NAD T-977 free download

File name T-977.pdf

T977 C/AH SEVEN CHANNEL AMPLIFIER SERVICE MANUAL T977 C/AH SEVEN CHANNEL AMPLIFIER CONTENTS FRONT PANEL/REAR PANEL VIEW3 SPECIFICATIONS 4 ALIGNMENT PROCEDURE/ALIGNMENT POINTS 5-6 WIRING DIAGRAM 7 SCHEMATIC DIAGRAM8-15 PCB LAYOUT 16-21 ELECTRICAL PARTS LIST22-37 EXPLODED VIEW 38 EXPLODED VIEW PARTS LIST39 PACKING DIAGRAM40 SERVICE SAFETY PRECAUTIONS 1. Replacing the Fuses CAUTION: FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF FUSE. REFERENCE NO. PART NUMBER DESCRIPTION Rear Panel AH 20-11203-10 MDA T20AL/250V C 20-12103-20 MDA T10AL/250V AMP Board F101/F102 20-12632-00 T6.3AL/250V PSU Board F201-F204 20-12162-01 T1.6AL/250V NOTE: *AH : North American version only *C : European version only 2. Safety-check out (North American model only) Before returning the product to the customer, make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit. Parts marked with the symbol are critical with regard to the risk of fire and electric shock.Replace only parts recommended by the manufacturer. -2- -3- SPECIFICATIONS CONTINUOUS AVERAGE POWER 140 W (21.5 dBW) OUTPUT INTO 8 OHMS OR 4 OHMS (Min. power per channel, 20 Hz