	Button+LED
105				Upper Orch.	Button+LED
106				Lower Combi.	Button+LED
107				Upper Combi.	Button+LED
108			IC1	Upper to Lower	Button+LED
109				Lower to Upper	Button+LED
110				–	–
111				–	–
112..115	DM1G	Lower Keyboard: Special Presets	IC1	Volume	Slider
116	CPNJ		IC3	Touch Tone	Button+LED
117				Jazz Guitar	Button+LED
118				Cosmic 3	Button+LED
119				Acous. Guitar	Button+LED
120			IC2	Cosmic 2	Button+LED
121				Harp	Button+LED
122				Cosmic 1	Button+LED
123				Harps.	Button+LED
124			IC1	Brass 2	Button+LED
125				Electric Piano	Button+LED
126				Brass 1	Button+LED
127				Piano	Button+LED
128..131	DM1F	Lower Keyboard: Orchestra	IC1	Volume	Slider
132	CPNI		IC4	Touch Tone	Button+LED
133				Reed	Button+LED
134				Preset Vibr.	Button+LED
135				Brass 3	Button+LED
136			IC3	Cosmic	Button+LED
137				Brass 2	Button+LED
138				Spice 2	Button+LED
139				Brass 1	Button+LED
140			IC2	Spice 1	Button+LED
141				Stri. 3	Button+LED
142				Vocal 2	Button+LED
143				Stri. 2	Button+LED
144			IC1	Vocal 1	Button+LED
145				Stri. 1	Button+LED
146				–	–
147				–	–
148..151	DM1E	Lower Keyboard: Combination	IC1	Volume	Slider
152	CPNH		IC2	Preset 4	Button+LED
153				Memo. 3	Button+LED
154				Preset 3	Button+LED
155				Memo. 2	Button+LED
156			IC1	Preset 2	Button+LED
157				Memo. 1	Button+LED
158				Preset 1	Button+LED
159				Combi. Lever	Button+LED
160..167	TEMP	Tempo	IC7	Tempo, 4th digit	7-segment+dot	g-e-f-d-a-c-b-.
168..174			IC6	Tempo, 3rd digit	7-segment	g-e-f-d-a-c-b
175			IC6	–	–
176..182			IC5	Tempo, 2nd digit	7-segment	g-e-f-d-a-c-b
183			IC5	–	–
184..190			IC4	Tempo, 1st digit	7-segment	g-e-f-d-a-c-b
191			IC4	Beat LED	LED
192			IC3	Tempo dial direction	Encoder
193..199			IC3	Tempo dial counter	Encoder	MSb first
200..203		Auto Rhythm	IC2	Volume	Slider
204..207			IC1	Balance	Slider
208	CPNG		IC2	Pro. 4	Button+LED
209				16 Bar	Button+LED
210				Pro. 3	Button+LED
211				8 Bar	Button+LED
212			IC1	Pro. 2	Button+LED
213				4 Bar	Button+LED
214				Pro. 1	Button+LED
215				Norm	Button+LED
216..219	DM3	Rhythmic Chord 2	IC3	Volume	Slider
220	CPNF2		IC1	Phase	Button+LED
221				Jazz Guitar	Button+LED
222				Solid Guitar	Button+LED
223				Brass	Button+LED
224..227	DM3	Rhythmic Chord 1	IC2	Volume	Slider
228	CPNF		IC1	Phase	Button+LED
229				Jazz Guitar	Button+LED
230				Solid Guitar	Button+LED
231				Piano	Button+LED
232..235	DM3	Auto Arpeggio	IC1	Volume	Slider
236	CPNE		IC3	Harp	Button+LED
237				Harps.	Button+LED
238				Stri.	Button+LED
239				Piano	Button+LED
240			IC2	8	Button+LED
241				4	Button+LED
242				7	Button+LED
243				3	Button+LED
244			IC1	6	Button+LED
245				2	Button+LED
246				5	Button+LED
247				1	Button+LED
248..251	DM1D	Upper/Lower Custom Voices	IC1	Volume	Slider
252	CPND		IC5	Touch Tone	Button+LED
253				Hawai. Guitar	Button+LED
254				Touch Vibr.	Button+LED
255				Jazz Guitar	Button+LED
256			IC4	Preset Vibr.	Button+LED
257				Violin	Button+LED
258				Cosmic 4	Button+LED
259				Trombone	Button+LED
260			IC3	Cosmic 3	Button+LED
261				Trumpet	Button+LED
262				Cosmic 2	Button+LED
263				Saxophone	Button+LED
264			IC2	Cosmic 1	Button+LED
265				Clarinet	Button+LED
266				Vocal	Button+LED
267				Oboe	Button+LED
268			IC1	Bass Guitar	Button+LED
269				Flute	Button+LED
270				–	–
271				–	–
272..275	DM1C	Upper Keyboard Special Presets	IC1	Volume	Slider
276	CPNC		IC3	Touch Tone	Button+LED
277				Mand.	Button+LED
278				Cosmic	Button+LED
279				Marimba	Button+LED
280			IC2	Brass 2	Button+LED
281				Vibraphone	Button+LED
282				Brass 1	Button+LED
283				Celeste	Button+LED
284			IC1	Jazz Guitar	Button+LED
285				Harps.	Button+LED
286				Banjo	Button+LED
287				Piano	Button+LED
288..291	DM1B	Upper Keyboard Orchestra	IC1	Volume	Slider
292	CPNB		IC4	Touch Tone	Button+LED
293				Brass 3	Button+LED
294				Preset Vibr.	Button+LED
295				Brass 2	Button+LED
296			IC3	Spice 2	Button+LED
297				Brass 1	Button+LED
298				Spice 1	Button+LED
299				Stri. 4	Button+LED
300			IC2	Vocal 1	Button+LED
301				Stri. 3	Button+LED
302				Reed 2	Button+LED
303				Stri. 2	Button+LED
304			IC1	Reed 1	Button+LED
305				Stri. 1	Button+LED
306				–	–
307				–	–
308..311	DM1A	Upper Keyboard Combination	IC1	Volume	Slider
312	CPNA		IC7	Preset 4	Button+LED
313				Memo. 3	Button+LED
314				Preset 3	Button+LED
315				Memo. 2	Button+LED
316			IC6	Preset 2	Button+LED
317				Memo. 1	Button+LED
318				Preset 1	Button+LED
319				Combi. Lever	Button+LED
320		Auto Rhythm	IC5	4	Button+LED
321				2	Button+LED
322				3	Button+LED
323				1	Button+LED
324			IC4	16 Beat	Button+LED
325				8 Beat 2	Button+LED
326				Disco	Button+LED
327				8 Beat 1	Button+LED
328			IC3	Latin Rock	Button+LED
329				Slow Rock	Button+LED
330				Samba	Button+LED
331				Bounc.	Button+LED
332			IC2	Bossa-Nova	Button+LED
333				Swing	Button+LED
334				Latin 2	Button+LED
335				Ballad	Button+LED
336			IC1	Latin 1	Button+LED
337				Waltz	Button+LED
338				Tango	Button+LED
339				March	Button+LED
340..343	DM3S	Solo Keyboard	IC3	Slide Control	Slider
344..347			IC2	Volume	Slider
348..351			IC1	Brilliance	Slider
352	PNS		IC6	Touch Tone	Button+LED
353				Up	Button+LED
354				Touch Vibr.	Button+LED
355				Norm	Button+LED
356			IC5	Preset Vibr.	Button+LED
357				Down	Button+LED
358				Cosmic 2	Button+LED
359				Horn	Button+LED
360			IC4	Cosmic 1	Button+LED
361				Trumpet 2	Button+LED
362				Vocal	Button+LED
363				Trumpet 1	Button+LED
364			IC3	Harmonica	Button+LED
365				Saxophone	Button+LED
366				Jazz Guitar	Button+LED
367				Clarinet	Button+LED
368			IC2	Cello	Button+LED
369				Oboe	Button+LED
370				Violin	Button+LED
371				Flute	Button+LED
372			IC1	Trombone	Button+LED
373				Piccolo	Button+LED
374				–	–
375				Solo to Upper	Button+LED
376..379	DM1P		IC1	Detune	Slider
380	PN1	Break Variation	IC3	3	Button+LED
381				2	Button+LED
382				1	Button+LED
383				–	–
384		(Rhythm control)	IC2	Break	Button+LED
385				Start	Button+LED
386				Synchro Start	Button+LED
387				–	–
388		Foot Switch	IC2	Break Vari.	Button+LED
389				Rhythm Stop	Button+LED
390				Glide	Button+LED
391		(Misc.)		Slider Drive	Toggle switch
392..395	DM2P		IC2	Manual Balance	Slider
396..399	DM2P		IC1	Reverb	Slider
400	PN3	Effect: Symphonic	IC3	Lower Orches.	Button+LED
401				Upper Orches.	Button+LED
402				Lower Combi.	Button+LED
403				Upper Combi.	Button+LED
404		Effect: Tremolo	IC2	Lower Orches.	Button+LED
405				Upper Orches.	Button+LED
406				Lower Combi.	Button+LED
407				Upper Combi.	Button+LED
408		Effect	IC1	Tremolo	Button+LED
409				Chorus	Button+LED
410				Symphonic	Button+LED
411				Celeste	Button+LED
412	PSW	Preset panel	IC8	Pedal dynamic range control	Button+LED
413				Lower dynamic range control	Button+LED
414				Upper dynamic range control	Button+LED
415				Solo dynamic range control	Button+LED
416			IC5	8	Button+LED
417				7	Button+LED
418				6	Button+LED
419				5	Button+LED
420			IC2	4	Button+LED
421				3	Button+LED
422				2	Button+LED
423				1	Button+LED
424			IC1	R	Button+LED
425				D	Button+LED
426				C	Button+LED
427				M	Button+LED
428	PN3	Preset board	IC2	–	–
429				–	–
430				–	–
431				Forward	Button
432				Back	Button
433				End	Button
434				Blank	Button
435				Record	Button
436			IC1	On	Button+LED
437				Timbre Vari.	Button+LED
438				Response Fast	Button+LED
439				Program Set	Button

Bit# (FX-10)	Bit# (FX-20)	Panel	Section	IC	Control	Type	Notes
0	0	DRE	(Internal, misc.)	IC2	Pedal dynamic range control	Out
1	1				Knee switch	In
2	2				Foot switch	In
3	3				Celeste control	Out
4	4				Tone cabinet Orchestra control	Out
5	5				Tone cabinet Combination control	Out
6	6				Chorus control	Out
7	7				Tremolo control	Out
8	8			IC1	–	–
9	9				–	–
10	10				Registration pack write protect	In
11	11				Phasor RC II control	Out
12	12				Registration pack present	In
13	13				Phasor RC I control	Out
14	14				–	–
15	15				Slider motor control	Out
16	16	PN41	Registration pack	IC2	–	–
17	17				Write	Button+LED
18	18				Confirm	Button+LED
19	19				Read	Button+LED
20	20			IC1	–	–
21	21				Memory ready	LED
22	22				Error	LED
23	23				–	–
24	24	CPNN	Auto bass chord	IC3	Pedal Memo.	Button+LED
25	25				Lower Memo.	Button+LED
26	26				Multi Bass 3	Button+LED
27	27				Custom A.B.C.	Button+LED
28	28			IC2	Multi Bass 2	Button+LED
29	29				Fingered Chord	Button+LED
30	30				Multi Bass 1	Button+LED
31	31				Single Fing. Chord	Button+LED
32	32			IC1	Multi Bass Norm.	Button+LED
33	33				Norm.	Button+LED
34	34				–	–
35	35				–	–
36..39	36..39	DM5	Sustain	IC5	Pedal	Slider
40..43	40..43			IC4	Lower	Slider
44..47	44..47			IC3	Upper	Slider
48	48	CPNM		IC1	Pedal Sus.	Button+LED
49	49				Play Assis.	Button+LED
50	50				Lower Sus. (Knee)	Button+LED
51	51				Upper Sus. (Knee)	Button+LED
52..55	52..55	DM5	Pedals: Custom voices	IC2	Volume	Slider
56..59	56..59	DM5		IC1	Brilliance	Slider
60	60	CPNL		IC3	Cosmic	Button+LED
61	61				Tuba	Button+LED
62	62				Vocal	Button+LED
63	63				Contra Bass 4	Button+LED
64	64			IC2	Electric Bass 3	Button+LED
65	65				Contra Bass 3	Button+LED
66	66				Electric Bass 2	Button+LED
67	67				Contra Bass 2	Button+LED
68	68			IC1	Electric Bass 1	Button+LED
69	69				Contra Bass 1	Button+LED
70	70				–	–
71	71				–	–
72..75	72..75	DM1H	Pedals: Combination	IC1	Volume	Slider
76	76	CPNK		IC3	Preset 2	Button+LED
77	77				Memo.	Button+LED
78	78				Preset 1	Button+LED
79	79				Combi. Lever	Button+LED
80	80		Ensemble	IC2	Lower Cust.	Button+LED
81	81				Upper Cust.	Button+LED
82	82				Lower Special	Button+LED
83	83				Upper Special	Button+LED
84	84			IC1	Lower Orch.	Button+LED
85	85				Upper Orch.	Button+LED
86	86				Lower Combi.	Button+LED
87	87				Upper Combi.	Button+LED
88..91	88..91	DM1G	Lower Keyboard: Special Presets	IC1	Volume	Slider
92	92	CPNJ		IC3	Touch Tone	Button+LED
93	93				Jazz Guitar	Button+LED
94	94				Cosmic 3	Button+LED
95	95				Acous. Guitar	Button+LED
96	96			IC2	Cosmic 2	Button+LED
97	97				Harp	Button+LED
98	98				Cosmic 1	Button+LED
99	99				Harps.	Button+LED
100	100			IC1	Brass 2	Button+LED
101	101				Electric Piano	Button+LED
102	102				Brass 1	Button+LED
103	103				Piano	Button+LED
104..107	104..107	DM1F	Lower Keyboard: Orchestra	IC1	Volume	Slider
108	108	CPNI		IC4	Touch Tone	Button+LED
109	109				Reed	Button+LED
110	110				Preset Vibr.	Button+LED
111	111				Brass 3	Button+LED
112	112			IC3	Cosmic	Button+LED
113	113				Brass 2	Button+LED
114	114				Spice 2	Button+LED
115	115				Brass 1	Button+LED
116	116			IC2	Spice 1	Button+LED
117	117				Stri. 3	Button+LED
118	118				Vocal 2	Button+LED
119	119				Stri. 2	Button+LED
120	120			IC1	Vocal 1	Button+LED
121	121				Stri. 1	Button+LED
122	122				–	–
123	123				–	–
124..127	124..127	DM1E	Lower Keyboard: Combination	IC1	Volume	Slider
128	128	CPNH		IC2	Preset 4	Button+LED
129	129				Memo. 3	Button+LED
130	130				Preset 3	Button+LED
131	131				Memo. 2	Button+LED
132	132			IC1	Preset 2	Button+LED
133	133				Memo. 1	Button+LED
134	134				Preset 1	Button+LED
135	135				Combi. Lever	Button+LED
136..143	136..143	TEMP	Tempo	IC7	Tempo, 4th digit	7-segment+dot	g-e-f-d-a-c-b-.
144..150	144..150			IC6	Tempo, 3rd digit	7-segment	g-e-f-d-a-c-b
151	151			IC6	–	–
152..158	152..158			IC5	Tempo, 2nd digit	7-segment	g-e-f-d-a-c-b
159	159			IC5	–	–
160..166	160..166			IC4	Tempo, 1st digit	7-segment	g-e-f-d-a-c-b
167	167			IC4	Bar/Beat	LED
168	168			IC3	Tempo dial direction	Encoder
169..175	169..175			IC3	Tempo dial counter	Encoder	MSb first
176..179	176..179		Auto Rhythm	IC2	Volume	Slider
180..183	180..183			IC1	Balance	Slider
184	184	CPNG		IC2	Pro. 4	Button+LED
185	185				16 Bar	Button+LED
186	186				Pro. 3	Button+LED
187	187				8 Bar	Button+LED
188	188			IC1	Pro. 2	Button+LED
189	189				4 Bar	Button+LED
190	190				Pro. 1	Button+LED
191	191				Norm	Button+LED
192	192	REL1/2	(Padding)	IC1	–	–
193	193				–	–
194	194				–	–
195	195				–	–
196	196	SPR	Play Assist	IC2	Counter Melo.	Button+LED
197	197				Duet	Button+LED
198	198				Melo. on Chord 2	Button+LED
199	199				Melo. on Chord 1	Button+LED
200	200			IC1	Upper Special	Button+LED
201	201				Upper Orch.	Button+LED
202	202				Upper Combi.	Button+LED
203	203				Key Set	Button+LED
204..207	204..207	DM3	Rhythmic Chord 2	IC3	Volume	Slider
208	208	CPNF2		IC1	Phase	Button+LED
209	209				Jazz Guitar	Button+LED
210	210				Solid Guitar	Button+LED
211	211				Brass	Button+LED
212..215	212..215	DM3	Rhythmic Chord 1	IC2	Volume	Slider
216	216	CPNF		IC1	Phase	Button+LED
217	217				Jazz Guitar	Button+LED
218	218				Solid Guitar	Button+LED
219	219				Piano	Button+LED
220..223	220..223	DM3	Auto Arpeggio	IC2	Volume	Slider
224	224	CPNE		IC3	Harp	Button+LED
225	225				Harps.	Button+LED
226	226				Stri.	Button+LED
227	227				Piano	Button+LED
228	228			IC2	8	Button+LED
229	229				4	Button+LED
230	230				7	Button+LED
231	231				3	Button+LED
232	232			IC1	6	Button+LED
233	233				2	Button+LED
234	234				5	Button+LED
235	235				1	Button+LED
236..239	236..239	DM1D	Upper/Lower Custom Voices	IC1	Volume	Slider
240	240	CPND		IC5	Touch Tone	Button+LED
241	241				Hawai. Guitar	Button+LED
242	242				Touch Vibr.	Button+LED
243	243				Jazz Guitar	Button+LED
244	244			IC4	Preset Vibr.	Button+LED
245	245				Violin	Button+LED
246	246				Cosmic 4	Button+LED
247	247				Trombone	Button+LED
248	248			IC3	Cosmic 3	Button+LED
249	249				Trumpet	Button+LED
250	250				Cosmic 2	Button+LED
251	251				Saxophone	Button+LED
252	252			IC2	Cosmic 1	Button+LED
253	253				Clarinet	Button+LED
254	254				Vocal	Button+LED
255	255				Oboe	Button+LED
256	256			IC1	Bass Guitar	Button+LED
257	257				Flute	Button+LED
258	258				–	–
259	259				–	–
260..263	260..263	DM1C	Upper Keyboard Special Presets	IC1	Volume	Slider
264	264	CPNC		IC3	Touch Tone	Button+LED
265	265				Mand.	Button+LED
266	266				Cosmic	Button+LED
267	267				Marimba	Button+LED
268	268			IC2	Brass 2	Button+LED
269	269				Vibraphone	Button+LED
270	270				Brass 1	Button+LED
271	271				Celeste	Button+LED
272	272			IC1	Jazz Guitar	Button+LED
273	273				Harps.	Button+LED
274	274				Banjo	Button+LED
275	275				Piano	Button+LED
276..279	276..279	DM1B	Upper Keyboard Orchestra	IC1	Volume	Slider
280	280	CPNB		IC4	Touch Tone	Button+LED
281	281				Brass 3	Button+LED
282	282				Preset Vibr.	Button+LED
283	283				Brass 2	Button+LED
284	284			IC3	Spice 2	Button+LED
285	285				Brass 1	Button+LED
286	286				Spice 1	Button+LED
287	287				Stri. 4	Button+LED
288	288			IC2	Vocal 1	Button+LED
289	289				Stri. 3	Button+LED
290	290				Reed 2	Button+LED
291	291				Stri. 2	Button+LED
292	292			IC1	Reed 1	Button+LED
293	293				Stri. 1	Button+LED
294	294				–	–
295	295				–	–
296..299	296..299	DM1A	Upper Keyboard Combination	IC1	Volume	Slider
300	300	CPNA		IC7	Preset 4	Button+LED
301	301				Memo. 3	Button+LED
302	302				Preset 3	Button+LED
303	303				Memo. 2	Button+LED
304	304			IC6	Preset 2	Button+LED
305	305				Memo. 1	Button+LED
306	306				Preset 1	Button+LED
307	307				Combi. Lever	Button+LED
308	308		Auto Rhythm	IC5	4	Button+LED
309	309				2	Button+LED
310	310				3	Button+LED
311	311				1	Button+LED
312	312			IC4	16 Beat	Button+LED
313	313				8 Beat 2	Button+LED
314	314				Disco	Button+LED
315	315				8 Beat 1	Button+LED
316	316			IC3	Latin Rock	Button+LED
317	317				Slow Rock	Button+LED
318	318				Samba	Button+LED
319	319				Bounc.	Button+LED
320	320			IC2	Bossa-Nova	Button+LED
321	321				Swing	Button+LED
322	322				Latin 2	Button+LED
323	323				Ballad	Button+LED
324	324			IC1	Latin 1	Button+LED
325	325				Waltz	Button+LED
326	326				Tango	Button+LED
327	327				March	Button+LED
–	328..331	DM3S	Solo Keyboard	IC3	Slide Control	Slider	(FX-20)
–	332..335			IC2	Volume	Slider	(FX-20)
–	336..339			IC1	Brilliance	Slider	(FX-20)
–	340	PNS1		IC6	Touch Tone	Button+LED	(FX-20)
–	341				Up	Button+LED	(FX-20)
–	342				Touch Vibr.	Button+LED	(FX-20)
–	343				Norm	Button+LED	(FX-20)
–	344			IC5	Preset Vibr.	Button+LED	(FX-20)
–	345				Down	Button+LED	(FX-20)
–	346				Cosmic 2	Button+LED	(FX-20)
–	347				Horn	Button+LED	(FX-20)
–	348			IC4	Cosmic 1	Button+LED	(FX-20)
–	349				Trumpet 2	Button+LED	(FX-20)
–	350				Vocal	Button+LED	(FX-20)
–	351				Trumpet 1	Button+LED	(FX-20)
–	352			IC3	Harmonica	Button+LED	(FX-20)
–	353				Saxophone	Button+LED	(FX-20)
–	354				Jazz Guitar	Button+LED	(FX-20)
–	355				Clarinet	Button+LED	(FX-20)
–	356			IC2	Cello	Button+LED	(FX-20)
–	357				Oboe	Button+LED	(FX-20)
–	358				Violin	Button+LED	(FX-20)
–	359				Flute	Button+LED	(FX-20)
–	360			IC1	Trombone	Button+LED	(FX-20)
–	361				Piccolo	Button+LED	(FX-20)
–	362				–	–	(FX-20)
–	363				Solo to Upper	Button+LED	(FX-20)
–	364..367	DM1I		IC1	Detune	Slider	(FX-20)
328	368	PN11	Break Variation	IC3	3	Button+LED
329	369				2	Button+LED
330	370				1	Button+LED
331	371				–	–
332	372		(Rhythm control)	IC2	Break	Button+LED
333	373				Start	Button+LED
334	374				Synchro Start	Button+LED
335	375				–	–
336	376		Foot Switch	IC2	Break Vari.	Button+LED
337	377				Rhythm Stop	Button+LED
338	378				Glide	Button+LED
339	379		(Misc.)		Slider Drive	Toggle switch
340..343	380..383	DM1J	(Misc.)	IC1	Manual Balance	Slider
344	384	PSW1	(Preset panel)	IC8	–	–
345	385				–	–
346	386				–	–
347	387				Pedal dynamic range control	Button+LED
348	388			IC5	8	Button+LED
349	389				7	Button+LED
350	390				6	Button+LED
351	391				5	Button+LED
352	392			IC2	4	Button+LED
353	393				3	Button+LED
354	394				2	Button+LED
355	395				1	Button+LED
356	396			IC1	R	Button+LED
357	397				D	Button+LED
358	398				C	Button+LED
359	399				M	Button+LED
360	400	PN31	Effect: Symphonic	IC3	Lower Orches.	Button+LED
361	401				Upper Orches.	Button+LED
362	402				Lower Combi.	Button+LED
363	403				Upper Combi.	Button+LED
364	404		Effect: Tremolo	IC2	Lower Orches.	Button+LED
365	405				Upper Orches.	Button+LED
366	406				Lower Combi.	Button+LED
367	407				Upper Combi.	Button+LED
368	408		Effect	IC1	Tremolo	Button+LED
369	409				Symphonic	Button+LED
370	410				Chorus	Button+LED
371	411				Celeste	Button+LED
372..375	412..415		DM1K	IC1	Reverb	Slider
376	416	PSB	Preset board	IC8	–	–
377	417				–	–
378	418				–	–
379	419				Forward	Button
380	420				Back	Button
381	421				End	Button
382	422				Blank	Button
383	423				Record	Button
384	424			IC7	On	Button+LED
385	425				Timbre Vari.	Button+LED
386	426				Response Fast	Button+LED
387	427				Program Set	Button
388	428			IC6	–	–
389	429				–	–
390	430				–	–
391	431				Pedals	LED
392	432				Lower	LED
393	433				U./L.	LED
394	434				Upper	LED
395	435				Solo	LED
396	436			IC5	Preset	Button+LED
397	437				Player	Button+LED
398	438				Lever	Button+LED
399	439				Set	Button
400	440			IC4	–	–
401..403	441..443			IC4	Speed	Lever	MSb first
404	444			IC3	–	–
405..407	445..447			IC3	Depth	Lever	MSb first
408	448			IC2	–	–
409..411	449..451			IC2	Delay	Lever	MSb first
412	452			IC1	–	–
413..415	453..455			IC1	Touch Depth	Lever	MSb first

Model comparison

	FS-20 FS-100	FS-30 FS-200	FS-50 FS-300	FS-70 FS-500	FX-1	FX-10	FX-20	Notes
Solo manual	–	–	–	–	3 octave	–	3 octave
Upper/lower manuals	4 octave	4 octave	4 octave	4 octave	5 octave	5 octave	5 octave
Pedals	1 octave	1 octave	1 octave	1 octave	2 octave	2 octave	2 octave	The FX series, except for the FX-3, have full-length radiating pedals.
Buttons	167	186 30a: 190	214	235	247	229	252
Sliders	16+1	16+1	19+4+1	23+4+1	24+4	20+4	24+4
Drawbars	0	15	17	17	27	27	27
Control loop bits	264 (33 bytes)?	280 (35 bytes)?	384 (48 bytes)	424 (53 bytes)	440 (55 bytes)	416 (52 bytes)	456 (57 bytes)	Does not include extra bits read by the controller.
Drawbar bytes	–	11	11	11	14	14	14	Does not include extra byte read by the controller.

2	C#	D#	F	G	A	B	VSS	VSS	VSS	VSS	VSS	VSS	VSS	VSS	VSS	VSS	VSS	34
1	CL	D	E	F#	G#	A#	C	U4*	U3	U2	U1	U0	D0	D1	D2	D3	D4*	33

2	C#	D#	F	G	A	B	VSS	VSS	VSS	VSS	VSS	VSS	VSS	VSS	VSS	VSS	VSS	34
1	CL	D	E	F#	G#	A#	C	U4*	U3	U2	U1	U0	D0	D1	D2	D3	D4*	33

Technical information: YamahaFX/FS series Electone organs