Daewoo 103FH, Service Manual

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Standard Adjustment Conditions
1. Power source voltage : AC 100 - 240Vac, 50/60Hz.
2. Aging : Take at least 15 minutes warm-up time.
3. Signals.
Video : Analog 0.7Vpp 75
Ω
terminal positive polarity
Synchronizing : H+V Sync on Green : 0.286Vpp ± 5% (Negative)
Composite H+V Sync : 1.0Vpp ~5.0Vpp (Positive / Negative)
Separate H, V Sync : TTL Level (Positive / Negative)
Deflection frequency
Horizontal Frequency : 30KHz - 107KHz
Vertical Frequency : 50Hz - 160Hz
Method to launch the factory mode
Step1. Push the menu button.
Step2. Push the brightness control button ( / ) for 5 times in same time.
Main Adjustment
1. Setting the Controls
Set contrast and brightness in Control Menu unless otherwise specified.
Contrast : Max.
Brightness : Center
2. H.size, H.center, V.size, H.center, Side Pincushion, Pincushion S, Pincushion W, Trapezoid,
Parallelogram, Rotation, Pin Balance, H.Linearity, V.Linearity
Receive the cross hatch pattern of Factory preset mode.
H.size, H.center, V.size, H.center, Side Pincushion, Pincushion S, Pincushion W, Trapezoid, Parallelogram,
Rotation, Pin Balance, H.Linearity, V.Linearity controls 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 94KHz mode signal.
(c) Adjust the Static Focus VR to obtain best H.Focus.
(d) Adjust the Dynamic Focus VR to obtain best V.Focus.
(e) If the H/V Focus is not satisfactory, readjust the Static / Dynamic Focus.
4. White Balance Adjustment.
(a) Select 9300°K on the OSD Menu.
(b) Receive a full white pattern of 94KHz.
(c) Select the brightness and the contrast controls to the maximum and each R.G.B. Gain/Bias controls to
the initial values.
(d)Cut off the HVG screen VR.
(e) Receive all the black patterns and adjust HVG screen VR the screen luminosity to be approx. 0.5 ±0.1
Ft/L.
(f) Select the R - BIAS, G - BIAS and B - BIAS on the OSD menu and adjust the / key to get the
color coordinates in X=0.281, Y=0.311.
(g)Adjust screen VR the screen luminosity to be 0.5±0.1 Ft/L.
(h)Select the brightness control to the center (50).
(i) Receive a G.Signal.
(j) Select the G - GAIN on the OSD menu and adjust the
/ key to get the screen luminosity up to
23Ft/L.
(k)Receive a full white pattern of 94KHz.
14
ALIGNMENT PROCEDURE