Adjustment - LG Flatron T710P Service Manual

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
DEGAUSS 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(VR901).
1) Display cross hatch pattern at Mode 4.
2) Check C999 (+) voltage to 50± 0.5Vdc.
2. Adjustment for High-Voltage.
1) Display cross hatch pattern at Mode 4.
2) DIST.ADJ→CTRL PWM → High Voltage Command.
3) Adjust High Voltage to 25.5kV
4) Press Enter Key.
3. Adjustment for High-Voltage Regulation offset
Voltage(VR701).
1) Display cross hatch pattern at Mode 4.
2) Check C810(+) voltage 4.6V
4. Adjustment for Factory Mode (Preset Mode).
1) Display cross hatch pattern at Mode 4.
2) Run alignment program for T710PG on the IBM
compatible PC.

ADJUSTMENT

± 0.1 kVdc.
± 0.1Vdc.
- 12 -
3) EEPROM → ALL CLEAR → Y(Yes) command.
<Caution> Do not run this procedure unless the
EEPROM is changed. All data in EEPROM (mode
data and color data) will be erased.
4) Power button of the monitor turn off → turn on.
5) COMMAND→PRESET START→Y(Yes) command.
6) DIST. ADJ. → CTRL PWM → TILT command.
7) Adjust tilt as arrow keys to be the best condition.
8) DIST. ADJ. → BALANCE command.
9) Adjust parallelogram as arrow keys to be the best
condition.
10) Adjust balance of pin-balance as arrow keys to be
the best condition.
11) Display cross hatch pattern at Mode 1~4.
12) DIST. ADJ. → FOS. ADJ command.
13) Adjust V-SIZE as arrow keys to 230
14) Adjust V-POSITION as arrow keys to center of the
screen.
15) Adjust H-SIZE as arrow keys to 310
16) Adjust H-POSITION as arrow keys to center of the
screen.
17) Adjust S-PCC (Side-Pincushion) as arrow keys to be
the best condition.
18) Adjust TRAPEZOID as arrow keys to be the best
condition.
19) Save of the Mode 1~4.
20) Save of the System
21) PRESET EXIT → Y (Yes) command.
5. Adjustment for White Balance and Luminance.
1) Set the White Balance Meter.
2) Press the DEGAUSS on the OSD menu for
demagnetization of the CDT.
3) COLOR ADJ. → LUMINANCE command of the
alignment program.
4) Set Brightness and Contrast to Max position.
5) Display color 0,0 pattern at Mode 4.
6) COLOR ADJ.→ BIAS ADJ.→ COLOR No. → 1
command of the alignment program.
7) Check whether green color or not at R-BIAS and G-
BIAS to min position and B-BIAS to 127(7F) and
Sub-Brightness to 161(A1)[Normal CDT:127(7F)]
position. Adjust G2 (screen) command to
±0.05FL [Normal CDT: 0.1± 0.05FL]of the
0.2
raster luminance.
8) Adjust R-BIAS and G-BIAS command to x=0.283
0.005 and y=0.298
Meter with PC arrow keys.
± 2mm.
± 2mm.
± 0.005 on the White Balance
±