Specifications

44
LC-20D30U
TROUBLE SHOOTING TABLE
No or Wrong Picture
Are the waveforms at
pins (105), (91), (103)
and (104)of IC801 as
specified?
Check IC801 and its
peripheral circuits as
well as IC1203 and its
peripheral circuits.
Check the related lines,
IC801 itself and its
peripheral circuits.
Are the waveforms at the signal
input pins of IC801 as specified?
TV/Composite … Pin (40)
S Video … Pins (42) and (31)
Component … Pins (21), (33) and
(44)
Check the IC801 signal
input line.
Check IC801 and its
peripheral circuits.
No
No
No
Yes
Yes
Yes
Does the IC801 test pattern appear
properly?