Yamaha Disklavier E3 Series Maintenance Handbook
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Yamaha Disklavier E3 Series Maintenance Handbook

Upright piano grand piano
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Table of Contents

E3 Series
MAINTENANCE HANDBOOK
Upright Piano
Grand Piano

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Table of Contents
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Summary of Contents for Yamaha Disklavier E3 Series

  • Page 1 E3 Series MAINTENANCE HANDBOOK Upright Piano Grand Piano...

  • Page 3: Table Of Contents

    Introduction This booklet is the service manual for the E3 Series Disklavier sold from 2009. The E3 Series offers improved operation via its control unit’s simple panel design and superior soft playback, which is made possible through feedback control for full key stroke motion during playback in conjunction with the key sensors.

  • Page 4: Part Names

    1. Part Names ■Control Unit—Front Panel ①[ON/OFF] button ⑤CD eject button ⑨[SELECT] button ②USB port ⑥[PLAY/PAUSE] button ⑩Cursor/[ENTER] buttons ③Remote control sensor ⑦[STOP] button ⑪Display ④CD drive ⑧[RECORD] button ⑫Dial ■Control Unit—Rear Panel ①USB TO DEVICE port ⑤OMNI(SYNC) OUT jacks ⑨USB TO HOST port ②LAN port ⑥OMNI(SYNC) IN jacks...

  • Page 5: Unit Configuration And Operation

    2. Unit Configuration and Operation ・ Unit Layout Upright Piano ① ① ① Control Unit ⑥ ⑥ ② CSP Unit ⑤ ⑪ ③ Key Drive Unit ④ ⑤ ④ Key Sensor Unit ⑤ Hammer Sensor Unit ③ ⑥ Shank Stop Unit ⑦...
  • Page 6 1. Control Unit (DKC-800) Control Unit, without top cover The control unit manages all operations including those operated by the remote control. Information is also provided in the display according to the particular operation. The control unit sends and receives record and playback data with the CSP unit and stores performance data in the internal Flash memory (128MB).
  • Page 7 2. CSP(Central Signal Processor) Unit CSP unit, removed from key drive unit(GP) The CSP Unit is located under the high register side of the key drive unit and transmits playback data from the control unit to the drive unit. It also processes data received via the sensor unit and then transmits it as performance data to the control unit.
  • Page 8 Pedal drive unit, without cover(GP) The CSP unit converts MIDI playback data from the control unit to PWM data for the key drive (or pedal drive) unit, and relays it on to the drive sheet in the key drive unit. The FET drives the key solenoids. (Also the pedal solenoids are driven by FET.) Two temperature sensors for thermal protection are installed on the pedal drive unit and one sensor is on...
  • Page 9 4-2. Key Sensor Measurement Measurements are taken to normalize the positions between the keys (key shutter) and sensors, and detect values, which differ according to the light source/receiver conditions of each sensor. The measured values are saved in the CSP unit. The rest position and end position are measured with key sensor measurement.
  • Page 10 4-5. Hammer Sensor Unit Upright Piano Hammer Sensor Unit The hammer sensor consists of the hammer sensor sheet, optic fiber, light source/receiver. Hammer movement causes the metal shutter attached to the hammer shank of each key to break the LED light beam as it passes from the optic fiber to the sensor head.
  • Page 11 7. Speaker Box Speaker box, attached on beam(GP) Two specially designed speakers are set at an angle in the piano’s underside. The speakers are used to deliver the electronic accompaniment (ensemble) and CD playback and specifications are as follows. Speaker Specifications: Output: 20W Woofer: 10cm (3-15/16”) Tweeter: 2.2cm (7/8”)
  • Page 12 8. Unit Specification of Disklavier E3 series Grand Piano Upright piano GB1K A1, GC1, C1, GC2, C2 YUS1, U1 New：DKC800 ・Panel：CD-ROM Drive, Organic light emitting display, Controls & Switches (Power, Play/Pause, Stop, Rec, SELECT, Cursor/ENTER, Dial) Control Unit ・Internal memory : 128MB flash memory ・Ensemble tone : Advanced Wave Memory 2 (AWM2)

  • Page 13: Checking Functions

    3. Checking Functions Check functions when the piano is dampers return to their original delivered. position when the pedal is released. Inspecting functions prior to tuning during a customer visit is also effective in Shift Pedal : determining subsequent work. Make sure that the entire action shifts to the right (leaving one string 1.
  • Page 14 2. Electric Unit Section ・Turn the power on ・Preparation Check cable connections on the rear of Turn on the power switch on the the control unit. control unit. Play the supplied CD Open the CD drive by pressing the CD eject button.
  • Page 15 ・XG Tone Generator Functions Start playing on the keyboard. Using the procedure described above, Play all 88 keys (1 to 88) and operate select an ensemble song for playback each of the pedals. from the supplied CD. Press the [STOP] button. Listen to the ensemble tone generator playback from the speaker to check sound output.

  • Page 16: Tips On Tuning And Voicing The Piano

    4. Tips on Tuning and Regulating the Piano Upright Piano Before making adjustments inside of the piano, make sure that the control unit’s power is switched OFF. A. Removing exterior panels 1) Open the top board. 2) Remove the upper front board (there are no plates holding the upper front board stopper in place).
  • Page 17 C. E3 Pedal Adjustment The E3 pedal unit is mechanically the same as that on the DU1A. Procedures for adjusting it are the same as well. In the Disklavier, the pedal drive unit and sensor are located in the center of the pedal rod and a nut (B) on the topside of the drive unit is used to adjust the length of the rod.
  • Page 18 Grand Piano Switch the power OFF before doing any adjustments inside of the piano. Removing cabinet parts 1. Open the top (half open, fully open). 2. Remove the music desk. 3. Remove the fall board. Now the piano can be tuned the same as any other piano. 4.
  • Page 19 Cautions when regulating An acrylic shutter is attached to the underside of each key. When removing the keyboard, please take care not to damage the shutters. As described earlier, the E3 uses key sensors to detect key position. For this reason the condition of key regulation and the key stop rail will have an effect on key sensor detection.
  • Page 20 E3 Pedal Adjustment The E3 pedal unit is the same as used on the MKIII. Adjusting the unit is also the same. Pedal Adjustment The difference between the system used on the E3 and that used on an ordinary acoustic piano is the pedal rod on the pedal.

  • Page 21: Adjusting The Units

    5. Adjusting the units Upright Piano A.Adjusting the Key Sensor Unit When shipped from the factory, the key sensor unit is adjusted to the following positions and measurements. Clearance does not require adjusting under normal circumstances. However, when the unit is replaced, etc., the measurements should be adjusted to those given below. Position: Clearance between the bottom of the keyboard and the top of the key sensor unit chassis when the black keys on each...
  • Page 22 B. Adjusting the Hammer Sensor Unit By using service center mode, hammer sensor test/adjustment can be done (refer page 39, 4-2 Hmr Sensor Test). Service Center mode  4 – 2. Hmr Sensor Test Depress and lock the center pedal to enter the quiet mode first Two beeps (M1, M2) sound when hammer head is pushed toward back.
  • Page 23 C. Adjusting the Key Drive Unit When shipped from the factory, the key drive unit is adjusted to the following positions and measurements. Clearance does not require adjusting under normal circumstances. However, when the unit is replaced, etc., the measurements should be adjusted to those given below. Position: Use the three keys in the lower, upper,and middle registers of the key drive unit to check the clearance between the lower side...
  • Page 24 E. Adjusting the Hammer Shank Stopper Unit Step 1. Check if the hammer shank stopper do not disturb the dampers or hammers movement during normal playing.  OK Step 2 Hammer shank stopper height/lateral adjustment is necessary if any disturbing happens.
  • Page 25 Step 3. The screws on each shank stopper section give the fine hammer stop positioning and eliminate uneven- ness in the same section. Step 4. Normally the shank stopper position is set correctly in the factory. The height adjustment and lateral adjustment can be done as following drawings. ...
  • Page 26 Shank stopper unit adjustment When the quiet function is turned ON and turned OFF, both the shank stopper lever and the MD lever will stop by touching each stroke end. If either of them doesn’t touch its end, there is stroke loss of shank stopper move. It can be re-adjusted by using the adjust screw to get the maximum stroke distance.
  • Page 27 Grand Piano A. Adjusting the Hammer Sensor Unit 1. Service Center mode  4-2. Hmr Sensor Test 2. Push the quiet button on the switch box to enter the quiet mode. 3. Two beeps (M1, M2) sound when hammer head is raised.pushed toward back. M1 (the first beep): ON M2 (the second beep): ON –...
  • Page 28 B. Adjusting the Key Sensor Unit When shipped from the factory, the key sensor unit is adjusted to the following positions and measurements. Clearance does not require adjusting under normal circumstances. However, when the unit is replaced, etc., the measurements should be adjusted to those given below. Position: Clearance between the bottom of the keyboard and the top of the key sensor unit chassis when the black keys on each...
  • Page 29 C. Adjusting the Key Drive Unit When shipped from the factory, the key drive unit is adjusted to the following positions and measurements. Clearance does not require adjusting under normal circumstances. However, when the unit is replaced, etc., the measurements should be adjusted to those given below. Position: Use the three keys in the lower, upper, and middle registers of the key drive unit to check the clearance between the lower side of the keyboard rear end and the plunger head of the key drive unit.
  • Page 30 D. Adjusting the Pedal Drive Unit Adjusting the pedal drive unit is similar to pedal adjustment on an acoustic piano. Review the method for adjusting the acoustic pedal. Damper Pedal Adjustment: Acoustic Section Adjusting Play The section of travel when the pedal is depressed, before the damper is actually raised. Play should be one third of the pedal stroke.
  • Page 31 Use the hexagonal cap nut on the pedal rod to adjust. Adjusting the Stroke (amount of shift) The amount that the action shifts to the right when the pedal is fully depressed. Check the position where the music wire and hammer are parallel (next higher pitch). The amount of shift should position the hammer one string to the right leaving one string to the left of the hammer open.

  • Page 32: Ctrl Test Menu

    ６．CTRL Test Menu STOP & REC + POWER ■ ● Select a sheet to test with the UP/DOWN cursor buttons, =TEST MODE= enter the test mode of the sheet with the right cursor MODEL:E3 PIANO:UPS (↓) button, and select a test item. ←...
  • Page 33 6-1.CTRL SHEET TEST =TEST MODE= MODEL:E3 PIANO:UPS (↓) ↓↑ =TEST MODE= CTRL SHEET (↓,↑,→) ← → Displays the Version number of CTRL sheet. V2.00 Jan 22 2009 Model setting 800 ENG REC UP S DB51 [UP/DOWN]cursor: to select GP/UP, [REC]: “Quiet ON/OFF” (1) LED Test Check if LED lights up correctly.
  • Page 34 6-2. MC SHEET TEST =TEST MODE= MC SHEET (↓,↑,→) ← → Displays the version number of MC sheet. (1) MC SHEET Version Ver 0.2.0 (2) SDRAM Read Test (2) SDRAM Read Test Push PLAY Key OK ! (3) FLASH R/W Test (3) FLASH R/W Test Push PLAY Key OK !
  • Page 35 6-3. APE SHEET TEST =TEST MODE= APE SHEET (↓,↑,→) ← → 0:APE Sheet Version Displays the version number of APE sheet. APE V2.00 (20090123) (←,→) 1:DSP RAM R/W Test 1:DSP RAM R/W Test Press [PLAY] Press [PLAY] (←,→) RAM Test is OK ! (←,→) 2:DSP Flash Read test 2:DSP Flash Read test Press [PLAY]...

  • Page 36: Service Center Mode Menu

    ７．Service Center Mode Menu REC & SELECT + POWER Piano Service Center PLEASE WAIT PLEASE WAIT Piano Service Center CSP-E3 Ver2.02 UP HS S (ENT) 1.Piano Information 1-1.System Connection 2.Test Play 1-7-1.All Errors 1-2.Program Versions 1-7-2.All Warnings 3.Piano Calibration ↓ 1-3.Model Setting 1-7-3.Copy Log to USB 1-4.Key Drive Info...
  • Page 37 1) Piano information Indicates CSP Version No. Piano Service Center CSP-E3 Ver2.02 Piano type(GP/UP), and sensor type(KS/HS) is set automatically. UP HS S (ENT) 1.Piano Information 2.Test Play 3.Piano Calibration ↓ Indicates connection of each unit ← ASIC(PWM on KD Board):CSP to KD KD-PDL: Key Drive to Pedal Drive 1-1.System Connection ASIC OK/ KD PDLLine OK...
  • Page 38 2) Test play 1.Piano Information 2.Test Play 3.Piano Calibration ↓ ← 2-1.ppp scale [PLAY] to play/pause Plays softest key stroke scale. 2-2.repetition scale Play 2-3.pedal on/off ↓ Plays 5Hz strokes. 2-1.ppp scale [PLAY] to play/pause 2-2.repetition scale Play 2-3.pedal on/off ↓...
  • Page 39 3) Piano calibration 3)-1.Calibration - standard This operation needed only upright piano 1.Piano Information [ Pedal MIDI 7F Adjust ] 46F#,50A# are played. DEPRESS Loud/Soft pedal 2.Test Play (Till pedals are depressed ) 3.Piano Calibration ↓ Fully. and PUSH [REC] Depress loud/soft pedal fully, and push [REC] button 3-1.Calibration –...
  • Page 40 3)-4. Key ppp adjust 3)-4-1.Start ppp adjust 3-4-1.Start ppp Adjust 3-2.Pedal HP Adjust ]move/adj.[ > ]mode ←→↑↓ 3-4-2.CLEAR offset data 3-3.Calibration – Full [SELECT]speed [REC]save 3-4.Key ppp Adjust ↓ Start ]move/adj.[ > ]mode ←→↑↓ [SELECT]speed [REC]save The softest key stroke adjustment is started by enter button. KEY=01 OFFSET=0 ALL The buttons works in this adjustment as follows.
  • Page 41 3)-5-7. Key drive Loud pedal on, 3-5-8. Key drive Soft pedal on 3-5-5.Key Drive OFF Calibration to make the key- on table when loud pedal on. 3-5-7.Key Drive L-ON 3-5-8.Key Drive S-ON 3-5-5.Key Drive OFF Calibration to make the key- on table when soft pedal on. 3-5-7.Key Drive L-ON 3-5-8.Key Drive S-ON 4).

  • Page 42: Trouble Shooting/Points To Check

    8. Trouble Shooting/Points to Check 1.Error Messages Errors resulting from improper operation may cause the following messages to appear. The appropriate remedy should be carried out. Error Messages Situation Remedy SELECT REC TRACK! You tried to start recording with no Select the part to record before starting Part selected.
  • Page 43 2. Error Messages That Occur During Main Unit Operation Error messages may appear and the related section may stop operating if the drive unit temperature rises exceedingly, or components stop communicating with each other during operation. The appropriate remedy should be carried out. If one of the following messages appears along with “PRESS STOP KEY”...
  • Page 44 3.Error Messages that Occur During Measurement The following error messages may appear when an error occurs during or after measuring in the service center mode. Carry out the appropriate remedy. During Sensor Management Error Messages Situation Remedy E1:KS REST AD is too low The rest value is too low (too dark).
  • Page 45 During Key Measurment Error Messages Situation Remedy The sensor event value does not Check the key adjustment (pay particular match with the measurement (the attention to uneven keys in the balance section). relationship between small and large Check the key rail adjustment (the space is incompatible).
  • Page 46 • Check individual unit temperatures. 2. One or more keys does not playback. • When a poly switch, used to detect excessive current, engages, the corresponding key(s) stops operating. 3. Playback volume differs between keys. • The playback table is incompatible  Re-measure. * Uneven key balance in the balance section, which is related to key regulation and key rail adjustment, affects the measurement.

  • Page 47: Parts List

    11. Ｐarts List Upright Piano ① 33 34 ⑭ ⑯ ⑰ ⑱ ⑮ ⑫ ⑬ 25 26 ⑲⑳ ・ Control Unit ・ Key Shutter ⑩ ⑧ ②④ ⑪ ③⑨ ⑤ ⑥ ⑦ Electrical Parts Part Name Part Number Remarks Control Unit WN755500 DKC-800 CTRL Circuit Board...
  • Page 48 Part Name Part Number Remarks CSP Unit WQ087100 CSP Circuit Board WR673600 Key Drive Unit WQ5508X0 EKD1 Circuit Board WK726300 for key #57-88 EKD2 Circuit Board WK726500 for key #1-10 EKD3 Circuit Board WK726700 for key #11-42 EKD4 Circuit Board WN743300 for key #43-56 Solenoid Ass’y...
  • Page 49 ９．Ｐarts List Grand Piano ⑲ CONTROL UNIT ・ ⑩ ⑧ ② ⑪ ③ ④ ① ⑨ ⑤ ⑥ ⑦ KEY SHUTTER ・ ⑮ ⑯ ⑰ ⑱ ⑭ ⑫⑬...
  • Page 50 Electrical Parts Part Name Part Number Remarks WN755500 DKC-800 Control Unit CTRL Circuit Board WN507700 ２ MC Circuit Board WN507900 ３ APE Circuit Board WN507800 ４ USB Circuit Board WN757300 ５ PANEL Circuit Board WN757600 ６ ENCD Circuit Board WN757000 ７...
  • Page 51 Piano Parts Part Name Part Remarks Number Damper Pedal Lever T5902151 Spring, Damper Pedal Lever T5903081...

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