Hitachi 28LD5200E Service Manual page 17

Item COLOR TEMPERATURE ADJUSTMENT -VIDEO
(1) Set CRT COLOR ANALYZER(CA-210) at the
center of the screen panel.
(2) Input the full-white raster signal to AV1
component terminal and select AV1.
Signal condition
480i component
Video level: 0.56Vp-p
Sync level: 0.286Vp-p
Setup level: 0V
(3)
Set the diaplay size to "Full".
Set the Contrast mode of picture menu "Auto".
Set the Picture mode of Picture menu "Dynamic".
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28LD5200E (PW1L)
Preparation Procedure
[Adjustment of Cool mode]
(1)
Enter the service adjustment mode, and confirm that
Adjustment NO 0,1 are set as 230. NO2 is set as 255.
If initial x and y value are larger than specification,
No.0:R drive(cool) will be adjusted(decrease from 230)
No.1:G drive(cool) will be adjusted(decrease from 230)
No.2:B drive(cool) is set as 255
(2)
If initial x or y value is smaller than specification.
No2:B drive(cool) will be adjusted(decrease from 255),
until one of x,y is in spec and another value is higher than spec.
(* When both x and y are in spec value, it is end of adjustment )
(3)
According to a x and y value, the following adjustment of (3)-1 or (3)-2.
(3)-1 If x value is higher than spec.
No.0:R drive(cool) will be adjusted(decrease from 230)
(3)-2 If y value is 6higher than spec,
No1:G drive(cool) will be adjusted(decrease from 230)
* No.0:R or No.1:Fshould be set as 230
<Specification>
Color Temperature (Cool) for Video
25000K-6MCD x=0.257 0.005
[Adjustment of Normal mode]
No Adjustment. (11000K)
Adjustment No.3,4 and 5 are set as 230.
[Adjustment of Warm mode]
(4)
Enter the service adjustment mode, and confirm that Adjustment NO.6,7
and 8 are all set as 230.
In factory setting mode
No.8:B drive(warm) will be adjusted(decrease from 230),
until one of x,y is in spec and another value is higher than spec.
(* When both x and y are in spec value, it is end of adjustment )
(5)
According to x and y value, the following adjustment of (5)-1 or (5)-2.
(5)-1 If x value is higher than spec.
No.6:R drive(warm) will be adjusted(decrease from 230)
(5)-2 If y value is higher than spec,
No7:G drive(warm) will be adjusted(decrease from 230)
No.6 or No.7:Fshould be set as 230.
<Specification>
Color Temperature (Warm) for Video
7500K x=0.302 0.005
[Adjustment of Black / White mode]
(6)
Enter the service adjustment mode, and confirm Adjustment NO.9,10
and 11 are all set as 230.
In factory setting mode
No.11:B drive(B/W) will be adjusted(decrease from 230),
until one of x,y is in spec and another value is higher than spec.
(* When both x and y are in spec value, it is end of adjustment.)
(7) According to x and y value, the following adjustment of (7)-1 or (7)-2.
(7)-1 If x value is higher than spec.
No.9:R drive(B/W) will be adjusted(decrease from 230)
(7)-2 If y value is higher than spec,
No.10:G drive(B/W) will be adjusted(decrease from 230)
No.9 or No.10:should be set as 230.
<Specification>
Color Temperature (B/W) for Video
5400K x=0.335 0.005
17
y=0.256 0.005
y=0.317 0.005
y=0.343 0.005