Yamaha AG-STOMP GA 011589 Bedienungsanleitung

AG-Stomp

SERVICE MANUAL

GA 011589 1.507K-926 Printed in Japan 2001.7

HAMAMATSU, JAPAN

ACOUSTIC GUITAR PRE-AMPLIFIER

CONTENTS

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

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

BLOCK DIAGRAM

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

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 ............................. 32

MIDI IMPLEMENTATION CHART......................................... 33

PARTS LIST

OVERALL CIRCUIT DIAGRAM

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

AG-Stomp

IMPOR TANT 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.

AG-Stomp

SPECIFICATIONS

Digital Section

• Full Digital Signal Processing

• Mic Simulator: 8 Types

• Feedback Reduction: 5-band

• Digital Effects

• Limiter

• Digital Chorus, Digital Delay

• Hall Reverb, Room Reverb, Plate Reverb

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

Parameters

• Tuner Function (Chromatic, Auto)

MIDI Functions

Receive:Program Change (Program Change Table can be cre-

ated), Control Change, Bulk In

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

Out

Guitar Power Supply

9V power can be supplied via aTRS phone cable to a guitar’s

built-in pre-amplifier, etc. that consumes less than 10mA of

power, and uses a monaural output.

Controller/Switch

Top Panel

Push Switch x17

UP, DOWN, MANUAL, UTILITY, STORE, LIMITER, FEED

BACK REDUCTION 1-5, CHORUS, DELAY, HALL, ROOM,

PLATE, SHIFT

Knob x15

MICTYPE, BLEND, VOLUME, BASS, MIDDLE,TREBLE,

PRESENCE, LIMITER LEVEL, FEEDBACK REDUCTION

FREQ, FEEDBACK REDUCTION DEPTH, CHORUS

SPEED/DELAY TIME, CHORUS DEPTH/DELAY FEED

BACK,CHORUS LEVEL/DELAY LEVEL,REVERB LEVEL,

OUTPUT

Footswitch x4

1, 2, 3 BANK

Rear Panel

STAND-BY ON/OFF, MUTE, +9V SUPPLY ON/OFF

Display

7 Segment LED (3 digit) x1

Push Switch LED x17

Footswitch LED x4

Connections

INPUT:Standard Stereo Phone Jack

OUTPUT L/MONO, R: Standard Stereo Phone Jack (TRS Bal

anced)

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

D/A Converter

20 bit

Sampling Frequency

44.1kHz

Memory Allocations

Preset: 30

User: 30

Input Level/Impedance

(When using pre-amp bypass)

INPUT: -17dBm/1MΩ

Output Level/Impedance

OUTPUT L/MONO: Balance +4dBm/600Ω

OUTPUT R: Balance +4dBm/600Ω

PHONES: 0dBm/47Ω

Power

Exclusive Power Adaptor (AC-10)

AC Output:AC12V, 1A

Power Consumption

15W

Dimensions

280(W)x70(H)x184(D)mm (11.0"x2.8"x7.2")

Weight

2.2 kg (4lbs. 4oz.)

Accessories

Power Adaptor (AC-10)

TRS Phone Cable for Guitar Power Supply (3m)

TRS-XLR Converter Cable (x2)

Dummy Battery

Owner’s Manual

AG-Stomp

Top Panel

PANEL LAYOUT

UP Button

DOWN Button

MANUAL Button

UTILITY Button

STORE Button

Display

Display & Main Section

Foot Switch Section

Display & Main Section Effect Section Pre-Amplifier Section

AG-Stomp

Pre-AmpSection

MICTYPE Select Switch (MICTYPE)

BLEND Control (BLEND/STEREO)

VOLUME

Tone Controls

OUTPUT Level Control

SHIFT Button

LIMITER Button

LEVEL

Feedback Reduction Buttons

Frequency Control (FREQ)

DEPTH Control

CHORUS/DELAY Effect Buttons

SPEED/TIME Control

DEPTH/FEEDBACK Control

LEVEL

Reverb Effect Buttons

REVERBVolume

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

!8 @2!3

Effect Section

u i o !0

AG-Stomp

Power Switch (STAND-BY ON/OFF)

Power Adaptor Jack (AC IN 12V 1A)

Guitar Power Supply Switch

MIDI OUT Jack

MIDI IN Jack

Digital Output Jack (DIGITAL OUT)

EXP. PEDAL Jack

Headphone Jack (PHONES)

Output Jacks (OUTPUT R, L/MONO)

INPUT Jack

Input MUTE Switch

@4 @5

Footswitch Section

Footswitches 1, 2, 3

Bank Switch (AUTO F.R./BANK/TUNER)

Rear Panel

@6 @7 @8 #0 #1 #2 #3 #5#6

#4@9

AG-Stomp

BLOCK DIAGRAM

IC1X2

IC2,IC3

IC8

IC101

W101

CN301CN101 CN301 C

W102

IC102

IC104

IC10,IC11

PB0~PB7,SW-R0~R3

IC12

DOUT

(DM1/2-CN1)

(PN1/2-CN304)

(DM1/2-CN3)

(PN1/2-CN302)

AN0~AN3,SELECT-A,SELECT-B

PN 2/2

PN 1/2

1/2

2/2

AG-Stomp

KEC-54233

IC112, IC113, IC114

IC105

OUTPUT

IC105

IC106

IC103

-1

IC103

15,17

CN3011CN301 CN101

SW-100, SW-LINE

(DM1/2-CN2)

(PN1/2-CN303)

LED-MOD

LED-REV, SW-010

LED-FOOT, SW-001 RXDO,TXDO

PN 2/2

PN 1/2

AG-Stomp

CIRCUIT BOARD LAYOUT

1/2

2/2

2/2DM

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