4 Troubleshooting
4-2
4-2-1 No Power
4-2 Checkpoints by Error Mode
Does proper DC 12V
appear at CN800?
Change a Assy PCB Power.
Yes
Yes
No
Check a connection a power cable.
No
Does proper DC A3.3V,
A5V appear at
C854, C866?
Check a IC809, IC802.
Change a main PCB ass'y.
Yes
No
Does proper DC 5V, 3.3V,
1.8V appear at C811, C853,
C833?
Check a IC803, IC805, IC813, IC307.
Change a main PCB ass'y
Yes
A power is supplied to set?
Check a other function.
(No picture part)
Replace a lcd panel.
No
No
LAMP off, power indicator
LED red color?
Summary of Contents for LN26T71B
Page 3: ...Contents ...
Page 4: ...Contents ...
Page 8: ...Memo 1 Precautions 1 4 ...
Page 10: ...2 2 LN26T71B Specifications 2 Product Specifications 2 2 Item Description ...
Page 25: ...3 Alignments and Adjustments 3 11 Picture 4 3 W B Patten ...
Page 30: ...4 Troubleshooting 4 4 WAVEFORMS 1 R G B Output Signal of IC500 ...
Page 32: ...4 Troubleshooting 4 6 2 Digital Output Data of IC500 3 Signal of HDMI Data ...
Page 34: ...4 Troubleshooting 4 8 WAVEFORMS 4 Tuner_CVBS Output Signal 3 CVBS Output Signal ...
Page 36: ...4 Troubleshooting 4 10 WAVEFORMS 4 CVBS Output Signal ...
Page 38: ...4 Troubleshooting 4 12 2 Digital Output Data of IC500 5 Analog Signal Y C to IC500 WAVEFORMS ...
Page 40: ...4 Troubleshooting 4 14 WAVEFORMS 6 The Signal are Inputed to IC603 7 DC 12V ...
Page 95: ...8 1 8 Wiring Diagrams 8 Wiring Diagram 8 1 LN26T71B LN32T71B LN40T71B Wiring Diagram ...
Page 96: ...8 Wiring Diagrams 8 2 8 2 Main Board Layout ...
Page 99: ...8 5 8 Wiring Diagrams ...
Page 100: ...8 Wiring Diagrams 8 6 8 4 Power Board Layout ...
Page 103: ...8 9 8 Wiring Diagrams ...
Page 106: ...8 Wiring Diagrams 8 12 Memo ...
Page 109: ...9 Schematic Diagrams 9 3 9 3 Micom Schematic Diagram ...
Page 110: ...9 Schematic Diagrams 9 4 9 4 SVP PX PX Power LBE Option Schematic Diagram ...
Page 111: ...9 Schematic Diagrams 9 5 9 5 Application Schematic Diagram ...
Page 112: ...9 Schematic Diagrams 9 6 Memo ...
Page 117: ...10 Operating Instructions and Installation 10 5 ...
Page 118: ...10 Operating Instructions and Installation 10 6 Memo ...
Page 124: ...11 Disassembly and Reassembly 11 6 Memo ...
Page 125: ...12 PCB Diagram 12 1 12 PCB Diagram 12 1 26 Main PCB Diagram ...
Page 126: ...12 PCB Diagram 12 2 12 2 32 40 Main PCB Diagram ...
Page 127: ...12 PCB Diagram 12 3 12 3 26 SMPS board ...
Page 128: ...12 PCB Diagram 12 4 12 4 32 SMPS board ...
Page 129: ...12 PCB Diagram 12 5 12 5 40 IP Board ...
Page 130: ...12 PCB Diagram 12 6 Memo ...
Page 133: ...13 Circuit Descriptions 13 3 13 2 Main Block ...
Page 134: ...13 Circuit Descriptions 13 4 13 3 SMPS Board 13 3 1 26 32 SMPS Block 13 3 2 26 32 SMPS Block ...
Page 135: ...13 Circuit Descriptions 13 5 13 3 3 26 32 SMPS Block 13 3 4 26 32 SMPS Block ...
Page 136: ...13 Circuit Descriptions 13 6 ...
Page 137: ...13 Circuit Descriptions 13 7 13 3 5 32 40 IP Board 13 3 6 32 40 IP Board ...
Page 138: ...Memo 13 Circuit Descriptions 13 8 ...
Page 145: ...14 Reference Infomation 14 7 14 3 2 Supported Modes 1 ...
Page 146: ...14 Reference Infomation 14 8 14 3 3 Supported Modes 2 ...
Page 147: ...14 Reference Infomation 14 9 14 3 4 Supported Modes 3 ...