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TROUBLESHOOTING GUIDE
2-6) NO ON-SCREEN DISPLAY
I501
DCT814B
XCS01
#64
32KHz
Check
the crystal
OSD R
Check
data/clock signal
Check
the waveform
ICS01
TIMER/SYSCON
OSD G
OSD B
BLANK
#63
#62
#60
#14
#15
#16
#17
#71
#72
MCLK
MDATA
XS02 LS01
16MHz
#35 #36 #38 #39 #44 #45
Check
OSD R/G/B/BLK
signal
#12
#11
#58 #59
H.SYNC V.SYNC
Check
the signal
(15,734Hz)
Check
the signal
(60Hz)
#37
#34RESET
Vcc(5V)
If OSD does not operate,
then change the ICS01