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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
M271 *C
5120-0024-0
3.15A TIME-LAG 5x20 VDE-SEMKO
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
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-11
INSTRUMENT SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
ALIGNMENT PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13
IMPORTANT NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-24
SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25-42
IC BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43-51
ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52-71
EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73-74
PACKING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Содержание T741
Страница 1: ...NAD T 741 SURROUND SOUND RECEIVER T 741S U R R O U N D SOUND RECEIVER SERVICE MANUAL ...
Страница 9: ...11 ...
Страница 12: ...14 PCB LAYOUT S VIDEO BOARD VIDEO 5 BOARD VOLUME BOARD ...
Страница 13: ...15 VIDEO BOARD TUNER BOARD ...
Страница 14: ...16 SURROUND AMPLIFIER BOARD PRIMARY BOARD SECONDARY BOARD ...
Страница 15: ...17 AUDIO BOARD PSU BOARD ...
Страница 16: ...18 MULTI CHANNEL BOARD COMPONENT SIDE ...
Страница 17: ...19 MULTI CHANNEL BOARD SOLDER SIDE ...
Страница 18: ...20 MAIN BOARD ...
Страница 19: ...22 21 AC3 BOARD COMPONENT SIDE AC3 BOARD SOLDER SIDE ...
Страница 20: ...23 24 KEY BOARD DIGITAL BOARD SPEAKER BOARD LED BOARD POWER SWITCH BOARD ...
Страница 64: ...SERVICE MANUAL NAD 2001 T 741 SURROUND SOUND RECEIVER NAD ELECTRONICS INTERNATIONAL TORONTO ...