Samsung CKA4217L, Service Manual

Page: 21 / 64

5-2-3 Trapezoid Adjustment
CONDITIONS
Scanning frequency: 53.7 kHz/85 Hz (15”)
43.8 kHz/85 Hz (14”)
Display image: Crosshatch pattern
Make the the test pattern rectangular.
Figure 5-2. Trapezoid
5-2-4 Parallelogram Adjustment
CONDITIONS
Scanning frequency: 53.7 kHz/85 Hz (15”)
43.8 kHz/85 Hz (14”)
Display image: Crosshatch pattern
To activate the Parallelogram Adjustment
function, push both the Horizontal Position and
Vertical Position buttons and hold them in for
longer than 3 seconds, or until the power indicator
LED changes from green to blink and back to
green.
Use the Increase (+) and Decrease (–) buttons to
correct the display shape.
Figure 5-3. Parallelogram
5-2-5 Side Pincushion Adjustment
CONDITIONS
Scanning frequency: 53.7 kHz/85 Hz (15”)
43.8 kHz/85 Hz (14”)
Display image: Crosshatch pattern
After pushing the Side Pincushion button once,
push the Increase (+) and Decrease (–) buttons to
straighten the sides of the test pattern.
5-2-6 CRT Tilt Adjustment
TILT ADJUSTMENT (CKA5227L With Tilt)
Push the V-Posi and H-Size simultaneously until
Led blinks and back on again. Push the Increase
(+) and Decrease )–) buttons to correct the Tilt.
5-2-7 Vertical Linearity Adjustment
To activate the vertical linearity adjustment, push
both the horizontal position and horizontal size
buttons and hold then in for longer than 3
seconds, or until the power indicator LED changes
from green to blink and back to green.
Use the Increase (+) and Decrease (–) buttons to
correct the display shape.
5 Alignment and Adjustments
CKA42*7L/5227L 5-5
2.5 mm
| A - B | < 4 mm
A
B
A
B
| C1 |, | C2 |
≤
1.5 mm, | D1 |, | D2 |
≤
1.5 mm.
Figure 5-4. Pincushion
C2
C1
D1 D2
A B
C
D
FRONT BEZEL
BACK RASTER
Figure 5-5. CRT Tilt Adjustment