Yamaha DG60FX112 free download

File name Yamaha-DG60FX112 combo.pdf

DG60FX-112 GUITAR AMPLIFIER SERVICE MANUAL CONTENTS SPECIFICATIONS ... 3/4 PANEL LAYOUT ... 5 CIRCUIT BOARD LAYOUT ... 7 BLOCK DIAGRAM ... 8 WIRING ... 10 DISASSEMBLY PROCEDURE ... 11 LSI PIN DESCRIPTION ... 15 IC BLOCK DIAGRAM ... 18 CIRCUIT BOARDS ... 20 TEST PROGRAM ... 30 ERROR MESSAGES ... 33 IDLING ADJUSTMENT ... 33 MIDI IMPLEMENTATION CHART ... 34 PARTS LIST OVERALL CIRCUIT DIAGRAM This document is printed on chlorine free (ECF) paper with soy ink. GA 011540 20001101-75000 1.552K-448 I.T HAMAMATSU, JAPAN Printed in Japan 2000.11 1 DG60FX-112 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 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 personal 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. This presentation or sale of this manual to any individual or firm does not constitute authorization certification, recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form. IMPORTANT : 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 : IMPORTANT : 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.) Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power 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 precautions when handling or replacing lithium batteries. Leave lithium battery