Yamaha GA 011589 service manual Acoustic Guitar PRE-AMPLIFIER

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ACOUSTIC GUITAR PRE-AMPLIFIER

SERVICE MANUAL

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

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

 

GA

011589

HAMAMATSU, JAPAN

1.507K-926 Printed in Japan 2001.7

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Contents Acoustic Guitar PRE-AMPLIFIER AG-Stomp Digital Section SpecificationsAG-Stomp Panel Layout AG-Stomp Pre-AmpSection AG-Stomp Footswitch Section DM 2/2 DM 1/2 Block DiagramKEC-54233 Circuit Board Layout Wiring Bottom30 Disassembly ProcedurePN 1/2 Heat Sink HD6413002FP16 XQ375A00 CPU LSI PIN DescriptionYSS910-S XV988A00 DSP6 Digital Signal Processor AK4520A-VF-E2 XT802A00 DAC & ADC Assp IC Block DiagramNJM5532M XC011A00 Circuit Boards To PN1/2-CN302 To PN1/2-CN303 To PN1/2-CN304 AG-Stomp DM 1/2 Circuit Board AG-Stomp DM 2/2 Circuit Board Pattern side AG-Stomp PN 1/2 Circuit Board To DM1/2-CN103 AG-Stomp PN 1/2 Circuit Board PN 2/2 Circuit Board AG-Stomp Pattern side Connection of Terminals Test ProgramSW Check Midi Check Input Output E1 Midi Receive Buffer Full Error MessagesOmni ON, Mono Parts List Overall Assembly Description Remarks Electrical Parts V7494000 XZ108A00 RG004470 V7491800 VK701100 PN 1/2 DM 2/2 AG-Stomp Overall Circuit Diagram 3/3 DM