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- Alignment and Adjustments
- Exploded View and Parts List
- Electric Parts List
- PCB Diagrams
- Schematic Diagrams
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Very quick response. Very good and accurate print quality of the scanned document.
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The service manual was very usable and clear enough to see the individual values of all of the components (unlike some of the service manuals I have gotten in the past from web sites similar to this one). The price was right and the information was greatly appreciated. It helped me with an otherwise very difficult repair. It was much needed and appreciated. A faster turn around on my order would be nice, but I understand the constraints on your staff's time. Thank you for your service.
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Excellent manual. Helped me out with disassembling and troubleshooting my projector.
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thanks you are the best.Very good detail, Quick service response. A useful service manual with all details.
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Great service!!! Polecam gorąco wszystkim zainteresowanym
Alignment and Adjustments
4-4 Other Adjustments
4-4-1 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
4-4-4 High Voltage (30KV) Check
PRECAUTION
1. Input a lion head pattern.
4-4-2 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 digital multimeter. 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. 2. Adjust RR471S (located on the sub board) so that the digital meter indicates DC290V ± 0.1V.
ADJUSTMENT
1. Connect the (+) terminal of the digital multimeter to Q471 and the (-) terminal to Q401 (located on the deflection board).
4-4-5 F.S. (Fail Safe) Circuit Check (GT430,GT431)
Note : The F.S. Circuit check must be performed after servicing. 1. Turn on the TV. 2. Select the �DYNAMIC� video mode. 3. Short F/S Test point (located on the SUB PCB). Then, both sound and picture disappear. (Note: Even if the shorted terminals are removed, both sound and picture do not appear. This proves the F.S. circuit is working. ) 4. To restore both sound and picture, turn off the TV and reset it after about 30 seconds.
4-6-3 Sub-Brightness Adjustment
1. Input a sub-brightness adjustment signal. (TOSHIBA PATTERN) 2. In the stand-by mode, press the remote-control
Samsung Electronics
4-15
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