White Balance Adjustment; Sub-Brightness Adjustment - Philips 14PV111/01 Service Manual

10. White Balance Adjustment

Purpose: To mix red, green and blue beams correctly
for pure white.
Symptom of Misadjustment: White becomes bluish
or reddish.
Test point Adj. Point
Screen-Control
Screen
P+/P- buttons
Tape M. EQ.
Pattern Generator
---
Color analyzer
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 [
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.
Mode Input
White Ras-
RF ter (APL
100%)
Spec.
See below
Figure
Color Ajalyzer
p] button on

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.
Test point
Screen
Tape
---
White
Fig. 6
Note: Bar (A) in Fig. 7 --- 0 IRE
1. Enter the Service Mode. (See page 1-6-9.)
Then input SYMPTE signal from RF input.
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. 7 is just visi-
ble.
3. Turn the power off and on again.
1-6-14
Adj. Point Mode
P+/P-
---
buttons
M. EQ.
Pattern
See below
Generator
Figure
A B C
Input
SYMPTE
Spec.
Black
This bar
(A) just
visible
Fig. 7
T6310EA