Yamaha Portable grand DGX-640W Service Manual

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As for an optional LP-7A pedal unit,

refer to the LP-7A/LP-5A service manual

(CL 001812 ).

001848

DGX-640W

CONTENTS

SPECIFICATIONS ..................................................................... 3

PANEL LAYOUT ....................................................................... 4

CIRCUIT BOARD LAYOUT& WIRING ...................................... 6

BLOCK DIAGRAM.................................................................... 8

DISASSEMBLY PROCEDURE ................................................ 9

LSI PIN DESCRIPTION .......................................................... 20

CIRCUIT BOARDS .................................................................. 24

TEST PROGRAM .................................................................... 33

BACKUP and INITIALIZATION ................................................ 38

USER DATA BACKUP ............................................................. 39

SYSTEM BOOTING FLOW CHART ....................................... 45

PARTS LIST

OVERALL CIRCUIT DIAGRAM

SERVICE MANUAL

DGX-640C

HAMAMATSU, JAPAN

'10.04

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Summary of Contents for Yamaha Portable grand DGX-640W

Page 1 USER DATA BACKUP ............. 39 SYSTEM BOOTING FLOW CHART ........45 As for an optional LP-7A pedal unit, refer to the LP-7A/LP-5A service manual PARTS LIST (CL 001812 ). OVERALL CIRCUIT DIAGRAM 001848 HAMAMATSU, JAPAN Copyright (c) Yamaha Corporation. All rights reserved. ’10.04...
Page 2 DGX-640W/DGX-640C...
Page 3 DGX-640W/DGX-640C ■ SPECIFICATIONS...
Page 4 DGX-640W/DGX-640C ■ PANEL LAYOUT...
Page 5 DGX-640W/DGX-640C...
Page 6 DGX-640W/DGX-640C ■ CIRCUIT BOARD LAYOUT&WIRING Ferrite Core Ferrite Core Twist 10 places( )
Page 7 DGX-640W/DGX-640C so that the e so that the red wire so that the white wire...
Page 8 〜...
Page 9 DGX-640W/DGX-640C ■ DISASSEMBLY PROCEDURE CAUTION: Flat cable’s contacts are visible from the back. Pay attention not to insert and install the cable to the connector inversely. (Photo.1) Be surto attach the removed ﬁ lament tape just as it was before removal.
Page 10 DGX-640W/DGX-640C Circuit Boards and Assemblies (Upper Case Part) (Time required: About 9 minutes) Separate the upper case assembly from the bottom board assembly. (See procedure 1.) After removing the upper case assembly, remove the following screws. Each circuit board and assembly can then be removed.
Page 11 DGX-640W/DGX-640C PB Circuit Board PSW Circuit Board DJACK Circuit Board PJK Circuit Board PNR Circuit Board & (*3) ENC Circuit Board (*6) (*1) MVR Circuit Board (*1) USB Circuit Board (*4) MKO Circuit Board (*5) 1, Table 1 Fig.3-3 Fig.3-4 Fig.3-5...
Page 12 DGX-640W/DGX-640C LCD Assembly PNL Circuit Board (Time required: About 10 minutes) (Time required: About 12 minutes) Separate the upper case assembly from the bottom board Separate the upper case assembly from the bottom board assembly. (See procedure 1.) assembly. (See procedure 1.) Remove the DM circuit board.
Page 13 DGX-640W/DGX-640C GHL Keyboard Assembly Speaker (Woofer) (Time required: About 12 minutes) (Time required: About 9 minutes) Separate the upper case assembly from the bottom board Separate the bottom board assembly from the upper case assembly. (See procedure 1.) assembly. (See procedure 1.) Remove the MKO circuit board (holder).
Page 14 DGX-640W/DGX-640C Disassembling the Keyboard Assembly When removing white key assembly and black key assembly, be White key assembly and black key assembly careful not to allow grease to attach to the circuit board and Remove the four (4) screws marked [270A] ﬁ xing a rubber contacts, etc.
Page 15 DGX-640W/DGX-640C Fig.10 Fig.11 Fig.12...
Page 16 DGX-640W/DGX-640C GHL88L Circuit Board GHL88H Circuit Board Remove the black and white key assemblies (A1-B2). Remove the black and white key assemblies (C5-C7). (See procedure 7-1.) (See procedure 7-1.) Remove the six (6) screws marked [260A]. The GHL88L Remove the ﬁ ve (5) screws marked [260C]. The circuit board can then be removed.
Page 17 DGX-640W/DGX-640C Assembling the Keyboard Assembly GHL88M Circuit Board Hammer (White Key), (Black Key) Connect the FFC cable to CN2 of the GHL88M circuit After applying grease to the bearing section of the board, attach the ﬁ lament tape. (Fig.13) hammer, bring the hammer (white key)(black key) Pass the end of the cable into the through hole in the sideways from the rear, ﬁ...
Page 18 DGX-640W/DGX-640C Rubber Contact White key assembly and black key Note that the rubber contact has s speciﬁ c installation assembly direction. Be careful not to install it in the wrong After applying grease to the key guide, install the white direction.
Page 19 DGX-640W/DGX-640C Fig.20...
Page 20 DGX-640W/DGX-640C ■ LSI PIN DESCRIPTION CONTENTS ● AK4385ET (X6040A01) DAC (Digital to Analog Converter) ......... 20 R8A02032BG (X8810A00) CPU (SWX02) ..............22 ● ● S1D13700F01A100 (X5422A00) LCD CONTROLLER ..........21 ● μPD789022GB-A15-8E (XZ56010R) CPU(MKS) ............21...
Page 21 DGX-640W/DGX-640C...
Page 22 DGX-640W/DGX-640C...
Page 23 DGX-640W/DGX-640C...
Page 24 DGX-640W/DGX-640C ■ CIRCUIT BOARDS CONTENTS AM Circuit Board (YC254D0) ..................26 ● DJACK Circuit Board (YC254D0) .................. 26 ● DM Circuit Board (X9119D0) ..................25 ● ● ENC Circuit Board (YC253C0) ..................27 ● GHL88H Circuit Board (X6246D0) ................30 ●...
Page 25 DGX-640W/DGX-640C DM Circuit Board ● • Component Side Pattern Side 2NA-WU17840...
Page 26 DGX-640W/DGX-640C AM Circuit Board ● Component Side DJACK Circuit Board ● USB Circuit Board ● Component Side Component Side : 2NA-WT73170 DJACK : 2NA-WT73170 : 2NA-WT73170...
Page 27 DGX-640W/DGX-640C ENC Circuit Board MVR Circuit Board ● ● Component Side Component Side ● PSW Circuit Board ● PB Circuit Board Component Side Component Side ● TW(L) Circuit Board ● TW(R) Circuit Board Component Side Component Side ● MKO Circuit Board ●...
Page 28 DGX-640W/DGX-640C PNL Circuit Board ● Component Side 2NA-WT73160...
Page 29 DGX-640W/DGX-640C PNR Circuit Board ● Component Side 2NA-WT73160...
Page 30 DGX-640W/DGX-640C GHL88H Circuit Board ● 2NAK8-WF46250...
Page 31 DGX-640W/DGX-640C GHL88L Circuit Board ● 2NAK8-WF46230...
Page 32 DGX-640W/DGX-640C ● GHL88M Circuit Board 2NAK8-WF46240 2...
Page 33 3) Jigs: Pedal unit (LP-7A), Foot switch (FC-4 or FC-5), USB cable, USB ﬂ ash memory, USB-MIDI driver (*1) PC (Install a USB-MIDI driver(*1) in PC and ﬁ nish the THROUGH setup.) *1: Obtain the USB-MIDI driver from CD-ROM (YC238A00) for DGX-640W/DGX-640C or Yamaha ofﬁ cial website. (URL>>http://www.yamahapkclub.com) HOW TO ENTER THE TEST PROGRAM While pressing the C2#, F2 and G2# keys, turn the [STANDBY/ON] switch on.
Page 34 DGX-640W/DGX-640C D. TEST PROGRAM LIST TEST LCD Display Test Descriptions, Judging Criteria Contrast Check Set the contrast knob to the legible position of LCD. When the contrast knob is turned clockwise (or counterclockwise), the LCD becomes blue (or white). 001 Version Displays ROM(Program) and ROM(Wave) versions.
Page 35 DGX-640W/DGX-640C TEST LCD Display Test Descriptions, Judging Criteria 024 Green LED Chk Check that all the green LEDs on the panel are on. 025 LCD On Check that all LCD dots are on. (The whole screen becomes white.) 026 LCD Off Check that all LCD dots are off.
Page 36 DGX-640W/DGX-640C TEST LCD Display Test Descriptions, Judging Criteria 037 USB Storage Chk Checks USB. Connect a USB ﬂ ash memory to the [TO DEVICE] terminal, and execute the test. Make sure that “USB Storage OK” is displayed on the LCD. (OK:”USB Storage OK”, NG:”USB Storage NG”) 047 Rom Chk2 Checks the ROM that is connected to the CPU bus (Full address).
Page 37 DGX-640W/DGX-640C Table 1...
Page 38 DGX-640W/DGX-640C ■ BACKUP and INITIALIZATION The following settings are always backed up, and are maintained even when the power is turned off. If you want to initialize the settings, use the Initialize operation “Backup Clear” as explained below. The Backup Parameters Registration Memory FUNCTION Settings: Tuning, Split Point, Touch Sensitivity, Style Volume, Song Volume, Metronome Volume, Grade, Demo Can-...
Page 39 DGX-640W/DGX-640C ■ USER DATA BACKUP You can access file operations listed below by pressing the category [ ] and [ ] buttons from FILE CONTROL display. If you press the [FILE CONTROL] button while an unformatted USB flash memory is connected to the instrument, the “Format”...
Page 40 DGX-640W/DGX-640C New USB flash memory must be formatted before they can be used by this instrument. The display prompts you for confirmation. You can press the [-] button at this point to cancel the operation. Press the [EXIT] button to return to the MAIN display.
Page 41 DGX-640W/DGX-640C The [-] button moves the cursor to the left, and the [0] button moves it to the right. This operation saves a “User File” containing the reg- Use the dial to select a character for the current istration memory data to a USB flash memory device. cursor location.
Page 42 DGX-640W/DGX-640C A cursor will appear below the first character in the file name. This operation saves a user song (song numbers 031– 035) to USB flash memory. The SOURCE FILE—a user song name—will be highlighted. Refer to “Saving User Files (Registration Mem- ory) to USB Flash Memory”...
Page 43 DGX-640W/DGX-640C User files as well as Style, Song, and Music Database Press the [EXIT] button to return to the MAIN files residing on a USB flash memory can be loaded display. into the instrument. All user files in the USB flash memory will be displayed first, followed by the style files, song files and music database files.
Page 44 DGX-640W/DGX-640C This procedure deletes User, Style and Music Data- This procedure deletes the User Song as well as Style, base files and Song files that were created on this Song, and Music Database files transferred from an instrument from a USB flash memory. external device such as a computer.
Page 45 DGX-640W/DGX-640C ■ SYSTEM BOOTING FLOW CHART...
Page 46 PARTS LIST CONTENTS OVERALL ASSEMBLY ..........2 UPPER CASE ASSEMBLY ........5 BOTTOM BOARD ASSEMBLY........6 FOOT PEDAL ............. 7 KEYBOARD ASSEMBLY ..........8 STAND ASSEMBLY ..........10 ELECTRICAL PARTS ..........12 Note) DESTINATION ABBREVIATIONS Australian model Chinese model British model South-east Asia model Canadian model Taiwan model...
Page 47 DGX-640W/DGX-640C ■ OVERALL ASSEMBLY...
Page 48 DGX-640W/DGX-640C PART NO. DESCRIPTION REMARKS 部品名 REF NO. QTY RANK OVERALL ASSEMBLY DGX-640W/DGX-640C 総組立 FINAL ASSEMBLY 総組立 DGX-640W (WT98200) U,C,E,B,Y,O,K FINAL ASSEMBLY DGX-640C (WT98210) 総組立 U,C,E,B,Y,O,K UPPER CASE ASSEMBLY 上ケースＡｓｓｙ...
Page 49 DGX-640W/DGX-640C PART NO. DESCRIPTION 部品名 REMARKS REF NO. QTY RANK WN827900 FFC CABLE FFC 12P 120mm P=1.0 ＦＦＣケーブル WIRING ASSEMBLY FFC 2 W/SPONGE+LF (WT97000) ＦＦＣＡｓｓｙ２ 630a WH376400 FERRITE CORE...
Page 50 DGX-640W/DGX-640C ■ UPPER CASE ASSEMBLY PART NO. DESCRIPTION 部品名 REMARKS REF NO. QTY RANK UPPER CASE ASSEMBLY 上ケースＡｓｓｙ DGX-640W/DGX-640C UPPER CASE ASSEMBLY DGX-640W (WT98870) 上ケースＡｓｓｙ...
Page 51 DGX-640W/DGX-640C ■ BOTTOM BOARD ASSEMBLY ● Bottom view Top view ● PART NO. DESCRIPTION 部品名 REMARKS REF NO. QTY RANK BOTTOM BOARD ASSEMBLY 底板Ａｓｓｙ DGX-640W/DGX-640C WT984500 BOTTOM BOARD ASSEMBLY 底板Ａｓｓｙ...
Page 52 DGX-640W/DGX-640C ■ FOOT PEDAL PART NO. DESCRIPTION 部品名 REMARKS REF NO. QTY RANK FOOT PEDAL フットペダル DGX-640W/DGX-640C WU089600 FOOT PEDAL フットペダル (WT73300) PEDAL FINAL ASSEMBLY ペダル総...
Page 53 DGX-640W/DGX-640C ■ KEYBOARD ASSEMBLY...
Page 54 DGX-640W/DGX-640C PART NO. DESCRIPTION REMARKS 部品名 REF NO. QTY RANK KEYBOARD ASSEMBLY DGX-640W/DGX-640C ＧＨＬ鍵盤Ａｓｓｙ WT853200 GHL KEYBOARD TEXTURE GHL A88 K6 ＧＨＬ鍵盤黒シボＣ GHL B TEXTURE ASSEMBLY GHL A88 K6 ＧＨＬ黒シボＴＡｓｓ...
Page 55 DGX-640W/DGX-640C ■ STAND ASSEMBLY...
Page 56 DGX-640W/DGX-640C PART NO. DESCRIPTION REMARKS 部品名 REF NO. QTY RANK STAND ASSEMBLY DGX-640W スタンドＡｓｓｙ WT983400 SIDE BOARD L ASSEMBLY LEFT 側板ＬＡｓｓｙ DGX-640W 250a SIDE BOARD L LEFT 側...
Page 57 DGX-640W/DGX-640C ■ ELECTRICAL PARTS AM, DJACK, PB, TW, USB PART NO. DESCRIPTION REMARKS 部品名 REF NO. QTY RANK ELECTRICAL PARTS DGX-640W/DGX-640C 電気部品 WT968700 CIRCUIT BOARD ＡＭシート (WT73170)(YC254D0) WT968800 CIRCUIT BOARD DJACK Ｄ...
Page 58 DGX-640W/DGX-640C AM, DJACK, PB, TW, USB PART NO. DESCRIPTION REMARKS 部品名 REF NO. QTY RANK -215 V 5 5 1 5 4 0 0 POLYESTER FILM CAPACITOR 0.1000 50V J マイラーコン -215 VR168300 MONOLITHIC POLYESTER F.
Page 59 DGX-640W/DGX-640C AM, DJACK, PB, TW, USB, DM PART NO. DESCRIPTION REMARKS 部品名 REF NO. QTY RANK R106 V 2 5 4 8 7 0 0 CARBON RESISTOR 390.0 1/6J 26TP カーボン抵抗 R201 HF456390 CARBON RESISTOR 3.9K 1/4 J AX TP カ...
Page 60 DGX-640W/DGX-640C PART NO. DESCRIPTION REMARKS 部品名 REF NO. QTY RANK US064100 CERAMIC CAPACITOR (CHIP) 0.0100 50V K RECT. チップセラ（Ｂ） US062470 CERAMIC CAPACITOR (CHIP) 470P 50V J RECT. チップセラ（ＳＬ） US064100 CERAMIC CAPACITOR (CHIP) 0.0100 50V K RECT.
Page 61 DGX-640W/DGX-640C PART NO. DESCRIPTION REMARKS 部品名 REF NO. QTY RANK C171 WB29110R CAPACITOR 35V EEE1VA101UP チップケミコン C172 US062100 CERAMIC CAPACITOR (CHIP) 100P 50V J RECT. チップセラ（ＳＬ） C173 US06127R CERAMIC CAPACITOR (CHIP)
Page 62 DGX-640W/DGX-640C PART NO. DESCRIPTION REMARKS 部品名 REF NO. QTY RANK WE863900 COIL INDUCTANCE CHIP DLP11SN900HL2L 1 コモンモードコイル WE863900 COIL INDUCTANCE CHIP DLP11SN900HL2L 1 コモンモードコイル VY65720R CHIP INDUCTANCE 600 BK1608HM601-T...
Page 63 DGX-640W/DGX-640C PART NO. DESCRIPTION REMARKS 部品名 REF NO. QTY RANK RD357220 CARBON RESISTOR (CHIP) 22.0K 63M J RECT. チップ抵抗 RD357220 CARBON RESISTOR (CHIP) 22.0K 63M J RECT. チップ抵抗 RD357220 CARBON RESISTOR (CHIP) 22.0K 63M J RECT.
Page 64 DGX-640W/DGX-640C DM, GHL88L, GHL88M, GHL88H, PNL, PNR, ENC, MKO, MVR PART NO. DESCRIPTION REMARKS 部品名 REF NO. QTY RANK -191 RD35422R CARBON RESISTOR (CHIP) 22.0 63M J RECT. チップ抵抗 R192 RD354680 CARBON RESISTOR (CHIP) 68.0 63M J RECT.
Page 65 DGX-640W/DGX-640C PNL, PNR, ENC, MKO, MVR, PJK, PSW PART NO. DESCRIPTION 部品名 REMARKS REF NO. QTY RANK WT969000 CIRCUIT BOARD (WT73160)(YC253C0) ＰＳＷシート JUMPER CABLE 0.55 TIN (VA07890) ジャンパー線 CN01 V492820R CONNECTOR...
Page 66 <Page1> ■ DGX-640W/DGX-640C OVERALL CIRCUIT DIAGRAM 1/2 (AM, DJACK, DM, MVR, PB, PJK, PSW, TW, USB) DGX-640W/DGX-640C ■ CONTENTS • AM • DJACK • DM • ENC Not Installed • GHL88H REGULATOR • GHL88L LCD CONTROLLER • GHL88M +1.2V • MVR Pedal Unit •...
Page 67 <Page2> ■ DGX-640W/DGX-640C OVERALL CIRCUIT DIAGRAM 2/2 (ENC, GHL88H, GHL88L, GHL88M, PNL, PNR) DGX-640W/DGX-640C GHL88L GHL88M (C # 2 (A-1 28CC1-2000006192 28CC1-2000006193 2 to DM-CN6 <Page1 F8> GHL88H (C # 5 START/STOP DEMO SCOPE LYRICS LESSON LESSON LESSON WAITING YOUR TEMPO MINUS ONE P.T.A EASY SONG...

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