Electrical Adjustments
11
V30 107B5
0. General
1.
2. AC/DC Measurement:
The measurements for AC waveform and DC figure is based on024 x
768 68.7 kHz/85 Hz resolution mode with test pattern "gray scale".
Power input: 110V AC
Input signal mode
Factory preset modes : 8
Resolution
H. freq.
V. freq.
H. V.
1.
720 x 400
31.5 KHz 70Hz (VGA)
-
+
2. 640 x 480
37.5 KHz
75Hz (VGA)
-
-
3.
800 x 600
46.9 KHz 75Hz (VESA) +
+
4. 800 x 600
53.67 KHz 85Hz (VESA) +
+
5. 1024 x 768
60.0 KHz 75Hz (VESA) +
+
6. 1024 x 768
68.7 KHz 85Hz (VESA) +
+
7. 1280 x 1024 80.0 KHz 75Hz (VESA) +
+
8. 640 x 480
43.3 KHz 85Hz
-
-
Factory preload modes
Resolution
H. freq.
V. freq.
H V
9. 640 x 350
37.8 KHz
85 Hz
+
-
10. 640 x 480
50.6 KHz 100 Hz
-
-
11. 640 x 480
31.46 KHz
60 Hz
-
-
12. 640 x 480
37.86 KHz
72.8Hz
-
-
13. 1280 x 960
86.0 KHz
85 Hz
+ +
14. 640 x 350
31.469 KHz
70 Hz
+ -
15. 720 x 400
37.92 KHz
85 Hz
-
+
16. 800 x 600
63.9 KHz 100 Hz
+ +
17. 800 x 600
37.8 KHz
60.3Hz
+ +
18. 800 x 600
48.07 KHz
72.1Hz
+ +
19. 832 x 624
49.7 KHz
74.6Hz
+ +
20. 1024 x 768
48.36 KHz
60 Hz
-
-
21. 1024 x 768
56.47 KHz
70 Hz
-
-
22. 1152 x 864
67.5 KHz
75 Hz
+ +
23. 1152 x 864
77.1 KHz
85 Hz
+ +
24. 1152 x 870
68.68 KHz
75 Hz
-
-
25. 1152 x 900
71.8 KHz
76 Hz
+ +
26. 1280 x 1024
63.98 KHz
60 Hz
+ +
27. 1280 x 960
60
KHz
60 Hz
+ +
28. 1600 x 1200
75
KHz
60 Hz
+ +
29. 1600 x 1200
81.25 KHz
65 Hz
+ +
: 21
3.Monitor the following auxiliary voltages.
4.5 Adjust brightness controls to center position except for contrast
control which should be set to MAX.
+5V source across 7153 Pin out and GND
+5V +/- 0.15 VDC
+6V source across C2154
+6.2V +/- 0.2 VDC
+12V source across C2155
+12.6V +/- 0.4 VDC
-12V source across C2156
-12.5V +/- 0.4 VDC
+82V source across C2153
+82.0V +/- 1.5 VDC
+190V source across C2152(+TO gND) +190.5V +/- 3.0 VDC
-137V source across C2630
-137.0V +/- 10.0 VDC
4. General conditions for alignment
Note: Do not use heatsink as ground.
4.1 During all alignments, supply a distortion free AC mains voltage
to set via an isolating transformer with low internal impedance.
4.2 Align in pre-warmed condition, at least 30 minutes warm-up with
nominal picture brightness.
4.3 Purity, geometry and subsequent alignments should be carried
out in magnetic cage with correct magnetic field.
Northern hemisphere : H=0, V=450 mG, Z=0
Southern hemisphere : H=0, V=-500 mG, Z=0
Equatorial Support
: H=0, V=0
mG, Z=0
4.4 All voltages are to be measured or applied with respect to ground.
5. To access factory mode
To leave factory mode
5.1 Turn off monitor (don't turn off PC)
5.2 Press '"
" and "
" simultaneously on the front control
panel,then press "
",wait till the OSD menu with characters
V30 107B5 P V0.51 20021220 (below OSD menu)" come on the
screen of monitor.
5.3 If OSD menu disappears on the screen of monitor, press "
"
again (anytime), then the OSD menu comes on the screen again.
5.4 Using "
" : to select OSD menu.
5.5 Using "
" : to increase or decrease the setting.
5.6 Using "
" to access/confirm the selection.
5.7 After alignment of factory mode, turn off monitor (if you do not
turn off monitor, the OSD menu is always at the factory mode),
then turn on monitor again (at this moment, the OSD menu goes
back to user mode).
MODEL SELECT
Factory
Mode
Indicator
6. Picture geometry setting
- 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 contrast control at Max. position, and brightness control in the
mid-point.
6.4 Alignment of horizontal geometry and vertical geometry
6.4.1 Adjust the H-width to 306 mm
6.4.2 Adjust the H-phase to center position.
6.4.3 Adjust V-size to 230mm.
6.4.4 Adjust V-Position to center.
Adjust/Trapezoid/pincushion/balance pincushion/paralleogram
6.4.5 Adjust picture tilt via I C BUS for correct top/bottom lines.
6.4.6 Adjust the top and bottom corner by I C to get optimum
corner geometry.
6.4.7 Adjust the parallelogram by I CBUS to get optimum vertical line.
6.4.8 Adjust the balance pincushion by I C BUS to get optimum
vertical line.
6.4.9 Adjust the trapezoid to get optimum vertical line.
6.5 Adjust size/centering/trapezium/pincushion/parallelogram
of all other preset modes via I C bus.
(to repeat from step 6.4.1 to step 6.4.9)
2
2
2
2
2
V30 107B5 P V0.51 20021220
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