Nad T751 Service Manual

Page 2

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

M751*AH 5120»0200-o Fuse 5A 125v Time Lag 5x20 MM MlTl/UL/CSA
M754AH 5120-0052-0 Fuse 1.6A 250v Time Lag 5x20 MM UL/CSA
M752C 5120-0024-0 Fuse 3.15A 250v Time Lag 5x20 MM SEMKO/VDE
NOTE:

<*AH > : USA, CANADIAN MODEL ONLY.
<*C > : EUROPEAN MODEL ONLY.

2. Safety check out

(Only U.S.A. model)

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 A are critical with regard to the risk of fire and electric shock.
Replace only with parts recommended by the manufacturer.

CONTENTS

DESCRIPTION PAGE
SPECIFICATIONS ......................................................... 3-4
REAR PANEL/ FRONT PANEL ................................................. 5
DISASSEMBLY INSTRUCTIONS ................................................ 6
WIRING DIAGRAM ......................................................... 7-8
BLOCK DIAGRAM ........................................................... 9
ADJUSTMENT POINTS DIAGRAM ............................................. 10
INSTRUMENT SETUP ....................................................... 11
ALIGNMENT PROCEDURES ............................................... 11-12
IMPORTANT NOTES ........................................................ 12
PCB LAYOUT ........................................................... 13-19
SCHEMATIC DIAGRAM ................................................... 20-38
IC BLOCK DIAGRAM ..................................................... 39-46
ELECTRICAL PARTS LIST ................................................. 47-69
EXPLODED VIEW .......................................................... 7O
EXPLODED VIEW PARTS LIST ............................................. 71-72
PACKING DIAGRAM ........................................................ 73

Page 23

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35 36