Kawai MP8 Service Manual
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Kawai MP8 Service Manual

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PROFESSIONAL STAGE PIANO
MP8

Service Manual

Manufacturing Date August 2005
Kawai Musical Instruments
Manufacturing Co., Ltd.
SE985E-S0509

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Summary of Contents for Kawai MP8

  • Page 1: Service Manual

    PROFESSIONAL STAGE PIANO Service Manual Manufacturing Date August 2005 Kawai Musical Instruments Manufacturing Co., Ltd. SE985E-S0509...

  • Page 2: Table Of Contents

    I Contents Specifications ..............3 P.W.B. KEP-191 Circuit 3/6 ..........23 Hardware List ..............4 P.W.B. KEP-191 Circuit 4/6 ..........24 Opening Procedure ............5 P.W.B. KEP-191 Circuit 5/6 ..........25 Case Assembly ..............6 P.W.B. KEP-191 Circuit 6/6 ..........26 Panel Assembly ...............

  • Page 3: Specifications

    I Specifications Keyboard 88 Keys with AWA Grand PRO Wooden-Key Action Max. Polyphony 192 Voices Sound Harmonic Imaging Technology 256 Sound Piano (28), Harpsichord (4), E. Piano (20), Clavi (4), Mallet (8), Drawbar (32), Organ (28), Accordion (4), Strings (20), Vocal (12), Brass (32), Pad&Synth (32), Bass (12), Guitar (16), DrumKit (4) Setup 256 Setup Memories...

  • Page 4: Hardware List

    I Hardware List Type Size Remarks +Binding Head Machine Screw M2.6 x 4 +Binding Head Machine Screw M3 x 6, 8 +Binding Head Machine Screw M4 x 8 Black Chromating +Binding Head Machine Screw with External Tab Washer M4 x 8 +Binding Head/S-Tite 3 x 6 +Binding Head/S-Tite...

  • Page 5: Opening Procedure

    I Opening Procedure M5 x 25 Q'ty 8 +Truss Head Machine Screw – 5 –...

  • Page 6: Case Assembly

    I Case Assembly No. Code No. Name Description Q'ty 944490 Key Bed 812626 Rubber Foot with Washer 948344 Key Slip Assy. 948257 Headphone Fitting 944500 EMI Spring Fitting Volume Nut Screws 815082 EMI Spring (M9) Screws (3x8) Screws 263352 Arm Assembly (L) (M4x8) Washer (M3x6)

  • Page 7: Panel Assembly

    I Panel Assembly No. Code No. Name Description Q'ty 811555 Key Top 813702 LCD Cover 272393 Slide Volume Cover Assembly 804969 Slide Volume Knob 811799 Rotary Volume Knob 814853 LCD PMC16021E8-SBL 813805 USB Connecter YKF45-0002 807643 XLR Jack YKF52-5003N 808473 MIDI Jack YKF51-5053 10 812442 MIDI Jack YKF51-5061...

  • Page 8: Keyboard Unit (Wk88 Type)

    I Keyboard Unit (WK88 Type) 12,13,14,15,16,17,18,19 2,3,4 i r t l i a p i l i r t l i a l i a l i a – 8 –...

  • Page 9: Keyboard Disassembling Procedure

    I Keyboard Disassembling Procedure l l u i t s r i f t i s l l u r i f l l u r i f t ' n . t f 1 + - e l i i n i r i f t f i...

  • Page 10: Electrical Parts List

    I Parts List Electrical Parts List Code No. Parts Name Q'ty Parts Number Remarks Model 237798 P.W.B. Assy KEP-191 (1) 237772 P.W.B. Assy KEP-099 (3) MIDI, USB 237802 P.W.B. Assy KEP-179~185 (2) PANEL, HP 237803 P.W.B. Assy KEP-186~189 (4) ANALOGS, A/D, JACK, POWER 100V 237804 P.W.B.

  • Page 11: Kep-191(1) Assembly Parts List

    P.W.B. KEP-191 (1) Assembly Parts List [TOP] Code No. Parts Name Q'ty Parts Number Parts Address 814750 MB91302APFF-G 814414 K022-FP U10, 12 810368 Voltage Regulator NJM78L05UA-TE1 µPC2933AT 813047 Voltage Regulator 237799 Flash ROM KP465-F9FP 814854 P2ROM KP446-MDFW 814437 P2ROM KP412-MDFW 814438 P2ROM KP413-MDFW...

  • Page 12: Kep-179~185(2) Assembly Parts List

    P.W.B. KEP-179~185 (2) Assembly Parts List Code No. Parts Name Q'ty Parts Number Parts Address KEP-179 (Panel Left) 813111 EL3105VRT/TR1-11 (A) LED1, 2, 3, 4, 5, 6, 11, 12 814696 GL2HD6 LED7, 8, 9, 10 812662 GL2EG6 LED13, 14, 15, 16 813838 SPR-325MVW LED17, 18, 19, 20...

  • Page 13: P.w.b. Kep-186~189 (4) (5) (6) Assembly Parts List

    P.W.B. KEP-186~189 (4) (5) (6) Assembly Parts List Code No. Parts Name Q'ty Parts Number Parts Address Model KEP-186 (A/D Joint, ANALOG) 803995 LOGIC TC74HC4051AP U2, 4 808457 LOGIC HD74HC595P 808098 OP-AMP NJM3404AD 809426 OP-AMP BA15532 U6, 7, 9, 10 812222 OP-AMP LA6517...
  • Page 14 Code No. Parts Name Q'ty Parts Number Parts Address Model KEP-189 (Power) 811487 DC/DC Converter M5291P 811018 Reset IC PST600C 802889 Voltage Regulator AN7815F 802890 Voltage Regulator AN7915F 811589 Transistor 2SA1641S/T 805850 Transistor DTA143ES 808952 Bridge Diode DBF40C 805852 Diode 1SR139-100 D2, 3, 4, 5, 6 811591...

  • Page 15: Kep-099 (3) Assembly Parts List

    P.W.B. KEP-099 (3) Assembly Parts List Code No. Parts Name Q'ty Parts Number Parts Address 814016 USB MPU M38K07M4-056HP 808932 Photocoupler PC400T 811645 Reset PST575CMT 810920 Transistor DTC143EKA 809834 Diode HSK120TR 813928 X’tal Resonator SMD-49 6.0MHz/CX-49G 6.0MHz 809845 Electrolytic Capacitor ECEV1CS100SR 813358 Chip Bead...

  • Page 16: Cable Wiring Specification

    I Cable Wiring Specification KEP-180 KEP-179 KEP-181 KEP-182 KEP-189 Ferrite Core Vinyle Binder KEP-187 KEP-186 BROWN KEP-191 Binder BLUE KEP-183 GREEN KEP-099 KEP-188 Ferrite Clump Inshlock Tie Filament Tape Alminum Tape (50 x 25) Alminum Tape (50 x 100) Gasket KEP-185 Parts code Parts name...

  • Page 17: Block Diagram

    I Block Diagram KEP-099 KEP-189 PRIMARY Power FUSE Switch P.S. for DIGITAL M38K07M4 RECTIFIER TRANS -056HP FORMER P.S. for AC Inlet KT-026 MIDI ANALOG Pitch Bend ±15V 6MHz Modulation P.S. for RECTIFIER MUTE KEP-188 +22V AC IN Contrast DAMPER DIGITAL +5V DIGITAL EXPRESSION FlashROM(8M)

  • Page 18: Kep-191 (1) Assembly [Top]

    I P.W.B. KEP-191 (1) Assembly [TOP] 102C 102C 102C 104C 104C 104C 103C B2PS-VH 102C 102R 330 330 330 KP412-MDFW 0R0R 0R0R 0R0R KP465-F9FP PLT09H-2003R A29L800TV-70 104C 102C 332R KP413-MDFW 105R 102R 332R KP446-MDFW 103R 103R 103R 102C 150C 101R 102R 102R 102R...

  • Page 19: Kep-191 (1) Assembly [Back]

    I P.W.B. KEP-191 (1) Assembly [Back] 104C 106C 104C 104C 104C 103R 0R0R 0R0R 102C 104C 104C 104C 104C 102R 103R 106C 102C 103R 102R 106C 103R 104C 222R 104C 104C 102R 103R 222R 104C 102R 102C 104C 104C 102C 104C 103R 104C...

  • Page 20: P.w.b. Kep-191 Circuit 1/6

    I P.W.B. KEP-191 Circuit 1/6 – 21 –...

  • Page 21: P.w.b. Kep-191 Circuit 2/6

    I P.W.B. KEP-191 Circuit 2/6 – 22 –...

  • Page 22: P.w.b. Kep-191 Circuit 3/6

    I P.W.B. KEP-191 Circuit 3/6 – 23 –...

  • Page 23: P.w.b. Kep-191 Circuit 4/6

    I P.W.B. KEP-191 Circuit 4/6 – 24 –...

  • Page 24: P.w.b. Kep-191 Circuit 5/6

    I P.W.B. KEP-191 Circuit 5/6 – 25 –...

  • Page 25: P.w.b. Kep-191 Circuit 6/6

    I P.W.B. KEP-191 Circuit 6/6 – 26 –...

  • Page 26: Kep-179-185 (2) Assembly

    I P.W.B. KEP-179 – 185 (2) Assembly Name KEP-179 ZONE SELECT 4 ZONE SELECT 3 ZONE SELECT 2 ZONE SELECT 1 ７４ＨＣ５９５Ｐ EFFECT ZONE ON/OFF 1 １ＳＳ１３３ ＫＳＨ ＫＳＨ ＫＳＨ ＫＳＨ ＫＳＨ ＫＳＨ ＫＳＨ ＫＳＨ ０６１２Ａ ０６１２Ａ ０６１２Ａ ０６１２Ａ ０６１２Ａ ０６１２Ａ...

  • Page 27: P.w.b. Kep-179-185 Circuit 1/2

    I P.W.B. KEP-179 – 185 Circuit 1/2 Name Name KEP-179 KEP-181 ZONE SELECT 4 SW18 VALUE DOWN ZONE SELECT 3 SW19 SOUND ZONE SELECT 2 SW20 SETUP ZONE SELECT 1 SW21 STORE EFFECT SW22 SYSTEM SW23 TRANSPOSE ZONE ON/OFF 1 SW24 VALUE UP ZONE ON/OFF 2 SW25 PIANO...

  • Page 28: P.w.b. Kep-179-185 Circuit 2/2

    I P.W.B. KEP-179 – 185 Circuit 2/2 – 29 –...

  • Page 29: Kep-186-189 (4) Assembly

    I P.W.B. KEP-186 – 189 (4) Assembly B4B-PH 473C 102R 5mmJ 5mmJ 221R 222R 222R 5mmJ 221R 5mmJ 221R 102C 102C 473C 221R 5mmJ 5mmJ 473C 5mmJ 104R 5mmJ 5mmJ 1SR139 1SR139×4 UL Bond 2200μF 1000μF 470μF 6.3V 10mmJ 473C UL Bond 2200μF 10mmJ...

  • Page 30: Kep-186-189 (5) Assembly

    I P.W.B. KEP-186 – 189 (5) Assembly B4B-PH 473C 102R 5mmJ 5mmJ 221R 222R 222R 5mmJ 221R 5mmJ 221R 102C 102C 473C 221R 5mmJ 5mmJ 473C 5mmJ 104R 5mmJ 5mmJ 1SR139 1SR139×4 UL Bond 2200μF 1000μF 25Ｖ 470μF 6.3Ｖ 10mmJ 25Ｖ...

  • Page 31: Kep-186-189 (6) Assembly

    I P.W.B. KEP-186 – 189 (6) Assembly B4B-PH 473C 102R 5mmJ 5mmJ 221R 222R 222R 5mmJ 221R 5mmJ 221R 102C 102C 473C 221R 5mmJ 5mmJ 473C 5mmJ 104R 5mmJ 5mmJ 1SR139 1SR139×4 UL Bond 2200μF 1000μF 470μF 6.3V PLA10AN 473C 1030R7R2 UL Bond 2200μF...

  • Page 32: P.w.b. Kep-186-189 Circuit 1/3

    I P.W.B. KEP-186 – 189 Circuit 1/3 – 33 –...

  • Page 33: P.w.b. Kep-186-189 Circuit 2/3

    I P.W.B. KEP-186 – 189 Circuit 2/3 – 34 –...

  • Page 34: P.w.b. Kep-186-189 Circuit 3/3

    I P.W.B. KEP-186 – 189 Circuit 3/3 – 35 –...

  • Page 35: Kep-099 (3) Assembly

    IP.W.B. KEP-099 (3) Assembly – 36 –...

  • Page 36: Kep-099 Circuit

    I P.W.B. KEP-099 Circuit – 37 –...

  • Page 37: P.w.b. Kkb-008 Circuit

    I P.W.B. KKB-008 Circuit ....c t i c t i – 38 –...

  • Page 38: Key Switch Matrix

    I Key Switch Matrix – 39 –...

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