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
Database Part Number
Description
F751*AH,AHT
370-019100-00(2)
FUSE TIME-LAG 10A/250VAC 5X20mm
UL/CSA 5T
F751*C,CT
370-015100-03(3)
FUSE 800mA 250V TIME LAG LBC
5x20mm 5T UL/CSA/VDE/SEMKO
F752*AH,AHT
370-011100-06(4)
FUSE 1.6A 250V TIME LAG LBC
5x20mm 5T UL/CSA/VDE/SEMKO
F752*C,CT
370-018100-05(2)
FUSE TIME-LAG 6.3A/250VAC
5X20mm VDE/UL/CSA 5T
NOTE:
<*AH , *AHT>
: USA, CANADIAN MODEL ONLY.
<*C, *CT >
: 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 - 10
BLOCK DIAGRAM ................................................................................................................................ 11
SPECIAL FUNCTION .......................................................................................................................... 12
DETAILS & WAVEFORMS ON SYSTEM & TEST & DEBUGGING .................................................... 12
ADJUSTMENT POINTS DIAGRAM / AMPLIFIER ADJUSTMENT ...................................................... 13
PCB LAYOUT ............................................................................................................................... 14 - 29
SCHEMATIC DIAGRAM ............................................................................................................... 30 - 46
IC BLOCK DIAGRAM ................................................................................................................... 47 - 54
EXPLODED VIEW ............................................................................................................................... 55
EXPLODED VIEW PARTS LIST ................................................................................................... 56 - 58
ELECTRICAL PARTS LIST .......................................................................................................... 59 - 77
PACKING DIAGRAM .......................................................................................................................... 78
VERSION HISTORY .......................................................................................................................... 79
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 T753
Страница 2: ...2 SAFETY INFORMATION AH VERSION C VERSION ...
Страница 11: ...11 BLOCK DIAGRAM ...
Страница 14: ...14 PCB LAYOUT AUDIO BOARD POWER SUPPLY STANDBY BOARD ...
Страница 16: ...16 DSP BOARD COPPER SIDE DSP BOARD COMPONENT SIDE ...
Страница 17: ...17 FRONT CENTER AMPLIFIER BOARD COMPONENT SIDE ...
Страница 18: ...18 FRONT CENTER AMPLIFIER BOARD COPPER SIDE ...
Страница 19: ...19 SURROUND AMPLIFIER BOARD COMPONENT SIDE ...
Страница 20: ...20 SURROUND AMPLIFIER BOARD COPPER SIDE ...
Страница 21: ...21 KEY BOARD POWER SWITCH COMPONENT SIDE KEY BOARD POWER SWITCH COPPER SIDE ...
Страница 22: ...22 MAIN BOARD ...
Страница 23: ...23 MULTI CHANNEL BOARD COMPONENT SIDE ...
Страница 24: ...24 MULTI CHANNEL BOARD COPPER SIDE ...
Страница 25: ...25 PRE OUT BOARD COPPER SIDE PRE OUT BOARD COMPONENT SIDE ...
Страница 26: ...26 SPEAKER TERMINAL BOARD POWER SWITCH TRIGGER BOARD VIDEO 6 BOARD ...
Страница 27: ...27 SECONDARY ISC BOARD COMPONENT SIDE SECONDARY ISC BOARD COPPER SIDE ...
Страница 28: ...28 S VIDEO BOARD ...
Страница 29: ...29 COMPOSITE VIDEO BOARD COMPONENT SIDE COMPOSITE VIDEO BOARD COPPER SIDE ...
Страница 37: ...37 SPEAKER A B ...
Страница 53: ...53 LC74763 S VIDEO BOARD U4101 ...
Страница 54: ...54 M61516FP MULTI CHANNEL BOARD U6101 U6102 ...
Страница 80: ...80 SERVICE MANUAL T 753 Phase II Surround Sound Receiver NAD ELECTRONICS LTD LONDON ...