GENERAL INFORMATION
All adjustments are thoroughly checked and corrected when
the monitor leaves the factory. Therefore, the monitor
should operate normally and produce proper color and
pictures upon installation.
However, several minor adjustments may be required,
depending on the particular location in which the monitor is
operated.
Carefully draw out the monitor from the carton and remove
all packing materials. Check and adjust all the customer
controls such as Brightness and Contrast to obtain a normal
picture.
Alignment appliances and tools.
- IBM compatible PC & Monitor.
- Programmable Signal Generator (eg. VG-819 made
by Astrodesign Co.)
- E(E)PROM with saved each mode data.
- Oscilloscope with probe.
- Alignment cable with adaptor.
- Digital Voltmeter.
- Software (Alignment program for this monitor).
- White Balance Meter.
- Luminance Meter.
AUTOMATIC DEGAUSSING / MANUAL DEGAUSSING
The degaussing coil is mounted around the CRT so that
external degaussing is normally unnecessary after turn on
the monitor. The monitor should be degaussing properly
upon installation.
If the monitor is moved or faced in a different direction, or
the chassis or parts of the cabinet become magnetized to
cause poor color purity, press (DEGAUSSING) on the
OSD menu.
ADJUSTMENT PROCEDURE & METHOD
Install the cable for adjustment such as figure 1 and run
the alignment program on the DOS for the IBM compatible
PC.
1. Adjustment for the B
+
Voltage
Display cross hatch pattern at Mode 7.
Adjust D914 cathode voltage to 175
0.2V with
VR901.
2. Adjustment for the HIGH-VOLTAGE
Display cross hatch pattern at Mode 7.
Adjust D713 cathode voltage to 41
0.5V with
VR701.
3. Adjustment for the Horizontal Raster Center
Display cross hatch pattern at Mode 7.
Adjust the raster should be center of the screen with
SW701.
4. Adjustment for the Screen Image
Display cross hatch pattern at Mode 1.
Adjust H-SIZE as arrow keys to 300
2mm.
Adjust H-POSITION as arrow keys to center of the
screen.
Adjust V-SIZE as arrow keys to 225
2mm.
Adjust V-POSITION as arrow keys to center of the
screen.
Adjust S-PCC (Side-Pincushion) as arrow keys to
be the best condition.
Adjust TRAPEZOID as arrow keys to be the best
condition.
Display from Mode 2 to Mode 7 and repeat the
adjustments from no.
to no.
as stated above.
5. Adjustment for the White Balance and Luminance.
Set the White Balance Meter.
Press the (DEGAUSSING) on the OSD menu for
demagnetized CRT.
Display color 0,0 pattern at Mode 7.
Set Brightness and VR501 (Sub-Bright) volume to
max position.
Set Contrast to max and Sub-Contrast to center
position.
Set VR301 R-Bias) and VR302 (G-Bias) to min
position.
Adjust Screen control on the FBT to 0.1FL of the
raster luminance.
Adjust VR301 (R-Bias) and VR302 (G-Bias) to white
balance x=0.281
0.015 and y=0.311
0.015.
Adjust VR501 (Sud-Bright) to 0.3
0.1FL of the
raster luminance.
Display color 15,0 box pattern (70
70mm) at Mode 7.
Adjust R-DRIVE 1, G-DRIVE 1, and B-DRIVE 1 to
white balance x=0.281
0.003 and y=0.311
0.003
with arrow keys.
Save in the COLOR 1.
Adjust SUB-CONTRAST 1 to 55
1FL of the box
pattern luminance.
Adjust R-DRIVE 2, G-DRIVE 2, and B-DRIVE 2 to
white balance x=0.297
0.003 and y=0.320
0.003
with arrow keys.
Save in COLOR 2.
- 15 -
ADJUSTMENT
