Hitachi CP-X980W Service Manual page 11

Adjustment procedure 1
(when a color differential meter is used)
1. First adjust [MIN] tone [G:].
Unless there is conspicuous black uniformity, there
is no need to adjust. (Go to step 10 if no adjustment
is required.)
2. Select adjustment point [No.2][G:].
When the background is [G] monochrome, press
the [MENU SELECT] key on the Remote control
transmitter to change to solid white.
3. Measure the color coordinates of adjustment point
[No.1] and make a note of them.
Assume that they are x = x1, y = y1.
Note : When the CL-100 color and color difference
meter is used, the [
convenient. When adjustment point [No.1]
color coordinate has been selected, set the
slide switch on the side to [
holding down the [F] button on the front panel.
The measurement shown after this displays
the deviation from measurement point 1.
4. N o w m e a s u r e t h e c o l o r c o o r d i n a t e s o f
measurement point [No.2]. If the y of the color
coordinates is more than 0.010, adjust [No.2] and
[G:] so that the color coordinates are as follows.
If y>y1+0.01,
y=y1+0.01 0.01
If y<y1-0.01,
y=y1-0.01 0.01
(Adjust y only)
5. Similarly, measure adjustment points [No.3] to
[No.9] and adjust their color coordinates starting in
order from the small number points.
6. Then measure the color coordinates for adjustment
point [No.10]. If the y of the color coordinates is
more than 0.020, adjust [No.10] and [G:] so that
the color coordinates are as follows.
If y>y1+0.02,
y=y1+0.02 0.01
If y<y1-0.02,
y=y1-0.02 0.01
7. Similarly, measure adjustment points [No.10] to
8. Then adjust [MIN] tone [R] and [B].
9. Similarly, measure adjustment points [No.3] to
](delta) mode is
](delta) while
10.Then adjust [MID] tone [G] so that the adjustment
11.Then adjust [MID] tone [R] and [B].
12.Measure the color coordinates of adjustment point
13.N o w m e a s u r e t h e c o l o r c o o r d i n a t e s o f
14.Similarly, measure adjustment points [No.3] to
15.Now make similar adjustments for [MAX] tone.
[No.17] and adjust their color coordinates starting in
order from the small number points.
Measure the color coordinates of measurement
point [No.2] and adjust [No.2][R:] and [B:] so that
the coordinates are as follows.
x = x1 0.005 , y = y1 0.010
[No.17] and adjust their color coordinates starting in
order from the small number points.
This completes adjustments required for [MIN].
Note : Since excessive correction may lead to a
correction data overview during internal
calculations, use the following values for
reference.
[No.2] to [No.5] 30 or less
[No.6] to [No.9] 40 or less
[No.10] to [No.13] 60 or less
data are same as [MIN] tone [G].
This completes [G] color adjustments.
Select [No.2] [B:] and press the [MENU SELECT]
key on the Remote control transmitter to change to
solid white.
[No.1] and make a note of them.
Assume that they are x = x1, y = y1.
measurement point [No.2] and adjust [No.2][R:]
and [B:] so that the coordinates are as follows.
x = x1 0.005 , y = y1 0.010
[No.17] and adjust their color coordinates starting in
order from the small number points.
This completes [MID] tone adjustments.
(Adjust [MAX] tone [G] so that the adjustment data
are same as [MIN] tone [G].)
CP-X980W
CP-X985W
11