Yamaha DG-Stomp, DG-Stomp E Schematic

DG-Stomp

GUITAR PRE-AMPLIFIER WITH EFFECTS

SERVICE MANUAL

This document is printed on chlorine free (ECF) paper with soy ink.

011537

20001001-39800

SPECIFICATIONS ................................................ 3/4

PANEL LAYOUT .................................... 5

BLOCK DIAGRAM

CIRCUIT BOARD LAYOUT ............... 10

WIRING ................................................................... 11

DISASSEMBLY PROCEDURE ............................ 12

LSI PIN DESCRIPTION .............................. 15

IC BLOCK DIAGRAM ................................... 18

CIRCUIT BOARDS ........................................ 20

TEST PROGRAM ................................. 28

ERROR MESSAGES ............................. 31

MIDI IMPLEMENTATION CHART......................................... 32

PARTS LIST OVERALL CIRCUIT DIAGRAM

1.57K-786 I.T Printed in Japan 2000.09

............................ 8

HAMAMATSU, JAPAN

DG-Stomp

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 understood 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-

IMPORTANT : This presentation or sale of this manual to any individual or firm does not constitute authorization certifi-

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

IMPORTANT : Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power

IMPORTANT NOTICE

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.

cation, recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form.

accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus.)

to the unit.

LITHIUM BATTERY HANDLING

This product uses a lithium battery for memory back-up.

WARNING : Lithium batteries are dangerous because they can be exploded by improper handling. Observe the following pre-

Leave lithium battery replacement to qualified service personnel. Always replace with batteries of the same type. When installing on the PC board by soldering, solder using the connection terminals provided on the battery cells. Never solder directly to the cells. Perform the soldering as quickly as possible. Never reverse the battery polarities when installing. Do not short the batteries. Do not attempt to recharge these batteries. Do not disasemble the batteries. Never heat batteries or throw them into fire.

ADVARSEL!

Lithiumbatteri-Eksplosionsfare ved fejlagtig handtering. Udskiftning ma kun ske med batteri af samme fabrikat og type. lever det brugte batteri tilbage til leverandren.

VARNING

Explosionsfara vid felaktigt batteribyte. Anvand samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren. Kassera anvant batteri enligt fabrikantens instruktion.

VAROITUS

Paristo voi rajahtaa, jos se on virheellisesti asennettu. Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiiin. Havita kaytetty paristo valmistajan ohjeiden mukaisesti. The following information complies with Dutch official Gazette 1995. 45; ESSENTIALS OF ORDER ON THE COLLECTION OF BATTERIES.

• Please refer to the diassembly procedure for the removal of Back-up Battery.

• Leest u voor het verwijderen van de backup batterij deze beschrijving.

cautions when handling or replacing lithium batteries.

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.

SPECIFICATIONS

DG-Stomp

Digital Section

• Full Digital Signal Processing

• 8 Channel Preamp

• Digital Effects

• Compressor

• Chorus, Flanger, Phaser, Rotary Speaker, Tremolo

• Digital Delay, Tape Echo

• Spring Reverb, Hall Reverb, Plate Reverb

• Tap Tempo Function (Delay Time)

• Speaker Simulator (16 Types)

• External Controller Function (EXP Pedal/MIDI):8 Controllers/ Parameters

• Wah Function

• Tuner Function (Chromatic, Auto)

MIDI Functions

Receive: Program Change (Program Change Table can be

created), Control Change, Bulk In

Transmit: Program Change, Control Change, Bulk Out, Merge

Out

Controller Switch

Top Panel

Push Switch x17

UP, DO WN, MANUAL, UTILITY, STORE, COMP, CHORUS , FLANGER, PHASER, ROTARY, TREMOLO, DELAY , TAPE ECHO, SPRING, HALL, PLATE, SP. SIM

Knob x15

AMP SELECT , GAIN, MASTER, TREBLE, MIDDLE, BASS, PRESENCE, COMP, SPEED, DEPTH, TIME, FEEDBACK, LEVEL, REVERB, OUTPUT

Footswitch x4

1, 2, 3, BANK

Rear panel

STAND-BY ON/OFF, INPUT LOW/HIGH

Display

7 Segment LED (3 digit) x1 Push Switch LED x17 Foot Switch LED x4

Connections/Jacks

INPUT: Standard Monaural Phone Jack OUTPUT L/MONO, R: Standard Monaural Phone Jack PHONES: Standard Stereo Phone Jack EXP. PEDAL: Standard Stereo Phone Jack DIGITAL OUT: COAXIAL MIDI IN, MIDI OUT: 5 pin DIN

A/D Converter

20 bit + 3 bit Floating

D/A Converter

20 bit

Sampling Frequency

48 kHz

Memory Allocations

Preset: 90 User: 90

Input Level/Impedance (When using preamp bypass)

INPUT HIGH: -25dBm/1Mohm INPUT LOW: -15dBm/1Mohm

Output Level/Impedance

OUTPUT L/MONO, R: 0dBm/1kohm PHONES: 0dBm/47ohms (47ohms load)

Power

Exclusive Power Adaptor (AC-10) AC Output: AC12V, 1000mA

Power Consumption

15W

Dimensions (WxHxD)

280x70x184mm (11.0”x2.8”x7.2”)

Weight

2.2kg (4lbs 14oz)

Accessories

Power Adaptor (AC-10) Owner’s Manual (this booklet)

DG-Stomp

PANEL LAYOUT

Top Panel

DG-Stomp

Display & Main Section

Effect Section

Foot Switch Section

Amp Section

Display & Main Section

q w

e r t

Up Button (UP)

Down Button (DOWN)

Manual Button (MANUAL)

Utility Button (UTILITY)

Store Button (STORE)

Display

DG-Stomp

Amp Section

u i o !0

Amp Select Switch (LEAD1-CLEAN2)

Gain Control (GAIN)

Master V olume (MASTER)

Tone Controls

Output Level Control (OUTPUT)

Speaker Simulator Button (SP. SIM)

Effect Section

!4 !6 !7 !9 @0 @1 @3

Compressor Button (COMP)

Compressor Knob (COMP)

Modulation Group Effect Buttons

(CHORUS/FLANGER/PHASER/ROTARY/TREMOLO) Speed Knob (SPEED)

Depth Knob (DEPTH)

Delay Group Effect Buttons(DELAY/TAPE ECHO)

Time Knob (TIME)

Feedback Knob (FEEDBACK)

Level Knob (LEVEL)

Reverb Group Effect Buttons(SPRING/HALL/PLATE)

Reverb Knob (REVERB)

!8 @2!3

Foot Switch Section

Foot Switches 1, 2, 3

Bank Switch (TAP/BANK/TUNER)

DG-Stomp

@4 @5

Rear Panel

@6 @7 @8 @9 #0 #1 #2 #4#5

Power Switch (STAND-BY ON/OFF)

Power Adaptor Jack (AC IN 12V 700mA)

MIDI OUT Jack

MIDI IN Jack

Digital Out Jack (DIGITAL OUT)

EXP Pedal Jack (EXP. PEDAL)

Headphones Jack (PHONES)

Output Jacks (OUTPUT R, L/MONO)

Input Jack (INPUT)

Input Level Switch (LOW/HIGH)

DG-Stomp

BLOCK DIAGRAM

2 4 1

PN 1/2

IC308 IC309

IC101

IC1

AN0~AN3,SELECT-A,SELECT-B

(

DM-CN3

(

PN-CN302

)

IC102

IC103

216

IC2,IC3

IC103

IC9 IC8

PN 2/2

PN 1/2

5 6 3 4

IC104

CN301

IC10,IC11

PB0~PB7,SW-R0~R3

(

)

DM-CN1

(

)

PN-CN304

CN301

DG-Stomp

IC105

2 3 1

IC106

LED-FOOT LED-REV LED-MOD SW-001,SW-010,SW-100,SW-LINE

(

)

DM-CN2

(

)

PN-CN303

5 4 1

2 3 1

TXDO,RXDO

CLD,CIN,CCK

15,17

18 19

, ,

PN 2/2

IC112 IC113 IC114

KEC-54203

DG-Stomp

CIRCUIT BOARD LAYOUT

1/2

WIRING

CN301

DG-Stomp

1/2

CN304

CN1 CN2 CN3

CN303

V611460V611450

CN302 CN305

V610850

CN306

V611470

Note) When installing the DM circuit board, use care not to have the wire assembly caught by the bottom case.

2/2

V611480

CN103

DG-Stomp

DISASSEMBLY PROCEDURE

1. Bottom Case

Remove the six (6) screws marked [30]. The bottom case can then be removed. (Fig. 1)

Bottom

[30]: Bind Head Tapping Screw-B 3.0x8 MFZN2BL (EP600190)

[30]

Fig.1

2. DM Circuit Board

2-1. Remove the bottom case. (See Procedure 1.) 2-2. Remove the four (4) scre ws marked [10c-a] and the

five (5) special hexagonal nuts marked [10e] from the rear panel and the three (3) screws marked [10c-b] from the DM circuit board. The DM circuit board can then be removed. (Fig. 2)

Rear

[10c-a]

Hexagonal Nut

Topcover

DG-Stomp

Battery VN103500

VN103600(Battery holder for VN103500)

[10c-b]

[10c]: Bind Head Tapping Screw-B 3.0x8 MFZN2BL (EP600190) [10e]: Hexagonal Nut 9.0 12x2 MFNI33 (LX200060)

Fig.2

3. PN Circuit Boards (1/2, 2/2)

3-1. Remove the bottom case. (See Procedure 1.) 3-2. Remove the DM circuit board. (See Procedure 2.)

3-3-1. PN1/2 Circuit Board

Remove the controls, knobs and special he xagonal nuts from the front panel, the three (3) screws marked [10j] and the shield film from the PN1/2 circuit board. The PN1/2 circuit board can then be removed. (Fig. 3)

3-3-2. PN2/2 Circuit Board

Remove the four (4) special hexagonal nuts from foot switches. The PN 2/2 circuit board can then be removed. (Fig. 3)

• Notice for back-up battery removal

Push the battery as shows in figure,

then the battery will pop up.

Hexagonal Nut

[10j]:Bind Head Tapping Screw-P 3.0x12 MFZN2BL (VC161100)

Fig.3

1/2

[10j]

2/2PN

[10j]

shield film

+ 29 hidden pages

Yamaha DG-Stomp, DG-Stomp E Schematic

CONTENTS

SPECIFICATIONS

PANEL LAYOUT

BLOCK DIAGRAM

CIRCUIT BOARD LAYOUT

WIRING

DISASSEMBLY PROCEDURE

1. Bottom Case

2. DM Circuit Board

3. PN Circuit Boards (1/2, 2/2)