NAD M2 AH, Service Manual

Page: 2 / 75

CONTENTS
FRONT PANEL/REAR PANEL VIEW 3
SPECIFICATIONS 4
TROUBLE SHOOTING 5-6
SCHEMATIC DIAGRAM 7-25
PCB LAYOUT 26-37
ELECTRICAL PARTS LIST 38-66
EXPLODED VIEW 67-68
EXPLODED VIEW PARTS LIST 69
PACKING DIAGRAM 70
PACKING PARTS LIST 71
DISMANTLING AMPLIFIER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72-75
IMPORTANT FINAL PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
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
AC Inlet A20-12103-00 Littelfuse 618 T10AL/250V
POWER SUPPLY Board Upper
FUSE701 A20-12102-00 Littelfuse 618 T1AL/250V
POWER SUPPLY Board Lower
FUSE800 A20-12312-02 Littelfuse 618 T3.15AL/250V
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