Yamaha disklavier MX-100B Service Manual Download Page 1

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MX-100B

CONTENTS

Disklavier Design 2

Specifications 2

Panel Layout 3

How to Format Disks 4

MIDI Block Diagram 5

MIDI Data Format 6

MIDI Implementation Chart 10

Test Program 11

Adjusting the Various Units 13

Overall Circuit Diagram

008556

YAMAHA CORP.

HAMAMATSU, JAPAN

1 3K-625

Printed in Japan '90.8

Summary of Contents for disklavier MX-100B

Page 1: ...mat Disks 4 MIDI Block Diagram 5 MIDI Data Format 6 MIDI Implementation Chart 10 Test Program 11 Adjusting the Various Units 13 Unit Wiring 18 Block Diagram 20 Circuit Boards 21 Parts List Overall Circuit Diagram PP 008556 YAMAHA CORP HAMAMATSU JAPAN 1 3K 625 Printed in Japan 90 8 ...

Page 2: ...al to any individual or firm does not constitute authorization certification recognition of any applicable technical capabilities or establish a principle 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 Modifi...

Page 3: ... with Specifications for West Germany Media Double sided double density double track 3 5 inch microfloppy disks Memory capacity 628 kbytes Number of pieces 60 Music titles 32 characters Disk titles 64 characters Solenoid unit Polyphonic voices 16 Sensor unit Polyphonic voices 16 Powersupply Power requirement Local AC voltage Ambient temperature 4 C 40 F 40 C 104 F Standardequipment Wireless remote...

Page 4: ...MX 100B Panel Layout Front Panel External MIDI Panel Remote Control Unit 3 ...

Page 5: ...FORMAT OK In answer to the above message press the Play Pause button If you should decide not to proceed with formatting remove the disk instead Reconfirm the above question by again pressing the Play Pause button If you decide not to proceed with formatting remove the disk instead After a few minutes formatting is completed and the display will change as follows 4 ...

Page 6: ...MX 100B MIDI Block Diagram 5 ...

Page 7: ...MX 100B MIDI Data Format 1 Transmission Conditions 6 ...

Page 8: ...d if data is not transmitted within an interval of approximately 80 milli seconds the main clock is transmitted 7 Key On Off Status Note No Velocity 1 0 0 1 n n n n 9n 0 k k k k k k k 0 v v v v v v v n channel number 0 15 k 21 A 1 108 C7 Note 1 v 0 key off v 1 127 key on Note 1 Transposition is also limited to this range ControlChange Status Control No Control value 1 0 1 1 n n n n Bn 0 c c c c c ...

Page 9: ...ON When playing back a disk recorded on another system E seq all system information as well as system exclusive messages can be transmitted In MIDI OUT DELAY OUT conditions and also in Stop or Recording mode delay the data received through MIDI IN by 500msec and merge it with MIDI OUT without any changes 3 Reception Conditions 8 ...

Page 10: ...val of 300msec the piano keyboard and pedals become OFF as do the Note ON of MIDI OUT and the Sustain Pedal ON 9 ControlChange Status Control No Control Value 1 0 0 0 n n n n 8n 0 k k k k k k k 0 v v v v v v v 1 0 0 1 n n n n 9n 0 k k k k k k k 0 v v v v v v v n channel number 0 15 k 21 A 1 108 C7 v ignored n channel number k 21 A 1 108 C7 v 0 key off v 1 127 key on 1 0 1 1 n n n n Bn 0 c c c c c ...

Page 11: ...m Clock Real Time Commands Aux Local ON OFF AllNotesOFF Mes Active Sense sages Reset Transmitted 1 1 16 3 21 108 1 o 9nH v 1 127 x 9nH v 0 1 x 1 x 1 o o o 0 127 1 x 1 o o o Recognized 1 1 16 3 x 21 108 21 108 o v 1 127 x o o o Remarks if Metronome is used Notes All recognized data are transmitted 500msec later if controler mode is STOP or RECORD and DELAYOUT mode is on 1 All data are enabled to tr...

Page 12: ...rd playback Checkthat the piano type and controllertype match The ROM version and trimmer value will be displayed can be switched using the DIP switch on the CPU board 00 11 99 Check that the LED lights 00 11 99 each switch Check the LCD The checkered pattern blinks Check the metronome buzzer The buzzer sounds in synchronization with the blinking EXECUTING 01 40 8 9 18 20 and 39 omitted Checkthesw...

Page 13: ...faulty Check whether ROM is OK or NG OK normal or NG faulty Check whether MIDI functions are OK or NG If a MIDI cable is not connected NG will be displayed 01 88 90 91 Playback system test repeat playback in the order of keys 1 88 D S pedal Record system test in synchronization with the above playback display If an error occurs the LCD will display the error number and the LCD will indicate the me...

Page 14: ...rail Key bed Adjustment screws 4 x 75 Spacer Nut Forward backward adjustment Push the unit against the front surface of the key back rail Left right adjustment Install keys 2 50 and 87 then align the key drive unit so that each solenoid is the center of the corresponding key Height adjustment Install keys except for those located at the adjustment screws and adjust the screws so that the gap at th...

Page 15: ...the keys will pop up during playback 3 Adjusting the pedal drive unit Pedalsolenoid Wire Pedal lever hook Pedal lever clamp Pedal level rubber Pedal rod Pedal rod dowel Hex nut M4 Hex nut M4 Pedal lever Adjust the length of the wire so that the gap at is 5 mm for the soft pedal 3 mm for the damper pedal After adjusting the nut tighten the nut Set the wire so that it is vertical in both the front b...

Page 16: ...at the M2 is ON when there is a 1 5 0 8 mm gap between the string and the tip of the hammer Procedure 1 While pressing the L R buttons turn the power switch ON and the test program will begin 2 Press the button 8 times to move to the Piano Test keyboard playback will begin 3 Press the STOP button to stop playback 4 Manually press the hammer to move it toward the string 5 When M2 turns on the buzze...

Page 17: ...l sensor unit Use the adjustment screw to raise and lower the sensor so that it turns ON at the following positions Damper pedal when the damper felt is 1 mm above the string near the 49th key Soft pedal when 2 3 mm above the hammer rail if ON is too soon raise the sensor if ON is too late lower the sensor Procedure 1 Individually depress the damper and soft pedals and make adjustments 2 The buzze...

Page 18: ...oft mode is off and fasten it in place Adjusting the soft sensor Adjusting the normal mode switch Adjust the screw to open the normal mode switch in the normal mode VOL 0 8 17 Adjusting the soft mode switch Set the volume to the soft mode VOL 9 10 And adjust the screw to the open the soft mode switch when the hammer blow distance is 1 7mm 3 in soft mode ...

Page 19: ...MX 100B Unit Wiring US Canadian British European Australian Models 18 ...

Page 20: ...MX 100B Unit Wiring West German Model 19 ...

Page 21: ...MX 100B Block Diagram 20 ...

Page 22: ...MX 100B 22 Circuit Boards CPU Board 21 MX 100B ...

Page 23: ...MX 100B MX 100B 24 23 I O Board Except West German Model ...

Page 24: ...MX 100B MX 100B 26 I O Board West German model 25 ...

Page 25: ...27 28 MX 100B Mute Board MX 100B MIDI Board Sensor Board ...

Page 26: ...MX 100B 30 29 MX 100B M2 Detect Board Power Supply Board US Canadian Model Hammer LED Drive Board M1 K Detect Board Key LED Drive Board ...

Page 27: ...MX 100B Power Supply Board British West German European Australian Model MX 100B Drive B Board West German Model 31 32 Drive C Board West German Model ...

Page 28: ... Parts 1 1 Control Unit 8 2 Key Stop Rail Unit 11 3 Key Drive Unit Except West German Model 12 3 Key Drive Unit West German Model 13 4 Key Sensor Unit 14 5 Hammer Sensor Unit Air Damper Unit 15 6 Pedal Drive Unit Pedal Sensor Unit Mute Motor Unit Pedal Cushion Unit 17 7 I O Unit Power Supply Unit MIDI Unit 19 ...

Page 29: ...ray Resistor Array Resistor Array Semi Conductive Cera Cap Trnsistor Diode Semi Variable Resistor DIP Switch Quartz Crystal Ceramic Resonator EMI Filter RP65C02G YM5205 YM3802 MB81464 12 HD6350 MB8877 FDC9216B M50760 463 TC4511BP TC40H240 TC40H175 F9602 LS138 LS139 LS244 LS245 LS175 LS74 LS273 LS293 LS161 LS14 LS32 LS08 LS04 LS00 LS174 SN74LS06N MB74LS07P LS240 PST518 NJM555 256K 128K PC900V 15Ω2W...

Page 30: ... Top Connector LP Type Top Connector LP Type Top Connector LP Type Top Connector LP Type Top Connector LP Type Top Connector Top Connector VH Type Top Connector VH Type Top Connector Connector Panel Switch Unit Panel Switch Unit Diode LED LED LED 7Seg Indicator Power Switch Micro Switch Sensor Remote Controller FDD LCD IC Cable CPU FDD Cable CPU I O Remote Control Unit PKB30SPC 2001 G6A 274 BL02RN...

Page 31: ...or PH Type Top 60 BL 35 WH 75 BL 50 WH 110ºC D1K20 24key 16key 10ELS4 11ES4 TH3L20 0 1µF 4 0 0 V 3P 4P 6P 2P 6P 4P 5P 6P VF729400 Key Sensor Unit VJ579400 Key Sensor Unit VE471400 VB434100 CB502580 LB918060 LB918070 VE471200 iG036100 VB434400 VB433900 HZ003190 HV753470 FZ005030 CB502590 LB918090 LB918110 Circuit Board LED Drive LED Socket Connector XH Type Top Connector XH Type Top Circuit Board M...

Page 32: ... iG036100 XG275A00 iG057400 iC181520 iD102300 VB293700 HZ002940 VB307500 VB307600 VA106500 VB295700 iF001840 iF001220 FZ004100 FP337100 FZ000680 iF008530 VB293300 VB293400 Circuit Board I O IC IC IC IC IC IC IC Transistor Transistor Transistor Array Resistor Array Resistor Array Resistor Array Diode Diode Array Zener Diode First Recocvery Diode Semi Conductive Cera Cap Tantalum Capacitor MM Capaci...

Page 33: ...rd I O IC IC IC IC IC IC Transistor Diode Semi Conductive Cera Cap LED Ceramic Resonator Relay Resistor Array Resistor Array Resistor Array Coil Connector VH Type Top Connector VH Type Top Connector Top Connector Top Connector Top Connector Top Connector Top Connector Top Connector PH Type Top Connector PH Type Top Connector EH Type Top Circuit Board Sensor A IC IC IC IC Resistor Array Metal Oxide...

Page 34: ... Connector XH Type Top Connector XH Type Top Connector XH Type Top Connector XH Type Top Connector XH Type Top Connector XH Type Top Circuit Board Mute IC IC IC IC Photo Coupller Metal Oxide Film Resistor Semi Conductive Cera Cap Connector XH Type Top Connector XH Type Top Connector XH Type Connector XH Type 2SB596 MC1413P 1SS176 RD 3 0EB RD 2 2EB1 DSS310 0 022 CSA4 0MG11 220PX8 BL02RN2 R62T4 4P 9...

Page 35: ...e Fuse Holder Fuse Holder Cap Pilot Lamp Choke Coil Coil Power Transformer Power Transformer Power Transformer Ass y AN7812 SI 3052V 2SC2238B 2SC1815 KBH2504 10E4 1S1585 1S1555 RD6 2EB2 C10P10F S1VB20 BS08A AC16DGM CR02AM4 4700µF200V 0 15 µ F 250V 0 22µF125V 0 22 µ F 250V 22K Ω 2W 10K Ω 2W 12 Ω 10W 4 7K Ω 10W AW62199 B10KΩ SDA3SA 1 7A 250V 1 5A 250V 2 5A 250V 19627 19628 108 RN 120V SK 16 100 7A 1...

Page 36: ...8 MX 100B 1 Control Unit ...

Page 37: ...at Sink Sub Panel Sub Panel Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button Switch Button S...

Page 38: ...f No 31 32 33 34 35 Part No VB578600 ED330056 EB026056 VE514700 AA504370 Description Spacer Heat Sink Bind Screw Flat Head Screw Remote Control Unit Stopper Upper Front Board 3X5 BL 2 6X5 YE Remarks MX 100B ...

Page 39: ...o NB513830 Vi925900 EA050256 AA504740 EV200066 AA504056 AA504040 AA504130 EX550100 EV100056 EX500116 Description Key Stop Rail Unit Key Stop Rail Unit Pan Head Screw Spring Flat Washer Bolt Shaft Angle Washer Hexagonal Nut Truss Head Tapping Screw 5X25 YE 5X8x0 5t 4X12 YE Remarks BL WH WN ...

Page 40: ...1 1 2 3 4 5 6 7 8 Part No VH388600 VG927100 VG927200 AX500620 AX550350 CX558220 EX550050 EA040556 EX550110 AA504100 Description Key Drive Unit Coil Ass y A Coil Ass y B Spring C Spring Bushing Spring Screw Pan Head Screw Insert Nut Spacer 60 BL 35 WH M4 4X55 YE B4X9 5 YE 2t Remarks ODD Key EVEN Key 22mm ...

Page 41: ...967300 VG967400 ED030066 Description Key Drive Unit Pan Head Screw Insert Nut Flat Head Screw Bushing Spring Cushion Spring A Cushion Spring B Circuit Board Drive B Circuit Board Drive C Coil Ass y A Coil Ass y B Coil Ass y AL Coil Ass y BL Bind Head Screw 4X55 YE B4X9 5 YE 4X18 YE 18mm WH 22mm YE 24Key 16Key 60 BL 35 WH 75 BL 50 WH 3X6 YE Remarks Rear Front ODD Key EVEN Key Key 1 17 39 Key 40 ...

Page 42: ...0 EX550126 VE471400 VH866000 VE471200 Description Key Sensor Unit Key Sensor Unit Sensor Head B Spring A Spacer A Plug Plug Pan Head Screw Bind Head Screw Flat Washer Bind Head Screw Bind Head Screw Bind Head Screw Key Shutter Truss Head Tapping Screw Circuit Board LED Drive Circuit Board LED Drive Circuit Board M1 K Detect Emitter Receiver 3X4 BL 3X3 BL φ 3 3X5 BL 3X8 BL 3X16 BL 4X12 BL Remarks E...

Page 43: ...MX 100B 5 Hammer Sensor Unit Air Damper Unit 15 ...

Page 44: ...100 VE470900 VE471200 VE471300 Description Hammer Sensor Unit Hammer Sensor Unit Sensor Head B Plug Plug Pan Head Screw Flat Washer Bind Head Screw Pan Head Screw Bind Head Screw Hammer Shutter A Pan Head Screw Pan Head Screw Flat Washer Pan Head Screw Flat Washer Air Damper Truss Head Tapping Screw Circuit Board LED Drive Circuit Board M1 K Detect Circuit Board M2 Detect Receiver Emitter 3X3 YE 3...

Page 45: ...MX 100B 6 Pedal Drive Unit Pedal Sensor Unit Mute Moter Unit Pedal Cushion Unit 17 ...

Page 46: ...ion Pedal Drive Unit Pedal Drive Unit Pedal Lever Hook Pedal Lever Clamp Pedal Lever Spacer Hexagonal Nut Spring Washer Hexagonal Bolt Hexagonal Nut Spring Washer Truss Head Tapping Screw Mute Motor Ass y Motor Mute Collar Mute Motor Felt Collar Cord Mute Motor Tablet Switch Pan Head Screw Flat Washer Pan Head Screw Pan Head Tapping Screw Cord Holder Stopper Cord Holder Bind Head Screw Sensor Ring...

Page 47: ...MX 100B 7 I O Unit Power Supply Unit MIDI Unit 19 ...

Page 48: ...w Power Supply Unit Power Supply Unit Power Transformer Power Transformer Power Transformer Ass y AC Cord Ass y AC Cord Ass y AC Cord Ass y AC Cord Ass y AC Cord AC Cord AC Cord AC Cord Connector Connector Contact Pin Contact Pin Cord Stopper Bushing Power Switch Noise Filter Truss Tapping Screw BWH Screw Terminal Electolytic Capacitor Pan Head Screw Pan Head Screw Pan Head Screw Pan Head Screw Pa...

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