Yamaha Tyros TRS-MS01 User manual

SERVICE MANUAL
PK
001689
HAMAMATSU, JAPAN
Copyright (c) Yamaha Corporation. All rights reserved. PDF-K5381 ’02.10
■CONTENTS
SPECIFICATIONS (Tyros) ................................................................................ 3
SPECIFICATIONS (TRS-MS01) ....................................................................... 5
PNANEL LAYOUT (Tyros)................................................................................. 6
PNANEL LAYOUT (TRS-MS01)........................................................................ 9
CIRCUIT BOARD LAYOUT (Tyros)................................................................. 10
CIRCUIT BOARD LAYOUT (TRS-MS01)........................................................ 13
DISASSEMBLY PROCEDURE (Tyros)........................................................... 14
DISASSEMBLY PROCEDURE (TRS-MS01) .................................................. 24
LSI PIN DISCRIPTION (Tyros) ....................................................................... 26
IC BLOCK DIAGRAM (Tyros) ......................................................................... 36
IC BLOCK DIAGRAM (TRS-MS01) ................................................................ 37
CIRCUIT BOARDS (Tyros) ............................................................................. 38
CIRCUIT BOARDS (TRS-MS01) .................................................................... 62
TEST PROGRAM ........................................................................................... 65
SYSTEM RESET ............................................................................................ 73
MIDI IMPLEMENTATION CHART................................................................... 74
MIDI DATA FORMAT....................................................................................... 75
BLOCK DIAGRAM (TRS-MS01) ..................................................................... 94
OVERALL CIRCUIT DIAGRAM (TRS-MS01) ................................................. 95
PARTS LIST
BLOCK DIAGRAM (Tyros)
OVERALL CIRCUIT DIAGRAM (Tyros)
Tyros
TRS-MS01

IMPORTANT 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 understood 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 per form 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, certifica-
tion, recognition of any applicable technical capabilities, or establish a principal-agent relationship of any
form.
The data provided is believed 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, therefor, 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 buss in the unit (heavy gauge black wires connect to this
buss).
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 WelfareAgency (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.
IMPORTANT NOTICE FOR THE UNITED KINGDOM
Connecting the Plug and Cord
IMPORTANT. The wires in this mains lead are coloured in
accordance with the following code:
BLUE : NEUTRAL
BROWN : LIVE
As the colours of the wires in the mains lead of this apparatus
may not correspond with the coloured makings identifying the
terminals in your plug proceed as follows:
The wire which is coloured BLUE must be connected to the
terminal which is marked with the letter N or coloured BLACK.
The wire which is coloured BROWN must be connected to the
terminal which is marked with the letter L or coloured RED.
Making sure that neither core is connected to the earth
terminal of the three pin plug.
This applies only to products distributed by Yamaha-Kemble Music (U.K.) Ltd. (2 wires)
WARNING
Components having special characteristics are marked and
must be replaced with parts having specification equal to those
originally installed.
Tyros

Tyros/TRS-MS01
3
Sound Source: AWM
Keyboard:
Keys 61 Keys (C1 ~ C6)
Touch Response Initial Touch/Aftertouch
Polyphony: 128 Notes max
Voices:
Preset Voices 1185 403 voices (Normal: 393 + Mega: 10) + 10 Organ Flutes
voices
+ 480 XG voices + 256 GM2 voices
+ 31 drum kits (XG and Panel: 22 + GM2: 9) + 5 SFX kits
User Voices Maximum number is unlimited; de- Created data can be saved to the USER/FD/HD drive.
(created with Sound pends solely on the capacity of the
Creator function) USER/FD/HD drives. *
Custom Voices Normal Voice: 128 max Maximum number varies according to the type of voice created and
the way in which it was created or edited. For example, if only Live!
GrandPiano voices are saved as Custom voices, up to 94 voices can
be saved.
Drum Voice: 10 max Maximum number varies according to the type of voice created and
the way in which it was created or edited. For example, if only Live!
StandardKit voices are saved as Custom voices, up to 10 voices can
be saved.
Organ Flutes 10 Preset Created data can be saved to USER/FD/HD drive.
Orchestration:
Upper 3 parts RIGHT1, RIGHT2, RIGHT3
Lower 1 parts Includes LEFT HOLD function.
Split Point (Left) F#2 Can be set and memorized.
Split Point (Style) F#2 Can be set and memorized.
Effects:
Reverb 34 Preset + 3 User 1 block; parameters including depth can be edited.
Chorus 26 Preset + 3 User 1 block; parameters including depth can be edited.
DSP Effect 183 Preset + 3 User 1 block for style and song; parameters including depth can be edited.
DSP Effects 183 Preset + 10 User 4 blocks for RIGHT1, 2, 3, and LEFT; parameters in cluding depth
can be edited.
DSP Effect 183 Preset + 10 User 1 block for microphone; parameters including depth can be edited.
DSP Variation (Available) 4 blocks for RIGHT1, 2, 3, and LEFT
Poly/Mono (Available) When set to MONO, the Portamento Time can be set.
Vocal Harmony 60 Preset + 10 User 3 notes polyphony; parameters including balance can be edited.
Microphone Effect Noise Gate x 1, Compressor x 1,
3 Band EQ x 1
Harmony/Echo 17 Preset
Master EQ 5 Preset + 2 User 5 Band
Part EQ 29 parts 2 Band, 29 parts (RIGHT1, RIGHT2, RIGHT3, LEFT, STYLE x 8,
SONG x 16, M.PAD)
Master Compressor 5 Preset + 5 User 3 Band. Type, Threshold, and Gain (3 Band) can be set.
Touch Response 5 Preset
Tempo 5 ~ 500
Transpose -12 ~ 0 ~ 12 Can be set independently for Keyboard, Song, and Master.
Tune 414.8 ~ 440 ~ 466.8Hz Set in 0.2Hz units. A3 is set to 440Hz as default.
Upper Octave -1, 0, +1
Part Octave -2, -1, 0, +1, +2
Pitch Bend Wheel (Available)
Modulation Wheel (Available)
Style:
Preset Styles 300 Assigned to 10 category buttons
User Styles Maximum number is unlimited; de- Created data can be saved to the USER/FD/HD drive.
pends solely on the capacity of the
USER/FD/HD drives. *
Style selection Can be switched between PRESET When USER/DISK is turned ON, the path can be set to
and USER/DISK each of 10 category buttons.
Data Format Style File Format Up to 120 Kbytes per style
Controls INTRO x 3
FILL IN x 4
BREAK x 1
MAIN x 4
ENDING x 3 Includes ritardando (rit.) function
FADE IN/OUT
TAP TEMPO
Fingered Mode Single Finger, Multi Finger, Fingered, On Bass, Full Keyboard, AI
Fingered, AI Full Keyboard
(created with Voice Editor
software)
SPECIFICATIONS (Tyros)

Tyros / TRS-MS01
4
One Touch Setting: 4 setups per style Programmable
Music Finder: 1446 Records Programmable up to 2500 Records.
Multi Pad:
Control PAD 1/2/3/4, STOP
Bank Maximum number is unlimited; de- Created data can be saved to the USER/FD/HD drive.
pends solely on the capacity of the
USER/FD/HD drives. *
Song:
Playback method Disk Direct playback Includes Quick Start function
Selection controls I/II/III/IV/V/VI Includes Chain playback, Random playback, and the reservation
of next song (NEXT/CANCEL) function.
Playback controls SP1/SP2/SP3/SP4/LOOP Up to 4 song positions can be set and used for Jump/Loop playback.
Maximum number of songs Maximum number is unlimited; de- Created data can be saved to the USER/FD/HD drive.
pends solely on the capacity of the
USER/FD/HD drives. *
Channels 16
Recording capacity Approximately 35,000 notes max. Recording methods: Quick Record, Multi Track Record, Step
Record, Chord Step
Registration Memeory: 8 buttons Includes Freeze function. Created data can be saved to the USER/FD/
HD drive.
Language: 6 languages English, German, French, Spanish, Italian, Japanese
Display: Backlit Graphic LCD 7.8 inch, 640 x 480 dot
Lyrics (Available) XF, TUNE1000
Lyrics (others) (Available) KAR, M-Live
Score (Available) SMF
File Selection type Direct Selection/Number Input Voices, styles, songs, Multi Pad banks, Registration Memory banks
can be selected.
Disk:
Compatible format XG, XF, GM, GM Level2, SMF, DOC, Piano Player (ESEQ), Style File Format (SFF)
User drive 3.3 MB Up to 250 files/folders can be created in one folder.
Floppy disk 3.5 2HD/2DD Up to 250 files/folders can be created in one folder. Floppy disk ca-
pacity (root directory): up to 224 files/folders for 2HD, up to 112
files/folders for 2DD.
Hard disk 2.5-inch HD (optional) Up to 250 files/folders can be created in one folder.
Demonstrations: 6 languages English, German, French, Spanish, Italian, Japanese
Help: 6 languages English, German, French, Spanish, Italian, Japanese
Connectors:
MIDI MIDI A (IN/OUT)
MIDI B (IN/OUT)
Controls FOOT PEDAL 1/2/3 Assignable; default settings are 1: Sustain, 2: DSP Variation, 3:
Volume.
USB USB Slave x 1 USB Ver. 1.1
Video Out NTSC/PAL Composite Signal The current LCD contents or the Lyrics of the current song can
be displayed on an external video monitor.
Audio (Analog) PHONES
LOOP SEND (L/L+R, R)
LINE OUT MAIN (L/L+R, R), SUB (1/2)
AUX IN/LOOP RETURN (L/L+R, R),
TRIM VOL
TO SUB WOOFER L/R
TO LEFT/RIGHT SPEAKER
MIC/LINE IN Includes TRIM and INPUT VOLUME controls, and SIGNAL/OVER
indicator. A standard dynamic microphone with an impedance of about
250 ohms is recommended.
Power Supply AC Inlet Power consumption: 45W
Dimensions: 1140 (L) x 428 (D) x 137 (H) mm Not including the music rest, speakers and brackets.
Weight:12.4 kg
Packing List:
AC power cord x 1
Music rest and brackets
CD-ROM
Owner’s Manual, Data List, Installation Guide
USB cable
Optional Accessories:
Speaker TRS-MS01
Foot Switch FC4/5
Foot Controller FC7
Headphones HPE-150/HPE-160
Keyboard Stand L-7/L-7S
Bench BC-6
Hard Disk 2.5-inch IDE Height 12.7 mm max., 40 GB max. (current availability; support for
up to 137 GB)

Tyros/TRS-MS01
5
SPECIFICATIONS (TRS-MS01)
Type Advanced Active Servo Technology
Output power Satellite speakers ..................... 20 W + 20 W
(1 kHz, 4 a t T.H.D.=10%)
Subwoofer ............................... 40 W (100 Hz, 5 a t T.H.D.=10%)
Frequency response 32 Hz to 20 kHz
Speaker unit Satellite speakers
Tweeter .................................... 1.9 cm (3/4") dome, magnetic shielding
Midrange ................................. 8 cm (3") cone, magnetic shielding
Subwoofer ............................... 16 cm (6.5") cone, magnetic shielding
Power consumption 65W
Power supply U.S.A. and Canada models ..... AC 120 V, 60 Hz
Australia model ....................... AC 240 V, 50 Hz
U.K. and Europe models ......... AC 230 V, 50 Hz
Dimensions (W x H x D) Satellite speakers ..................... 97 (3.8") x 174 (6.9") x 178 (7") mm
Subwoofer ............................... 350 (13.8") x 210 (8.3") x 321 (12.6") mm
Weight Satellite speakers ..................... 0.7 kg (1 lb. 9 oz.) x 2
Subwoofer ............................... 8.0 kg (17 lbs. 10 oz.)
Accessories Speaker brackets x 2, RCA pin cables x 2,
RCA pin/8-pin combination cable x 1

Tyros / TRS-MS01
6
TAPTEMPO
REGISTRATI
O
FADE
IN/OUT REC TOP REW FF
LOOP
AUTO
FILL IN
OTS
LINK
ACMP
INTRO MAINVARIATION BREAK ENDING/rit.
SYNC
STOP SYNC START
METRONOME
MASTERVOLUME
MAX
MAX
INPUTVOLUME
FREEZE
TALK EFFECT
VOCAL
HARMONY
MIC
SETTING
VHTYPE
SELECT
TRANSPOSETEMPO
STOP
RESET
1234
MIC
STYLE CONTROL
SONG CONTROL
REGIST.
BANK
MIXING
CONSOLE
BALANCE
CHANNEL
ON/OFF
MIN
MIN
OVERSIGNAL
MIC/LINE IN
SONG
POWER
ON / OFF
RESET PART PART
A
B
C
D
E
DIRECT
ACCESS
1234
LCD CONTRAST
PITCH BEND MODULATION
UP MAX
MINDOWN
PHONES
STYLE
SP1 SP2 SP3
START/
STOP
SYNC START
NEW SONG
START/
STOP
SP4
MULTI PAD CONTROL
START/
STOP
PRESET
USER /DISK
q
e
w
#2 #3
ru i
t
y
!0 !1 !2 !3 !4
!6
!7
!8
!5
o
PHONES
POP & ROCK
BALLAD
DANCE
R&B
COUNTRY
MOVIE & SHOW
LATIN SWING & JAZZ WORLD
BALLROOM
PARTY
#4
#5
#6
#8
■PANEL LAYOUT (Tyros)
● Front Panel
qPOWER ON/OFF switch
wMASTER VOLUME control
eINPUT VOLUME control
rMIC buttons
tSONG CONTROL buttons
yFADE IN/OUT buttons
uSONG buttons
iSTYLE buttons
oSTYLE CONTROL buttons
!0 METRONOME button
!1 TAP button
!2 TEMPO button
!3 TRANSPOSE button
!4 MULTI PAD buttons
!5 MIXING CONSOLE button
!6 BALANCE button
!7 CHANNEL ON/OFF button
!8 REGISTRATION MEMORY buttons
!9 DEMO button
@0 HELP button

Tyros / TRS-MS01
7
LEFT LEFT HOLD RIGHT1 RIGHT2 RIGHT3
STRINGS TRUMPET
CHOIR SAXOPHONE
SYNTH
GUIDE
GUITAR
BASS
BRASS
PIANO
E.PIANO
ORGAN
UPPER OCTAVE
DATA ENTRY
PART ON/OFF
PART SELECT
ENTER
DSP DSP
VARIATION
POLY/
MONO
INITIAL
TOUCH
UPPER
SUSTAIN
LOWER
MEMORY
T
ION MEMORY
HELP FUNCTION
DIGITAL
RECORDING
SOUND
CREATOR SONG
STYLE
MULTI PAD
DISK IN USE
5678
USER
ORGAN
FLUTES
CUSTOM
VOICE
VOICE EFFECT
MENU
DEMO
ACCORDION
PAD
PERC. /
DRUM KIT
FLUTE /
CLARINET
PROGRAMMABLE
ONETOUCH SETTING
VOICE
RESET
BACK NEXT
F
G
H
I
J
EXIT
5678
PROGRAMMABLE
MUSIC FINDER
HARMONY/
ECHO
!9 @0 @1 @2 @3
@4 @5
@7
@8 #0 #1
@9
@6
#5
#9
$0
$1
#6
#7
@1 FUNCTION button
@2 SOUND CREATOR button
@3 DIGITAL RECORDING button
@4 PROGRAMMABLE MUSIC FINDER button
@5 PROGRAMMABLE ONE TOUCH SETTING buttons
@6 VOICE buttons
@7 PART SELECT buttons
@8 PART ON/OFF buttons
@9 VOICE EFFECT buttons
#0 UPPER OCTAVE buttons
#1 GUIDE button
#2 PITCH BEND wheel
#3 MODULATION wheel
#4 LCD CONTRAST
#5 LCD A-J Buttons
#6 LCD 1-8 Buttons
#7 BACK / NEXT Buttons
#8 DIRECT ACCESS Button
#9 EXIT Button
$0 DATA ENTRY Dial
$1 ENTER Button

Tyros / TRS-MS01
8
● Rear Panel
31 2 OUTIN OUTIN
VIDEO OUT
NTSC/PAL
USB
MIDI A MIDI BASSIGNABLE FOOT PEDAL
(VOLUME)(DSP VARIATION)(SUSTAIN)
TO RIGHT SPEAKER
12 INPUT
AC INLET
MIC / LINE IN
L/L+RRMAIN
SUB
LINE OUT
L/L+RR
LOOP SEND
TRIM
MIN MAX
L/L+RR
AUX IN / LOOP RETURN
TRIM
MIN MAX
TO LEFT SPEAKER
TO SUB
WOOFER
LR
L/L+RR
LOOP SEND
q
o !0 !1!2!3 !4!5!6 !7 !8!9 @0 @1
wer t y u i
qTO RIGHT SPEAKER jack
wASSIGNABLE FOOT PEDAL [SUSTAIN] jack
eASSIGNABLE FOOT PEDAL [DSP VARIATION] jack
rASSIGNABLE FOOT PEDAL [VOLUME] jack
tMIDI A [IN], [OUT] jack
yMIDI B [IN], [OUT] jack
uVIDEO OUT jack
iUSB jack (to PC)
oLINE OUT SUB [1], [2] jack
!0 LINE OUT MAIN [R], [L/L+R] jack
!1 AUX IN / LOOP RETURN TRIM control
!2 AUX IN / LOOP RETURN [R] jack
!3 AUX IN / LOOP RETURN [L/L+R] jack
!4 LOOP SEND [R] jack
!5 LOOP SEND [L/L+R] jack
!6 MIC / LINE IN INPUT jack
!7 MIC / LINE IN INPUT TRIM control
!8 TO SUB WOOFER [R] jack
!9 TO SUB WOOFER [L] jack
@0 AC INLET
@1 TO LEFT SPEAKER jack

Tyros / TRS-MS01
9
■PANEL LAYOUT (TRS-MS01)
POWERED MONITOR SPEAKERS TYROS-MS
q
L
R
TO KEYBOARD
e
w
r
POWERD MONITOR
SPEAKERS
POWERD MONITOR SPEAKERS
MODEL NO.TRS-MS
TO
KEYBOARD
● SUB WOOFER
● Satellite Speaker
qBASS Control knob
wPOWER ON/OFF Switch
eTO KEYBOARD L, R Jack (WOOFER)
rTO KEYBOARD Jack (Satellite)

Tyros / TRS-MS01
10
■CIRCUIT BOARD LAYOUT (Tyros)
[660] [310][340] [390] [330]
[260] [D] [C] [270] [360]
[420] [A] [B][400], [410]
[325][365][320][380][300]
[650]
[660][280] [290] [350] [370]
AJACK
INLET
MICVRSUB
SPOUTL SPOUTR
MICVRSUB
DJACK
DM
PHONES
REG
EMKS-N
61L 61H
61L 61H
61L 61H
PC
Power Supply
Unit
●Lower Case Side

Tyros / TRS-MS01
11
● Lower Case Side
Location Parts No. W.H name Discription Notes
Source Destination
260 (WA60900) INLET Power supply unit-CN1 INLET-CN3 Gray wire is adjusted to Pin 1 mark ( mark)
(2P)
270 (WA60890) SW Power supply unit-CN2 AJACK-CN1 Red wire is adjusted to Pin 1 mark ( mark)
(9P)
280 (V919700) SPL AJACK-CN6 SPOUTL-CN1 Red wire is adjusted to Pin 1 mark ( mark)
(2P)
290 (WA60810) HP AJACK-CN8 PHONES-CN4 Red wire is adjusted to Pin 1 mark ( mark)
(6P)
300 (V926360) VR2 (14P) AJACK-CN5 MICVRSUB-CN6
310 (V919790) FDD1 AJACK-CN2 3.5"FDD Unit (power) Red wire is adjusted to Pin 1 mark ( mark)
(2P)
320 (WA61040) POW AJACK-CN3 REG-CN1 The direction whith dose not have a ferrite core is
(4P) AJACK-CN3 connected.
325 (V962540) POW2 REG-CN2 DM-CN1 Red wire is adjusted to Pin 1 mark ( mark)
(7P)
330 WA120900 FCC4 AJACK-CN4 DM-CN9 Insulated plate side is a PCB end side
(24P)
340 (WA60940) SPR AJACK-CN7 SPOUTR-CN5 Red m wire is adjusted to Pin 1 mark ( mark)
(3P) The direction whith dose not have a ferrite core is
AJACK-CN7 connected.
350 WA121000 FCC5 DM-CN2 DJACK-CN1 Insulated plate side is a PCB end side
(21P)
360 (WA61010) VIDEO DJACK-CN2 DM-CN13 Conduction line is adjusted to Pin 1 mark ( mark)
(2P) The direction with a ferrite core is DJACK-CN2 con-
nected.
365 (WA61080) USB1(4P) DM-CN21 & PCB DJACK-CN4, CN5
370 WA120200 FDD(34P) DM-CN3 3.5" FDD Unit
380 (WA60990) MKS DM-CN8 EMKS-N -CN1 Red wire is adjusted to Pin 1 mark ( mark)
(7P) The direction whith dose not have a ferrite core is DM-
CN8 connected.
390 V9197600 PC PC-CN2 EMKS-N -CN5 Red wire is adjusted to Pin 1 mark ( mark)
(3P)
400 (V919630) MK2 61L-CN5 EMKS-N -CN6 edge mark is adjusted to Pin 1 mark ( mark)
(7P)
410 (V919640) MK3 61H-CN2 EMKS-N -CN3 edge mark is adjusted to Pin 1 mark ( mark)
(5P)
420 (V919650) MK4 61H-CN1 EMKS-N -CN2 edge mark is adjusted to Pin 1 mark ( mark)
(12P)
A V8696200 Relay 61L-CN4 61H-CN3 edge mark is adjusted to Pin 1 mark ( mark)
B V9357100 PC sensor PC sensor PC-CN1 Carbon side is a PCB end side
(2P)
650 (WA12570) GND3 DM Screw stop Power supply shield cover
660 (WA53110) GND9 INLET BOX Screw stop Power supply shield cover
C (WA12590) GND5 AJACK-G3 Power supply shield cover
D WA126200 GND8 AJACK-G4 PNL-CN7
Parts in parenthese are not supplied as the replacement parts.

Tyros / TRS-MS01
12
[270]
[150][160]
[140][170]
[C]
[200]
[560]
[450] [400]
[440] [200]
[330]
[160] [150][420][530]
[430] [410]
[820]
PNR
EN
PNL
MICVR
PNC
Wheel Ass'y
PNR
LCL
LCR
PNL
MICVR
PNC
Wheel Ass'y
LCD Unit
●Upper Case Side
●LCD Unit Assembly

Tyros / TRS-MS01
13
● Upper Case Side
Location Parts No. W.H name Discription Notes
Source Destination
330 (V928200)
WHEEL WHEEL Unit PNL-CN2 Yellow wire is adjusted to Pin 1 mark ( mark)
(4P)
400 (WA60830) PNLR PNL-CN1 PNR-CN1 Red wire is adjusted to Pin 1 mark ( mark)
(12P)
410 (WA60840) VR1(14P) MICVR-CN4 MICVRSUB-CN7
420 (WA60820) EN PNR-CN5 EN-CN6 Red wire is adjusted to Pin 1 mark ( mark)
(4P)
430 (WA60790) POWER Power SW INLET-CN2
440 WA120800 FFC3 PNR-CN4 PNC-CN1 Insulated plate side is a PCB end side
(30P)
450 WA120700 FFC2 PNR-CN2 DM-CN14 Insulated plate side is a PCB end side
(30P) A antivibration foams side is PNR-CN2 connected.
530 (WA61060) LED PNR-CN7 DM-CN20 A ferrite core side is PNR-CN7 connected.
(4P)
560 (WA60860) GND PNC Screw stop PNR Scwer stop
820 (WA12580) GND4 PNR Screw stop Shield cover support
● LCD Unit Assembly
Location Parts No. W.H name Discription Notes
Source Destination
140 MFA09250 CARD LCL-CN3 LCR-CN5
150 WA121100 FFC6 LCL-CN4 PNL-CN3 Insulated plate side is a PCB end side
(12P) The direction whith dose not have a ferrite core is LCL-
CN4 connected.
160 WA120600 FFC1 LCL-CN1 PNR-CN3 Insulated plate side is a PCB end side
(21P) The direction whith dose not have a ferrite core is LCL-
CN1 connected.
170 V9198800 CARD Display Unit LCL-CN2 Insulated plate side view
(20P)
200 (WA60850) INV LCR-CN7 MICVR-CN5 Red wire is adjusted to Pin 1 mark ( mark)
(2P) The direction whith dose not have a antivibration foams
is LCR-CN7 connected.
270 (WA60860) GND2 LCD Support stay PNR Screw stop
C -- -- LCD Unit LCR-CN6 Red wire is adjusted to Pin 1 mark ( mark)
(2P)
■CIRCUIT BOARD LAYOUT (TRS-MS01)
(A)
MAIN (B)
MAIN (C)
Speaker(Woofer)
Power Transformer
MAIN
MAIN (S)
Speaker(Midrange)
Speaker(Tweeter)
● SUB WOOFER Unit ● Satellite Speaker
Parts in parenthese are not supplied as the replacement parts.

Tyros / TRS-MS01
14
■ DISASSEMBLY PROCEDURE (Tyros)
●Electrical Check After Disassembly
The power will not turn on after the unit is seperated into the upper case assembly and the lower case assembly.
Then you can perform electrical check by using two connector assemblies supplied as service parts.
The connection procedure is as follows.
Keyboard Assembly
Upper Case Assembly
Lower Case Assembly
Shield cover
CN2
CN4
CN7
CN6
CN2
CN20
CN14
CN7
Power SW
PNRPNL PNC
DM
HP
VR
AJACK
MICVRSUB
Power Supply Assembly
VR2 W,H
Remove the VR1 W,H
from the cord binder.
Remove the MICVRSUB
Circuit board from the
lower case.
GND8 W,H open
They replaced the LED W,H with the
LED Service Connector Assembly (WA858300).
They replaced the FFC2 W,H with the
FFC2 Service Connector Assembly (MFA30600).
A. Power Switch
A-1 Remove the power switch from the upper case assem-
bly. (See procedure 25)
A-2 Connect the POWER connector assembly into the CN2
on the INLET circuit board.
B. MICVRSUB Circuit Board
B-1 Remove the MICVRSUB circuit board. (See proce-
dure 12)
B-2 Connect the VR1 connector assembly into the CN7 on
the MICVRSUB circuit board.
C. Connector Assembly (service parts)
C-1 Remove the shield upper cover. (See procedure 20)
C-2 Connect the CN2 on the PNR circuit board and the
CN14 on the DM circuit board via the FFC2 service
connector assembly.
C-3 Connect the CN7 on the PNR circuit board and the
CN20 on the DM circuit board via the LED service
connector assembly.
●FFC2 Service Connector Assembly (MFA30600)
●LED Service Connector Assembly (WA858300)
VR2W,H
VR1W,H
LED Service Connector Assembly
FFC2 Service Connector Assembly
Power SW
MICVRSUB Circuit Board
GND8W,H (Open)

Tyros / TRS-MS01
15
[130] [100b]
[140]
[100a] [100a] Cover S Cover L
(Fig.1)
[100]: Bonding Screw 3.0X8 MFZN2BL (VP157800)
[130]: Bind Head Tapping Screw-B 3.0X12 MFZN2Y (VE683000)
[140]: Bind Head Tapping Screw-B 3.0X30 MFZN2Y (V7213700)
* If you remove the filament tapes for disassembling, make sure to apply them on the same condition as before they are
removed.
1. Separating the Unit into the Upper Case As-
sembly and the Lower Case Assembly
(Time required: about 9 min)
1-1 Remove the eight (8) screws marked [100a] to remove
the under cover L. (Fig.1)
1-2 Remove the screw marked [100b] and the four (4)
screws marked [130] to remove the under cover S.
(Fig.1)
1-3 Remove the two (2) screws marked [130a] to remove
the inlet lower box. (Fig.2)
1-4 Disconnect the POWER W.H [a] on the INLET circuit
board from the CN2, the VR1 W.H [b] on the
MICVRSUB circuit board from the CN7 and the
GND8 W.H [c] on the PNL circuit board from the CN7.
(Fig.4)
1-5 Disconnect the FFC2 W.H[d] and the LED W.H [e] on
the DM circuit board from the CN14 and the CN20
respectively. (Fig.3)
1-6 Remove the twenty-eight (28) screws marked [120]
and the nine (9) screws marked [130b]. (Fig.2)
1-7 Remove the six (6) screws marked [140]. (Fig.1)
1-8 Lay the unit right side up, lift the rear of the upper
case assembly and pull it diagonally downward to re-
move. (Fig.5)
* When reinstalling the unit, tighten the four (4) screws
marked [A] before others. (Fig.2)
2. DM Circuit Board
(Time required: about 10 min)
2-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
2-2 If an optional hard disk unit is installed, remove the
four (4) screws marked [60] to remove the hard disk
unit with the mounting angle. (Fig.6)
2-3 Remove the seven (7) screws marked [530a]. The DM
circuit board can then be removed. (Fig.7)
3. DJACK Circuit Board
(Time required: about 12 min)
3-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
3-2 Remove the DM circuit board. (See procedure 2)
3-3 Remove the three (3) screws marked [530a] and the
eight (8) screws marked [540a]. The DJACK circuit
board can then be removed. (Fig.8)

Tyros / TRS-MS01
16
4. The PC Circuit Board
(Time required: about 10 min)
4-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
4-2 Remove the four (4) screws marked [180]. The PC cir-
cuit board can then be removed. (Fig.7)
[120]
[120]
[120]
[120]
[A]
[A]
[120]
[120][120][130a] [130b] [130b] [120][130b]
Lower Box
[a]
[b]
[c]
[d]
[e]
(Fig.2)
(Fig.4) (Fig.3)
(Fig.5)
[120]: Bind Head Tapping Screw-B 4.0X12 MFZN2BL (VR138400)
[130]: Bind Head Tapping Screw-B 3.0X12 MFZN2Y (VE683000)
[a]: POWER W.H Ass’y
[b]: VR1 W.H Ass’y
[c]: GND8 W.H Ass’y
[60]
Harddisk (Option)
(Fig.6)
[d]: FFC2 W.H Ass’y
[e]: LED W.H Ass’y
5 REG Circuit Board
(Time required: about 10 min)
5-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
5-2 Remove the four (4) screws marked [580]. The REG
circuit board can then be removed. (Fig.7)

Tyros / TRS-MS01
17
[580]
[530c][530b] [530b]
[530d] [200a]
[180][530a]
[200a] [200a] [200a] [200a] [200b]
AC Upper FrameShield sheet L
REG
PHONES
DM
PC
[540d]
[530d] [530b]
[550]
[70]
[530a]
[530f]
[580]
[540e][540c] [540a][540b]
[530e]
[165]
Power Supply Unit
Inlet Upper Box
A JACK
D JACK
SPOUT L
SPOUT R
MICVRSUB
EMKS-N
3.5" FDD Unit
(Fig.7)
(Fig.8)
[180]: Bind Head Tapping Screw-B 3.0X8 MFZN2Y (EP600250)
[200]: Bind Head Tapping Screw-P 3.0X20 MFZN2 (VT069800)
[530]: Bind Head Tapping Screw-B 3.0X8 MFZN2Y (EP600250)
[580]: Bind Head Screw 3.0X6 MFZN2Y (EG330040)
[70]: Bind Head Tapping Screw-B A4.0X16 MFZN2BL (VR145600)
[530]: Bind Head Tapping Screw-B 3.0X8 MFZN2Y (EP600250)
[540]: Bind Head Tapping Screw-B 3.0X10 MFZN2BL (EP600140)
[550]: Sems Pan Head Screw 3.0X10 (V5115200)
[580]: Bind Head Screw 3.0X6 MFZN2Y (EG330040)
6. Power Supply Unit
(Time required: about 11 min)
6-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
6-2 Remove the two (2) screws marked [530b] to remove
the shield sheet L. (Fig.7)
6-3 Remove the six (6) screws marked [530c] to remove
the AC upper frame. (Fig.7)
6-4 Remove the four (4) screws marked [580]. The power
supply unit can then be removed. (Fig.8)
* When reinstalling the AC upper frame, bundle the
shield sheet L with it by the two (2) screws marked
[530b]. (Fig.7)

Tyros / TRS-MS01
18
[530] [540]
INLET
[580a] [580b]
Angle L
Angle R
(Fig.9) (Fig.10)
[530]: Bind Head Tapping Screw-B 3.0X8 MFZN2Y (EP600250)
[540]: Bind Head Tapping Screw-B 3.0X10 MFZN2BL (EP600140)
[580]: Bind Head Screw 3.0X6 MFZN2Y (EG330040)
7. AJACK Circuit Board
(Time required: about 11 min)
7-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
7-2 Remove the AC upper frame. (See procedure 6-3)
7-3 Remove the MIC TRIM knob marked [165]. (Fig.8)
7-4 Remove the three (3) screws marked [530b] and the
six (6) screws marked [540b]. The AJACK circuit board
can then be removed. (Fig.8)
* When reinstalling the AC upper frame, bundle the
shield sheet L with it by the two (2) screws marked
[530b]. (Fig.7)
8. INLET Circuit Board
(Time required: about 10 min)
8-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
8-2 Remove the two (2) screws marked [530d] and the three
(3) screws marked [540c] to remove the inlet upper
box. (Fig.8)
8-3 Remove the screw marked [530] and the two (2) screws
marked [540]. The INLET circuit board can then be
removed. (Fig.9)
9. EMKS-N Circuit Board
(Time required: about 10 min)
9-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
9-2 Remove the two (2) screws marked [530e]. The EMKS-
N circuit board can then be removed. (Fig.8)
10. SPOUTL Circuit Board
(Time required: about 10 min)
10-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
10-2 Remove the two (2) screws marked [540d]. The
SPOUTL circuit board can then be removed. (Fig.8)
11. SPOUTR Circuit Board
(Time required: about 10 min)
11-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
11-2 Remove the two (2) screws marked [540e]. The
SPOUTR circuit board can then be removed. (Fig.8)
12. MICVRSUB Circuit Board
(Time required: about 10 min)
12-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
12-2 Remove the two (2) screws marked [530f]. The
MICVRSUB circuit board can then be removed. (Fig.8)
13. PHONES Circuit Board
(Time required: about 10 min)
13-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
13-2 Remove the three (3) screws marked [530d]. The
PHONES circuit board can then be removed. (Fig.7)
14. Floppy Disk Drive
(Time required: about 11 min)
14-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
14-2 Remove the three (3) screws marked [70] and the screw
marked [550]. (Fig.8)
14-3 Remove the two (2) screws marked [580a] to remove
the angle L. (Fig.10)
14-4 Remove the two (2) screws marked [580b] to remove
the angle R. (Fig.10)

Tyros / TRS-MS01
19
15. Keyboard Assembly
* Each octave can be removed individually.
15-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
15-2 Remove the four (4) screws marked [200a] for each
octave. (Fig.7)
However, remove the screw marked [200b] for the
rightmost (C6) key. (Fig.7)
15-3 Push the hook on the keyboard to unlock and lift the
rear of it. (Fig.11)
15-4 Move the keyboard diagonally downward to remove.
(Fig.11)
16. 61L Circuit Board
(Time required: about 13 min)
16-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
16-2 Remove the keyboard (C1 to B1, C2 to B2, C3 to B3).
(See procedure 15)
16-3 Remove the four (4) screws marked [180a] and the
eight (8) screws marked [190a]. The 61L circuit board
can then ber removed. (Fig.12-1)
* When reinstalling the 61L circuit board, tighten the
screws in order shown in Fig.12-2.
17. 61H Circuit Board
(Time required: about 13 min)
17-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
17-2 Remove the keyboard (C4 to B4, C5 to B5, C6). (See
procedure 15)
17-3 Remove the three (3) screws marked [180b] and the
five (5) screws marked [190b]. The 61H circuit board
can then be removed. (Fig.12-1)
* When reinstalling the 61H circuit board, tighten the
screws in order shown in Fig.12-2.
18 Rubber Contact
18-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
18-2 Remove the keyboard assembly corresponding to the
rubber contact to remove. (See procedure 15)
18-3 Remove the rubber contact.
Fook
(Fig.11)
[180a]
[190a]
[180b]
[190b]
61L 61H
(Fig.12-1)
12 11 10 9 6 7
543113456782 2
8
61L 61H
(Fig.12-2)
[180]: Bind Head Tapping Screw-B 3.0X8 MFZN2Y (EP600250)
[190]: Bind Head Tapping Screw-P SP 3.0X12 MFZNBL (VZ313100)

Tyros / TRS-MS01
20
[570] Shield Upper Cover
(Fig.14)
(Fig.15)
[570]: Bind Head Tapping Screw-B 4.0X12 MFZN2BL (VR138400)
PNR PNL
[480b]
[480b][B]
[C]
[A] [A]
[480a] [480f]
[480d]
[480c] [480a]
[480e]
Power Switch
PNC
Wheel Assembly
MICVR
Shield Cover Stay
Shield Sheet R
GND2 Wire
(Fig.13)
[480]: Bind Head Tapping Screw-B 3.0X8 MFZN2Y (EP600250)
19. PNL Circuit Board
(Time required: about 12 min)
19-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
19-2 Remove the twenty-four (24) screws marked [480a].
The PNL circuit board can then be removed. (Fig.13)
20. PNR Circuit Board
(Time required: about 14 min)
20-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
20-2 Remove the three (3) screws marked [570] to remove
the shield upper cover. (Fig.14)
20-3 Remove the thirty-one (31) screws marked [480b]. The
PNR circuit board can then be removed. (Fig.13)
* When reinstalling the PNR circuit board, bundle the
shield cover stays with it by the four (4) screws marked
[A]. (Fig.13)
Besides, bundle the shield sheet R with it by two (2)
screws marked [B]. (Fig.13)
21. PNC Circuit Board
(Time required: about 12 min)
21-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1)
21-2 Remove the shield upper cover. (See procedure 20-2)
21-3 Remove the fourteen (14) screws marked [480c]. The
PNC circuit board can then be removed. (Fig.13)
* Note for the panel button replacement
The replacement part of the panel buttons marked [220]
is sixfold.
When replacing these buttons, separate an unneces-
sary piece from the replacement part. (Fig.15)