VSX-D712-K
4
1234
123
4
C
D
F
A
B
E
CONTENTS
SAFETY INFORMATION ..................................................................................................................................... 2
1. SPECIFICATIONS ............................................................................................................................................ 5
2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................ 7
2.1 PACKING ................................................................................................................................................... 7
2.2 EXTERIOR SECTION................................................................................................................................ 8
2.3 FRONT PANEL SECTION ....................................................................................................................... 10
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ..........................................................................................12
3.1 BLOCK DIAGRAM ................................................................................................................................... 12
3.2 OVERALL WIRING CONNECTION DIAGRAM........................................................................................ 14
3.3 MAIN ASSY (1/3) ..................................................................................................................................... 16
3.4 MAIN ASSY (2/3) ..................................................................................................................................... 18
3.5 MAIN ASSY (3/3) ..................................................................................................................................... 20
3.6 DSP ASSY (1/2)....................................................................................................................................... 22
3.7 DSP ASSY (2/2)....................................................................................................................................... 24
3.8 AMP & PRIMARY (1/2), TRANS2 and TRANS3 ASSYS ......................................................................... 26
3.9 AMP & PRIMARY (2/2), REG., AMP INPUT and TRANS1 ASSYS ......................................................... 28
3.10 VIDEO, 6CH IN, BOARD TO BOARD and S. VIDEO ASSYS ................................................................ 30
3.11 FRONT, R. ENCODER and POWER SW ASSYS ................................................................................. 32
3.12 TRANS4, F.VIDEO, H.P. and DIGITAL IN ASSYS .................................................................................. 34
3.13 FM/AM TUNER MODULE ...................................................................................................................... 36
4. PCB CONNECTION DIAGRAM ..................................................................................................................... 38
4.1 REGULATOR ASSY................................................................................................................................. 38
4.2 TRANS2, TRANS3, TRANS1 and TRANS4 ASSYS ................................................................................ 39
4.3 MAIN ASSY ............................................................................................................................................. 40
4.4 DSP ASSY ............................................................................................................................................... 44
4.5 AMP & PRIMARY and AMP INPUT ASSYS ............................................................................................ 46
4.6 FRONT, R. ENCODER, POWER SW and H. P. ASSYS .......................................................................... 48
4.7 BOARD TO BOARD, DIGITAL IN, VIDEO and 6CH IN ASSYS ............................................................... 52
4.8 S. VIDEO and FRONT VIDEO ASSYS .................................................................................................... 54
4.9 FM/AM TUNER MODULE ........................................................................................................................ 56
5. PCB PARTS LIST ........................................................................................................................................... 57
6. ADJUSTMENT ............................................................................................................................................... 63
6.1 TUNER SECTION .................................................................................................................................... 63
7. GENERAL INFORMATION ............................................................................................................................. 64
7.1 DIAGNOSIS ............................................................................................................................................. 64
7.1.1 DISASSEMBLY AND DIAGNOSIS........................................................................................................ 64
7.1.2 PCB LOCATION.................................................................................................................................... 65
7.2 PARTS...................................................................................................................................................... 66
7.2.1 IC .......................................................................................................................................................... 66
7.2.2 DISPLAY ............................................................................................................................................... 80
7.3 EXPLANATION ........................................................................................................................................ 82
7.3.1 POWER ON AND OFF INITIAL TIMING CHART.................................................................................. 82
7.3.2 IC DATA TRANSMISSION TIMING CHART .......................................................................................... 84
7.3.3 DETECTION CIRCUIT.......................................................................................................................... 85
7.3.4 AMPLIFIER SYSTEM PROTECTION OPERATION SPECIFICATION ................................................. 86
7.4 CLEANING............................................................................................................................................... 86
8. PANEL FACILITIES ........................................................................................................................................ 87