LG BD630, Service Manual

Page: 16 / 109

3-1
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
ONE POINT REPAIR GUIDE
........................................................................................................................ 3-28
1. NO POWER PROBLEM ....................................................................................................................... 3-28
2. CLOCK DOESN’T DISPLAY ................................................................................................................. 3-30
3. NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE OR
“HELLO” ON FRONT PANEL ............................................................................................................... 3-31
4. WIRED NETWORK CONNECTION ERROR ....................................................................................... 3-41
5. BAD HDMI VIDEO / AUDIO OUTPUT .................................................................................................. 3-42
ELECTRICAL TROUBLESHOOTING GUIDE ............................................................................................. 3-43
1. POWER SUPPLY ON SMPS BOARD .................................................................................................. 3-43
2. POWER SUPPLY ON MAIN BOARD ................................................................................................... 3-45
3. SYSTEM PART ..................................................................................................................................... 3-47
4. NO CVBS VIDEO OUTPUT .................................................................................................................. 3-49
5. NO COMPONENT (YPbPr / RGB) ....................................................................................................... 3-50
6. NO COAXIAL AUDIO OUTPUT ............................................................................................................ 3-51
7. NO ANALOG AUDIO L/R OUTPUT ...................................................................................................... 3-52
8. NO HDMI OUTPUT ............................................................................................................................... 3-53
WAVEFORMS
................................................................................................................................................. 3-54
1. SYSTEM PART - 1 ............................................................................................................................... 3-54
2. SYSTEM PART - 2 (SYSTEM MEMORY) ............................................................................................ 3-55
3. VIDEO PART (100% FULL COLOR BAR) ........................................................................................... 3-56
4. AUDIO PART (S/PDIF) ......................................................................................................................... 3-57
5. HDMI PART .......................................................................................................................................... 3-58
WIRING DIAGRAM
........................................................................................................................................ 3-60
BLOCK DIAGRAMS
...................................................................................................................................... 3-62
1. OVERALL BLOCK DIAGRAM .............................................................................................................. 3-62
2. SMPS BLOCK DIAGRAM ..................................................................................................................... 3-63
3. POWER SIGNAL BLOCK DIAGRAM ................................................................................................... 3-64
4. SYSTEM BLOCK DIAGRAM ................................................................................................................ 3-65
5. INPUT / OUTPUT BLOCK DIAGRAM .................................................................................................. 3-66
6. TIMER BLOCK DIAGRAM .................................................................................................................... 3-67
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. LED P.C. BOARD ................................................................................................................................. 3-87