Table of Contents
Advertisement
h t t p : / / j d w x z l w . 5 d 6 d . c o m / ? f r o m u s e r = S NvÛ ~ ô O î
1. General
2.
Input signal mode
Factory preset modes : 11
Resolution modes
H. freq.
1.
720 x 400
31.5 Khz
2.
640 x 480
31.5 Khz
3.
800 x 600
35.2 Khz
4.
640 x 350
37.9 Khz
5.
640 x 480
43.3 Khz
6.
800 x 600
46.9 Khz
7.
800 x 600
53.7 Khz
8.
1024 x 768
60.0 Khz
9.
1024 x 768
68.7 Khz
10.
1280 x 1024
80.0 Khz
11.
1280 x 1024
91.2 Khz
3.0 Main chassis alignment
3.1 Power supply adjustment
3.1.1 Set Vg2 manually (screen) to fully counterclockwise (zero
beam current).
3.1.2 Apply 80KHz/75Hz full black pattern.
3.1.3 Monitor the following auxiliary voltages.
+197.0V source across C2152 and gnd
+ 82.5V source across C2151
+
6.2V source across C2155
+ 12.2V source across C2153
- 12.2V source across C2154
3.2 H-Deflection supply voltage adjustment
3.2.1 Apply 80KHz /75Hz 1280 x 1024 full black pattern.
Adjust manually
R3561
to obtain
across C2600 at zero beam current.
3.3
Picture geometry and EHT regulation adjustment
3.3.1 EHT regulation adjustment
At 1280 x 1024 80KHz/75Hz mode full black pattern
Use DC voltage meter to measure socket 1681 Pin 1.
Adjust VR 3699
To get 4.7V +/- 0.05V at socket 1681 pin 1.
4. General conditions for alignment
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=-520 mG, Z=0
4.4 All voltages are to be measured or applied with respect to ground.
Note: Do not use heatsink as ground.
4.5 Adjust brightness controls to center position except for contrast
control which should be set to MAX.
4.6 Any external voltage sources should have a low internal
impedance.
4.7 Adjust function controls to center position unless otherwise
stated.
4.8 The white balance and purity has to be adjusted in dully lighted
room.
4.9 All alignments have to be done in a room with a temperature of
0
25+/- 10 C.
[ ¶ u 5~ ô O î • D e™ • Q ÿ Q M • 9 N • } T yÍ ~ ô O î • D e™
Electrical Adjustments
V. freq.
H.
V.
70Hz (VGA)
-
+
60 Hz (VGA)
-
-
56 Hz (Mac- )
+
+
85 Hz (VESA)
+
-
85 Hz (VGA)
-
-
75 HZ(VESA)
+
+
85 HZ(VESA)
+
+
75 HZ(VESA)
+
+
85 HZ(VESA)
+
+
75 Hz (VESA)
+
+
85 Hz (VESA)
+
+
+197.0V +/- 3.0 VDC
+ 82.5V
+/- 1.5 VDC
+ 6.2V
+/- 0.2 VDC
+12.2V
+/- 0.7 VDC
- 12.2V
+/- 0.7 VDC
48V
+/-0.3V for SDI CRT
152V +/-0.3V for
LG CRT
5. To access 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
V40 109F5 V0.45 20030410 (below OSD menu)" come on the
screen of monitor.
MODEL SELECT
Factory
Mode
Indicator
V40 107P5
V0.45 20031013
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.
To leave factory mode
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).
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
2
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)
V40 107P5
11
Go to cover page
2
2
2
2
"
Advertisement
Table of Contents
