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1. Preparation for Service Adjustment
GENERAL INFORMATION
All adjustment are thoroughly checked and corrected
when the monitor leaves the factory, but sometimes
several adjustments may be required.
Adjustment should be following procedure and after
warming up for a minimum of 30 minutes.
• Alignment appliances and tools.
- IBM compatible PC.
- Programmable Signal Generator.
(eg. VG-819 made by Astrodesign Co.)
- EPROM or EEPROM with saved each mode data.
- Alignment Adaptor and Software.
- Digital Voltmeter.
- White Balance Meter.
- Luminance Meter.
- High-voltage Meter.
AUTOMATIC AND MANUAL DEGAUSSING
The degaussing coil is mounted around the CDT so that
automatic degaussing when turn on the monitor. But a
monitor is moved or faced in a different direction, become
poor color purity cause of CDT magnetized, then press
DEGAUSSING on the OSD menu.
ADJUSTMENT PROCEDURE & METHOD
- Install the cable for adjustment such as Figure 1and run
the alignment program on the DOS for IBM
compatible PC.
- Set external Brightness and Contrast volume to max
position.
1. Adjustment for B
+
Voltage.
1) Display cross hatch pattern at Mode 4.
2) Check D961 cathode voltage within 50V ± 1V .
2. Adjustment for High-Voltage.
1) Display cross hatch pattern at Mode 4.
2) Enter the SVC SUB menu as the following instruction.
3) Adjust H/Voltage to 25.8kV0.1 kV by adjust 1-P value.
2. Adjustment by Service Hot key
How to enter SVC HOT KEY
1. Press Menu and OSD window will appear.
2. While OSD window is displayed,
is seen on the
left bottom of OSD window.
3. Press + power switch simultaneously and the
screen will immediately refresh.
4. Press Menu and make sure that is changed to
1 2.
5. Follow the menu on the left of OSD window to find 12
and OSD will change as shown in the figure.
6. Select Degauss in the above figure and then press
Select and
to enter the screen of the SUB menu.
(Back Raster for Pattern)
FOS SPEC
1. Size
H : 310
4mm
V : 230
4mm
Scanning frequency : All Mode (Mode 1~4)
Display image : Cross hatch pattern
2. Centering
Scanning frequency : All Mode (Mode 1~4)
Display image : Crosshatch pattern
Horizontal : 10 Row
Vertical : 8 Row
H :
L-R 4mm, V : U-D 4mm
3. Tilt
Scanning frequency : All Mode (Mode 1~4)
Display image : Crosshatch pattern
Horizontal : 10 Row
Vertical : 8 Row
Tilt :
E-F 2.0mm
- 13 -
ADJUSTMENT
U
D
L
R
EF