1-6-15
T6450EA
10. White Balance Adjustment
Purpose:
To mix red, green and blue beams correctly
for pure white.
Symptom of Misadjustment:
White becomes bluish
or reddish.
Note:
Use remote control unit
1. Operate the unit more than 20 minutes.
2. Face the unit to east. Degauss the CRT using De-
gaussing Coil.
3. Input the White Raster (APL 100%).
4. Set the color analyzer to the CHROMA mode and
after zero point calibration, bring the optical recep-
tor to the center on the tube surface (CRT).
5. Enter the Service mode. Press [
-] button on the
remote control.
6. Press [4] button on the remote control unit for Red
adjustment. Press [5] button on the remote control
unit for Blue adjustment.
7. In each color mode, Press [P+/P-] buttons to adjust
the values of color.
8. Adjusting Red and Blue color so that the tempera-
ture becomes 8500K (x : 290 / y : 300) ±3%.
9. At this time, Re-check that Horizontal line is white.
If not, Re-adjust Cut-off Adjustment until the Hori-
zontal Line becomes pure white.
10. Turn off and on again to return to normal mode. Re-
ceive APL 100% white signal and Check Chroma
temperatures become 8500K (x : 290 / y : 300) ±3%.
Note:
Confirm that Cut Off Adj. is correct after this
adjustment, and attempt Cut Off Adj. if needed.
11. Sub-Brightness Adjustment
Purpose:
To get proper brightness.
Symptom of Misadjustment:
If Sub-Brightness is
incorrect, proper brightness cannot be obtained by
adjusting the Brightness Control.
Note:
Bar (A) in Fig. 7 --- 0 IRE
1. Enter the Service Mode. (See page 1-6-10.)
Then input SYMPTE signal from RF (or Ext.) input
and leave it for at least 20 minutes.
2. Press MENU button. (Each time MENU button is
pressed, display will change BRT, CNT, COL, TNT,
and SHP in that order.) Select BRT and press [P+/
P-] buttons so that the bar (A) in Fig. 6 is just visi-
ble.
3. Turn the power off and on again.
Test point
Adj. Point
Mode
Input
Screen
Screen-Control,
P+/P-
buttons
RF
(or Ext.)
White
Raster
(APL 100%)
Tape
M. EQ.
Spec.
---
Pattern Generator,
Color analyzer
See below
Figure
Color Ajalyzer
Fig. 5
Test point
Adj. Point
Mode
Input
Screen
P+/P-
buttons
RF
(or Ext.)
SYMPTE
Tape
M. EQ.
Spec.
---
Pattern
Generator
See below
Figure
Black
White
This bar
(A) just
visible
A B C
Fig. 6
