GENERAL INFORMATION
All adjustment are thoroughly checked and corrected
when the monitor leaves the factory, but sometimes
several minor adjustment 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.)
- E(E)PROM with each mode data saved.
- 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 CRT so that
automatic degaussing when turn on the monitor. But
the monitor is moved or faced in a different direction,
become poor color purity cause of CRT magnetized, then
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 IBM compatible PC.
1. Adjustment for B
+
Voltage
Display cross hatch pattern at Mode 6.
Adjust D909 cathode voltage to 185V
VR901
.
0.2V with
2. Adjustment for High-Voltage
Display cross hatch pattern at Mode 6.
Adjust FBT Anode voltage to 25kV
0.1kV with
VR702
.
3. Adjustment for Horizontal Raster Center
Display cross hatch pattern at Mode 6.
Adjust the raster should be center of the screen with
SW701.
4. Adjustment for Screen Image
Display cross hatch pattern at Mode 1.
Run alignment program for StudioWorks 57i or
CS590 on the IBM compatible PC.
COMMAND
START
DIST. ADJ
FOS. ADJ
Adjust H-SIZE as arrow keys to 260
Adjust H-POSITION as arrow keys to center of the
screen.
Adjust V-SIZE as arrow keys to 190
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.
Adjust TILT as arrow keys to be the best condition.
Display from Mode 2 to Mode 6 and repeat above
adjustment.
PRESET EXIT
Y(Yes) command.
Y(Yes) command.
Mode No.
1 command.
1mm.
1mm.
5. Adjustment for White Balance and Luminance.
Set the White Balance Meter.
Press the (DEGAUSSING) on the OSD menu for
demagnetization of the CRT.
Display color 0,0 pattern at Mode 6.
COLOR ADJ.
LUMINANCE command of the
alignment program.
Set Brightness to max position.
Set Contrast to max position.
COLOR ADJ.
COLOR NO.
command of the alignment program.
Set Sub-Contrast to center position.
Set VR302 G-Bias) to center, VR301 (R-Bias) and
VR303 (B-Bias) to min position.
Adjust Screen control on the FBT to 0.3
the raster luminance.
Adjust VR301 (R-Bias) and VR303 (B-Bias) to white
balance x=0.281
0.015 and y=0.311
Display color 15,0 box pattern (70
Set B-DRIVE to 140 (decimal) at DRIVE of the
alignment program.
Adjust R-DRIVE 1 and G-DRIVE 1 to white balance
x=0.281
0.003 and y=0.311
keys.
1
SUB CONTRAST
0.05FL of
0.015.
70mm) at Mode6.
0.003 with arrow
- 15 -
ADJUSTMENT