Filter
Top Products
31
ALIGNMENT PROCEDURE
Standard Adjustment Conditions
1. Power source voltage : AC 120V, 60Hz./AC 220V, 50Hz
2. Aging : Take at least 20 minutes warm-up time.
3. Signals.
Video : Analog 0.7Vpp 75 terminal positive polarity
Synchronizing : TTL level Negative/Positive Separate/Composite
Deflection frequency
Horizontal Frequency : 30KHz - 69KHz
Vertical Frequency : 50Hz - 160Hz
Pre-Adjustment
1. High voltage Adjustment
Adjust 26 kvdc between Anode cap and ground at a cross hatch pattern of 31.5KHz by using VR551.
2. B+ Adjustment (H.min size)
(a) Receive a cross hatch pattern of 31.5KHz
(b) Set the H-Size control to the minimum.
(c) Adjust H-Size to 295mm by using VR601
Main Adjustment
1. Setting the Controls
Set the value of items as following.
Contrast : Max. (OSD value up to 100)
Brightness : Center (Set the OSD value to 50)
2. H.size, V.size, H.phase, V.position, Pincushion, Trapezoid
Perceive the cross hatch pattern of Factory preset mode.
H.Size, V.size, H.phase, V.position, Pincushion, Trapezoid are adjusted at each mode.
In Factory, Auto Alignment was done at each mode. Therefore, Factory preset mode has it’s own value
according to each control.
3. Focus
(a) Set brightness control to center and contrast control to MAX.
(b) Receive all “H” character pattern of 60KHz mode signal.
(c) Adjust the Focus control of FBT to obtain best Focus (static focus and Dynamic focus).
4. Geometric Distortion Adjustment.
(a) Receive the cross hatch pattern of VGA mode signal by using the signal generator.
(b) Pin balance, Parallelogram are adjusted the best geometric status.
(c) Repeat the adjustment at each mode.
5. White Balance Adjustment
(a) Receive a full white pattern of 60KHz mode.
(b) Select 9300°K on the OSD Menu.
(c) Set the bright control and contrast control to the maximum and receive the all black pattern.
(d) Adjust the FBT screen VR to get the screen luminosity to 1 Ft/L.
(e) Select the R, G, B Bias on the OSD menu and adjust the ADJUST +/– key to get the color coordinates in
X=0.281, Y=0.311
(f) If the screen luminosity is changed adjust the sub brightness control to get the 1 Ft/L screen luminosity.
(g) Set the brightness control to the center and contrast control to the maximum.
(h) Receive a full white pattern.
(i) Select the R, G, B gain on the OSD menu and adjust the ADJUST +/– key to get the color coordinates in
X=0.281±0.03, Y=0.311±0.03
(j) Adjust the sub contrast control to get the screen luminosity to 34 Ft/L/
(k) Select 6550°K on the OSD menu and set the bright control and contrast control to the maximum and receive
the all black pattern.