Yamaha S03 voice editor User manual

1.494K-479 K Printed in Japan ’01.02
20010301-69800
SERVICE MANUAL
SY 011550
MUSIC SYNTHESIZER
HAMAMATSU, JAPAN
CONTENTS
SPECIFICATIONS .............................................. 3/4
BLOCK DIAGRAM ........................... 5
PANEL LAYOUT ...................................... 6
CIRCUIT BOARD LAYOUT ................. 8
WIRING ............................................................... 9
DISASSEMBLY PROCEDURE ............................ 10
LSI PIN DESCRIPTION .............................. 15
IC BLOCK DIAGRAM ................................... 17
CIRCUIT BOARDS ......................................... 19
TEST PROGRAM ............................. 28/33
FACTORY SET .................................. 39
DISPLAY MESSAGES ............... 40
MIDI IMPLEMENTATION CHART ......................................... 41
PARTS LIST
OVERALL CIRCUIT DAIGRAM
This document is printed on chlorine free (ECF) paper with soy ink.

S03
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2
IMPOR TANT NOTICE
This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed
that basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and under-
stood by the users, and have therefore not been restated.
WARNING : Failure to follow appropriate service and safety procedures when servicing this product may result in per-
sonal injury, destruction of expensive components and failure of the product to perform as specified. For
these reasons, we advise all Yamaha product owners that all service required should be performed by an
authorized Yamaha Retailer or the appointed service representative.
IMPORTANT : This presentation or sale of this manual to any individual or firm does not constitute authorization certifi-
cation, recognition of any applicable technical capabilities, or establish a principal-agent relationship of
any form.
The data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and
service departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable
and changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to
exist, please contact the distributor’s Service Division.
WARNING : Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to
this bus.)
IMPORTANT : Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power
to the unit.
WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (Where
applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly
other entities) to cause cancer and/or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT
SO EVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose
eyes to solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling
food.
WARNING
Components having special characteristics are marked and must be replaced with parts having specification equal to those
originally installed.
LITHIUM BA TTERY HANDLING
This product uses a lithium battery for memory back-up.
WARNING : Lithium batteries are dangerous because they can be exploded by improper handling. Observe the following pre-
cautions when handling or replacing lithium batteries.
Leave lithium battery replacement to qualified service personnel.
Always replace with batteries of the same type.
When installing on the PC board by soldering, solder using the connection terminals provided on the battery cells.
Never solder directly to the cells. Perform the soldering as quickly as possible.
Never reverse the battery polarities when installing.
Do not short the batteries.
Do not attempt to recharge these batteries.
Do not disasemble the batteries.
Never heat batteries or throw them into fire.
ADVARSEL!
Lithiumbatteri-Eksplosionsfare ved fejlagtig handtering. Udskiftning ma kun ske med batteri af samme fabrikat og type. lever det brugte
batteri tilbage til leverandren.
VARNING
Explosionsfara vid felaktigt batteribyte.
Anvand samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren.
Kassera anvant batteri enligt fabrikantens instruktion.
VAROITUS
Paristo voi rajahtaa, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiiin.
Havita kaytetty paristo valmistajan ohjeiden mukaisesti.
The following information complies with Dutch official Gazette 1995. 45; ESSENTIALS OF ORDER ON THE COLLECTION OF BATTERIES.
• Please refer to the diassembly procedure for the removal of Back-up Battery.
• Leest u voor het verwijderen van de backup batterij deze beschrijving.

S03
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SPECIFICATIONS
KEYBOARD 61 keys with Initial Touch
TONE GENERATOR AWM2
POLYPHONY 64 notes
MULTI TIMBRE 16
VOICE Normal Voice Preset 128
User 128
XG 480
Drum Voice User 2
XG 20 (including 8 Original Voices)
MULTI User 32
EFFECT Reverb 11
Chorus 11
Variation 42
CONTROLS STANDBY/ON, HOST SELECT, VOLUME, Pitch Bend, Modulation, MULTI,
VOICE, DEMO, UTILITY, MIDI, EDIT/COMPARE, JOB, STORE, EXIT,
/ , / , PART (ELEMENT/KEY) –/+, MUTE, OCTAVE UP/
DOWN, INC/YES, DEC/NO, PRESET, USER, XG/GM, CATEGORY
SEARCH, Numeric Keypad, ENTER
CONNECTORS & TERMINALS PHONES (Stereo Phone), OUTPUT (Phone): L (MONO)/R, DC IN, FOOT
CONTROLLER, FOOT SWITCH, TO HOST, MIDI IN/OUT/THRU
DISPLAY LCD (Back Lit)
POWER SUPPLY Yamaha AC adaptor PA-3B (included)
POWER CONSUMPTION 7W (120V), 8W (230V)
MAXIMUM OUTPUT LEVEL OUTPUT: +9 ±2dbm (10k ohms), PHONES: +0 ±2dbm (33 ohms)
DIMENSIONS 976 (W) x 285 (D) x 87 (H) mm
WEIGHT 6kg

S03
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S03
5
28CA1-8817708
BLOCK DIAGRAM
VOLUME
S-Bus
+5V
STANDBY/ON
DAC
UPD63200
16M
FLASH
ROM
Program
8.4672MHz +
+3.3V
LCD
Driver
OUTPUT
L/MONO
JK002
JK003
JK001
SW001
JK009
JK005
JK004
JK006
SW002
JK007
JK008
OUTPUT
R
FOOT
CONTROLLER
DC-IN
FOOT
SWITCH
64M
ROM
Wave
AMP
IC013
(8P) IC016 (8P)
IC018
(16P)
IC013
(8P)
IC015 (5P)
IC017 (8P)
IC010 (3P)
IC009
(3P)
IC008 (16P)
IC030
(48P)
12
3
1
1
1
42
3
3
IC016
(8P)
AMP
LPF
MUTING
PHONES
TO HOST
HOST
SELECT
MIDI IN
MIDI OUT
LPF
REG
A/D PORT PAD0-2/PDT0-7
RESET
CMA1-20 CMD0-15
SMA0-21 SMD0-15
C-Bus
CMD8-15
PORT
PORT x2
REG
+9V
1M
SRAM
(Upper)
Work
CMA0-14 CMD8-15
CMA0-14 CMD0-7
MIDI THRU
FOOT
CONTROLLER
BATTERY
REG
1M
SRAM
(Lower)
Work
Master
Separate Mode
SWH00B
DSP
4M
DRAM
64M
ROM
Wave
SMA0-21 SMD0-15
BUS BUFFER
LCD
MW
PB
Back
up
SIO4
RS422/232C
TRANSCEIVER
RESET Slave
Single Mode
SWX00B
D/A Data
Wheel
Assembly
Pitch Bend
Modulation
MWPB
BATTERY A/D
A/D PORT
FOOT
CONTROLLER
A/D PORT
FC, PB, BAT, MW
DM
VOL LC SW
8MHz
1
TR1, 2, 3 +9A
313
75 75
11
6
DO0, WCLK, QCLK
IC002 (168P)
IC001 (168P)
IC012
(40P)
3HOST-IN
HOST-OUT
15
15 14 32
16
RXD1
TXD1 17 CMDD0-7
CN1
(6P)
CN1
(6P)
CN1 (15P)
CN4 (15P)
CN2
(3P)
CN6 (14P)
CN1 (14P)
CN3 (6P)
CN2
(3P)
X2
IC001
(80P)
LD001 (100P)
SEG1-40,
COM1-16
IC027 (20P)
HOST1, HOST2
FS
156,167
150
22
SMA0-21
DMA1-8
DMD0-15
1,127,154,155 RES, REQ, MKS_DATA, SCLK1
14-17
SMA0-15
CMA0-20
CMD0-15
9
X1
IC006
(56P) IC007 (56P) IC004
(32P) IC003 (32P) IC005 (48P)
8MHz
MKS3CPU
IC001 (40P)
CL1
CN1 (6P)
XI
Keyboard Assembly(16M KEY)
IC011
(14P)
IC023 IC025
(16P)
24
76

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MUSIC SYNTHESIZER
PHONES LOUTPUT RDCINON
STANDBY CONTROLLER SWITCH TO HOST HOST SELECT IN OUT THRU
MIDI
VOLUME
UTILITY
UTILITY MIDI MODE PART ELEMENT KEY
DATA
EDIT
MULTI PART
COMMON ELEMENT
VOICE
VOICE
MIX
TONE
EFFECT
CONTROLLER
GENERAL
OSC MIX
PITCH
AMP
EFFECT
LFO
FILTER
TG
MULTI
UTILITY
EDIT
COMPARE
JOB STORE
MIDI
VOICE DEMO MUTE DRUM CATEGORY
SEARCH
PRESET PIANO
BASS
1
0
23
456
789
REED/PIPE
STRINGS
SYN LEAD
BRASS
ENTER EXIT
SYN PAD
ORGAN GUITAR
USER
GM XG
SE
OTHER KEYBOARD
SYN COMP CHROMATIC
PERCUSSION
DRUM/PERC
COMMON
DEC INC
KEYBOARD
MIDI FILTER
EFFECT
CONTROLLER
MIDI CHANNEL
DOWN
OCTAVE
UP
FOOT FOOT
MIDI
PAGE
OCTAVE
PART NO YES
ELEM KEY
MONO
KEYELEMPART
OCTAVE
PAGE
qw t y ui o!0!1!4
e r !2!3 !5!6
Front Panel
PANEL LAYOUT
qOCTAVE [UP] and [DOWN] buttons
w[VOLUME] slider
ePITCH BEND wheel
rMODULATION wheel
tLCD
yParameter Type List
uMODE buttons
([MULTI], [VOICE], [DEMO], [UTILITY], [MIDI],
[EDIT/(COMPARE)], [JOB], [STORE])
i[PART/ELEMENT/KEY] buttons
([+], [–], [MUTE])
oDATA buttons
([DEC/NO], [INC/YES], [ ] / [ ], [ ] / [ ])
!0 [CATEGORY SEARCH/DRUM] button
!1 [PRESET/(DRUM/PERC)] button
!2 [USER/(SE)] button
!3 [GM/XG/(OTHER)] button
!4 Numeric keypad
!5 [ENTER/KEYBOARD] button
!6 [EXIT] button

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MIDI
OUTTHRU IN
HOST SELECT
TO HOST
FOOT
SWITCH FOOT
CONTROLLER
MacPC-2
MIDI OFF
OUTPUT
R L MONOON
STANDBY DC IN PHONES
qwertyuio
Rear Panel
qMIDI IN/OUT/THRU terminals
wHOST SELECT switch
eTO HOST terminal
rFOOT SWITCH jack
tFOOT CONTROLLER jack
ySTANDBY/ON switch
uDC IN terminal
iOUTPUT L/MONO and R jacks
oPHONES jack

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CIRCUIT BOARD LAYOUT
DM
MKS3
LC
LCD Assembly Top Assembly
Wheel Assembly Keyboard Assembly
Wheel AssemblyKeyboard Assembly
SW
SW
VOL
MK-H MK-L

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WIRING
AC
Adapter
MKS3
MK-L MK-H
VOLSW
LC
DM
Part No.
(VU55440)
(V361090)
(VK11170)
(V675990)
(V676000)
(VK10900)
(V675250)
(V668970)
VT368600
VT368700
VT368800
VV583100
VV583500
VV583700
VV583600
W80
110
L70
L80
L90
S90
CN002
60c
S4
S6
S7
S5
Location
q
w
e
r
t
y
u
i

o

!0
!1
!2
!3
Connector Assembly
MKS3-CN1
LC-CN1
LC
LC
SW-CN1
VOL-CN2
VOL-CN1
AC Adapter
MK-L
MK-L
MK-H
MK-H
DM-CN5
DM-CN3
DM-CN4
DM-CN6
SW-CN2
DM-CN1
DM-JK9
MKS3-CN2
MKS3-CN3
MKS3-CN4
MK-L
Destination
5P-300L,110L
6P-110L
15P-450L
1P-45L
1P-45L
14P-350L
3P-260L
6P-320L
Japanese
U.S.A
European
12P-300L
7P-260L
5P-640L
12P-230L
Remarks Availability
WHEEL
JUMPER WIRE
KRD-KRD
A (+)
B (-)
KRD-KRD
KR-DS
KR-KR
AC ADAPTER
MK-A
MK-C
MK-D
MK-B
q
!1
!0

!2
!3
u
yi
ew
r
t
o
CN2(12P)
CN1(6P) CN3(7P) CN4(5P)
JK9
CN1(6P)
CN5(5P) CN3(6P) CN4(15P) CN6(14P) Solder
Board-in
Connector
Screw
CN1(14P)
CN1(15P)
CN1(6P)
CN2(3P)
Back Light Assembly
Parts List
REF NO.
Back Light
Assembly
Back Light
Assembly
Wheel
Assembly
Wheel
Assembly
28C99-8817389

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DISASSEMBLY PROCEDURE
1. Bottom Cover Assembly (Time required: About 10 min.)
1-1 Remove the thirty-four (34) screws marked [150]. The bottom
cover assembly can then be removed. (Fig.1)
[150]
[150]
[150]
[150]
[150]
Bottom Cover Assembly
[150]
Fig.1
[150]: Bind Head Tapping Screw-B 4.0X8 MFZN2BL (EG340190)
2. DM Circuit Board (Time required: About 15 minutes)
2-1 Remove the bottom cover assembly. (See procedure 1.)
2-2 Remove the seven (7) screws marked [90A] and the six (6) screws
marked [90B]. The DM circuit board can then be removed.
(Fig.2, 3)
3. Replacing the Lithium Battery (Time required: About 10 min.)
3-1 Remove the bottom cover assembly. (See procedure 1.)
3-2 You can replace the lithium battery from the DM circuit board.
(Fig.3)
*The lithium battery is not part of the DM circuit board. When
you replace the DM circuit board, you should remove the lithium
battery from the board, and install in the holder on the new circuit
board.
4. SW Circuit Board (Time required: About 15 minutes)
4-1 Remove the bottom cover assembly. (See procedure 1.)
4-2 Remove the seven (7) screws marked [50] and the screw marked
[90D]. The SW circuit board can then be removed. (Fig.2)
4-3 Pull out the function buttons from the SW circuit board.

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DM
Lithium Battery
SW
[90A][100A]
[90C]
[50]
[90D]
Shield Box Assembly
Battery VN103500
VN103600(Battery holder for VN103500)
Notice for back-up battery removal
Push the battery as shown in figure,
then the battery will pop up.
Druk de batterij naar beneden zoals
aangeven in de tekening de batterij
springt dan naar voren.
Battery
Battery holder
Fig.2
[50]: Bind Head Tapping Screw-B
[90]: Bind Head Tapping Screw-B
[150]: Bind Head Tapping Screw-B
3.0X8 MFZN2BL (EP600190)
3.0X8 MFZN2BL (EP600190)
3.0X20 MFZN2BL (VJ999700)
[90A]
[90B]
Fig.3
[90]: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)
5. VOL Circuit Board, LC Circuit Board and Back Light
Assembly (Time required: About 15 minutes each)
5-1 Remove the bottom cover assembly. (See procedure 1.)
5-2 Remove the six (6) screws marked [90B], the screw marked [90C]
and the screw marked [100A]. The shield box assembly can
then be removed with the DM circuit board. (Fig.2, 3)
5-3 VOL Circuit Board:
Pull out the VR knob in the control panel side.
Remove the five (5) screws marked [80]. The VOL circuit board
can then be removed. (Fig.4)
5-4 LC Circuit Board and Back Light Assembly:
Remove the eight (8) screws marked [L60].The LC circuit board
can then be removed with the back light assembly. (Fig.4, 5)

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6. LCD and LCD Panel (Time required: About 20 minutes)
6-1 Remove the bottom cover assembly. (See procedure 1.)
6-2 Remove the shield box assembly. (See procedure 5-2.)
6-3 Remove the LC circuit board and the back light assembly. (See
procedure 5-4.)
6-4 Remove the two (2) rubber connectors from the LCD panel.
(Fig.5)
6-5 Lift the left end of the LCD first, and then remove it. (Fig.5)
6-6 Remove the four (4) screws marked [30A]. The LCD Panel can
then be removed. (Fig.4, 5)
*When re-install the rubber connector, place it so that the
conductor faces the inside. (Fig.6)
VOL
MKS3
LC
[80][30A][30A] [L60]
MKR angle [60A][60A]
[40] [40] [40] [30B] [40] [40]
[100B]
[60B]
Keyboard Assembly MKF angle MKF angle MKF angle Wheel Assembly
Fig.4
[30A]: Bind Head Tapping Screw-B
[30B]: Bind Head Tapping Screw-P
[30B]: Bind Head Tapping Screw-P
[40]: Bind Head Tapping Screw-B
[60]: Bind Head Tapping Screw-B
[L60]: Bind Head Tapping Screw-P
[80]: Bind Head Tapping Screw-B
[100B]: Bind HeadTapping Screw-B
3.0X8 MFZN2BL (EP600190)
3.0X8 MFZN2Y (EP600280) or
3.0X8 MFZN2BL (EP630220)
3.0X8 MFZN2BL (EP600190)
3.0X20 MFZN2BL (VJ999700)
3.0X8 MFZN2Y (EP600280)
3.0X8 MFZN2BL (EP600190)
3.0X8 MFZN2BL (EP600190)
Rubber Connector
Rubber Connector
Conductor side
Fig.6
Fig.5
LCD Panel
Rubber Connector
[L60]
Back Light Assembly
LCD
LC
LCD Panel

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7. Wheel Assembly (Time required: About 10 minutes)
7-1 Remove the bottom cover assembly. (See procedure 1.)
7-2 Remove the four (4) screws marked [100B]. The wheel assembly
can then be removed. (Fig.4)
8. Keyboard Assembly (Time required: About 20 minutes)
8-1 Remove the bottom cover assembly. (See procedure 1.)
8-2 Remove the shield box assembly. (See procedure 5-2.)
8-3 Remove the four (4) screws marked [60A]. The two (2) MKR
angles can then be removed. (Fig.4)
8-4 Remove the two (2) screws marked [60B]. The keyboard
assembly can then be removed. (Fig.4)
8-5 Remove the ten (10) screws marked [40]. The five (5) MKF
angles can then be removed from the keyboard assembly. (Fig.4)
9. Disassembling the keyboard assembly
(Time required: About 30 minutes)
9-1 Remove the keyboard assembly. (See procedure 8.)
9-2 Remove the two (2) screws marked [30B]. The MK3 circuit board
can then be removed. (Fig.4)
9-3 Remove the MK-L and MK-H circuit boards while pressing the
fifteen (15) hooksAinward, and then remove the rubber contact.
(Fig.7)
9-4 Remove the twenty-one (21) screws marked [140], then remove
the black keys from the lower notes. Afterwards, remove the
white keys DFA and C' and then remove the white keys CEGB
from the higher notes. At this time, lift the keys from the front
and slide them towards you. The keys can then be removed from
the assembly. (Fig.8)
Hooks A
Black Keys
MK-L MK-H,
White Keys
Rubber Contact
Fig.7
Fig.8
[140]: Bind Head Tapping Screw-P
[140]: Bind Head Tapping Screw-P
[140]: Bind Head Tapping Screw-P
3.0X16 MFZN2Y (EP600310) or
3.0X16 MFZN2BL (VB205200) or
3.0X16 MFZN2B (VS756700)
Black Keys White Keys DFA
White Key C'
White Keys CEGB
Rubber Contact
[140]
MK-L
MK-H
MKS3

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10. Assembling the keyboard assembly
(Time required: About 30 minutes)
10-1 Installthe white keys CEGB from the lower notes, and then install
the DFA keys and C' key.Afterwards install the black keys from
the higher notes, and tighten the twenty-one (21) screws marked
[140]. (Fig.8)
10-2 Install the rubber contacts in the assembly while pressing the
keys as shown in Figure 9. Check that the rubber contact has
been firmly placed into position in the area indicated by the
arrow in Figure 10. (Fig.9, 10)
*When fitting the rubber contacts, raise both ends of the frame so
that keys do not push the rubber contact up.
10-3 Install the MK-L and MK-H circuit boards in the assembly so
that the hooks B hold it as shown in Figure 11. (Fig.11)
Hooks B
MK-L MK-H,
Rubber Contact
Rubber Contact
Fig.9
Fig.10
Fig.11

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LSI PIN DESCRIPTION
1 ICN I Initial clear 85 CMA3 O Program address bus
2 RFCLKI I PLL Clock 86 CMA8 O Program address bus
3 TM2 I PLL Control 87 CMA2 O Program address bus
4 AVDD_PLL Power supply 88 CRD O read signal
5 AVSS_PLL Ground 89 CMA1 O Program address bus
6 MODE0 I SWX dual mode 90 CUB O high byte effective signal
7 VCC7 Power supply 91 VCC91 Power supply
8 GND8 Ground 92 GHND92 Ground
9 XIN I crystal oscillator 93 CS1 O CS signal
10 XOUT O crystal oscillator 94 CMA0 O Program address bus
11 MODE1 I SWX separate mode 95 CLB O low byte effective signal
12 TEST0 I TEST pin 96 CMA12 O Program address bus
13 TESTON I TEST pin 97 CMA11 O Program address bus
14 AN0-P40 I A/D converter 98 CMA10 O Program address bus
15 AN1-P41 I A/D converter 99 CMA9 O Program address bus
16 AN2-P42 I A/D converter 100 GND100 Ground
17 AN3-P43 I A/D converter 101 CWE O write signal
18 AVDD_AN Power supply 102 CMA16 O Program address bus
19 AVSS_AN Ground 103 CMA15 O Program address bus
20 TXD0 O for MIDI or TO-HOST 104 CMA14 O Program address bus
21 TXD1 O for MIDI 105 CMA13 O Program address bus
22 EXCLK I Crystal oscillator 106 CMD8 I/O Program memory Data bus
23 SMD11 I/O Wave memory data bus 107 CMD7 I/O Program memory Data bus
24 SMD4 I/O Wave memory data bus 108 CMD9 I/O Program memory Data bus
25 SMD3 I/O Wave memory data bus 109 CMD6 I/O Program memory Data bus
26 SMD12 I/O Wave memory data bus 110 CMD10 I/O Program memory Data bus
27 SMD10 I/O Wave memory data bus 111 CMD5 I/O Program memory Data bus
28 SMD5 I/O Wave memory data bus 112 CMD11 I/O Program memory Data bus
29 SMD2 I/O Wave memory data bus 113 CMD4 I/O Program memory Data bus
30 SMD13 I/O Wave memory data bus 114 CMD12 I/O Program memory Data bus
31 SMD9 I/O Wave memory data bus 115 CMD3 I/O Program memory Data bus
32 SMD6 I/O Wave memory data bus 116 CMD13 I/O Program memory Data bus
33 SMD1 I/O Wave memory data bus 117 CMD2 I/O Program memory Data bus
34 SMD14 I/O Wave memory data bus 118 CMD14 I/O Program memory Data bus
35 VCC35 Power supply 119 VCC119 Power supply
36 GND36 Ground 120 GND115 Ground
37 SMD8 I/O Wave memory data bus 121 CMD1 I/O Program memory Data bus
38 SMD7 I/O Wave memory data bus 122 CMD15 I/O Program memory Data bus
39 SMD0 I/O Wave memory data bus 123 CMD0 I/O Program memory Data bus
40 SMD15 I/O Wave memory data bus 124 CMA21 O Program address bus
41 SOE O read signal 125 PDT15 I/O SWX access data bus
42 SWE O write signal 126 PDT14 I/O SWX access data bus
43 SRAS O RAS signal 127 PDT13 I/O SWX access data bus
44 SCAS O CAS signal 128 PDT12 I/O SWX access data bus
45 REFRESH O REFRESH signal 129 PDT11 I/O SWX access data bus
46 CS0 O CS signal 130 PDT10 I/O SWX access data bus
47 SMA0 O Memory address bus 131 PDT9 I/O SWX access data bus
48 SMA16 O Memory address bus 132 PDT8 I/O SWX access data bus
49 VCC49 Power supply 133 VCC133 Power supply
50 GND50 Ground 134 GND134 Ground
51 SMA1 O Memory address bus 135 PDT7 I/O SWX access data bus
52 SMA15 O Memory address bus 136 PDT6 I/O SWX access data bus
53 SMA2 O Memory address bus 137 PDT5 I/O SWX access data bus
54 SMA14 O Memory address bus 138 PDT4 I/O SWX access data bus
55 SMA3 O Memory address bus 139 PDT3 I/O SWX access data bus
56 SMA13 O Memory address bus 140 PDT2 I/O SWX access data bus
57 SMA4 O Memory address bus 141 PDT1 I/O SWX access data bus
58 SMA12 O Memory address bus 142 PDT0 I/O SWX access data bus
59 SMA5 O Memory address bus 143 VCA143 Power supply
60 GND60 Ground 144 GND144 Ground
61 VCC61 Power supply 145 PAD2 I SWX access address bus
62 SMA11 O Memory address bus 146 PAD1 I SWX access address bus
63 SMA6 O Memory address bus 147 PAD0 I SWX access address bus
64 SMA10 O Memory address bus 148 VCC148 Power supply
65 SMA7 O Memory address bus 149 GND149 Ground
66 SMA9 O Memory address bus 150 PCS I Chip select
67 SMA17 O Memory address bus 151 PWR I write enable
68 SMA8 O Memory address bus 152 PRD I read enable
69 SMA18 O Memory address bus 153 RXD0 I for Midi or TO-HOST
70 SMA19 O Memory address bus 154 RXD1 I for Midi or Key scan
71 SMA20 O Memory address bus 155 SCLKI I EXT Clock
72 SMA21 O Memory address bus 156 ADIN I A/D converter
73 SMA22 O Memory address bus 157 ADLR O A/D converter LR clock
74 SMA23 O Memory address bus 158 DO0 O DAC
75 CMA20 O Program address bus 159 DO1 O DAC
76 CMA19 O Program address bus 160 SYSCLK O 1/2 clock
77 VCC77 Power supply 161 VCC161 Power supply
78 GND78 O Ground 162 GND162 Ground
79 CMA18 O Program address bus 163 WCLK O for DAC LR clock
80 CMA17 O Program address bus 164 QCLK O 1/12 clock
81 CMA5 O Program address bus 165 BCLK O IIS-DAC clock
82 CMA6 O Program address bus 166 SYI I Synch signal
83 CMA4 O Program address bus 167 IRQ0 I Interrupt request
84 CMA7 O Program address bus 168 NMI I Interrupt request
PIN NAME I/O FUNCTION
NO. PIN NAME I/O FUNCTION
NO.
HG73C205AFD (XU947C00) SWX00B (Tone Generator)
DM: IC001, 002

S03
16
1 OS22 O 41 DB2 I/O
2 OS21 O 42 DB3 I/O
3 OS20 O 43 DB4 I/O Data Bus
4 OS19 O 44 DB5 I/O
5 OS18 O 45 DB6 I/O
6 OS17 O 46 DB7 I/O
7 OS16 O 47 OC1 O
8 OS15 O 48 OC2 O
9 OS14 O 49 OC3 O
10 OS13 O 50 OC4 O
11 OS12 O 51 OC5 O
12 OS11 O Segment Signal 52 OC6 O
13 OS10 O 53 OC7 O
14 OS9 O 54 OC8 O
15 OS8 O 55 OC9 O
16 OS7 O 56 OC10 O
17 OS6 O 57 OC11 O
18 OS5 O 58 OC12 O
19 OS4 O 59 OC13 O
20 OS3 O 60 OC14 O
21 OS2 O 61 OC15 O
22 OS1 O 62 OC16 O
23 VSS GND 63 OS40 O
24 OSCI Oscillator 64 OS39 O
25 OSCO Oscillator 65 OS38 O
26 V1 66 OS37 O
27 V2 67 OS36 O
28 V3 Display Drive Power Supply 68 OS35 O
29 V4 69 OS34 O
30 V5 70 OS33 O
31 LOAD O Clock for Sirial Data Latch 71 OS32 O Segment Signal
32 CP O Clock for Sirial Data shift 72 OS31 O
33 VDD Power supply +5V 73 OS30 O
34 M O Select Sibnal 74 OS29 O
35 D O Common Signal 75 OS28 O
36 RS I Register Select Signal 76 OS27 O
37 R/W I Read Write Select Signal 77 OS26 O
38 E I Setup Start trigger 78 OS25 O
39 DB0 I/O Data Bus 79 OS24 O
40 DB1 I/O 80 OS23 O
PIN NAME I/O FUNCTION
NO. PIN NAME I/O FUNCTION
NO.





















































































LC7985ND (XN859A00) LCD Controller & Driver












LC: IC001
1 /RES I Reset 21 C7 I/O
2 /INT I Interrupt request 22 C6 I/O
3 NUM I Non-maskable interrupt 23 C5 I/O
4 A7 I/O 24 C4 I/O Port C
5 A6 I/O 25 C3 I/O
6 A5 I/O 26 C2 I/O
7 A4 I/O Port A 27 C1 I/O
8 A3 I/O 28 C0 I/O
9 A2 I/O 29 D0 I/O
10 A1 I/O 30 D1 I/O Port D
11 A0 I/O 31 D2 I/O
12 B0 I/O 32 D3/TX O (Serial data output)
13 B1 I/O 33 D4/RX I (Serial data input)
14 B2 I/O 34 D5//CK O
(Clock for serial operation)
15 B3 I/O Port B 35 D6//INT2 I (Interrupt request 2)
16 B4 I/O 36 /STBY I (Standby mode signal)
17 B5 I/O 37 TIMER I Timer
18 B6 I/O 38 XTAL O Clock
19 B7 I/O 39 EXTAL I
20 VSS Ground 40 VCC Power supply
PIN NAME I/O FUNCTION
NO. PIN NAME I/O FUNCTION NO.









































HD63B05V0F073P (XR951A00) CPU















MKS3: IC1

S03
17
PIN
NO.
1
2
3
4
5
6
7
8
I/O
I
I
O
4/8F
D. GND
16 BIT
D. VDD
A. GND
R. OUT
A. VDD
A. VDD
NAME
4/8 Fs selection
Digital ground
16 bit/18 bit selection
Digital power supply
Analog ground
Channel R output
Analog power supply
FUNCTION
µPD63200GS-E1 (XP867A00) DAC (Digital to Analog Converter)
PIN
NO.
9
10
11
12
13
14
15
16
I/O
O
I
I
I
I
R. REF
L. REF
L. OUT
A. GND
WDCK
RSI
SI/LSI
CLK
NAME
Channel R voltage reference
Channel L voltage reference
Channel L output
Analog ground
Word clock
Channel R series input
Series input/Channel L series input
Clock
FUNCTION
DM: IC018
1 D5 I/O 25 TX31 O Transmit Data 31
2 D6 I/O Data Bus 26 RX32 I Receive Data 32
3 D7 I/O 27 TX32 O Transmit Data 32
4 /IRQ0 I/O Interrupt Request Port 0 28 RX33 I Receive Data 33
5 /IRQ1 I/O Interrupt Request Port 1 29 TX33 I/O Transmit Data 33
6 Vss Ground 30 /IC I Initial Clear
7 /IRQ2 I/O Interrupt Request Port 2 31 Vss Ground
8 /IRQ3 I/O Interrupt Request Port 3 32 XI I Quartz Crystal Input
9 /RD I Read Signal Input 33 Vss Ground
10 /WR I Wright Signal Input 34 XO I/O Quartz Crystal Output
11 /CE I Chip Enable Input 35 A0 I
12 /ASTB I
Address Strobe (Not used: to ground) 36 A1 I
13 TESTSIO I
Input with Pull-down Resistor (50k) 37 A2 I Address Bus
14 RX0 I Receive Data 0 38 A3 I
15 TX0 O Transmit Data 0 39 A4 I
16 RX1 I Receive Data 1 40 A5 I
17 TX1 O Transmit Data 1 41 CPUCLK I CPU Clock
18 Vss Ground 42 Vss Ground
19 V
DD Power Supply 43 V DD Power Supply
20 RX2 I Receive Data 2 44 D0 I/O
21 TX2/BO2 O Transmit Data 2 45 D1 I/O
22 RX30 I Receive Data 30 46 D2 I/O Data Bus
23 TX30 O Transmit Data 30 47 D3 I/O
24 RX31 I Receive Data 31 48 D4 I/O
PIN NAME I/O FUNCTION
NO. PIN NAME I/O FUNCTION NO.
MBCG46183-129 (XV833A00) SIO4 (Gate Array)

























DM: IC030
SC7SU04FEL (XI348A00)
TC74HCT04AF-T1 (XI297A00)
Hex Inverter
DM: IC011, 024
MM74HC14SJK (XW104A00)
Hex Inverter
DM: IC029
TC74HCT32AF(EL) (XY096A00)
SN74HC32N (IR003250)
Quad 2 Input OR
DM: IC031
SW: IC004
1
2
3
4
5
6
7
1A
1Y
2A
2Y
3A
3Y
Vss
14
13
12
11
10
9
8
VDD
6A
6Y
5A
5Y
4A
4Y
1
2
3
4
5
6
7
1A
1Y
2A
2Y
3A
3Y
GND
14
13
12
11
10
9
8
VDD
6A
6Y
5A
5Y
4A
4Y
1
2
3
1A
1Y
4 2A
5 2B
6 2Y
7 GND
1B
14
13
12
Vcc
4A
11 4Y
10 3B
9 3A
8 3Y
4B
IC BLOCK DIAGRAM

S03
18
MM74HC245ASJX (XW107A00)
SN74HC245N (IR024550)
Octal 3-State Bus Transceiver
DM: IC027
SW: IC002
TC74VHC74FT (XV892A00)
Dual D-Type Flip-Flop
SB: IC001
TC74VHC157F(EL) (XT475A00)
74VHC157SJX (XY870A00)
Quad 2 to 1 Multiplexer
DM: IC025
HD29051FP (XV708A00)
Line Transceiver
DM: IC008
SN74HC138NSR (XW793A00)
3 to 8 Demultiplexer
DM: IC028
SN74HC273N (IR027350)
Octal D-Type Flir Flop
SW: IC001, 003
1
2
3
4
5
6
7
AA
Select
Enable
Output
Output
BB
CC
G2A G2A
G2B
G2B
G1 G1
Y7 Y7 Y5
Y4
Y3
Y2
Y1
Y0
Y6
16
15
14
13
12
11
10
Vcc
YO
Y1
Y2
Y3
Y4
Y5
8
GND 9Y6
1
2
3
4
5
6
7
SELECT
1A 1A
1B 1B
1Y 1Y
2A 2A
2B 2B
2Y 2Y
16
15
14
13
12
11
10
Vcc
STROBE
G
4A
S3Y
4A
4B
4B
4Y
4Y
3A
3A
3B
3B
8
GND 93Y
1
2
3
4
5
6
7
20
19
18
17
16
15
14
Vcc
G
B1
B2
B3
B4
B5
B6
B7
B8
8
9
10
12
11
GND
A8
A7
A6
A5
A4
A3
A2
A1
D1R
13
CLEAR
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
VCC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLOCK
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
Q
DCK
CL
D
Q
CK
CL
Q
DCK
CL
D
Q
CK
CL
D
Q
CK
CL
Q
DCK
CL
D
Q
CK
CL
Q
DCK
CL
1
2
3
4
5
6
7
1B
1A
1R
1DE
2R
2A
2B
16
15
14
13
12
11
Vcc
1D
1Y
1Z
2DE
2Z
2Y
8
GND 9
10
2D
INPUTS OUTPUTS
PR CLR CLK D Q Q
L
H
H
L
H
Q O
H
L
H
H
L
Q O
X
X
X
H
L
X
X
X
X
f
f
L
H
L
L
H
H
H
L
H
L
H
H
H
1
2
3
4
5
6
7
1CLR
1D
1CK
1PR
1Q
1Q
GND
14
13
12
11
10
9
8
VCC
2CLR
CLR
2D
D
2CK
CK
2PRPR
2Q
2Q
Q
Q
CLR
D
CK
PR
Q
Q
1
2
3
4-V
8
7
6
5
Output A +V
Non-Inverting
Input A
-DC Voltage Supply
+DC Voltage
Supply
Output B
Inverting
Input B
Non-Inverting
Input B
Inverting
Input A
+-
+-
TC7S66F (XR682A00)
Bilateral Switch
DM: IC021
TC7WH32FU(TE12L) (XY364A00)
Dual 2 Input OR Gate
SB: IC002
µPC4570G2 (XF291A00)
NJM4556AMT1 (XQ138A00)
NJM3414AM(T1) (XR294A00)
Dual Operational Amplifier
DM: IC013, 016, 019, 020
1
2
3
4
8
7
6
5
1A
2Y
GND
Vcc
1Y
2B
2A
1B
1
2
3
5
4
IN/OUT
GND
Vcc
CNTRL
OUT/IN

S03
19
to DM-CN1
OCTAVE DOWN OCTAVE UP
to SW-CN2
VOLUME
Component side
VOL Circuit Board
VOL Circuit Board (XZ146C0)..........................................................19
DM Circuit Board (XZ144F0).............................................20,21/22,23
SB Circuit Board (X0143A0) ............................................................20
LC Circuit Board (XZ147B0) .......................................................22/23
SW Circuit Board (XZ145C0) ......................................................24,25
MK-L Circuit Board (XR564C0)........................................................26
MKS3 Circuit Board (XU878B0).......................................................26
MK-H Circuit Board (XR565C0) .......................................................27
CIRCUIT BOARDS
Note: See parts list for details of circuit board component parts.
2NA-V626830 1

S03
20
A'
A
THRU OUT
MIDI IN
HOST SELECT TO HOST
FOOT
SWITCH
to SW-CN1
not installed
to Wheel Assembly to LC-CN1
SB Circuit Board
to IC30-12pin
to RA24-6pin
to IC28-4pin
to C51-1pin
Battery VN103500
VN103600(Battery holder for VN103500)
Notice for back-up battery removal
Push the battery as shown in figure,
then the battery will pop up.
Druk de batterij naar beneden zoals
aangeven in de tekening de batterij
springt dan naar voren.
Battery
Battery holder
DM Circuit Board
SB Circuit Board
Component side
DM:2NA-V583600 4
SB: 2NA-V755340