Specifications

47
LC-20D30U
TROUBLE SHOOTING TABLE (Continued)
No pictures come out (3/3).
No HDMI pictures come out.
Is the voltage at pin
(19) of SC402 as
specified?
Yes
No
Yes
Are the waveform at pins
(5), and (6) of IC403 as
specified?
Are the waveform at
pins (5), and (6) of
IC8704 as specified?
Are the waveform at
input pins (108), (109),
(111), (112). (114), (115),
(117), (118), (124), and
(125) as specified?
No
Yes
Yes
No
Check the line of
pin (19) of SC402.
Check IC403 and
its peripheral parts.
Check IC8704 and
its peripheral parts.
No
Check the each
input line.
No pictures come out (2/3).
No PC pictures come out.
Check if the adjustment process menu of the
microprocessor is set properly.
No
Yes
Are the inputs at pins (2),
(3), (6), (8), (9) and (11)
of IC8701 as specified?
Is the output of IC8701
as specified?
Is the input of IC801 as
specified?
No
Yes
No
Yes
Check the output of IC801,
the input and output of
IC1203 and their
peripheral parts.
Check the input line
and its peripheral
parts.
Check IC8701 and
its peripheral parts.
Check IC801 and
its peripheral parts.