Horizontal Raster Position Adjustment; Check Of Coordinates Value; Other V/R Adjustment; High Voltage Regulation Check - Kortek KTN-2001 Service Manual

KORTEK Corporation

5. Horizontal Raster position adjustment

1) Adjusting V/R: no adjustment
2) Adjusting position: center of screen

6. Check of coordinates value

1) Adjusting position: center of screen (measured as CA-100 in CRT face)
2) Measuring condition: After adjusting Back Raster into 0.1F/L by varying of
screen at Cross Hatch, measurement is made at max 70F/L in Window pattern
X: 281±20
y: 311±20
Y: 60F/L
At this time, please confirm 30 F/L (40F/L) at Full White

7. Other V/R Adjustment

1) Measuring condition: BS-120 cross hatch pattern (31.5 KHz 640*480 mode)
2) Measuring method: H-size

8. High voltage regulation check

1) Measuring terminal: CRT anode
2) Measuring voltage: 24KV±300V
3) Measuring condition: To adjust size varying status of screen at time of maximum
4) Screen change: within 2.0mm
KTN-2001/1401
Min
Max
V-size Min
Max
H-posi. over 20mm from center
V-posi. over 10mm from center
and minimum in Contrast V/R under Full White Pattern
below 360mm (250mm)
over scan
below 190mm (118mm)
over scan
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