Daewoo DLP-2612 Service Manual page 32

C. When ¡° No Signal¡±in Y/Pb/Pr signal (Component)
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 (COMP1_Y): LCI27(Bottom, Main) near JP3, Second pin of ICI2, 4th pin of
- Main TP (COMP1_Pb): LCI22(Bottom, Main) near JP3, 5th pin of ICI2, 7th pin of ICI2,
- Main TP (COMP1_Pr): LCI18(Bottom, Main) near JP3, 11th pin of ICI2, 9th pin of ICI2,
- Main TP (COMP2_Y): LCI26(Bottom, Main) near JP3, Third pin of ICI2, 4th pin of ICI2,
- Main TP (COMP2_Pb): LCI21(Bottom, Main) near JP3, 6th pin of ICI2, 7th pin of ICI2,
- Main TP (COMP2_Pr): LCI17(Bottom, Main) near JP3, 11th pin of ICI2, 10th pin of
=> If all TP signal does not appear, replace MAIN PCB.
ICI2, 19th pin of ICI3, LCA4(Top, Main) near ICA10
14th pin of ICI3, LCA5(Top, Main) near ICA10
21th pin of ICI3, LCA3(Top, Main) near ICA10
19th pin of ICI3, LCA4(Top, Main) near ICA10
14th pin of ICI3, LCA5(Top, Main) near ICA10
ICI2, 21th pin of ICI3, LCA3(Top, Main) near ICA10
Y signal (LCA4)
Pb signal (LCA5)
-32-