Nad C 740 Service Manual

Page 2

SERVICE SAFETY PRECAUTIONS.

. Replacing the fuses
CAUTION: FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE
REPLACE ONLY WITH SAME TYPE OF FUSE;

Reference No. Part No. Description

F901*AH 252161 3A-125V UL/T-237 Time lag

F901*BI, B, 0 252074 T2A L/250V SE-EAK Time lag

NOTE:

<*AH> : U. S. A., CANADIAN MODEL ONLY. <*B1> :AUSTRALIAN MODEL ONLY.
<*C> : EUROPEAN MODEL ONLY. <*B> : U.K, MODEL ONLY.

. 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
SERVICE SAFETY PRECAUTIONS .................................... 2
FRONT PANEL/REAR PANEL VIEW ------------- 3
CONNECTION OF INSTRUMENT --------------------- 4
ALIGNMENT PROCEDURE ............................ 5
SPECIFICATIONS ............................................... 6
PCB LAYOUT .................................................. 7-3
SCHEMATIC DIAGRAM ............................................. 9-11
MICROPROCESSOR CONNECTION DIAGRAM 8. TERMINAL DESCRIPTION- ' '12

IC BLOCK DIAGRAM ............................................... 13-15
RF SECTION BLOCK DIAGRAM - - ' ' ' - ' - ' ' ' 16

AF SECTION BLOCK DIAGRAM ------- ' ' 17
EXPLODED VIEW ...... . ..... '. . . ................................... 18
EXPLODED VIEW PARTS LIST ............................. 19-20
WIRING DIAGRAM .................................. . . . . . 21
ELECTRICAL PARTS LIST ..................................... 22-25
PACK'NG DIAGRAM/PARTS LIST ............................... 26
RUNNING CHANGE INFORMATION ................................... 27