VSX-45TX
4
1
2
3
4
1
2
3
4
C
D
F
A
B
E
CONTENTS
SAFTY INFORMATION ....................................................................................................................................... 2
1. SPECIFICATIONS ............................................................................................................................................ 5
2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................ 6
2.1 PACKING ................................................................................................................................................... 6
2.2 EXTERIOR SECTION................................................................................................................................ 8
2.3 REAR PANEL SECTION.......................................................................................................................... 10
2.4 HEAT SINK SECTION.............................................................................................................................. 12
2.5 FRONT PANEL SECTION ....................................................................................................................... 14
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .......................................................................................... 16
3.1 AUDIO BLOCK DIAGRAM ....................................................................................................................... 16
3.2 DSP BLOCK DIAGRAM........................................................................................................................... 18
3.3 VIDEO AND POWER AMP BLOCK DIAGRAM ....................................................................................... 20
3.4 OVERALL WIRING DIAGRAM................................................................................................................. 22
3.5 FM/AM TUNER MODULE ........................................................................................................................ 24
3.6 7.1CH I/O, V-AUDIO IN, FRONT IN and OPTICAL IN ASSYS ................................................................ 26
3.7 INPUT CONNECT and COAXIAL IN ASSYS .......................................................................................... 28
3.8 VIDEO ASSY ........................................................................................................................................... 30
3.9 COMPONENT and RS232C ASSYS ....................................................................................................... 32
3.10 MAIN CONTROL ASSY (1/3)................................................................................................................. 34
3.11 MAIN CONTROL ASSY (2/3)................................................................................................................. 36
3.12 MAIN CONTROL ASSY (3/3)................................................................................................................. 38
3.13 MIC & F.OPT IN, MIC AMP and DSP CONNECTION ASSYS .............................................................. 40
3.14 POWER AMP IN, FAN DRIVE and FAN CONNECTION ASSYS .......................................................... 42
3.15 DSP ASSY (1/2)..................................................................................................................................... 44
3.16 DSP ASSY (2/2)..................................................................................................................................... 46
3.17 DISPLAY ASSY...................................................................................................................................... 48
3.18 VOLUME, MULTI JOG and HEADPHONE ASSYS................................................................................ 50
3.19 REGULATOR ASSY............................................................................................................................... 52
3.20 POWER AMP-L ASSY ........................................................................................................................... 54
3.21 POWER AMP-R and POWER AMP-C ASSYS ...................................................................................... 56
3.22 SP/PS, DIODE, TRANS 2-1 and VH TR ASSYS.................................................................................... 58
3.23 TRANS 2-2, TRANS 1 and PRIMARY ASSYS....................................................................................... 60
4. PCB CONNECTION DIAGRAM ..................................................................................................................... 62
4.1 FM/AM TUNER MODULE ........................................................................................................................ 63
4.2 7.1CH I/O ASSY ...................................................................................................................................... 64
4.3 V-AUDIO IN ASSY.................................................................................................................................... 65
4.4 FRONT IN, OPTICAL IN and INPUT CONNECT ASSYS........................................................................ 66
4.5 COAXIAL IN ASSY .................................................................................................................................. 68
4.6 VIDEO ASSY ........................................................................................................................................... 69
4.7 MAIN CONTROL and RS232C ASSYS ................................................................................................... 70
4.8 MIC & F. OPT IN, MIC AMP and DSP CONNECTION ASSYS ............................................................... 74
4.9 POWER AMP IN ASSY............................................................................................................................ 76
4.10 FAN DRIVE and FAN CONNECTION ASSYS ....................................................................................... 77
4.11 DSP ASSY ............................................................................................................................................. 78
4.12 DISPLAY, VOLUME, MULTI JOG and HEADPHONE ASSYS ............................................................... 80
4.13 REGULATOR and COMPONENT ASSYS ............................................................................................. 84
4.14 POWER AMP L and POWER AMP C ASSYS ....................................................................................... 88
4.15 POWER AMP R ASSY........................................................................................................................... 92
4.16 SP/PS ASSY .......................................................................................................................................... 96
4.17 DIODE, TRANS 2-1 and VH TR ASSYS ................................................................................................ 98
4.18 TRANS 2-1, TRANS 1 and PRIMARY ASSYS..................................................................................... 100
5. PCB PARTS LIST ......................................................................................................................................... 102
6. ADJUSTMENT ............................................................................................................................................. 115
7. GENERAL INFORMATION ........................................................................................................................... 116
7.1 DIAGNOSIS ........................................................................................................................................... 116
7.1.1 PROTECTION CIRCUIT CONTROL SPECIFICATION ...................................................................... 116
7.1.2 DIAGNOSTICS OF AMPLIFIER SECTION ........................................................................................ 118
7.1.3 TROUBLE SHOOTING ....................................................................................................................... 119
7.1.4 DISASSEMBLY ................................................................................................................................... 124
7.2 PARTS.................................................................................................................................................... 127
7.2.1 IC ........................................................................................................................................................ 127
7.2.2 DISPLAY ............................................................................................................................................. 141
7.3 CLEANING............................................................................................................................................. 143
8. PANEL FACILITIES ...................................................................................................................................... 145
