Yamaha Tyros 1 Service Manual

							Tyros / TRS-MS01
11  Lower Case Side
LocationParts No.W.H nameDiscription NotesSource Destination
260 (WA60900) INLET Power supply unit-CN1 INLET-CN3Gray 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 3.5FDD 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-CN5Red 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, CN5370 WA120200FDD(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 -CN6edge mark is adjusted to Pin 1 mark (
mark)(7P)
410 (V919640) MK3 61H-CN2 EMKS-N -CN3edge mark is adjusted to Pin 1 mark (mark)
(5P)
420 (V919650) MK4 61H-CN1 EMKS-N -CN2edge mark is adjusted to Pin 1 mark (mark)(12P)
A V8696200 Relay 61L-CN4 61H-CN3edge mark is adjusted to Pin 1 mark (
mark)
B V9357100PC sensorPC sensor PC-CN1 Carbon side is a PCB end side(2P)
650 (WA12570) GND3 DM Screw stopPower supply shield cover660 (WA53110) GND9INLET BOX Screw stopPower supply shield coverC (WA12590) GND5 AJACK-G3Power supply shield cover
DWA126200GND8 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
PNLMICVRPNC
Wheel Assy
PNR
LCL
LCR
PNL
MICVRPNC
Wheel Assy
LCD Unit
 Upper Case Side
 LCD Unit Assembly 
						

							Tyros / TRS-MS01
13  Upper Case Side
LocationParts No.W.H nameDiscription NotesSource Destination
330 (V928200)
WHEELWHEEL 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)POWERPower 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
LocationParts No.W.H nameDiscription Notes
Source Destination140 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 AssemblyShield 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 openThey 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)
VR2 W,H
VR1 W,HLED Service Connector Assembly
FFC2 Service Connector Assembly Power SW MICVRSUB Circuit Board
GND8 W,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
164. 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 LREG
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-N3.5 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 LAngle 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)
10-2Remove 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)
11-2Remove 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)
12-2Remove 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)
13-2Remove 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)
14-2Remove 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)
16-3Remove 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]
61L61H
(Fig.12-1)
12 11 10 9 6 7
5 4 3 1 1 3 4 5 6 7 8 228
61L61H
(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)
PNRPNL
[480b][480b] [B]
[C] [A] [A]
[480a][480f]
[480d]
[480c][480a]
[480e]
Power SwitchPNC
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)
20-3Remove 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)