Other Adjustments - Samsung SP43T7HLX Service Manual

Alignment and Adjustments

2-5 Other Adjustments

2-5-1 Screen Adjustment
1. Warm up the TV for at least 30 minutes.
2. Select the "DYNAMIC" Video mode.
3. Trun to the Video Mode(No Signal) using a
remote-control.
4. Connect an oscilloscope to RK, GK, BK.
5. Adjust the VR (Focus Pack) screen so that RK,
GK, BK pulse is 20Vp-p each. (Turn the R,G,B
VR screen fully counterclockwise in the area of
each flyback line.)
2-5-2 White Balance Adjustment
1. Select the "DYNAMIC" video mode.
2. Input 100% white pattern.
3. In the stand-by mode, press the remote-control
keys in the following sequence:
Info → Menu → Mute → Power ON
4. Warm up the TV for at least 30 minutes.
5. Input a 10-step signal.
6. R-cut off, B-cut off, and off by pressing the
Direction
7. Adjust the low light with viewing the dark
side of the screen.
8. Select R-drive, and B-drive by pressing
Direction
9. Adjust the high light with viewing the light
side of the screen.
10. If necessary, redo adjustments 6~9.
11. Press the Menu key to exit.
2-5-3 Sub-Brightness Adjustment
1. Input a sub-brightness adjustment signal.
(TOSHIBA PATTERN)
2. In the stand-by mode, press the remote-control
2-30
keys.
keys.
keys in the following sequence :
Displsy → Menu → Mute → Power ON
3. Select Sub-Bright by pressing the Deletion
Keys.
4. Adjust so that the 63 step on the right side of
the screen is not seen (Use the
5. Press the Menu key to exit.
2-5-4 Static Focus Adjustment
PRECAUTION
1. Select the "DYNAMIC" video mode.
2. Input a crosshatch pattern.
3. Cover the lenses that are not being adjusted.
4. Connect a convergence jig and read data.
5. Adjust the lens for best focus.
(See Fig, 4-1)
STATIC FOCUS (CONTINUED)
Vary the focus pack VR (Red, Blue) on the
front cabinet. Adjust the TV for best possible
focus around the center of the crosshatch
pattern, without losing overall screen balance.
Figure Crosshatch Pattern
Examine these points together.
Examine these points together
Fig. 4-1 Crosshatch Pattern.
Samsung Electronics