SAMSUNG CT766XAP
Service Manual

Alignment and Adjustments

3-3-11 White Balance Adjustment
3-3-11 (A) SCREEN ADJUSTMENTS
1. Input a TOSHIBA pattern. 2. Check R506 �G� pin on the CRT PCB with an oscilloscope. 3. Enter the Horizontal Line Mode. 4. Adjust the Screen Control on the FBT so that the waveform of the 21st line is DC 2.0 (+0.5)V. _ SIZE DC 29� 2.0 26� 2.4 22� 2.4

3-3-11 (D) SUB-BRIGHTNESS ADJUSTMENT
1. Input a TOSHIBA pattern. 2. Set SBT so that the brightness level in lowlight is 1.0 F/L.
<TOSHIBA PATTERN> High-Light

Low-Light

3-3-11 (B) HIGH-LIGHT ADJUSTMENT 3-3-11 (E) SUB-COLOR ADJUSTMENT
1. NOTE : If a color analyzer is not available, then approximate the following color adjustments �by eye�. 2. Input a TOSHIBA pattern. 3. Set high-light to 290/300 (X,Y) with a color analyzer. 4. Set low-light to 1.0F/L ( 22� low-light 1.2F/L). 5. Adjust RG, BG and set GG to step 32. 29� HEIGHT LIGHT 37 _ 3 + 26� 45 + 3 _ 22� 45 + 3 _ Set �SCR� in the Service Mode to step 0.

3-3-11 (F) SUB-TINT ADJUSTMENT
Set �STT� in the Service Mode to step 10.

3-3-11 (G) VERTICAL SIZE ADJUSTMENT
1. Input a lion head pattern. 2. Set VS to 32 in the Factory Mode. 3. Set VA so that the top margin is 4.0. Adjust SL so that the bottom margin is 4.0. If the top and bottom margins are different, adjust VA so that their sum is 8.0.

3-3-11 (C) SUB-CONTRAST ADJUSTMENT
1. Set SCT so that the brightness level in highlight is 37 F/L (for a 29� SCREEN).

3-3-11 (H) HORIZONTAL SHIFT ADJUSTMENT
1. Input a lion head pattern. 2. Adjust �HS� in the Service Mode so that the left and right margins of the lion head pattern are 5.0 + 0.5 : CT633BW/CT683BW, 6.3 + 0.5 : _ _ CT566BV/CT566BW/CT567BW/ CT568BW/CT766DW

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