Samsung SP403JHPX, Руководство по обслуживанию

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Alignment and Adjustments
5-10 Samsung Electronics
5-6-11 Sub-Contrast Adjustment
1. Input a 5-step signal (Color OFF).
2. Connect LCD G1 input to an oscilloscope.
(2 V/div, 10 u sec/div)
3. Adjust the sub-contrast so that the signal level
is 3V, as shown below:
5-6-12 Signal Center Adjustment
1. Input a 5-step signal (Color OFF).
2. Connect LCD G1 input to an oscilloscope, and
check the waveform.
(2 V/div, 10 u sec/div)
3. Set the signal center to 7V.
5-6-13 Common Voltage Adjustment
1. Connect LCD COMMON input to an
oscilloscope, and check the waveform.
(1 V/div, 10 u sec/div)
2. Set the common control to 6.8V.
5-6-14 White Balance Adjustment
1. Input a lion head pattern from a pattern
generator.
2. Adjust the sub-brightness so that the white
cannot be saturated.
3. Adjust R,B contrast for the high light of white
balance.
4. Adjust R,B sub-brightness when the middle
tone is not black and white,but colored.
Repeat adjustments 3 ~ 4 for optimum.
5. Adjust gamma crtl1 for adjusting the bright-
ness of the black side.
6. Adjust R,B gamma crtl1 while checking the
tone of the black side so that any color is not
seen.
7. Repeat adjustments 2 ~ 6, if necessary.
5-6-15 Center Convergence Adjustment
1. Input a lion head pattern from a pattern
generator.
2. Adjust the LCD Horizontal/Vertical POS.
3V
Center 7V