34
6. TROUBLE SHOOTING
Check
the tuner
(TU701 & TU702
NO
NO
YES
1
1
2
2
1
NO
2
1
END
OSD
OSD
Check LA1 TV video signal
Main tuner (TV701 CVBS #41)
Sub tuner (TV702 CVBS #27)
Is there OSD
on the screen?
No screen mode
1. TV external input
2. Component input
Check LA5 input/output
Input
- COMP1:Y-#43, Cb/Pb-#42, Cr/Pr-#41
- COMP2:Y-#3, Cb/Pb-#2, Cr/Pr-#1
Output
- Y-#27, Cb/Pb-#26, Cr/Pr-#25
Check input signal
1. 480i
2. 480p/1080I
Check I701 OSD signal
R, G, B:#64, #63, #62
BL:#61
Check IC201 input/output
Input
-ICD1 Output
Y:#69, Cb:#68, Cr:#67, H:#66, B:#65
-IA5 Output
Y:#5, Cb:#4, Cr:#3
-OSD
R, G, B:#50, #51, #52
BL:#49
Output
R, G, B:#35, #37, #39
HS:#29, VS:#28
Check external
input signal
Check LA1 output signal
1. CVBS_Main:#34, Y:#37, C:#39
2. CVBS_Sub:#17
Check ICB1 input/output
Y/CVBS_Main Input:#88
C Input:#96
Y/CVBS_Main Output:#84
C Output:#83
Check ICD1 input/output
Input
1. Y/CVBS_Main:#55, C_Main:#54
2. CVBS_Sub:#52
3. 480i:#46(Cr), #47(Y), #48(Cb)
Output
Y:#2, Cb:#79, Cr:#76, H:#17, V:#23
Check LA1 video signal
Video1:#43-CVBS, #45-Y, #47-C
Video2:#1-CVBS, #3-Y, #5-C
Video3:#7-CVBS, #9-Y, #11-C
No screen mode
1. TV (RF signal)
2. AV input
When the screen
doesn’t turn up
AV/RF Signal
