SECTION 3
ELECTRICAL
CONTENTS
ELECTRICAL TROUBLESHOOTING GUIDE
....................................................................................
3-2
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING
................................
3-16
WIRING DIAGRAM
...................................................................................................................................
3-29
BLOCK DIAGRAM
....................................................................................................................................
3-31
CIRCUIT DIAGRAMS
...............................................................................................................................
3-33
1. SMPS - POWER CIRCUIT DIAGRAM ................................................................................................. 3-33
2. MAIN - MICOM CIRCUIT DIAGRAM .................................................................................................... 3-35
3. MAIN - PWM CIRCUIT DIAGRAM ....................................................................................................... 3-37
4. MAIN - AMP CIRCUIT DIAGRAM ........................................................................................................ 3-39
5. MAIN - DECK CIRCUIT DIAGRAM ...................................................................................................... 3-41
6. MAIN - MPEG CIRCUIT DIAGRAM ..................................................................................................... 3-43
7. MAIN - SERVO CIRCUIT DIAGRAM ................................................................................................... 3-45
8. MAIN - I/O CIRCUIT DIAGRAM ........................................................................................................... 3-47
9. VFD CIRCUIT DIAGRAM ..................................................................................................................... 3-49
10. MIC & USB CIRCUIT DIAGRAM .......................................................................................................... 3-51
11. VOLUME CIRCUIT DIAGRAM ............................................................................................................. 3-53
12. IPOD CIRCUIT DIAGRAM (OPTIONAL PART) ................................................................................... 3-55
13. KARAOKE CIRCUIT DIAGRAM (OPTIONAL PART) ........................................................................... 3-57
CIRCUIT VOLTAGE CHART
.................................................................................................................
3-59
PRINTED CIRCUIT BOARD DIAGRAMS
.........................................................................................
3-61
1. MAIN P.C.BOARD ................................................................................................................................ 3-61
2. SMPS P.C.BOARD ............................................................................................................................... 3-65
3. FRONT(VFD / USB & MIC / VOLUME) P.C.BOARD ........................................................................... 3-67
4. IPOD P.C.BOARD (OPTIONAL PART) ................................................................................................ 3-69
5. KARAOKE P.C.BOARD (OPTIONAL PART) ....................................................................................... 3-69
3-1
Summary of Contents for MDT505
Page 11: ...2 2 MEMO ...
Page 15: ...2 9 2 10 MEMO MEMO ...
Page 16: ...2 11 4 SPEAKER SECTION 4 1 FRONT SPEAKER MDS505V A60 ...
Page 17: ...2 12 4 2 PASSIVE SUBWOOFER MDS505W A90 ...
Page 19: ...2 14 MEMO ...
Page 37: ...3 18 3 VIDEO PART 1 100 FULL COLOR BAR CVBS_I Y Pb Pr 8 9 10 11 8 10 9 11 ...
Page 38: ...3 19 4 VIDEO PART 2 100 FULL COLOR BAR CVBS COMP_Y COMP_Pb COMP_Pr 12 14 13 15 12 13 14 15 ...
Page 45: ...3 26 40 42 41 11 SPINDLE CONTROL WAVEFORMS NO DISC CONDITION FIG 11 1 42 41 40 SPinD SP SP ...
Page 47: ...3 28 MEMO ...
Page 64: ...3 61 3 62 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD TOP VIEW ...
Page 65: ...3 63 3 64 MAIN P C BOARD BOTTOM VIEW ...
Page 67: ...3 FRONT VFD USB MIC VOLUME P C BOARD 3 67 3 68 ...
Page 69: ...3 71 3 72 MEMO MEMO ...