NAD D-7050 free download

File name D-7050.pdf

D7050 SERVICE MANUAL Direct Digital Network Amplifier Direct Digital D7050 NAD Network Amplifier TABLE OF CONTENTS DESCRIPTION PAGE SERVICE CAUTION...3-4 SPECIFICATIONS...5 WIRING DIAGRAM...6-9 TROUBLE SHOOTING GUIDE...10 EXPLODED VIEW ...11a & b EXPLODED VIEW PARTS LIST...11a & b CIRCUIT DIAGRAMS...12-25 PCB LAYOUT...26-32 ELECTRICAL VIEW PARTS LIST...33-47 PRODUCT SAFETY SERVICING GUIDELINES CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN VOLTAGE MEASURE MUST NOT EXCEED 75 VOLTS R.M.S. ANY WAY. NEVER PERFORM CUSTOMIZED INSTALLATIONS THIS CORRESPONDS TO 0.5 MILLIAMP AC ANY VALUE WITHOUT MANUFACTURER'S APPROVAL. UNAUTHORIZED EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY. MAY LEAD TO YOUR BEING LIABLE FOR ANY RESULTING PROPERTY DAMAGE OR USER INJURY. SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS AND SERVICING GUIDELINES. TO DO OTHERWISE, INCREASES THE RISK OF POTENTIAL HAZARDS AND INJURY TO THE USER. WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTECTION FROM AC LINE SHOCK. SAFETY CHECKS SUBJECT : GRAPHIC SYMBOLS AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL, WITHIN AN CORRECTED. A CHECK SHOULD BE MADE OF THE EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE USER TO THE FOLLOWING. PRESENCE OF UNINSULATED "DANGEROUS VOLTAGE" WITHIN THE PRODUCT'S ENCLOSURE THAT MAY BE OF SUFFICIENT MAGNITUDE TO SUBJECT : FIRE & SHOCK HAZARD CONSTITUTE A RISK OF ELECTRIC SHOCK. 1. BE SURE THAT ALL COMPONENTS ARE POSITIONED IN THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS SUCH A WAY AS TO AVOID POSSIBILITY OF ADJACENT INTENDED TO ALERT THE USER TO THE PRESENCE