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Alignment and Adjustments
1-4 Other Adjustments
1-4-1 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. Press the Menu key to exit. 5. Adjust the VR (VR501, VR531, VR561) 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.) 3. Select Sub-Bright by pressing the Volume +/keys. 4. Adjust so that the 63 step on the right side of the screen is not seen (Use the Volume +/keys). keys in the following sequence : Displsy � Menu � Mute � Power ON
1-4-4 High Voltage (29KV) Check
PRECAUTION
1. Input a lion head pattern.
1-4-2 White Balance Adjustment
2. Select �DYNAMIC� video mode. 1. Select the �DYNAMIC� video mode. 3. Warm up the TV for at least 10 minutes. 2. Input 100% white pattern. 4. Use a 1000:1 probe. 3. In the stand-by mode, press the remote-control keys in the following sequence: Displsy � 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 G-cut off by pressing the Volume +/- keys. 7. Adjust the low light with viewing the dark side of the screen. 8. Select R-drive, G-drive and B-drive by pressing the Volume +/- keys. 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.
ADJUSTMENT
1. Connect the (+) terminal of the 10000:1 probe to the high voltage distributor and the(-) terminal to GND(located on the deflection board). 2. Adjust RR471S (located on the deflection board) so that the digital meter indicates DC290V ± 0.1V.
4-4-5 F.S. (Fail Safe) Circuit Check
Note : The finished product has a well-mounted VR(RR402S). If necessary, do the F.S adjustments in the following sequece. 1. Use a digital multimeter. 2. Connect the digital multimeter to the JIG pin (DZ482S) terminals. 3. Adjust VR(RR402S) so that the voltage becoms 2.25V. 4. After the adjustments are complete be sure to mount VR(RR402S) correctly.
1-4-3 Sub-Brightness Adjustment
1. Input a sub-brightness adjustment signal. (TOSHIBA PATTERN) 2. In the stand-by mode, press the remote-control
Samsung Electronics
1-15
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