General Information - ETC EVF720FG739C 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.or equivalent)
- 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 in order
for 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.
1. Adjustment for B + Voltage.
1) Display cross hatch pattern at Mode 8.
2) Adjust C913 ( + ) voltage to 190
2. Adjustment for High-Voltage.
1) Display cross hatch pattern at Mode 8.
2) Adjust CDT Anode voltage to 26
VR701.
3. Adjustment for Horizontal Raster Center.
1) Display cross hatch pattern at Mode 8.
2) Adjust the raster should be center of the screen with
SW701.
ADJUSTMENT
± 0.2V with VR901.
± 0.2kV with
- 16 -
4. Adjustment for Factory Mode (Preset Mode).
1) Display cross hatch pattern at Mode 1.
2) Run alignment program for EVF720 on the IBM
compatible PC.
3) EEPROM → ALL CLEAR → Y(Yes) command.
4) DIST. ADJ.
5) COMMAND →PRESET START→Y(Yes) command.
6) Adjust tilt as arrow keys to be the best condition.
7) DIST. ADJ. → BALANCE command.
8) Adjust balance of pin balance, key balance, Top
corner correction and Bottom corner correction as
arrow keys to be the best condition.
9) DIST. ADJ. → FOS. ADJ command.
10) Adjust H-SIZE as arrow keys to 310
11) Adjust H-POSITION as arrow keys to center of the
screen.
12) Adjust V-SIZE as arrow keys to 230
13) Adjust V-POSITION as arrow keys to center of the
screen.
14) Adjust S-PCC (Side-Pincushion) as arrow keys to
be the best condition.
15) Adjust TRAPEZOID as arrow keys to be the best
condition.
16) Adjust TILT as arrow keys to be the best condition
17) Display from Mode 2) to Mode 9).
18) Repeat 10) To 15).
19) PRESET EXIT → Y (Yes) command.
5. Adjustment for White Balance and Luminance.
1) Set the White Balance Meter.
2) Press the (DEGAUSSING) on the OSD menu for
demagnetization of the CDT.
3) Display color 0,0 pattern at Mode 8.
4) Set Brightness and Contrast to max position.
5) COLOR ADJ. → BIAS ADJ. command of the
alignment program.
6) Check whether blue color or not at R-BIAS and G-
BIAS to min position and B-BIAS to 127 (decimal)
position at Sub-Bright Max. If it's not blue color, the
monitor must be repaired.
±
2mm.
±
1mm.