Kortek KT-2914F Service Manual page 17

4. Select B-G with UP,DOWN adjust y=0.329 and do the next
selection with EXIT key.
6. Select R-G with UP,DOWN adjust x=0.313 and do the next
selection with EXIT key.
4-3-4 brightness uniformity adjustment
¡Ø set condition
- frequency : 640 * 480 (60Hz)
- display pattern : 9 ball pattern
- brightness : MIN (cut off)
- contrast : MAX
Measure nine brightness display in the screen.
4-3-5 Focus adjustment
¡Ø set condition
- frequency : 640 * 480 (60Hz)
- display pattern : "H" character
- brightness : min (cut off)
- contrast : max
1. Adjust in focus of whole screen to be the best fitted with
FOCUS V/R in FBT.
4-3-6 PURITY adjustment
Purity is that unnecessary colors appear in the screen except
displayed color. Don't appear unnecessary colors divided with
the naked eye at a distance of 50§¯ from CRT surface.
front cabinet