
3
SERVICE SAFETY PRECAUTIONS
1. Replacing the fuses
CAUTION:
FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF
FUSE.
Reference Designator
Part Number
Description
F751*AH
33-0321111-00-88
FUSE 20A/250VAC SLOW BLOW 6X32mm
6S UL/CSA
F751*C
33-0161006-00-88
FUSE 10A/250VAC TIME-LAG 5X20mm
5D VDE/UL/CSA
F752*AH
33-0111006-00-88
FUSE 1.6A 250V TIME LAG 5x20mm 5T
UL/CSA/VDE/SEMKO
F752*C
33-0151006-00-88
FUSE 800mA 250V TIME LAG 5x20mm
5T UL/CSA/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 supply circuit.
CONTENTS
DESCRIPTION
PAGE
SPECIFICATIONS ............................................................................................................................ 4 - 5
REAR PANEL / FRONT PANEL VIEW .................................................................................................. 6
DISASSEMBLY INSTRUCTIONS .......................................................................................................... 7
WIRING DIAGRAM ................................................................................................................................ 8
BLOCK DIAGRAM ................................................................................................................................. 9
SPECIAL FUNCTION .......................................................................................................................... 10
DETAILS & WAVEFORMS ON SYSTEM & TEST & DEBUGGING .................................................... 10
ADJUSTMENT POINTS DIAGRAM / AMPLIFIER ADJUSTMENT ....................................................... 11
PCB LAYOUT ............................................................................................................................... 12 - 25
SCHEMATIC DIAGRAM ............................................................................................................... 26 - 45
IC BLOCK DIAGRAM ................................................................................................................... 46 - 54
EXPLODED VIEW ........................................................................................................................ 55 - 57
EXPLODED VIEW PARTS LIST ................................................................................................... 58 - 59
ELECTRICAL PARTS LIST .......................................................................................................... 60 - 73
PACKING DIAGRAM .......................................................................................................................... 74
VERSION HISTORY .......................................................................................................................... 75
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.
Содержание T 773
Страница 1: ...NAD SERVICE MANUAL T 773 T 773 A V Receiver A V Receiver DRAFT DATE 1 MAR 2004 ...
Страница 2: ...2 SAFETY INFORMATION AH VERSION C VERSION ...
Страница 8: ...8a WIRING DIAGRAM ...
Страница 10: ...9 BLOCK DIAGRAM ...
Страница 13: ...12 PCB LAYOUT AUDIO BOARD COMPONENT SIDE AUDIO BOARD COPPER SIDE ...
Страница 15: ...14 DSP BOARD COPPER SIDE DSP BOARD COMPONENT SIDE ...
Страница 16: ...15 FRONT CENTER AMPLIFIER BOARD COMPONENT SIDE ...
Страница 17: ...16 FRONT CENTER AMPLIFIER BOARD COPPER SIDE ...
Страница 18: ...17 SURROUND AMPLIFIER BOARD COMPONENT SIDE ...
Страница 19: ...18 SURROUND AMPLIFIER BOARD COPPER SIDE ...
Страница 20: ...19 KEY BOARD LED BOARD COMPONENT SIDE KEY BOARD LED BOARD COPPER SIDE ...
Страница 21: ...20 MAIN BOARD ...
Страница 22: ...21 MULTI CHANNEL BOARD COMPONENT SIDE COPPER SIDE TRIGGER BOARD ...
Страница 23: ...22 POWER SUPPLY STANDBY ISC FOR FRONT AMP BOARD COMPONENT SIDE COPPER SIDE ...
Страница 24: ...23 ISC FOR SURROUND AMP BOARD COMPONENT SIDE COPPER SIDE COMPOSITE VIDEO BOARD ...
Страница 25: ...24 PRE OUT BOARD COMPONENT SIDE ...
Страница 26: ...25 PRE OUT BOARD COPPER SIDE ...
Страница 27: ...26 SPEAKER TERMINAL BOARD POWER SWITCH VIDEO 6 BOARD SECONDARY BOARD ...
Страница 28: ...27 S VIDEO BOARD ...
Страница 40: ...39 SPEAKER A B ...
Страница 41: ...40 DIGITAL IN OUT ...
Страница 49: ...47 CS49326 DSP BOARD U1001 CS8415A DSP BOARD U1005 CS4392 DSP BOARD U1025 ...
Страница 55: ...53 LC74763 S VIDEO BOARD U4101 BA7625 COMPOSITE VIDEO BOARD U4202 U4203 S VIDEO BOARD U4102 U4103 ...
Страница 56: ...54 M61516FP MULTI CHANNEL BOARD U6101 U6102 ...
Страница 58: ...56 58 47 24 32 34 45 77 47 55 65 66 78 26 62 59 29 76 39 40 38 23 EXPLODED VIEW ...
Страница 59: ...57 168 725 20 7 75 16 250 5 1 61 80 63 72 31 71 68 67 EXPLODED VIEW ...
Страница 78: ...76 SERVICE MANUAL T 773 A V Receiver NAD ELECTRONICS LTD LONDON ...