LG HX966TZ Service Manual page 14

DIGITAL DISPLAY & MEDIA TRAINING MASTER ......................................................................................... 2-2
ONE PONIT REPAIR GUIDE .......................................................................................................................... 2-77
1. NO POWER PROBLEM ....................................................................................................................... 2-77
2. THE LAYOUT OF MAIN BOARD ......................................................................................................... 2-79
3. NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE OR "PLEASE WAIT" ON FRONT PANEL ... 2-81
4. WIRED NETWORK CONNECTION ERROR ....................................................................................... 2-90
5. BAD HDMI VIDEO / AUDIO OUTPUT .................................................................................................. 2-91
6. BAD HDMI VIDEO / AUDIO INPUT ...................................................................................................... 2-92
ELECTRICAL TROUBLESHOOTING GUIDE ................................................................................................. 2-93
1. POWER SUPPLY ON SMPS BOARD .................................................................................................. 2-93
2. POWER SUPPLY ON MAIN BOARD ................................................................................................... 2-95
3. SYSTEM PART ..................................................................................................................................... 2-97
4. NO CVBS VIDEO OUTPUT .................................................................................................................. 2-99
5. NO AUDIO OUTPUT .......................................................................................................................... 2-100
6. NO HDMI OUTPUT ............................................................................................................................. 2-103
7. NO HDMI INPUT ................................................................................................................................. 2-104
8. TOUCH TROUBLESHOOTING .......................................................................................................... 2-105
WAVEFORMS ................................................................................................................................................ 2-107
1. SYSTEM PART-1 (X-TAL) .................................................................................................................. 2-107
2. SYSTEM PART-2 (DDR3 MEMORY) ................................................................................................. 2-108
3. VIDEO PART (100% FULL COLOR-BAR) ......................................................................................... 2-109
4. HDMI PART ........................................................................................................................................ 2-110
5. MICOM AND MPEG I/F PART............................................................................................................ 2-111
WIRING DIAGRAM ........................................................................................................................................ 2-113
BLOCK DIAGRAMS ...................................................................................................................................... 2-115
1. SMPS BLOCK DIAGRAM ................................................................................................................... 2-115
2. MPEG / AMP BLOCK DIAGRAM ....................................................................................................... 2-117
3. HDMI / VFD / TOUCH / VIDEO / DC-DC BLOCK DIAGRAM ............................................................ 2-119
4. POWER - BCM / FE / MICOM / HDMI BLOCK DIAGRAM ................................................................ 2-121
5. POWER - DSP / ADC / DIR BLOCK DIAGRAM ................................................................................ 2-123
6. POWER - FRONT / i-Pod / USB / Wi-Fi / TOUCH BLOCK DIAGRAM .............................................. 2-125
CIRCUIT DIAGRAMS .................................................................................................................................... 2-127
1. SMPS CIRCUIT DIAGRAM ................................................................................................................ 2-127
2. MAIN - CPU#1 CIRCUIT DIAGRAM ................................................................................................... 2-129
3. MAIN - CPU#2 CIRCUIT DIAGRAM ................................................................................................... 2-131
4. MAIN - DDR3, NAND CIRCUIT DIAGRAM ........................................................................................ 2-133
5. MAIN - BCM7633 FRONT END CIRCUIT DIAGRAM ........................................................................ 2-135
6. MAIN - MICOM CIRCUIT DIAGRAM .................................................................................................. 2-137
7. MAIN - HDMI CIRCUIT DIAGRAM ..................................................................................................... 2-139
8. MAIN - ADC, DIR CIRCUIT DIAGRAM .............................................................................................. 2-141
9. MAIN - DSP CIRCUIT DIAGRAM ....................................................................................................... 2-143
10. MAIN - POWER CIRCUIT DIAGRAM ................................................................................................. 2-145
11. MAIN - I/O CIRCUIT DIAGRAM .......................................................................................................... 2-147
12. PWM CIRCUIT DIAGRAM .................................................................................................................. 2-149
13. AMP CIRCUIT DIAGRAM ................................................................................................................... 2-151
14. FRONT JACK CIRCUIT DIAGRAM - OPTIONAL PART .................................................................... 2-153
15. FRONT CIRCUIT DIAGRAM .............................................................................................................. 2-157
16. FUNCTION TOUCH CIRCUIT DIAGRAM .......................................................................................... 2-159
17. POWER TOUCH CIRCUIT DIAGRAM ............................................................................................... 2-161
CIRCUIT VOLTAGE CHART ......................................................................................................................... 2-163
PRINTED CIRCUIT BOARD DIAGRAMS ..................................................................................................... 2-165
1. MAIN P. C. BOARD DIAGRAM .......................................................................................................... 2-165
2. SMPS P. C. BOARD DIAGRAM ......................................................................................................... 2-167
3. AMP P. C. BOARD DIAGRAM ........................................................................................................... 2-169
4. FRONT P. C. BOARD DIAGRAM ....................................................................................................... 2-171
5. FUNCTION TOUCH P. C. BOARD DIAGRAM ................................................................................... 2-173
6. POWER TOUCH P. C. BOARD DIAGRAM ........................................................................................ 2-174
7. JACK P. C. BOARD DIAGRAM (OPTIONAL PART) .......................................................................... 2-175
SECTION 2 ELECTRICAL
CONTENTS
2-1