LG HB954TB Service Manual page 10

TRAINING MASTER FOR BLU-RAY (BD) .................................................................................................... 2-2
1. DISTORTED PICTURE ........................................................................................................................... 2-2
2. NO PICTURE .......................................................................................................................................... 2-7
3. PICTURE COLOR ................................................................................................................................. 2-12
4. NOISE/AUDIO PROBLEMS .................................................................................................................. 2-14
5. MISCELLANEOUS ................................................................................................................................ 2-17
6. BLU-RAY PLAYER ............................................................................................................................... 2-26
7. YouTube ................................................................................................................................................ 2-28
ELECTRICAL TROUBLESHOOTING GUIDE ............................................................................................. 2-30
1. SMPS PART CHECK ............................................................................................................................ 2-30
2. AMP PROTECTION .............................................................................................................................. 2-31
3. POWER KEY OPERATION .................................................................................................................. 2-32
4. FRONT BLOCK ..................................................................................................................................... 2-33
5. TOUCH KEY BLOCK ............................................................................................................................ 2-34
6. NO AUDIO CHECK ............................................................................................................................... 2-35
7. NO VIDEO CHECK ............................................................................................................................... 2-37
8. HDMI NO AUDIO/VIDEO CHECK (with HDMI IN) ............................................................................... 2-39
9. HDMI NO AUDIO/VIDEO CHECK (without HDMI IN) .......................................................................... 2-41
WAVEFORMS ................................................................................................................................................. 2-42
1. SYSTEM PART-1 .................................................................................................................................. 2-42
2. SYSTEM PART-2 (SYSTEM MEMORY) .............................................................................................. 2-43
3. VIDEO PART-1 (100% FULL COLOR-BAR) ........................................................................................ 2-44
4. VIDEO PART-2 (100% FULL COLOR-BAR) ........................................................................................ 2-45
5. HDMI PART .......................................................................................................................................... 2-46
6. MICOM AND MPEG I/F PART.............................................................................................................. 2-47
WIRING DIAGRAM ........................................................................................................................................ 2-49
BLOCK DIAGRAM ......................................................................................................................................... 2-51
CIRCUIT DIAGRAMS .................................................................................................................................... 2-53
1. SMPS CIRCUIT DIAGRAM .................................................................................................................. 2-53
2. CPU BCM7440-1 CIRCUIT DIAGRAM ................................................................................................. 2-55
3. CPU BCM7440-2 CIRCUIT DIAGRAM ................................................................................................. 2-57
4. DDR FLASH, CP CIRCUIT DIAGRAM ................................................................................................. 2-59
5. MICOM CIRCUIT DIAGRAM ................................................................................................................ 2-61
6. HDMI CIRCUIT DIAGRAM.................................................................................................................... 2-63
7. CPLD CIRCUIT DIAGRAM ................................................................................................................... 2-65
8. ADC/DIR CIRCUIT DIAGRAM .............................................................................................................. 2-67
9. DSP CIRCUIT DIAGRAM ..................................................................................................................... 2-69
10. POWER INTERFACE CIRCUIT DIAGRAM .......................................................................................... 2-71
11. IO INTERFACE CIRCUIT DIAGRAM ................................................................................................... 2-73
12. PWM CIRCUIT DIAGRAM .................................................................................................................... 2-75
13. AMP CIRCUIT DIAGRAM ..................................................................................................................... 2-77
14. FRONT CIRCUIT DIAGRAM ................................................................................................................ 2-79
15. POWER JUNCTION CIRCUIT DIAGRAM ............................................................................................ 2-81
16. POWER KEY CIRCUIT DIAGRAM ....................................................................................................... 2-83
17. IPOD CIRCUIT DIAGRAM .................................................................................................................... 2-85
18. TOUCH CIRCUIT DIAGRAM ................................................................................................................ 2-87
CIRCUIT VOLTAGE CHART ........................................................................................................................ 2-89
PRINTED CIRCUIT BOARD DIAGRAMS .................................................................................................... 3-93
1. MAIN P.C.BOARD ................................................................................................................................ 2-93
2. SMPS P.C.BOARD ............................................................................................................................... 2-97
3. AMP P.C.BOARD ................................................................................................................................ 2-101
4. FRONT P.C.BOARD ........................................................................................................................... 2-103
5. IPOD P.C.BOARD ............................................................................................................................... 2-103
6. TOUCH PAD P.C.BOARD .................................................................................................................. 2-103
SECTION 2
ELECTRICAL
CONTENTS
2-1