Table Of Contents - LG LST-5600A Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE ..................................................................................................3-2
1. Power(SMPS) CIRCUIT ...........................................................................................................................3-2
2. CPU(SYSTEM CONTROL) TROUBLESHOOTING................................................................................3-4
3. ATSC/QAM FRONT_END TROUBLESHOOTING.................................................................................3-12
4. NTSC/FRONT_END TROUBLESHOOTING..........................................................................................3-14
5. FPGA TROUBLESHOOTING ................................................................................................................3-15
6. VIDEO TROUBLESHOOTING ...............................................................................................................3-16
7. AUDIO TROUBLESHOOTING ...............................................................................................................3-29
BLOCK DIAGRAM ..........................................................................................................................................3-38
1. OVERALL BLOCK DIAGRAM ...............................................................................................................3-38
2. POWER BLOCK DIAGRAM ..................................................................................................................3-39
3. BLOCK DIAGRAM .................................................................................................................................3-40
CIRCUIT DIAGRAMS ......................................................................................................................................3-41
1. POWER(SMPS) CIRCUIT DIAGRAM ....................................................................................................3-41
2. CPU & SYSTEM MEMORY CIRCUIT DIAGRAM ..................................................................................3-43
3. CPU PERI & IR-IN & AUX-CTRL CIRCUIT DIAGRAM .........................................................................3-45
4. TERRESTRIAL FRONT_END CIRCUIT DIAGRAM .............................................................................3-47
5. HD2 & SDRAM CIRCUIT DIAGRAM .....................................................................................................3-49
6. DVI TRANSMITTER CIRCUIT DIAGRAM .............................................................................................3-51
7. VDP I/F & DISPLAY OUTPUT CIRCUIT DIAGRAM..............................................................................3-53
8. NTSC AUDIO PROCESSOR CIRCUIT DIAGRAM................................................................................3-55
9. POWER REGULATION CIRCUIT DIAGRAM ........................................................................................3-57
10. FPGA FOR DECRYOPTION CIRCUIT DIAGRAM ..............................................................................3-59
PRINTED CIRCUIT DIAGRAMS .....................................................................................................................3-61
1. DIGITAL MAIN PRINTED CIRCUIT DIAGRAMS(TOP).........................................................................3-61
2. DIGITAL MAIN PRINTED CIRCUIT DIAGRAMS(BOTTOM).................................................................3-63
3. MPI PRINTED CIRCUIT DIAGRAM(TOP) .............................................................................................3-65
4. PTC PRINTED CIRCUIT DIAGRAM ......................................................................................................3-67
5. BACK PLANE PRINTED CIRCUIT DIAGRAM......................................................................................3-69
6. POWER PRINTED CIRCUIT DIAGRAM................................................................................................3-70
SECTION 3
ELECTRICAL
CONTENTS
3-1