Service manual

12
LC-10A2H-S/A
LC-10A2M-S/A
TROUBLE SHOOTING TABLE
No picture
at all
Yes
No
Are inputs
and outputs
of IC802 as
specified?
Check all the settings on the microprocessor’s adjust process menu.
No picture
Check IC802
and its
peripheral
parts.
Yes
No
Are inputs
and outputs
of IC1201 as
specified?
Check
IC1201 and
its peripheral
parts.
Check LCD
panel voltage
and
waveform.
No TV and
VIDEO 1
output
Yes
No
Are inputs
and outputs
of IC402 as
specified?
Check IC402
and its
peripheral
parts.
NO
Is input at Pin
(73) of IC802
as specified?
Check IC802,
AV1 line and
their
peripheral
parts.
No TV
output
Yes
No
Are voltages
at Pins (6),
(7) and (9) of
tuner as
specified?
Check the
power line.
Yes
No
Is output at
Pin (19) of
tuner as
specified?
Check the
tuner and its
peripheral
parts.
No
Is input at Pin
(1) of IC402
as specified?
Check the
line in
question.
Yes
Check IC402
and its
peripheral
parts.
Yes
No
Are Pins (2)
and (4) of
IC402 at “H”
and “L”
respectively?
Are Pins (65)
and (66) of
IC2001 at “H”
and “L”
respectively?
No VIDEO
1 output
YES
No
Is input at Pin
(1) of IC402
as specified?
Check the
line in
question.
Yes
No
Are Pins (1)
and (4) of
IC402 both at
“L”?
No VIDEO
2 output
No
Is input at Pin
(74) of IC802
as specified?
Check J3404,
AV line and
their
peripheral
parts.
No S
VIDEO
output
No
Are inputs at
Pins (71) and
(72) of IC802
as specified?
Check
SC3301, SY
line, SC line
and
peripheral
parts.
Are Pins (65)
and (66) of
IC2001 both
at “L”?
Check IC402
and its
peripheral
parts.
Yes
Check the
line in
question.
Yes
Check the
line in
question.