Yamaha DGX-500 Keyboard Service Manual & Repair Guide

SERVICE MANUAL PK 001685 1.452K-028 Printed in Japan ’02.08 HAMAMATSU, JAPAN CONTENTS SPECIFICATIONS ................................................ 3/4 PANEL LAYOUT .................................... 5 CIRCUIT BOARD LAYOUT & WIRING .............................................. 7 BLOCK DIAGRAM .......................... 10 DISASSEMBLY PROCEDURE ............................ 11 LSI PIN DESCRIPTION ................................ 18 IC BLOCK DIAGRAM .................................. 21 CIRCUIT BOARDS ....................................... 22 TEST PROGRAM ............................. 30/32 DATA BACKUP & INITIALIZATION ......................................... 35 MIDI IMPLEMENTATION CHART ......................................... 36 OVERALL CIRCUIT DIAGRAM PARTS LIST This document is printed on chlorine free (ECF) paper. （目次）（総合仕様）（パネルレイアウト）（ユニットレイアウト＆結線図）（ブロックダイアグラム）（分解手順）（LSI端子機能表）（ICブロック図）（シート基板図）（テストプログラム）（バックアップデータと初期化）（総回路図）このサービスマニュアルはエコパルプ（ECF：無塩素系漂白パルプ）を使用しています。 20020801-88000

DGX-500 2 IMPORTANT NOTICE This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and under- stood by the users, and have therefore not been restated. WARNING : Failure to follow appropriate service and safety procedures when servicing this product may result in per- sonal injury, destruction of expensive components and failure of the product to perform as specified. For these reasons, we advise all Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer or the appointed service representative. IMPORTANT : This presentation or sale of this manual to any individual or firm does not constitute authorization certifi- cation, recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form. The data provided is belived 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. Modifications are, therefore, inevitable and changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributor’s Service Division. WARNING : Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus.) IMPORTANT : Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit. WARNING: CHEMICAL CONTENT NOTICE! The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (Where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm. DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SO EVER! Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux vapor! If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. WARNING Components having special characteristics are marked and must be replaced with parts having specification equal to those originally installed. 印の商品は、安全を維持するために重要な部品です。交換する場合は、安全のために必ず指定の部品をご使用下さい。

DGX-500 3 SPECIFICATIONS Keyboards • 88 standard-size keys (A-1 - C7), with Touch Response and Dynamic Filter. Display • Large multi-function LCD display (backlit) Setup • STANDBY/ON • MASTER VOLUME : MIN - MAX Panel Controls • OVERALL (L, R), SONG, VOICE, STYLE, M.D.B., PORTABLE GRAND, SPLIT, METRONOME, [0]-[9], [+](YES), [-](NO), DEMO, TOUCH, HARMONY, DUAL, DICTIONARY, L, R, TEMPO/TAP Voice • 122 panel voices + 12 drum kits + 480 XG voices + 5 DJ voices • Polyphony : 32 STYLE • 135 styles + Disk • Accompaniment Control : ACMP, SYNC STOP, SYNC START, START/STOP, INTRO ENDING, MAIN/AUTO FILL • Fingering : Multi fingering • Accompaniment Volume Music Database • 208 Yamaha Educational Suite • Dictionary • Lesson 1-4 One Touch Setting • Voice (for each style or song) Overall controls Effects • Reverb : 8 types • DSP : 38 types • Harmony : 26 types Song • 100 Songs + 5 User Songs • Song Clear, Track Clear Recording • Song User Song : 5 Songs Recording Tracks : 1, 2, 3, 4, 5, Accompaniment Disk • Song Playback • Save • Load • Delete • Format MIDI • Initial Send • Local on/off Auxiliary jacks • PHONES/OUTPUT, DC IN 12V, MIDI IN/OUT, FOOT SWITCH Amplifier • 6.0W + 6.0W Speakers • 12cm x 2 + 3cm x 2 Power Consumption • UL / CSA : 19W (when using PA-5D or PA-5C power adaptor) : 16W (when using PA-51 power adaptor) • CE : 18W (when using PA-5D or PA-5C power adaptor) • Chinese Power Supply • Adaptor : Yamaha PA-51 AC power adaptor (Chinese model) • Batteries : Six “D” size, R20P (LR20) or equivalent batteries Dimensions (W x D x H) • 1,380 x 430 x 173 mm (54-1/3" x 16-15/16" x 6-3/4") Weight • 14 kg (30 lbs., 14 oz.) Stand: 7.6 kg (16 lbs., 12.) Supplied Accessories • Keyboard stand Footswitch Music Rest Data Disk Owner’s Manual Song Book • Transpose • Accompaniment/Song Volume • Metronome Volume • PITCH BEND RANGE • Tuning • MIDI • Harmony • Reverb • DSP • Grade • Lesson Track L/R • Track Octave Optional Accessories • Headohones : HPE-150 • AC power adapter : PA-5D, PA-5C

DGX-500 4 総合仕様鍵盤� ・�ギューサイズ A ～C ：タッチスポスディスプレイ� ・� 液ディスプイバックイトきセットアップ� ・� スイッチ・� コトー：～コントロール� ・� メニュー[L] [R]ボタ、SONGボタ、VOICEボタ、 STYLEボタ、M D B ボタ、グドピアノボタ、スプットボタ、メトノームボタ、ボタ [ ] ～[ ] [＋] [－]、デモボタ、タッチスポスボタ、ハーモニーボタ、デュアボタ、コードディクシナーボタ、[ ] [右 ]ボタ、テポタップボタ楽器� ・� ＋ドムキット＋ XG ＋ DJ 自動伴奏� ・� ＋ディスク・� コトー：、シクストップ、シクスタート、スタートストップ、イトエディグ、メイフィイ・� マチフィガグ・� YES ( レッスン機能� ) ・� ディクシナー・�ッス～ワンタッチセッティング� 全体設定� エフェクト� ・�バーブ：・� DSP：・� ハーモニー：ソング� ・� ソグ＋ーザーソグ・� ソグクア、トッククア・� ソグ録音� ・� ソグーザーソグ：トック：ディスク� ・� ソグ、セーブ、ード、デート、フォーマット、右ガイドトック、SMF セーブード MIDI ・� クック・�ーカオオフ・� イニシャセド付属端子� ・� MIDI IN OUT、FOOTSWITCH、PHONES OUTPUT、 DC IN V アンプ実用最大出力� ・� アダプター PA D ： W＋ W EIAJ スピーカー� ・� cm × ＋ cm × 電源� ・� アダプター： PA D ・� ： V× 電池寿命� ・� アカでの：デモを、、のり返しコトーの位の消費電力� ・� アダプター PA D ： W 寸法� (幅×奥×高�mm) ・� × × 質量� (kg) ・� まず同梱スタンド：� 付属品� ・� アダプター、て、シート、扱、ソグブック、保、スタド、フットスイッチ、フッピーディスク・� トスポーズ・� ハーモニー・� スタイソグ・�バーブ・� メトノーム・� DSP ・� ピッチベドジ・� オオフ・� チューニグ・�ッストック右・� MIDI ・� トックオクターブ

DGX-500 5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 PANEL LAYOUT Front panel Power switch ([STANDBY/ON]) [MASTER VOLUME] dial [TOUCH] button [HARMONY] button [SPLIT] button [DUAL] and [SETTING / ] buttons Overall (left, right) buttons [DEMO] button LESSON [L] (Left) and [R] (Right) buttons [DICTIONARY] button [METRONOME] button [PORTABLE GRAND] button [SONG] button [STYLE] button [VOICE] button [M.D.B.] (MUSIC DATABASE) button Numeric keypad, [+/YES] and [-/NO] buttons [ACMP] / [A-B REPEAT] button [SYNC STOP] button [SYNC START] / [PAUSE] button [START/STOP] button [INTRO ENDING] / [ REW] button [MAIN/AUTO FILL] / [FF ] button [TEMPO/TAP] button SONG MEMORY [REC], [1]~[5], [A] buttons REGISTRATION MEMORY [MEMORY], [1], [2], [BANK] buttons 27 28 29 Disk Drive Disk control buttons [PITCH BEND] wheel （パネルレイアウト）（フロントパネル）（[電源入 / 切] スイッチ）（[全体音量] コントロール）（[タッチレスポンス] ボタン）（[ハーモニー] ボタン）（[スプリット] ボタン）（[デュアル], [設定 / ] ボタン）（メニュー[L], [R] ボタン）（[デモ]ボタン）（レッスン[ 左手], [ 右手] ボタン）（[コードディクショナリー] ボタン）（[メトロノーム] ボタン）（[グランドピアノ] ボタン）（[SONG] ボタン）（[STYLE] ボタン）（[VOICE] ボタン）（[M.D.B.](ミュージックデータベース) ボタン）（数字ボタン[0]～[9], [ ＋], [ －]）（[伴奏オン / オフ]／[くり返し練習] ボタン）（[シンクロストップ] ボタン）（[シンクロスタート]／[一時停止] ボタン）（[スタート / ストップ] ボタン）（[イントロエンディング]／[巻戻し] ボタン）（[メイン / フィルイン]／[早送り] ボタン）（[テンポ / タップ] ボタン）（ソングメモリー[録音], [1]～[5], [A] ボタン）（レジストレーションメモリー [メモリー], [1],[2], [ バンク] ボタン）（ディスクドライブ）（ディスクコントロールボタン）（[ピッチベンド] ホイール）

DGX-500 6 30 31 32 33 [MIDI IN], [MIDI OUT] terminals [FOOT SWITCH] jack [PHONES/OUTPUT] jack [DC IN 12V] jack Rear panel （[MIDI IN]/[MIDI OUT] 端子）（[フットスイッチ] 端子）（[ヘッドフォン / 外部出力] 端子）（[電源アダプター] 端子）（リアパネル）

DGX-500 7 [PN- WH008] PB VR SW MK-88L MK-88C AM [AM-WH998] [PN-WH007] [PN-WH005] [AM-WH003] [AM-WH008] [AM-WH002] [90] [160] [160] [160] [PN-WH006] [300] [L70] Speaker (Tweeter (L)) Speaker (Woofer (L)) Speaker (Tweeter (R)) TW -L TW -R Speaker (Woofer (R)) [M9] [M5] [M5] [M8] [M7] [M6] MK-88H [30] [AM-WH999] [290] MKS6 [PN- WH008] PB VR SW AM [AM-WH998] [PN-WH007] [PN-WH005] [AM-WH003] [AM-WH008] [AM-WH002] [PN-WH006] [300] [L70] Speaker (Tweeter (L)) Speaker (Tweeter (R)) TW -L TW -R [AM-WH999] [PN-WH001] [PN-WH002] [WH200] [290] DM Upper case side Lower case side Upper case side CIRCUIT BOARD LAYOUT & WIRING （上ケース側）（下ケース側）（上ケース側）（ユニットレイアウト＆結線図）

DGX-500 8 MK-88L MK-88C [M9] [M5] [M5] [90] [M8] [M6] [M7] MK-88H MKS6 [30] [PN- WH008] PB VR SW AM [AM-WH998] [PN-WH007] [PN-WH006] [PN-WH005] [AM-WH003] [AM-WH008] [AM-WH002] [L70] Speaker (Tweeter (L)) Speaker (Tweeter (R)) FDD TW -L TW -R [PN-WH004] [AM-WH999] [300] [WH200] [290] [PN-WH001] [PN-WH002] LCD VR SW [PN-WH006] [PN-WH005] [PN-WH007] [L70] [PN-WH004] [WH200] [PN-WH001] [PN-WH002] LCD PNL PN Back light assembly （バックライトAss'y）� Upper case side Upper case side Lower case side （上ケース側）（上ケース側）（下ケース側）

DGX-500 9 Location 290 300 L70 30 90 160 M5 M6 M7 M8 M9 AM-WH002 AM-WH003 AM-WH008 AM-WH998 AM-WH999 WH200 PN-WH001 PN-WH002 PN-WH004 PN-WH005 PN-WH006 PN-WH007 PN-WH008 *The parts with “--” in “Part No.” are not available as spare pats. *1: Edge mark is adjusted to Pin 1 mark ( mark). *2: Edge mark is adjusted to (+). *3: It tightens it with the shield case of the DM circuit board. *4: Be sure to make a correct match when connecting MKS6 (CN1) and DM (CN102). Connecting the connectors in the wrong way around may cause damage to the MKS6 circuit board. （*上記束線のうち、部品番号に"--"がついている部品は、サービス部品として準備されていません。）� � （*4: MKS6（CN1） -DM（CN102）のコネクタは逆に挿入しない！逆に挿入するとMKS6シートを破壊する可能性があります。）� � （*3: DMシートのシールドケースに共締めします。）� � （*1: エッジマークが1ピン（△）側です。）� � （*2: エッジマークが（＋）です。）� � V9103500 V7189000 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- FDD FDPS BLT KB BAT SP MK 88H 88C-B 88C-N 88L PS DJ GND TW TW LCD PN1 PN2 PN3 VR2 VR1 SW PB DM-CN301 AM-CN908 Back light assembly MKS6-CN1 Battery Speaker (Woofer) MK-88C MK-88C MKS6-CN5 MKS6-CN4 MKS6-CN2 MKS6-CN3 AM-CN901 AM-CN602 AM-EP2 AM-CN909 AM-CN910 LCD-CN1 PN-CN1 PN-CN2 PN-CN3 VR-CN5 VR-CN6 SW-CN7 PB-CN8 *1 *1 *1 *1 *1 *1 *1 *1 *1 *1 *1 *1 *1 *1 *1 *1 *1 *3 *2 *2 *1 *1 *1 *1 *1 *1 *1 *4 *4 FDD-CN1 FDD-CN2 AM-CN907 DM-CN102 AM-CN903 AM-CN802 MK-88L MK-88H MK-88H MK-88C MK-88C MK-88L DM-CN101 DM-CN601 Shield box U TW-L TW-R DM-CN715 DM-CN701 DM-CN702 PNL-CN4 AM-CN801 DM-CN501 AM-CN902 DM-CN103 34P 2P-4P 2P 7P L=500 2P 4P L=760/910 12P 4P 6P 12P 5P 7P 6P 1P 2P 2P 12P 8P L=200 9P L=215 12P L=370 5P L=180 6P L=360 4P L=100 3P L=900 (V718810) (V998110) (V880710) (V880700) (V763930) (V763940) (V763950) (V763960) (V763970) (V718820) (V718830) (V997640) (V718880) (V718880) (V718800) (V881570) (V881610) (V881750) (V890360) (V881760) (V890370) (V880740) Part No. Connector Assembly Destination Remarks （注意：一度剥がしたフィラメントテープは、取り外す前と同じように、取り付けてください。）� Caution: Be sure to attach the removed filament tape just as it was before removal.

DGX-500 10 BLOCK DIAGRAM MIDI IN OUT FOOT SWITCH RESET 8.4672 MHz 32M ROM PROGRAM 64M ROM WAVE 1M SRAM FDC 4M DRAM 16MHz SWX00B MIDI I/F RXD0 TXD0 ADIN AN0 VOLTAGE DAC LPF BATTERY (1.5V x 6) DC IN 12V +5R PHONES/ OUTPUT SP-L SP-R WOOFER WOOFER TWEETER TWEETER +5D STANDBY/ON C-BUS S-BUS D0-15,A0-21 D0-15,A0-21 +5R +5V REG +3.3D VOLTAGE LED SW MATRIX SW MATRIX LCD DRIVER LCD DISPLAY FDD LCD BACK LIGHT ASSEMBLY LD1 MASTER VOLUME PITCH BEND AN1 PN MK-88L MKS6 KEYBOARD SW MATRIX DM AM PNL LCD CN3 (12P) CN2 (9P) CN3 (5P) CN4 (6P) CN2 (12P) (5P) (4P) CN5 (4P) CN1 (7P) CN102 (7P) CN1 (8P) CN701 (8P) CN702 (9P) CN4 (12P) IC1 (80P) LD1 IC304 (64P) IC301 (32P) 1M SRAM IC302 (32P) IC303 (42P) IC101 (168P) IC601 (6P) CN602 (6P) CN8 (3P) CN103 (3P) VR2 JK601 JK603 JK602 CN601 (6P) IC103 (3P) IC201 (42P) IC204 (44P) 12,31 PDT [0-7], PDT [ 11-12 ] CN1 (12P) CN301 (34P) CN908 (2P) CN7 (4P) CN902 (4P) CN907 (2P) SW99 CL304 12,31 15 16 30,31 23,39,44 16 16 8,9, 12-19 2 CMA [1-21] CMD [0-15] SMA [0-21] SMD [0-15] SMA [0-8] SMD [0-15] CMA [1-17] CMD [8-15] CMA [1-17] CMD [0-7] CMA [0-1] CMD [8-15] 33,34,35, 47,48 25,44,45,46 22 1,6,22 39,40 +5D +3.3D +3.3D +5D +3.3D TRKO, IDX, RDD, WG, WD TXD1, LSIIC, RXD1, SCLKI PDT [0-7] PAD [0-2], PRD, PWR, PCS, PF [5], LED CN715 (12P) LED +5D CL101 +5D 6 4 3 1 1 9,10 21,126,154,155 2,73,145-147, 150-152 135-142 128,129, 135-142 46 CS0 11 22 24 30 22 24 30 153 20 156 14 15 158,163,164 5,6,7 8 8 4 1 1 1 3 7 3 5 L R 3 IC501 (8P) IC502 (8P) IC503 (3P) CN501 (6P) CN6 (6P) CN5 (5P) CN801 (5P) CN802 (4P) CN909 (2P) CN910 (2P) CN802 (4P) CN101 (7P) CN901 (7P) VR1 ICN 1 2 PB DO0, WCLK, QCLK SI, LRCK, CLK 4 2 +5A VR TW -L TW -R POWER AMP IC801 (18P) CN903 (2P) + - 2 5 6 L Vcc R 3 1 2 JK901 JK801 7 15,17 11, 18 12,14 DC/DC CONVERTER IC902 (8P) 1 4,13,16 +3.3V REG IC102 (3P) AM SW C [ 1-16 ] S [ 1-40 ] PAD [0-5], PDT [0-5] KEYBOARD (16N) 88key MK-88C KEYBOARD SW MATRIX MK-88H KEYBOARD SW MATRIX CL1 16,39 17,38 14,15 18,22,27,28 +5D 5MHz +5D 22 32 32 CS2 OE ICN CS2 OE ICN 93 CS1 11 13 132 CS2 OE SWE SRAS SCAS SCS0 88 42 43 44 74 4,7,18,35,49, 61,77,91,148 119,133,143,161 SWE SRAS SCAS CPU IC1 (44P) N [ 11-16 ] , N [ 21-26 ] N [ 11-16 ] , N [ 21-26 ] B [12-15] N [11-16], N [21-26] B [6-11] B [ 1-5 ] (12P) (6P) (12P) (12P) (12P) (12P) (12P) (12P) (12P) (12P) (12P) (12P) (12P) (12P) (AC Adapter use) +12V TH601 +5V REG IC901 (3P) 3 28CA1-8823321 （ブロックダイアグラム）

Yamaha DGX-500 Keyboard Service Manual & Repair Guide

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