P.O.Box 1, Hamamatsu, JapanNX-A01TROUBLESHOOTING.................................................... 6IC DATA ................................................................... 7–10BLOCK DIAGRAM ....................................................... 11PRINTED CIRCUIT BOARDS ................................ 12–13PIN CONNECTION DIAGRAMS .................................. 14SCHEMATIC DIAGRAMS ...................................... 15–16REPLACEMENT PARTS LIST .............................. 17–211 0 1 0 2 9 CONTENTSTO SERVICE PERSONNEL .......................................... 2FRONT PANELS ............................................................ 3REAR PANELS .............................................................. 3SPECIFICATIONS .......................................................... 3INTERNAL VIEW ........................................................... 4About the Status Indicator (LED) ................................ 4DISASSEMBLY PROCEDURES ............................... 4–5SERVICE MANUALSPEAKER SYSTEMNX-A01'06.082006 All rights reserved.This manual is copyrighted by YAMAHA and may not be copied orredistributed either in print or electronically without permission.IMPORTANT NOTICEThis 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, arealready 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-sonal injury, destruction of expensive components, and failure of the product to perform as specified. Forthese reasons, we advise all YAMAHA product owners that any service required should be performed byan authorized YAMAHA Retailer or the appointed service representative.IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certifica-tion or recognition of any applicable technical capabilities, or establish a principle-agent relationship ofany form.The data provided is believed 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 specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear toexist, please contact the distributor's Service Division.WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may haveaccumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to thisbuss).IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power tothe unit.