25
5. Horizontal RASTER position adjustment
1) Adjustment V/R : V/R401
2) Adjustment position : center of screen
6. Check of coordinates value
1) Adjustment position : center of screen(measured as CA-100 in CRT face)
2) Measuring condition : After adjusting Back Roaster into 0.1 F/L by varying of screen
at Cross Hatch, measurement is made at max 70 F/L in Window pattern
X : 281
±
20
y : 311
±
20
Y : 55 F/L
(The difference of X, y value should be within MIN 15 , MAX 35. )
7. Other V/R Adjustment
1) Measuring condition : BS-120 CROSS HATCH PATTERN (31.5 Khz 640X480 MODE)
2) Measuring method : H-SIZE MIN
below 320
MAX
over 350
V-SIZE MIN
below 200
MAX over 250
H-POS over 20mm from center
V-POS over 20mm from center
8. HIGH VOLTAGE REGULATION CHECK.
1) Measuring terminal
: CRT ANODE
2) Measuring voltage
: 23.4 KV
±
300V
3) Measuring condition
: To measure the change of screen size at time of max
and min. in Contrast V/R under full white pattern
4) Screen change
: within 2.0 mm
KORTEK Corporation
KT-XX03NA
