When No Signal Or No Raster - Daewoo DLP-2612 Service Manual

D. When ¡° No Signal¡±in PC
1) First check if other inputs are working
=>If other inputs are not working, replace MAIN or SUB PCB
2) Checking waveforms with Color Bar Pattern (Using the oscilloscope)
- Main TP (R signal): LCI3(Top, Main) near D-Sub Jack, 7th pin of ICI3, 21th pin of ICI3,
- Main TP (G signal): LCI4(Top, Main) near D-Sub Jack, 9th pin of ICI3, 19th pin of ICI3,
- Main TP (B signal): LCI5(Top, Main) near D-Sub Jack, 11th pin of ICI3, 14th pin of
- Main TP (H-Sync): RCI26(Bottom, Main) near ICI4, 23th pin of ICI3, 22th pin of ICI3,
- Main TP (V-Sync): RCI25(Bottom, Main) near ICI4, 13th pin of ICI3, 14th pin of ICI3,
=> If all TP signal does not appear, replace MAIN PCB.
Pr Signal (LCA3)
LCA3(Top, Main) near ICA10
LCA4(Top, Main) near ICA10
ICI3, LCA5(Top, Main) near ICA10
30th pin of ICA10, RCA9(Top, Main) near ICA10
31th pin of ICA10, RCA8(Top, Main) near ICA10
1024 X 768, 60Hz
R signal (LCA3)
-33-