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ADJUSTMENT
GENERAL INFORMATION
All adjustment are thoroughly checked and corrected Adjust H-position as center of the screen.
when the monitor leaves the factory, but sometimes Adjust V-size as 190 1mm.
several minor adjustment may be required. Adjust V-position as center of the screen.
Adjustment should be following procedure and after Adjust side-pincushion (east-west), trapezoid distortion,
warming up for a minimum of 30 minutes. and tilt should be the best condition.
3. Adjustment for the White Balance and Luminance as
Alignment appliances and tools follows:
- IBM compatible PC & Monitor. Set the White Balance Meter.
- Programmable Signal Generator (eg. VG-819 made Press the button for demagnetized CRT of the
by Astrodesign Co.) monitor.
- E(E)PROM with saved each mode data. Display color 0,0 pattern at Mode 6.
- Oscilloscope with probe Set Brightness and VR802 (Sub-Bright) volume to
- Alignment cable with adaptor Max position.
- Digital Voltmeter Set Contrast to Max and Sub-Contrast to center
- Software (Alignment program for this monitor) position.
- White Balance Meter Set VR301 (R-Bias) and VR302 (G-Bias) to Min
- Luminance Meter position.
Adjust Screen control of the FBT to 0.1FL of the raster
AUTOMATIC AND M ANUAL DEGAUSSING
luminance.
The degaussing coil is mounted around the CRT so that
external degaussing is normally unnecessary after turn Adjust VR301 (R-Bias) and VR302 (G-Bias) to
on the monitor. But the monitor is moved or faced in a x=0.281 0.015 and y=0.311 0.015.
different direction, become poor color purity cause of CRT Adjust VR802 (Sub-Bright) to 0.3 0.1FL of the
magnetized, then press (DEGAUSSING) button to raster luminance.
remove color purity problem. Display color 15,0 box pattern (70x70mm) at Mode 6.
Adjust R-DRIVE 1, G-DRIVE 1, and B-DRIVE 1 to
B+ ADJUSTMENT
x=0.281 0.003 and y=0.311 0.003 with arrow keys.
1. Display cross hatch pattern at Mode 2. Save in the COLOR 1 .
2. Adjust D955 cathode voltage to 50 0.2V with VR951. Adjust SUB-CONTRAST 1 to 60 1FL of the box
pattern luminance.
HIGH VOLTAGE ADJUSTMENT Adjust R-DRIVE 2, G-DRIVE 2, and B-DRIVE 2 to
1. Display cross hatch pattern at Mode 2. x=0.297 0.003 and y=0.320 0.003 with arrow keys.
2. Adjust D713 cathode voltage to 42.5 0.2V with VR501. Save in the COLOR 2 .
Adjust SUB-CONTRAST 2 to 60 1FL of the box
RASTER CENTER ADJUSTMENT. pattern luminance
1. Display cross hatch pattern at Mode 6. Display color 15,0 full white pattern at Mode 6.
2. Set the Brightness to Max position that the back raster Adjust ABL to 30 1FL of the luminance.
should be visible. Exit from the program.
3. Select the H-center switch (SW701) to the raster should
be center of the screen.
FOCUS ADJUSTMENT.
IMAGE OF SCREEN AND WHITE BALANCE ADJUSTMENT 1. Set the Brightness and Contrast to Max position.
1. Install the cable for adjustment such as figure 1. 2. Display H character in full screen at Mode 6.
2. Run the software delivered from LG Electronics Inc. for 3. Adjust Focus control on the FBT that the focus should be
the special adjustment. the best condition.
Display cross hatch pattern from Mode 1 to Mode 6.
Adjust H-size as 260 1mm.
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Monitor to be
Adjustment
Parallel Port
A
C
11
15
IBM
5 10
6
1
Compatible PC
Video
13 1
Signal Generator 25 14
Control Line
A
Adapter C 5V
4.7K
15
11
5V 4.7K
10
6
74LS06
5
4.7K 4.7K
B
1
74LS06
B
FIGURE 1, CABLE CONNECTION
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