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Yamaha Disklavier MX100A Product Handbook

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HYBRID PIANO PRODUCT HANDBOOK
FOR THE PIANO TECHNICIAN
MHB19
00.08 CR Printed in Japan

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  Summary of Contents for Yamaha Disklavier MX100A

  • Page 1 HYBRID PIANO PRODUCT HANDBOOK FOR THE PIANO TECHNICIAN MHB19 00.08 CR Printed in Japan...
  • Page 2 Foreword Yamaha introduced its first acoustic-electronic hybrid piano, the Disklavier MX100A, in 1987. Since that time Yamaha has continued to develop and market a variety of hybrid products. These products combine acoustic- piano technology with the leading-edge digital technology. This handbook provides a general introduction to product and maintenance concepts for hybrid pianos. It covers all hybrid models, and is intended as a general guide for persons in charge of servicing these instruments.
  • Page 3: Table Of Contents

    CONTENTS Part I: Product Description 1. Yamaha hybrid products are grouped into three broad categories.... 1 2. Basic Structure of Each Model..............4 DISKLAVIER (or “DKV”) Silent Piano GranTouch 3. Features of Each DKV Series..............6 MARKII SERIES (UP & GP) MARKII XG SERIES (UP &...
  • Page 4 7. Jack List ....................20 8. Sheets ...................... 22 9. Software Support..................24 Playable Software Yamaha software playback (examples) 10. Memory Capacity .................. 25 11. Data Locations..................26 12. Connecting to a Personal Computer ............27 13. Sensors ....................28...
  • Page 5 6. Sensor Testing for Silent Pianos and GranTouch ........38 6-1 MP80/100/1.., GT10 6-2 GPS, GT1, GT2, GT7 6-3 MP1Z, GT15, GT20 7. Checking the Version on Silent Pianos and GranTouch models....45 8. MN DIP-Switch ..................46 DIP SWITCH ON MN BOARD 9.
  • Page 7: Part I: Product Description

    Part I: Product Description I--1...
  • Page 9: Yamaha Hybrid Products Are Grouped Into Three Broad Categories

    Yamaha also offers the following two combination hybrids. 4. Disklavier Silent: Disklavier + Silent Piano 5. Disklavier GranTouch: Disklavier + GranTouch Table 1 shows the genealogy of Yamaha’s hybrid models. Table 2 lists the models in each category and briefly describes their main features.
  • Page 11 Table 2 Features of Each Hybrid Model Category Model Period Features Disklavier MX100A 87/12 - 90/7 1st.DKV/record & playback MX100B 90/7 - 92/9 MX100A with mute function (vol.-7) 89/7 - 92/9 1st. GPDKV wagon, HPpedal, self-calibration MX80 92/9 - 94/3 Record &...
  • Page 12: Basic Structure Of Each Model

    2. Basic Structure of Each Model DISKLAVIER (or “DKV”) A typical Disklavier consists of the following three units. • Control Unit: Includes control panel, FDD (floppy-disk drive), flash memory, CD drive, etc. • Sensor Unit: Detects performance actions. • Drive Unit: Drives keyboard and pedals during playback.
  • Page 13: Silent Piano

    Silent Piano A typical silent piano consists of the following: • Shank Stopper: Shuts off the acoustic sound. • Sensor Unit: Detects performance actions. • MN Board: Provides the digital piano sound Play <MP> <GPS> Pedal Shank Stopper Lever Shank Stopper Sensor Unit MN Board Sensor Unit...
  • Page 14: Features Of Each Dkv Series

    3. Features of Each DKV Series The Disklavier was first brought to market in 1987. Three upgraded series have been introduced since that time, as follows. • 1992/9 MARKII SERIES • 1997/2 MARKIIXG SERIES • 2000/4 MARKIII SERIES The main features of each series are as follows. MARKII SERIES (UP &...
  • Page 15: Dkv Pro Series

    4. DKV PRO SERIES In March 1998 Yamaha introduced the high-end DKV PRO SERIES. This series offers the following features. • Servo-controlled key drive unit with MM (moving magnet) sensors • Recording/playback covers key return movement • 1-beam continuous Key Sensor with calibration •...
  • Page 16: Controller

    5. Controller All Disklavier models include a control unit (controller). The controller implementation has changed over time, as controllers have gradually become smaller and increasingly functional. MX100: Built-in The controller is built into the front of the top board. DGP: DKW10 The DKW10 is a large free-standing “wagon-type”...
  • Page 17: Mx80: Dkc5R

    MX80: DKC5R The DKC5R is a thin control box which includes a volume-control slide switch. It is usually placed on the top board. The dimensions are: 435(W) × 47(H) × 192(D) [mm]. The controller’s rear panel includes MIDI IN and MIDI OUT jacks.
  • Page 18: Playback-Only Model: Dkc100Xg

    Playback-only model: DKC100XG This controller includes a built-in XG tone generator. It does not include a rotary encoder. It can be mounted under the keybed. The dimensions are: 319(W) × 68(H) × 204(D) [mm]. The controller’s rear panel includes MIDI IN and MIDI OUT jacks and R and L/MONO OUTPUT jacks. Control Box Front Panel + /YES CONTROL UNIT DKC100XG...
  • Page 19: Pro Series: Dkc500Rw

    PRO SERIES: DKC500RW The DKC500RW includes 8Mbits flash memory for program. The LED is green. In external appearance the DKC500RW is identical to the DCK500R. Kemble Made MPX70 YMM Made MX500/22/116: DKC50R This controller includes 8Mbits flash memory for program and 1MB flash for song memory, the LED is green. The dimensions of DKC50R are 227(W) ×...
  • Page 20: Markiii Series: Dkc55, Dkc55Rcd

    MarkIII SERIES: DKC55, DKC55RCD These controllers include 8Mbits flash memory for program and 16MB flash for song memory. The LED is green. The DKC55RCD includes a CD drive. The dimensions of the DKC55 are: 227(W) × 64(H) × 180(D) [mm]. The dimensions of the DKC55CD are: 227(W) ×...
  • Page 21 I-13...
  • Page 22: Switch Box

    6. SWITCH BOX The switch box is implemented separately from the controller, and is generally mounted under the keybed. The shape and function vary according to the model. A few Disklavier models do not include a switch box. The switch box provides various switches and jacks: main power switch, silent volume, and so on (depending on the model).
  • Page 23: Markii Xg Gp

    MarkII XG GP This model does not include a switch box. MPX100II The switch box is mounted on the treble side under the keybed. Front: Main power switch, silent volume, headphone jacks Side: Footswitch jack Rear: MIDI IN, MIDI OUT, AUX IN, AUX OUT MPX100IIXG The switch box is mounted on the treble side under the keybed.
  • Page 24: Mpx70/Mpx1Z

    MPX70/MPX1Z The switch box is mounted on the treble side under the keybed. Front: Main power switch, silent volume, headphone jacks, reverb depth Side: Footswitch jack (MPX1Z only; not provided on the MPX70) Rear: AUX IN, AUX OUT DGPS/DKVPRO/DKVMARKIII (The DGA1 has no switch box.) The switch box is mounted on the treble side under the keybed.
  • Page 25: Mp80/80T/100/300 (From 95/7)

    MP80/80T/100/300 (from 95/7) Mounted on the treble side under the keybed. Switch Box (front) Switch Box (rear) Front: Main power switch, silent volume, headphone jacks Rear: MIDI IN, MIDI OUT, AUX IN, AUX OUT MP1Z Mounted on the treble side under the keybed Front: Main power switch, silent volume, headphone jacks, reverb depth Side: Pitch switch...
  • Page 26: Gps

    The switch box is mounted on the treble side under the keybed. Front: Main power switch, silent volume, headphone jacks, reverb depth (from 97/10) Side: Pitch switch (from 97/10) Rear: MIDI IN, MIDI OUT, AUX IN, AUX OUT GT1/GT2/GT7 The switch box is mounted on the treble side under the keybed. Front: Main power switch, silent volume, headphone jacks, reverb depth Side: Pitch switch...
  • Page 27: Gt10/Gt15/Gt20

    GT10/GT15/GT20 Mounted on the treble side under the keybed. GT10/GT15 Front view GT20 Front view Front: Silent switch, volume, headphone jacks, reverb depth (on GT20 only) Rear: PITCH switch (on GT20 only) I-19...
  • Page 28: Jack List

    7. Jack List Hybrid models include various jacks to enable connection to external devices. The following jacks are typical: MIDI IN, MIDI OUT, AUX IN, AUX OUT, OUTPUT, HEADPHONES, PC Interface, DC IN The provided jacks vary according to the model. The specific location for each jack also varies by model: jacks may be mounted on the rear of the controller, on the switch box, or in a jack unit on the piano body.
  • Page 29 I-21...
  • Page 30: Sheets

    Hybrid models incorporate a variety of circuit sheets. The table below lists and describes the most important of these sheets. Note that sheet combinations vary according to the model. Sheets The following table lists and describes the different type of sheets that are used in Yamaha hybrid models. Control Sheet • Installed in the controller.
  • Page 31 Pedal Sensor Sheet • Transmits the pedal performance data (detected by the Pedal Sensor) to the PK- CTL sheet. On GP models, sostenuto-pedal performance data is sent to the Sen- sor Sheet. • This “Pedal Sensor sheet” exists independently on UP models only. On GP models, the pedal drive sheet carries out this function.
  • Page 32: Software Support

    floppy disks, flash memory, and CD-ROMs as their media (although CD recording is not supported). They support MIDI data; and CD-drive models also support audio data. Supported MIDI formats are SMF (stan- dard MIDI files) and E-Seq (Yamaha proprietary format). The following tables show the playback and recording support provided by each model.
  • Page 33: Memory Capacity

    10. Memory Capacity Hybrid models record performance data to either floppy disk or internal flash memory. Disk and flash-memory capacities are as follows. MEMORY CAPACITY Max. Number of Songs Capacity E-Seq Floppy disk (2DD) 720 KB Floppy disk (2HD) 1.44 MB Flash memory 1 MB 8 bits = 1 byte...
  • Page 34: Data Locations

    11. Data Locations Each Disklavier model stores a variety of data types: programs, setup data, measurement data, and so on. The fol- lowing table shows the storage location for each of the main data types. Data Storage Locations on Each Disklavier Model MarkII MarkIIXG MarkIII...
  • Page 35: Connecting To A Personal Computer

    • If using a Windows machine, a MIDI driver (serial driver) is required. This driver is not required if using a Macintosh. (The driver is included with XGworks, and can also be downloaded from the Yamaha website.) MarkIIXG PC running Windows...
  • Page 36: Sensors

    13. Sensors Hybrid models include a variety of sensors that are used in detecting and recording performance actions. The three main categories are Hammer Sensor, Key Sensor, and Pedal Sensor. The Hammer Sensor and Key Sensor are optical-fiber type, and detect both speed and position. Operation is based on optical beams and metal shutters;...
  • Page 37 I-29...
  • Page 38 Hammer BB500690 VU115000 VN523900 VU146500 Analog VZ140400 VP180300 Stapled VZ792600 VZ140600 VQ539500 BB500670 VQ764200 Stapled VR468800 VX446500 VR722100 VS517000 VG278200 VS517100 I-30...
  • Page 39: Typical Key Sensors And Their Structures

    Typical Key Sensors and Their Structures 1-beam ON/OFF sensor Used on models up to the MarkIIXG. 2-beams 4-points sensor Used on silent pianos (uprights and grands), etc. Rest 1-beam continuous sensor The continuous sensor was introduced on the GranTouch GT1, and has thereafter been used on the GT2, GT7, DGPS, PRO, MPX70, GT15, GT20, MARKIII, and others.
  • Page 40: Typical Hammer Sensors And Their Structures

    MPX70, GT15, GT20, MarkIII Light-quantity change curves are preset at the factory for each sensor and key, and these values are written into the sheet. Specifically, after the sensor has been installed the light quantities at open, rest, and end positions are measured for each key, and used to generate a change curve for that key. The key-specific curve is then used to determine the appropriate percentages (relative to at-rest light quan- tity) for points K1 to K4 for that key.
  • Page 41: Principle Of Sensor Emission & Reception

    Principle of Sensor Emission & Reception The Key Emission sheet incorporates 12 LEDs, where each LED is assigned to a different key in the scale: from A to G#. The Key Receive sheet incorporates 8 photoreceptors, one for each octave. The combination of LED and photoreceptor uniquely identifies each key on the keyboard.
  • Page 42: Control Of Sensor Detection And Data

    Control of Sensor Detection and Data Control is implemented by the sensor-sheet CPU. On some models this CPU is installed on the Hammer Sensor sheet, while in other models it is installed on the Key Sensor sheet. MX100II/MX100IIXG/MX1 MPX100II/MPX100IIXG/MPX1 DGPII/DGPIIXG H Sensor: 1-beam 2-points Hammer Emission Sheet Hammer Sensor Sheet: CPU...
  • Page 43 GT1/GT2/DGT2IIXG H Sensor: 1-beam 2-points Hammer Emission Sheet Hammer Sensor Sheet: CPU K Sensor: 1-beam Continuous Analog Key Sensor Sheet Hammer Emission Hammer Sensor Sheet PK-CTL Sheet (Hammer Receive) HAMMER SENSOR Key Sensor Sheet (Key Emission & Key Receive) KEY SENSOR DGPS/PRO/GT7/DGT7 H Sensor: 1-beam 2-points (GT7) 1-beam 4-points (DGPS) Hammer Emission Sheet...
  • Page 44: Sensing Data

    DC3III- H Sensor: 1-beam 4-points (DGPS) Hammer Emission Sheet Hammer Sensor Sheet K Sensor: 1-beam Continuous Analog Key Sensor Sheet: CPU Hammer Emission Hammer Sensor Sheet Sheet (Hammer Receive) HAMMER SENSOR CPU (Flash) Key Emission Key Sensor Sheet PK-CTL (Key Emission & Key Receive) Sheet KEY SENSOR Sensing Data...
  • Page 45: Tone Generators

    14. Tone Generators Two types of tone generator are used with hybrid models. (1) Piano Tone Generator • Sound is from sampling of the CF3S. • Included on all silent models. Provides the piano sound when the piano is in silent mode. •...
  • Page 46: Power Supply

    15. Power Supply Power is provided by the power-supply unit. Power voltages are as shown below. POWER SUPPLY High Voltage Solenoid 100V 120V DGT2IIXG 100V MARKIII 100V Low Voltage MX100IIXG H SENSOR 5V, 20V DGPIIXG K SENSOR CTRL MPX100IIXG H SENSOR 5V, 20V K SENSOR CTRL...
  • Page 47: Program Revisions

    16. Program Revisions Various operating programs are installed in the Disklavier’s various sheets. Over time these programs have been revised to achieve higher capability, to remove bugs, and to enhance commonality among models. The following tables show version histories for each of the major Disklavier models. (As of July 2000.) MX100II DGPII CTRL...
  • Page 48 DGPS CTRL PKCTL SENSOR Apr.98 V1.41 V3.13 V1.24 V3.0 Jun.98 V1.25 Aug.98 V1.42 Dec.98 V1.43 V1.26 May.99 V1.44 CTRL SENSOR Mar.98 V1.00 V1.02 V1.01 V1.42 V3.0 Sep.98 V2.10 V1.04 V1.02 Nov.98 V2.20 Jun.99 V2.21 V1.05 Oct.99 V1.03 MarkIII Playback only CTRL PKCTL May.00...
  • Page 49 GT1/2 SENSOR Mar.96 V1.20 V1.00 Feb.97 V2.00 Jun.97 V1.30 Feb.98 V3.00 DGT2IIXG CTRL PKCTL SENSOR Jun.97 V1.30 V1.01 V1.30 V3.0 Aug.97 V1.31 V1.02 Oct.97 V1.33 Mar.98 V1.41 V1.11 May.98 V1.13 Aug.98 V1.42 Dec.98 V1.43 May.99 V1.44 Jul.99 V3.01 V2.01 Jul.99 V3.03 Aug.99 V3.04...
  • Page 50 I-42...
  • Page 51: Part Ii: Servicing

    Part II: Servicing II--1...
  • Page 52 II-0...
  • Page 53 The general servicing procedure for hybrid models is as follows. 1. Adjust the acoustic system. Acoustic-system adjustment differs from conventional acoustic-piano adjustment with respect to the fol- lowing points. • Let-off adjustment (if silent function is included) • Spoon bending (if small DKV) •...
  • Page 54: Up Silent Models: Adjusting The Hammer Shank Stopper And Let-Off

    1. UP Silent Models: Adjusting the Hammer Shank Stopper and Let-Off For UP silent models: During silent mode, the jack must escape before the hammer shank touches the shank stop- per. This means that the hammer let-off must be set somewhat wider than on a conventional acoustic piano. Owing to a change in the shank-stopper specification, the shank-stop and let-off positions have been changed to the values indicated below.
  • Page 55 3. Swing Type (Shank stop: 4.5–7 mm; Let-off: 5.5–8 mm) • Use the turn buckle (A) to adjust the overall shank stop position. • To adjust at the bass end or treble end only, use the corresponding cable adjuster [(B) or (C)]. •...
  • Page 56 <Fig. 1> Hang metal Screw Bracket Metal Bracket Cord bass stay treble Metal stay <Fig. 2> Screws Drive metal S-lever Stopper Rest S-lever pivot Silent Screws Stopper pivot Drive metal stay II-4...
  • Page 57 <Fig. 3> Rear Side of Bass Bracket Stopper pivot hole. Stopper pivot (Inserted into the stopper pivot hole) Screw Stopper Stay <Fig. 4> Screws <Fig. 5> Stopper rubber Stopper bolt Gap 0.1–0.5 mm Lock screws II-5...
  • Page 58 5. Motor-Driven Type (Shank stop: 4.5–6.5 mm; Let-off: 5.5–8.5 mm) Adjust the shank stopper’s rest position. Where to adjust: Drive arm stroke adjustment screw. (Locked with a 7 mm nut.) (Fig. 1) (Located at the bass end of the hammer shank stopper unit.) Adjustment range: With the hammer pushed against the string, adjust so that the gap between the shank and its stopper is 2 to 4 mm.
  • Page 59: Gp Silent Models: Adjusting The Shank Stopper And Regulating Rods

    2. GP Silent Models: Adjusting the Shank Stopper and Regulating Rods GP silent models include a quick escapement mechanism that automatically accelerates the jack escape when the piano is placed into silent mode. For this reason the let-off can generally be adjusted in the same way as on a con- ventional acoustic grand piano.
  • Page 60 3. SHANK STOPPER HEIGHT adjustment: Use the stopper mounting bracket. If the piano is producing acoustic sound during silent mode, or is failing to produce acoustic sound under acoustic mode, first check the shank stopper angle. If the angle is correct then proceed to adjust the bracket height as necessary. (For A1–C3 [start- ing from about #5770000] and for C5 up, only bass-end or treble-end adjustment is possible.) 4.
  • Page 61: Action Regulation

    3. Action Regulation The following adjustments also differ from adjustments for a conventional acoustic piano. Hybrid Models vs. Acoustic Pianos: Differences in Regulation Standards 1. Silent UP: LET-OFF See “SHANK STOPPER Adjustment” (p. II-2) 2. Disklavier Pedal Adjustment See “Pedal Measurement” (p. II-15, 16) 3.
  • Page 62: Maintenance Mode

    4. Maintenance Mode 4-1 Menu All Disklavier models include a Maintenance mode. You can access the mode as follows. Hold down [ ] and [ ] and switch on the power. Press [L] or [R] as necessary to select the program. (On PRO models, press [ ] or [ ] to select the program.) Menu items differ somewhat according to model.
  • Page 63 DKVII/DKVIIXG/DKVIII (Full function) PLAYBACK ONLY PRESS POWER POWER * MAINTENANCE * *** MODE GPS ** * MAINTENANCE * *** MODE HI *** PRESS button PRESS button ***** TEST ***** ***** PLAY ***** ***** TEST ***** ***** PLAY ***** *** KEYBOARD *** ** ADJUSTMENT ** *** KEYBOARD *** ** ppp ADJUST **...
  • Page 64 DGT2IIXG/DGT7 MPX70 PRESS PRESS POWER POWER * MAINTENANCE * * MAINTENANCE * *** MODE DGT *** *** MODE UPS *** PRESS button PRESS button ***** TEST ***** ***** TEST ***** ***** PLAY ***** ***** PLAY ***** *** KEYBOARD *** *** KEYBOARD *** ** ADJUSTMENT ** ** ADJUSTMENT ** ** KEYBOARD **...
  • Page 65 DKVPRO (KMC V1.04~) POWER Maintenance Mode (YES) + /YES TEST Play (YES, Pedal stroke measure (YES, Loud half point adjust (YES, Keyboard adjustment (YES, All key measure minimum (YES, All key measure complete (YES, Sensor measure (YES, Key position auto set (YES, Key attack measure (YES,...
  • Page 66: Pedal Measurement

    4-2 Pedal Measurement Purpose: To determine playback pedal stroke (a–d) and half-point (HP or c, d). UP Sustain GP Sustain Normal-Play Auto-Play Normal-Play Auto-Play Pedal OFF Pedal OFF Beginning MIDI 00 Beginning MIDI 00 Half Half Point Point Area Stroke-End MIDI 7F Stroke-End MIDI 7F...
  • Page 67 Work Flow UP LOUD PEDAL UP SOFT PEDAL 1.Acoustic Pedal Adjustment 1.Acoustic Pedal Adjustment 2.Pedal Measurement 2.Pedal Measurement 3.Half Point Manual Adjustment 3.MIDI 7F Manual Compensation 4.MIDI 7F Manual Compensation GP LOUD PEDAL GP SHIFT PEDAL 1.Acoustic Pedal Adjustment 1.Acoustic Pedal Adjustment 2.Pedal Measurement 2.Pedal Measurement 3.Half Point Manual Adjustment...
  • Page 68 ... The following label is attached to the inside cover of the pedal drive unit. [Grand models] (MarkII~) II-16...
  • Page 69 [PRO model] Acoustic Pedal Adjustment • Loosen Nut A, and then turn Nut B so that the G line (boundary line) of the scale aligns with the F level. • Adjust the cap nut, pedal stroke-end capstan screw, and soft pedal as on an acoustic piano. •...
  • Page 70 2. Pedal Measurement • On the MarkII and MarkIII, LOUD PEDAL and SOFT PEDAL are offered as separate items. Enter maintenance mode: Hold down [ ] and [ ] and switch on the power. Press [R] three times. ** LOUD PEDAL ** PROGRAM No.
  • Page 71: Keyboard Measurement

    4-3 Keyboard Measurement 1. Keyboard Measurement for all except PRO models Purpose Eliminates disparities among different pianos and among different keys on each piano. Generates custom- ized playback tables and stores these into the PK-CTL sheet. Work Flow 1. Measure the piano’s current state. Apply different levels of drive current to the key solenoids while measuring the main keyboard parame- ters: hammer velocity (as measured by hammer sensors), key-off timing (as measured by key sensors) etc.
  • Page 72 2. Keyboard Measurement for PRO models In addition to general DKV keyboard measurements, PRO models also require various types of calibration. These calibrations are necessary to support the PRO line’s high-performance recording and playback capa- bilities. When you select Maintenance mode item 06 (“All key measure complete”), the program automatically car- ries out each of the calibrations listed below.
  • Page 73: Calibration Results

    4-4 Calibration Results 1. MarkII, MarkIII Pedal Measurement If a problem was discovered during measurement, the program displays the relevant pass numbers after measurement is completed. Keyboard Measurement After measurement has been completed, press [+/YES] to display pass and key numbers for any prob- lems that were detected.
  • Page 74 II-22...
  • Page 75 2. PRO Models: These models do not use PASS numbers. Pedal Measurement If Maintenance mode’s “Pedal stroke measure” returns OK at the screen shown below, there is no prob- lem. If “ZNG” is returned, the adjustment must be performed again. Pedal stroke measure S :OK L :OK...
  • Page 76: Keyboard Adjustment

    4-5 Keyboard Adjustment Purpose Carry out playback using minimum pressures (as determined by the data in the existing playback tables) while listening to playback to confirm that sound and volume are correct and consistent. In the event of a problem, adjust as necessary and change the table data. Operation MarkII, Mark III Enter maintenance mode: Hold down [...
  • Page 77 Press [PLAY] to start: Keys 1 to 88 at minimum pressure (single note scale) KEY=XX PPP=XX * Since the piano does not have sensors, there are no OFFSET and VEL values. Standard data from full- function models are installed for the playback tables. KEY: Key Number PPP:...
  • Page 78: Damping Adjustment

    4-6 Damping Adjustment Adjustment of Key-Return Damping Maintenance-mode adjustment of key-return damping is provided on models starting from MarkII PK-CTL V1.23. PRO models do not include this adjustment (since control continues through key-return movement). Purpose: To suppress noise generated when keys begin return during playback, a momentary reverse force is applied to the key by the solenoid at the start of key return.
  • Page 79: Test Mode

    5. Test Mode Test mode is provided on all Disklavier models. This mode is used to check functions on each sheet and to view an “error history” of the errors that have occurred on the instrument. You can access this mode as follows. Hold down [L] and [R] and switch on the power.
  • Page 80 MARKIIXG – – – – – POWER DGPS <On MPX100II XG only> * TEST MODE UP * ** TEST MODE *** ** TEST MODE *** ** TEST MODE *** ** TEST MODE *** * ERROR HISTORY * –/NO<–PUSH–>+/YES ** CTRL SHEET ** * PK CTL SHEET * * SENSOR SHEET * *** MN SHEET ***...
  • Page 81 PLAYBACK ONLY – – POWER * TEST MODE GH1 *** TEST MODE *** ** TEST MODE *** * ERROR HISTORY * – <–PUSH –> + *** CTRL SHEET *** * PK CTL SHEET * **** DISPLAY **** V1.04 920909 GH1 PK CTL ROM ––––...
  • Page 82 DKVPRO + /YES + /YES + /YES + /YES POWER **** TEST MODE GPS-X **** **** TEST MODE **** **** Sensor unit test *** **** KMC sheet test *** **** SCPP sheet test *** –/NO <- PUSH -> +YES *** CONTROL SHEET *** (–, +, (–, +, (–, +,...
  • Page 83 + /YES + /YES + /YES + /YES + /YES **** PMC sheet test **** **** Key drive test **** * Power supply voltage * *** MN sheet version *** ***** Error history **** (–, +, (–, +, (–, +, (–, +, (–, +, –/NO...
  • Page 84 II-32...
  • Page 85: Checking The Version

    Test-mode operations that are particularly important when carrying out maintenance are described below. 5-2 Checking the Version The first menu item for each sheet indicates the sheet’s version number. (It is often essential to know the version when diagnosing and servicing problems.) 5-3 Setting the Display Language The controller can be set to display either English or Japanese.
  • Page 86: Checking The Sensors

    5-5 Checking the Sensors 1. Pedal Sensors Check whether the sensors are correctly detecting the pedal position. Pedal drive models (excluding MPX70 and PRO) For soft/shift and sustain pedals, use the PK-CTL SHEET menu’s “PDL SNS TEST” (pedal sensor test). (1) PDL SNS TEST Confirm that S (soft/shift) and L (sustain) value changes S=20...
  • Page 87 2. Key Sensor Check that the key sensor is functioning properly and that the height is correct. MarkII (1-beam ON/OFF) Use “KEY SENSOR DEPTH TEST” on the SENSOR SHEET menu. (1) KEY TEST Press the key down slowly, and confirm that the key KEY NUMBER = XX comes ON (the buzzer sounds) when the key depth reaches 4.5 mm.
  • Page 88 DGPS, DKVPRO, MARKIII (1-beam 4-points) For all except the PRO, use “HAMMER SENSOR HEIGHT TEST” on the SENSOR SHEET menu. For the PRO, use “HAMMER SENSOR HEIGHT TEST” on the “Sensor unit test” menu. (2) HMR TEST Slowly advance the hammer toward the stopper, and KEY NUMBER = XX check points H1 to H4 (buzzer ON and OFF).
  • Page 89: Calibration Of Key Sensor (Mpx70, Markiii)

    5-6 Calibration of Key Sensor (MPX70, MARKIII) The 1-beam continuous sensor on the MPX70 and the MARKIII includes a calibration function. In most cases it is not necessary to perform calibration after the instrument has left the factory. But cali- bration does need to be performed whenever the sensor unit is replaced.
  • Page 90: Sensor Testing For Silent Pianos And Grantouch

    6. Sensor Testing for Silent Pianos and GranTouch Since Silent Pianos and GranTouch models do not have controllers, you need to use the keyboard to engage sen- sor-test mode. For these models, please enter this mode and check the sensor operation as described below. 6-1 MP80/100/1.., GT10 Enter sensor test mode: 1A + 3B + 4C + [POWER] Key sensor...
  • Page 91 Adjusting the soft pedal and testing the pedal sensor (Leaf switch with ON/OFF detection) Use the adjustment screw to adjust the sensor. If the sensor is adjusted correctly, a beep should be produced when the hammer rail has moved 2–3 mm (about 1/10 inch). II-39...
  • Page 92: Gps, Gt1, Gt2, Gt7

    6-2 GPS, GT1, GT2, GT7 Enter the appropriate sensor test mode. 1A + 3B + 4C + [POWER] Key Sensor Test, Pedal Sensor Test 1A + 3B + [POWER] Hammer Sensor Test, Pedal Sensor Test Key sensor 2-beams 4-points Slowly depress key and confirm by listening to the buzzer. (Use headphones.) ....
  • Page 93 Sustain pedal Slowly depress the pedal and confirm by listening to the buzzer. (Use headphones.) Check: • The first buzzer should come on as soon as the pedal has moved just a small amount. • The second should come on when the damper wood has come up just a small amount (0.5 mm).
  • Page 94: Mp1Z, Gt15, Gt20

    6-3 MP1Z, GT15, GT20 Enter sensor test mode: 1A + 3B + 4C + [POWER] Key sensor 1-beam continuous Slowly depress key and confirm by listening to the buzzer. (Use headphones.) ....Check: • Confirm that all points K1 to K4 are reached. •...
  • Page 95 [One key measure] Item Operation Response Start-up 9F+11G+Power ON Chord Once/sec. Ready Wait for 30-40sec. (stabilize the output of light-emit- ting components) Select key Play the appropriate key Note that was played Once/sec. Open position measurement Pull the key shutter up and out of the sensor unit. (Raise the key.) Write to RAM With the keyboard raised.
  • Page 96 Key Sensor Calibration One Key Correction After performing the key Sensor Calibration in maintenance mode, or if there is unevenness in the volume of the keys and after verifying the state in sensor test mode you performed Key Sensor Calibration but there was no improvement, you can use the One Key Correction function to manually correct the K1 position in order to balance the note response.
  • Page 97: Checking The Version On Silent Pianos And Grantouch Models

    7. Checking the Version on Silent Pianos and GranTouch models Since Silent Pianos and GranTouch models do not have controllers, you need to use the keyboard to engage ver- sion-check mode. The piano then identifies the sensor and tone-generator versions by playing out notes as described below.
  • Page 98: Mn Dip-Switch

    8. MN DIP-Switch DIP SWITCH ON MN BOARD Gran Touch and silent pianos include a 4-bit DIP-switch on the MN board. During normal use the switch bits (SW1 to SW4) are generally all set to OFF, but during servicing or maintenance you can use them to execute function checks as described below.
  • Page 99: Program Rewriting (And Rom Replacement)

    9. Program Rewriting (and ROM Replacement) Changing the ROM For models up to MarkII, the programs for the control sheet and PK-CTL sheet can be changed only by replacing the ROM. Removing the ROM Insert a flat screwdriver or something similar under each end of the chip, and pry off a little at a time. Location on Board Control board PK-CTL board...
  • Page 100 PRO CTRL/PMC/KMC POWER CTRL SYSTEM V1.33Q x 1 *UPDATE (ENT) KEY SYSTEM V1.00c *UPDATE (ENT) PDL SYSTEM V1.006 *UPDATE (ENT) ENTER REWRITE SYSTEM PROGRAM (ENT) ENTER INSERT UPDATE DISK PLEASE WAIT V 1.33 V 1.34 ****-SURE? (YES, NO) + /YES V 1.33 V 1.34 DO NOT REMOVE DISK ****...
  • Page 101 MARKIII CTRL/PK-CTL/SENSOR/DSP CONTROL UNIT KEY DRIVE UNIT SENSOR UNIT CTRL SYSTEM V4.00 V1.00 SENSOR 1.00 DSP SYSTEM V 1.00 *UPDATE (ENT) *UPDATE (ENT) *UPDATE (ENT) *UPDATE (ENT) (PK-DTL sheet) REWRITE SYSTEM PROGRAM (ENT) INSERT UPDATE DISK! Insert UPDATE DISK for controller, PK or sensor unit PLEASE WAIT V4.00 ->...
  • Page 102 10. Error Messages DKVs (except for the DKV PRO) In the event that an error occurs during operation, the Disklavier displays an appropriate error message. The following tables list and describe the supported messages. In the tables, “old” refers to models up to the DKVII, while “new” refers to models starting from the DKVIIXG.
  • Page 103 Messages related to the PK-CTL Board: Protect Function Message Condition Contents and countermeasures LOUD PEDAL The keyboard & sustain, soft/ The sustain pedal solenoid continually requires excessive shift pedal playback stop → drive voltage to function. → Check sustain pedal acoustic TIME OUT !! Press STOP button to reset adjustment...
  • Page 104: Error Messages

    DKV Pro Error Messages If an error message is displayed, refer to the following table for details on the correct action to table. Message Message in History Meaning Coorective Action “PIANO POWER OFF” KEY THERMISTOR Key-drive temperature sensor was Wait for temperature to drop before “(KEY THERMISTOR)”...
  • Page 105 II-53...
  • Page 106: Appendix 1

    Appendix 1 Hybrid Product Maintenance Handbook List 2000/7 * For the Piano Technician/Issued by Int’I piano service Model Number Stock Refer together with MHB for... MX100A (MX100B) – – MX80 – – DKV GP (wagon type) – – DKVII – –...
  • Page 107: Hybrid Product Service Manual List

    Hybrid Product Service Manual List 2000/7 * For the Electoric Technician / Issued by YCJ Customer service Model Number DKVPRO DC6SPRO-DCF3SSPRO 008112 MX100A 5 languages 008552 MX100A for German 008553 DKV GP (wagon type) 008554 MX80 008555 MX100B 008556 MX95 FOR AP 008557 DKV GP (wagon type)
  • Page 108: Appendix 2

    Appendix 2...