Comb Filter Operation Check; Color Temperature Check; Black Enhancement; Edge Enhancement - Hitachi 46F510 Service Manual

1.2 Comb filter operation check

Adjustment preparation
(1) Receive the color bar signal at the regular tuning
point.
(2) Set the CONTRAST control to MAX and the other
controls to center.
Adjustment procedure
(1) Check that between the color bars there are line dots
every second color bar as shown in the drawing.
A
Check A and line dots.
B
3D Y/C
A None
B None
1.3 Video Settings (Advanced Settings)
1.3.1 Color Temperature
(1) Receive the Circle pattern signal.
(2) Set Color Temperature using
change mode using
select button.
(3) Change Color Temperature from
High/Medium/Standard/Black and White.

1.3.2 Black Enhancement

(1) Receive the color bar signal.
(2) Select video mode by using
(3) Press CURSOR
CURSOR
then press
(4) Select Black Enhancement using
and set it to High/Medium/Low/Off.
(5) When the mode is High, check that the black level
sinks at the black position of picture.

1.3.3 Edge Enhancement

(1) Receive the circle pattern signal.
(2) Adjust Edge Enhancement using
from High/Medium/Low/Off.
(3) When set to High, check that definition level is up at
edge of vertical line of the circle pattern.
BACK TO ADJUSTMENTS
A A
B
Dots
CURSOR
,
CURSOR
, and then press
CURSOR
, .
, to select Black Enhancement
.
CURSOR
CURSOR
1.3.4 Color Management Check
(1) Receive color bar signal.
(2) Select Color Management using
then press SELECT button to display next menu.
(3) Select Set User Colors using
then press select button to add check-mark.
(4) Select one of the titles of color and then press
SELECT button.
changed by pressing
: Gets thinner
1.3.5 Color Decoding Check
(1) Receive color bar signal.
(2) Select Color Decoding using
then press SELECT button.
(3) Select one of the radio buttons of decode mode.
The picture changes as follows:
RGB: Normal picture
R: Red color only
G: Green color only
B: Blue color only
(4) Select Red, Green, Blue or Tint using
, . Use

1.3.6 Auto Color

(1) Set the color control to MAX.
(2) Select Auto Color using
press SELECT button.
CURSOR
(3) Use
(4) When it is on, check that the red part of the color
signal grows deeper.
1.3.7 Noise Reduction
and
(1) Select Noise Reduction using
then press SELECT button.
(2) When it is on, check that the noise on the picture is
reduced.
1.3.8 Auto Movie Mode
(1) Receive 480i signal.
(2) Select Auto Movie Mode using
then press SELECT button.
(3) When it is on, check that the scan becomes smooth.
,
,
45
CURSOR
CURSOR
Check that selected color is
CURSOR , .
: Gets denser
CURSOR
CURSOR , to adjust.
CURSOR
, to change Auto Color to On/Off.
CURSOR
CURSOR
DP33KA/B
, and
, and
, and
CURSOR
, and then
, and
, and