Kawai CN2 Service Manual
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CN2

Service Manual

Manufacturing Date December 2004
Kawai Musical Instruments
Manufacturing Co., Ltd.
SE977E-S0502

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Summary of Contents for Kawai CN2

  • Page 1: Service Manual

    Service Manual Manufacturing Date December 2004 Kawai Musical Instruments Manufacturing Co., Ltd. SE977E-S0502...
  • Page 2: Table Of Contents

    I Contents Specifications ..............2 P.W.B. KEP-126(10) Assembly[TOP] ......17 Hardware List ..............3 P.W.B. KEP-126(10) Assembly[BACK] ......18 Case Assembly ..............4 P.W.B. KEP-126 Circuit 1/4 ..........19 Stand Assembly ............... 5 P.W.B. KEP-126 Circuit 2/4 ..........20 Cheek Assembly .............. 6 P.W.B.
  • Page 3: Hardware List

    I Hardware List Type Size (A x B) Remarks Binding Head B-tite 3 x 8 Chromating Binding Head B-tite 3 x 12 Chromating Binding Head P-tite 3 x 10 Chromating (Black) Binding Head P-tite 3 x 16 Chromating (Black) Binding Head P-tite 4 x 8 Chromating Binding Head S-tite...
  • Page 4: Case Assembly

    I Case Assembly Code No. Parts Name Rosewood Cherry Mahogany 272657 272658 272659 Case Assy 813835 KAWAI sticker Screws (4x20) KEP-157 947946 Key Cover Rack (Left) 947947 Key Cover Rack (Right) Screws Screws 787785 LED Cap (3x8) (4x12) 947700 Head Phone Hook...
  • Page 5: Stand Assembly

    I Stand Assembly Screws (4x25) Screws (4x14) Screws (M6x25) Screws Screws (4x16) (M6x25) Screws Screws (4x14) Screws (4x25) (M6x25) Screws (4x14) Screws (M6x25) Screws (4x14) Screws (M6x25) Screws (M6x25) Plain Washer Spring Washer Screws (4x20) Screws Code No. Screws Parts Name (6x50) Rosewood Cherry...
  • Page 6: Cheek Assembly

    I Cheek Block Assembly Screws (3x10) Screws (3x10) KEP-152 Screws (3x10) Screws (3x12) KEP-156 Screws Screws (3x10) (3x10) Code No. Parts Name Rosewood Cherry Mahogany 811034 Slide Volume Cover Cloth HN604B 9x52 947940 947942 947944 Cheek Block (L) Screws 947941 947943 947945 Cheek Block (R)
  • Page 7: Key Cover Assembly

    I Key Cover Assembly Screws (M3x10) Screws (3x12) Screws (3x12) Screws (M3x10) Plain Washer Screws (3x6) Screws (3x12) Screws (3x8) Code No. Parts Name Rosewood Cherry Mahogany 947931 947932 947933 Key Cover Back Angle 941605 Key Cover Shaft 947934 947935 947934 Key Cover Handle 812601...
  • Page 8: Top Board Assembly

    (4x10) Code No. Screws Parts Name (3x16) Rosewood Cherry Mahogany 941584 Top Board Metal Rail 814698 Music Rack Felt t1x12x600 Black 947939 KAWAI Emblem II Screws 811105 813558 813559 Score Stopper (4x10) 947964 947965 947966 Music Rack 947973 947974 947975...
  • Page 9: Keyboard Unit (Rg88 Type)

    I Keyboard Unit (RG88 Type) <Keyboard Parts List> Code No. Parts Name Description Q’ty Code No. Parts Name Description Q’ty 814849 Complete Keyboard Unit 10 947907A Hammer Assy (White Key Low) Key No. 1- 15 814651 White Key (C) 947908A Hammer Assy (White Key Mid-Low) Key No.
  • Page 10: Keyboard Disassembling Procedure

    I Keyboard Disassembling Procedure First, remove the keyboard fixing screws (10 pcs.) at the bottom of the piano and slide the Keyboard unit backward. <How to take a key off> <How to take a hammer off> 1. Spread the key at fulcrum point and lift it up. (We recommend to use Snap Ring pliers. 1.
  • Page 11: Parts List Electronic Parts

    I Parts List Electronic Parts Code No. Parts Name Q'ty Parts Number Remarks Model 237699 P.W.B. Assy KEP-126 (10) 237700 P.W.B. Assy KEP-151-157 (2) PANEL,VOLUME,AMP,HP,MIDI,LED,INLET 120V 237701 P.W.B. Assy KEP-151-157 (3) PANEL,VOLUME,AMP,HP,MIDI,LED,INLET 230V 237347 P.W.B. Assy KKB-015 (1) KEYBOARD 814688 Transformer KT-027 813446...
  • Page 12 KEP-126 Code No. Parts Name Q'ty Parts Number Parts Address 812215 MB91101APF-G 814414 K022-FP MB87L8040 814435 Reset IC BD5245 FVE-TR 810368 Regulator NJM78L05UA-TE1 µPC2933AT-E1 813047 Regulator 812219 OP-AMP NJM4580E-T1 U13,14,18,22 237690 Flash ROM KP438-F9FP(A29L800TV-70) 814418 DRAM IC41LV16257-35T-EL 814416 SRAM UT62L2568LS-70LL/UT62L2568LS-70LLI 814690 KP437-MCFW(MR27V6402G-xxxTN) 814074...
  • Page 13: Kep-151-157

    KEP-151~157 Code No. Parts Name Q'ty Parts Number Parts Address Model KEP-151(PANEL) 808457 LOGIC HD74HC595P 813111 EL3105VRT/TR1-11(A) LED2,3,4,5,6,7 800625 Diode 1SS133T-77 D9,10,11,12,13,14 808345 Switch KSH0612AT / EVQ21305R SW1,2,3,4,5,6 KEP-152(VOLUME) 804978 Slide Volume RS30112AC00QA KEP-153(AMP) 812950 TA8221AH 812222 Headphone AMP LA6517 813252 Regulator PQ05RF21...
  • Page 14 Code No. Parts Name Q'ty Parts Number Parts Address Model KEP-154(HP) 812297 Retardant Resistor CPFS1/2CT26A68RJ R50,51,52,53 805764 EMI Coil SBT0160W L1,2,3,4 230V 802576 Phone Jack YKB21-5006/HTJ-064-04A JA1,2 KEP-155(MIDI) 806719 Photocoupler PC900V 810851 Transistor DTC143ESATP Q12,13 800625 Diode 1SS133T-77 811020 Surge Absorber ERZVA5D220 C54,55 808473...
  • Page 15: Cable Wiring Specification

    Q'ty 948020 PH-02-0250-RED KEP-156-CN9 Keyboard(RG88) for 120V area 812805 948021 PH-04-0200-YEL KEP-126-CN14 KEP-155-CN10 809170 for 230V area 947667 PH-09-0150-WHT KEP-126-CN18 KEP-153-CN2 for Australia 809171 948022 PH-11-0700-BRN KEP-126-CN17 KEP-151-CN14 813178 for England 948023 PH-15-0200-GRN KEP-126-CN13 Keyboard(RG88) — Power Switch Cable KEP-157-CN12...
  • Page 16: Block Diagram

    I Block Diagram KEP-152 KEP-154 KEP-155 KEP-151 PANEL HEADPHONE VOLUME MIDI SW & LED KEP-126 DIGITAL +5V FlashROM KP438-F9FP KEP-153 DIGITAL 8Mbit +3.3V REGULATOR µPC-2933 HEADPHONE AMP MUTE DRAM LA6517 4Mbit POWER AMP MUTE P2ROM TA8221AH KP437-MCFW SOUND SOURCE/ KS12-015 (12cm) 64Mbit TOUCH LSI MB91101A...
  • Page 17: Kep-126(10) Assembly[Top]

    I P.W.B. KEP-126 (10) Assembly [Top] – 17 –...
  • Page 18: Kep-126(10) Assembly[Back]

    I P.W.B. KEP-126 (10) Assembly [Back] – 18 –...
  • Page 19: Kep-126 Circuit 1/4

    I P.W.B. KEP-126 Circuit 1/4 – 19 –...
  • Page 20: Kep-126 Circuit 2/4

    I P.W.B. KEP-126 Circuit 2/4 – 20 –...
  • Page 21: Kep-126 Circuit 3/4

    I P.W.B. KEP-126 Circuit 3/4 – 21 –...
  • Page 22: Kep-126 Circuit 4/4

    I P.W.B. KEP-126 Circuit 4/4 – 22 –...
  • Page 23: Kep-151-157(2) Assembly

    I P.W.B. KEP-151– 157 (2) Assembly 102C 100uF 100uF 223C 3105 B5B-PH 1000uF /16V /25V 100uF /25V /25V 100uF 223C /16V JP5mm JP5mm S2B-PH 2SC5395 2SC5395 S11B-PH 100uF /25V 473C 223R 4.7uF /25V 10uF ICP-N10 /16V 103R S6B-PH 4.7uF JP5mm JP5mm 103R /25V...
  • Page 24: Kep-151-157(3) Assembly

    I P.W.B. KEP-151– 157 (3) Assembly 102C 100uF 100uF 223C 3105 B5B-PH 1000uF /16V /25V 100uF /25V /25V 100uF 223C /16V JP5mm JP5mm S2B-PH 2SC5395 2SC5395 S11B-PH 100uF /25V 473C 223R 4.7uF /25V 10uF ICP-N10 /16V 103R S6B-PH 4.7uF JP5mm JP5mm 103R /25V...
  • Page 25: Kep-151-157 Circuit 1/3

    I P.W.B. KEP-151 – 157 Circuit 1/3 – 25 –...
  • Page 26: Kep-151-157 Circuit 2/3

    I P.W.B. KEP-151 – 157 Circuit 2/3 – 26 –...
  • Page 27: Kep-151-157 Circuit 3/3

    I P.W.B. KEP-151 – 157 Circuit 3/3 RATED POWER VOLTAGE AC 110 – 120 V AC 220 – 240 V L1, L2, L3, L4 JP 5 mm SBT-0160W RATED POWER VOLTAGE AC 110 – 120 V AC 220 – 240 V JUMPER ADDRESS FUSE TYPE 234 02.5...
  • Page 28: Kkb-015 Circuit

    I P.W.B. KKB-015 Circuit ....c t i c t i – 28 –...
  • Page 29: Key Switch Matrix

    I Key Switch Matrix – 29 –...

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