4-2-2 (b) VERTICAL LINEARITY ADJUSTMENT
CONDITIONS
Scanning frequency:
91 kHz/85 Hz
Display image:
Crosshatch pattern
Brightness:
Cut-off
Contrast:
Maximum
To adjust the Vertical Linearity, refer to Tables 4-1
and 4-2 for the tolerance range.
Click on the << or >> box next to
V_LIN
to
optimize the image.
4-2-3 Trapezoid Adjustment
CONDITIONS
Scanning frequency:
91 kHz/85 Hz
Display image:
Crosshatch pattern
Brightness:
Cut-off
Contrast:
Maximum
Click on the << or >> box next to
TRAP
to make
the image area rectangular.
Figure 4-4. Trapezoid
4-2-4 Pinbalance Adjustment
CONDITIONS
Scanning frequency:
91 kHz/85 Hz
Display image:
Crosshatch pattern
Brightness:
Cut-off
Contrast:
Maximum
Click on the << or >> box next to
PIN_BAL
to
optimize the image.
4-2-5 Parallelogram Adjustment
CONDITIONS
Scanning Frequency:
91 kHz/85 Hz
Display image:
Crosshatch pattern
Brightness:
Cut-off
Contrast:
Maximum
Click on the << or >> box next to
PARALLEL
to
make the image
area
rectangular.
Figure 4-6. Parallelogram
4-2-6 Side Pincushion Adjustment
CONDITIONS
Scanning frequency:
91 kHz/85 Hz
Display image:
Crosshatch pattern
Brightness:
Cut-off
Contrast:
Maximum
Click on the << or >> box next to
BARREL
to
straighten the sides of the image area.
4-2-7 Tilt Adjustment
CONDITIONS
Scanning Frequency:
91 kHz/85 Hz
Display image:
Crosshatch pattern
Brightness:
Cut-off
Contrast:
Maximum
Click on the << or >> box next to
ROTATE
to
correct the tilt of the display.
4-2-8 Degauss
No adjustments are available for the degaussing
circuit. The degaussing circuit can effectively
function only once per 30 minutes.
4-2-9 To Delete the User Mode Data
To delete the adjustment data from the user
modes,
p
ress the
EXIT
Button
for
1
5 seconds.
4-2-10 Save the Data
To save the adjustment data for a mode, press
FACTORY SAVE.
4 Alignment and Adjustments
4-4
720C/920C
| C1 |, | C2 |
≤
2.0 mm, | D1 |, | D2 |
≤
2.0 mm.
Figure 4-7. Pincushion
A
5 mm
B
A
B
| D1 |, | D2 |
≤
2.0 mm
Figure 4-5. Pinbalance
D1
D2
D1
C2
D2
D1
C1
| A - B | < 5 mm
Summary of Contents for 720C
Page 33: ...720C 920C 6 1 6 1 720C Exploded View and Parts List ...
Page 34: ...720C 920C 6 2 6 2 920C Exploded View and Parts Lists ...
Page 80: ...R299 720C 920C 10 2 10 2 MICOM Parts Schematic Diagram ...
Page 81: ...720C 920C 10 3 10 3 Horizontal Vertical Processor Parts Schematic Diagram R265 C272 R262 ...
Page 83: ...R561 R562 R501 C530 L521 R523 R526 720C 920C 10 5 10 5 High Voltage Parts Schematic Diagram ...
Page 84: ...720C 10 6 1 10 6 1 720C Video Parts Schematic Diagram ...
