15
109P2 GS3 CM25
Electrical Adjustments (Continued)
7.6 : Select the 6500K colour temperature as shown in Fig.
2.2.
: Adjust the R/G/B cutoff and R/G/B gain as shown in
procedure 7.2~7.3 to get
R/G/B cutoff x= 0.313 +/- 0.015
y= 0.329 +/- 0.015
R/G/B gain
x= 0.313 +/- 0.015
y= 0.329 +/- 0.015
Y= 28 +/- 2 Ft-L(Adjust Sub-contrast
control (OSD))
7.7 : Select the 5500K colour temperature as shown in Fig.
2.2.
: Adjust the R/G/B cutoff and R/G/B gain as shown in
procedure 7.2~7.3 to get
R/G/B cutoff x= 0.332 +/- 0.015
y= 0.347 +/- 0.015
R/G/B gain
x= 0.332 +/- 0.015
y= 0.347 +/- 0.015
Y= 25 +/- 2 Ft-L(Adjust Sub-contrast
control (OSD))
- Apply a video signal with cross-hatch pattern.
- Apply a video signal in the 1024 x 768 with 68.7 kHz/85 Hz
mode.
- Set brightness and contrast controls to their center positions
(OSD control).
8. Picture geometry setting (factory pre-set modes)
8.1 Horizontal geometry (OSD control)
- Adjust the H-width to 355 mm
- Adjust the H-phase to center position.
8.2 Vertical geometry (OSD control)
- Adjust vertical size to 265 mm
- Adjust V-phase to center position.
8.3 Trapezoid distortion (OSD control)
- Adjust the trapezoid to get optimal vertical lines.
8.4 Pincushion (OSD control)
- Adjust the pincushion to get optimal vertical line.
8.5 Parallelogram (OSD control)
- Adjust parallelogram so that vertical lines are vertical or
symmetrically about the center vertical axis.
8.6 Unbalance-pin (OSD control)
- Adjust the unbalance-pin so that that vertical border lines
are aligned symmetrically.
8.7 Rotation (OSD control)
- Adjust picture so that vertical tilt is less than +/- 0.5mm.
8.8 Top/Bottom corner(control)
- Adjust the top/bottom corner control to get optimum corner
geometry.
8.9 Store the preset results by selecting the "exit" (OSD
control).
8.10 Repeat the procedure 8.1 to 8.9 until all the preset
timings have been adjusted completely
9. Focus adjustment
10. Loading DDC code
: Apply a video signal in the 1024 x 768 with 68.7 kHz/85 Hz
mode
: Select " @ " pattern.
: Set the brightness at center (50%) and the contrast to 22
FL.
: Adjust focus potentiometers (top of L.O.T.) Focus 1 for
horizontal focus and Focus 2 for vertical focus so that the
picture at 2/3 of the diagonal lines (from center to four
corners) of the displayed screen is as sharp as possible.
The DDC HEX data should be written
into the DDC IC by EEPROM writer or equivalent method.
a: Service DDC Kit
DDC Module (DDC cable), Part number = 4822 320 12004
DDCV2A.EXE software (3.5" disk), Part number = 3138
106 10065
b: Please refer to Service information 4822 727 21027(4822
727 21038) for using the Service DDC Kit.
9
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