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MD 1772LB (B1770NSL/T)
MEDION
4-b.
Adjust VR 402 to Y=29.5FL ± 1FL.
4-c.
Check the white balance at 5FL and 28FL.
4-d.
Repeat all the procedures in 5-2-2 section until the best white balance is obtained
5-2-3 Focus Adjustment
CONDITION
Display image : “e” character pattern
PROCEDURE
1. Set Brightness to cutoff and Contrast to maximum.
2. Adjust top VR at T402 (static focus VR) to make vertical line clear.
3. Adjust center VR at T402 (dynamic focus VR) to make horizontal line clear.
4. Repeat above procedures to get best focus.
5-2-4 Dynamic focus Adjustments
1. Horizontal dynamic focus set Hf=300V in phase (compare with Vcp signal).
2. Vertical dynamic focus set Vf=160V in phase.
5-2-5 Static Convergence Adjustments
Static convergence involves alignment of the red, blue and green lines in the center area of the display.
Note :
The monitor requires 30 minutes warm-up time for convergence adjustment.
CONDITION
Display image : Crosshatch pattern
Warm-up Time : 30 minutes
PROCEDURE
1. Set Brightness and Contrast to display a well-defined pattern.
2. Ensure the convergence magnet rings are correctly positioned on the CRT.
