4-5
4. Troubleshooting
4-4. No Video (DVI)
Symptom
- The LED power turns on but the screen is blank when the DVI cable is connected.
Major
checkpoints
- Check the DVI cable connections.
- Check whether the LVDS cable is connected correctly to the panel.
- Check whether the lamp connector of the panel is connected correctly to the IP board.
Diagnostics
Yes
1
Check signal cable connection
and power.
Yes
Replace or check related
circuit.
No
X1 oscillate properly?
Is there R, G, B input at
R100,R101,R102,R106
and R108?
Check input part.
No
Yes
Does the output signal appear
at Pin 17~20, 22~27 of CN400?
Check IC400 and related
circuit.
No
Yes
There are DC 5V at Pin 1,
2 and 3 of CN400?
Check the PANEL_EN signal
at R222 and BL_EN signal at
R603.
No
Yes
Replace LCD Panel.
4
5
6
Caution
Make sure to disconnect the power before working on the IP board.
Main Board Front
Содержание SyncMaster 2032BW
Страница 7: ...1 4 1 Precautions Memo...
Страница 11: ...2 4 2 Product specifications Memo...
Страница 31: ...4 14 4 Troubleshooting Memo...
Страница 48: ...5 1 5 Exploded View and Parts List 5 Exploded View and Parts List 5 1 Exploded View...
Страница 55: ...6 4 6 Wiring Diagram Memo...
Страница 57: ...7 2 7 Schematic Diagram 7 2 Schematic Diagrams 7 2 1 Scaler IC200 Block 1 2 1 2...
Страница 58: ...7 3 7 Schematic Diagram 7 2 2 LVDS conntor CN400...
Страница 59: ...7 4 7 Schematic Diagram 7 2 3 VGA Input CN101 DVI Input CN102 Block 3 4 3 4...
Страница 60: ...7 5 7 Schematic Diagram 7 2 4 Function Input CN200 Block...
Страница 61: ...7 6 7 Schematic Diagram Memo...
