NAD M-27 free download

File name M-27.pdf

M27 SERVICE MANUAL SEVEN CHANEL AMPLIFIER SEVEN CHANEL AMPLIFIER M27 NAD TABLE OF CONTENTS DESCRIPTION PAGE SERVICE CAUTION...3-4 SPECIFICATIONS... 5 WIRING DIAGRAM...6 BLOCK DIAGRAM... ...7-9 TROUBLE SHOOTING A GUIDE...10 TROUBLE SHOOTING B GUIDE...11 CIRCUIT DIAGRAMS ...12-25 PCB LAYOUT...26-33 ELECTRICAL PARTS LIST...34-59 EXPLODED VIEW... 60-63 EXPLODED VIEW PARTS LIST...64 PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO PRODUCTS CAUTION : DO NOT ATTEMPT TO MODIFY THIS 5. NO LEAD OR COMPONENT SHOULD TOUCH A PRODUCT IN ANY WAY, NEVER PERFORM CUSTOM- RECIVING TUBE OR A RESISTOR RATED AT 1 WATT IZED INSTALLATIONS WITHOUT MANUFACTURER'S OR MORE. LEAD TENSION AROUND PROTRUNING APPROVAL. UNAUTHORIZED MODIFICATIONS WILL METAL SURFACES MUST BE AVOIDED. NOT ONLY VOID THE WARRANTY, BUT MAY LEAD TO 6. ALL CRITICAL COMPONENTS SUCH AS FUSES, YOUR BEING LIABLE FOR ANY RESULTING PROP- FLAMEPROOF RESISTORS, CAPACITORS, ETC. ERTY DAMAGE OR USER INJURY. MUST BE REPLACED WITH EXACT FACTORY TYPES, SERVICE WORK SHOULD BE PERFORMED ONLY DO NOT USE REPLACEMENT COMPONENTS OTHER AFTER YOU ARE THOROUGHLY FAMILIAR WITH ALL THAN THOSE SPECIFIED OR MAKE UNRECOM- OF THE FOLLOWING SAFETY CHECKS AND SERVIC- MENDED CIRCUIT MODIFICATIONS. ING GUIDELINES. TO DO OTHERWISE,INCREASES 7. AFTER RE-ASSEMBLY OF THE SET ALWAYS PER- THE RISK OF POTENTIAL HAZARDS AND INJURY TO FORM AN A.C. LEAKAGE TEST ON ALL EXPOSED THE USER. METALLIC PARTS OF THE CABINET, (THE CHANNEL WHILE SERVICING, USE AN ISOLATION TRANS- SELECTOR KNOB, ANTENNA TERMINALS. HANDLE FORMER FOR PROTECTION FROM A.C. LINESHOCK. AND SCREWS) TO BE SURE THE SET IS SAFE TO OPER