4 Troubleshooting
4-2
4-2-1 No Power
4-2 Checkpoints by Error Mode
Does proper DC 13V
appear at JP845?
Change a Assy PCB Power.
Yes
Yes
No
Check a connection a power cable.
No
Does proper DC A3.3V,
A5V appear at
C854, C1166_LCD?
Check a IC1112, Q1103.
Change a main PCB ass'y.
Yes
No
Does proper DC 5V, 3.3V,
1.2V appear at C1153, C1178,
C1170?
Check a IC1111, IC1102, IC1113.
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?
TIP: How to drive the circuit by force when LCD panel Lamp is faulty.
- It is available to drive the circuit when the pin of 2 in Main_Power_control CN1101
connect the pin of 4.
Summary of Contents for LE37M87BDX
Page 21: ...7 Block Diagrams 7 2 Memo ...
Page 24: ...13 Circuit Descriptions 13 3 13 2 Main Block ...
Page 25: ...13 Circuit Descriptions 13 4 13 3 IP Board ...
Page 31: ...11 Disassembly and Reassembly 11 6 Memo ...
Page 77: ...10 Operating Instructions and Installation 10 6 Memo ...
Page 79: ...12 PCB Diagram 12 2 12 2 IP Board Diagram ...
Page 83: ...Memo 1 Precautions 1 4 ...
Page 91: ...2 Product Specifications 2 8 Memo ...
Page 99: ...14 Reference Infomation 14 8 14 3 2 Supported Modes 1 ...
Page 100: ...14 Reference Infomation 14 9 14 3 3 Supported Modes 2 ...
Page 101: ...14 Reference Infomation 14 10 14 3 4 Supported Modes 3 ...
Page 121: ...4 Troubleshooting 4 4 WAVEFORMS 1 R G B Output Signal of IC2001 ...
Page 123: ...4 Troubleshooting 4 6 2 Digital Output Data of IC4001 3 Signal of HDMI Data ...
Page 125: ...4 Troubleshooting 4 8 WAVEFORMS 4 Tuner_CVBS Output Signal 3 CVBS Output Signal ...
Page 127: ...4 Troubleshooting 4 10 WAVEFORMS 4 CVBS Output Signal ...
Page 132: ...8 1 8 Wiring Diagrams 8 Wiring Diagram 8 1 Wiring Diagram ...
Page 137: ...8 Wiring Diagrams 8 6 8 4 Power Board Layout ...
Page 140: ...8 9 8 Wiring Diagrams ...
Page 143: ...8 Wiring Diagrams 8 12 Memo ...