Daewoo 529B, Service Manual

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13
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Standard Adjustment Conditions
1. Power source voltage: 100-240Vac 50/60Hz
2. Aging: Take at least 20 minutes warm/up time.
3. Signals
Video : Analog 0.7Vpp 75
Ω
terminal positive polarity
Synchronizing : TTL level Negative/Positive Separate/composite
Deflection frequency
Horizontal Frequency : 30KHz - 70KHz
Vertical Frequency : 50Hz - 160Hz
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Pre-Adjustment
1. B+ Adjustment
Adjust 185 ± 0.5V DC between P008(TP) and ground at 48KHz mode, varying VR101.
2. H.V. Adjustment
Adjust 106 ± 0.5V DC between P009(TP) and ground at 48KHz mode, varying VR501.
3. H.V. Regulation Adjustment
Adjustment 4.85 ± 0.05V DC between P014 and ground at 48KHz mode, varying VR503.
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Main Adjustment
1. Switching to Factory Alignment Mode
Press right and Menu key simultaneously five times, then the OSD controls are switched to factory
mode. If the controls are switched to factory mode, the top line of OSD menu displays at red.
2. Setting the Controls
Set the value of items as following.
Contrast : Max. (OSD value up to MAX)
Brightness : Center (Set the OSD value to center)
3. H.size, V.size, H.phase, V.position, Pincushion, Trapezoid, Parallelogram, Pin balance, Pin corner
Receive the cross hatch pattern of Factory preset mode.
H.size, V.size, H.phase, V.position, Pincushion, Trapezoid, Parallelogram, Pin balance, Pin corner 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.
4. Focus
(a) Set brightness control to center and contrast control to MAX.
(b) Receive all “H” character pattern of 1280 x 1024(64KHz ,60Hz) mode signal.
(c) Adjust the Focus control of FBT to obtain better focus.
5. Geometric Distortion Adjustment.
(a) Receive the cross hatch pattern of 1280 x 1024(64KHz ,60Hz) mode signal.
(b) Pincushion, Trapezoid, Parallelogram, Pin balance, Pin corner are adjusted the best geometric
status.
6. White Balance Adjustment
(a) Receive a cross hatch pattern of 68KHz mode signal by using the signal generator.
(b) Set the brightness control to the center, the contrast control to the maximum and sub contrast
control VR to the center.
(c) Cut off the FBT screen VR.
(d) Set the brightness control to the maximum and receive all the black patterns.
(e) Select the R-Bias, G-Bias and B-Bias on the OSD menu and adjust the DATA +/– key to get the
color coordinates in x=0.281, y=0.311 and adjust the FBT screen VR in y=0.5 ~ 0.8 Ft/L.
(f) Receive a full white pattern.
(g) Select the R-Gain and B-Gain and adjust the DATA +/– key to get the color coordinates in
x=0.281± 0.015, y=0.311±0.015.
ALIGNMENT PROCEDURE