LG BD530, Service Manual

Page: 16 / 109

SECTION 3
ELECTRICAL
CONTENTS
DIGITAL DISPLAY & MEDIA TRAINING MASTER
......................................................................... 3-2
1. DISTORTED PICTURE ........................................................................................................................... 3-2
2. NO PICTURE .......................................................................................................................................... 3-7
3. PICTURE COLOR ................................................................................................................................. 3-12
4. NOISE/AUDIO PROBLEMS .................................................................................................................. 3-14
5. MISCELLANEOUS ................................................................................................................................ 3-17
6. BLU-RAY PLAYER ............................................................................................................................... 3-26
7. YouTube ................................................................................................................................................ 3-27
8. ACCUWEATHER .................................................................................................................................. 3-28
ONE POINT REPAIR INSTRUCTION
................................................................................................. 3-29
1. NO POWER PROBLEM ....................................................................................................................... 3-29
2. CLOCK DOESN’T DISPLAY ................................................................................................................. 3-31
3. NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE OR
“HELLO” ON FRONT PANEL ............................................................................................................... 3-32
4. WIRED NETWORK CONNECTION ERROR ....................................................................................... 3-42
5. BAD HDMI VIDEO / AUDIO OUTPUT .................................................................................................. 3-43
ELECTRICAL TROUBLESHOOTING GUIDE
.................................................................................. 3-44
1. POWER SUPPLY ON SMPS BOARD .................................................................................................. 3-44
2. POWER SUPPLY ON MAIN BOARD ................................................................................................... 3-46
3. SYSTEM PART ..................................................................................................................................... 3-48
4. NO CVBS VIDEO OUTPUT .................................................................................................................. 3-50
5. NO COMPONENT (YPbPr / RGB) ....................................................................................................... 3-51
6. NO COAXIAL AUDIO OUTPUT ............................................................................................................ 3-52
7. NO ANALOG AUDIO L/R OUTPUT ...................................................................................................... 3-53
8. NO HDMI OUTPUT ............................................................................................................................... 3-54
WAVEFORMS
............................................................................................................................................. 3-55
1. SYSTEM PART - 1 ............................................................................................................................... 3-55
2. SYSTEM PART - 2 (SYSTEM MEMORY) ............................................................................................ 3-56
3. VIDEO PART (100% FULL COLOR BAR) ........................................................................................... 3-57
4. AUDIO PART (S/PDIF) ......................................................................................................................... 3-58
5. HDMI PART .......................................................................................................................................... 3-59
WIRING DIAGRAM
.................................................................................................................................... 3-61
BLOCK DIAGRAMS
................................................................................................................................. 3-63
1. OVERALL BLOCK DIAGRAM .............................................................................................................. 3-63
2. SMPS BLOCK DIAGRAM ..................................................................................................................... 3-64
3. POWER SIGNAL BLOCK DIAGRAM ................................................................................................... 3-65
4. SYSTEM BLOCK DIAGRAM ................................................................................................................ 3-66
5. INPUT / OUTPUT BLOCK DIAGRAM .................................................................................................. 3-67
6. TIMER BLOCK DIAGRAM .................................................................................................................... 3-68
CIRCUIT DIAGRAMS
............................................................................................................................... 3-69
1. SMPS & TIMER CIRCUIT DIAGRAM ................................................................................................... 3-69
2. MAIN POWER CIRCUIT DIAGRAM ..................................................................................................... 3-71
3. MAIN MPEG CIRCUIT DIAGRAM ........................................................................................................ 3-73
4. MAIN DDR & MEMORY CIRCUIT DIAGRAM ...................................................................................... 3-75
5. MAIN SERVO CIRCUIT DIAGRAM ...................................................................................................... 3-77
6. MAIN A/V OUTPUT CIRCUIT DIAGRAM ............................................................................................. 3-79
CIRCUIT VOLTAGE CHART
................................................................................................................. 3-81
PRINTED CIRCUIT BOARD DIAGRAMS
.......................................................................................... 3-83
1. MAIN P.C.BOARD ................................................................................................................................ 3-83
2. SMPS P.C.BOARD ............................................................................................................................... 3-85
3. TIMER P.C. BOARD ............................................................................................................................. 3-87
3-1