White balance adjustment | Hitachi 50SBX78B, 60SBX78B instruction

Notes: (1)	Fixing screw	(2)	Color aberration
FIXING	SCREW	COLOR	ABERRATION

CROSS-HATCH

(3)Since the G light is very important for picture

quality and performance, pay special attention in its adjustment.

Note: Be careful not to touch the lens with your fingers when adjusting.

(4)For red, setting to the center between red and crimson is optimum.

(5)For blue, setting to the center between purple and green is optimum.

2.2White balance adjustment

(1)Screen adjustment

(2)High brightness white balance.

(3)Low brightness balance.

Adjustment preparation

(1)Start adjustment 20 minutes or more after the power is turned on.

(2)The vertical incident illumination on the screen should be 20 lux or less.

(3)Set the video settings (CONTRAST: MAX,

others: center) to standard condition

(4)For low brightness white balance adjustment, input a white raster signal level of 0.145 Vp-p (Video input level).

(5)For high brightness white balance adjustment, input a white raster signal level of 0.715Vp-p (Video input level).

(6)Set the drive adjustment VRs (red and green) to 12 - 2 o’clock position.

(7)Turn the screen adjustment VRs (red, green and blue) fully counterclockwise.

(8)Set video advanced setting white control to COOL position.

Adjustment procedure

(1) Go to VIDEO CHROMA ADJUST mode by pressing INPUT and Power button on Control Panel at the same time.

(2)In “SERVICE” mode push b button and screen

turns to black. Gradually turn the screen adjustment VRs (red, green, blue) clockwise and set them where the red, green and blue slightly bright lines just appear evenly on the screen.

(3)Push the b button again to return to “Normal” side.

(4)Press “MENU” button to exit VIDEO CHROMA ADJUST.

(5)Select the input signal for high brightness (Video level = 0.715Vpp).

(6)Adjust the high brightness white balance using the drive adjustment VRs (red, green).

(7)Select the signal for low brightness (Video level = 0.145Vpp)

(8)Adjust the low brightness white balance using

the screen adjustment VRs (red, green, blue). (Visually adjust).

(9)Check that high brightness white balance is obtained. If it does not, return to step (7).

NOTE: Before adjusting the White Balance, check that

the screen adjustment VRs are turned fully

counterclockwise. Since the phosphorescent surface of the CRT is likely to be burned, be careful.

White	balance	=	9300”	K f OMPCD
Color	coordinate	=	x	0.285
			Y	0.295

2.3Sub brightness adjustment

Adjustment preparation

(1)Start adjustment 20 minutes or more after the power is turned ON. Receive the color bar signal.

(2)Set the contrast and color controls to minimum.

(3)The vertical incident illumination on the screen should be 20 Iux or less.

black

Adjustment procedure

(1)Go to “Sub Brightness” adjustment in VIDEO

CHROMA ADJUST mode (press Input and Power button on Control panel at same time), using A v buttons and then b button.

(2)Then adjust “Sub Brightness” using 4 b buttons to increase or decrease the value, according to figure. (Visually adjust).

(3)After adjustment, press MENU button to exit

VIDEO CHROMA ADJUST mode. (Data is stored in memory).

Note: When selecting SUB-BRIGHTNESS mode the

mcon sets the CONTRAST and COLOR to MIN.

automatically, but make sure that the other

conditions are center. Directly observe the screen by eye without using a mirror.

60SBX78B, 50SBX78B specifications

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