jedyne do czego mogę mieć zastrzeżenie to jakość zdjęć zawartych w przesłanej instrukcji serwisowej ponieważ są fatalnej jakości, praktycznie nieczytelne. tak poza tym jestem zadowolony to jest to czego szukałem.
Instrukcja jest OK. Schematy czytelne, opisane niektóre procedury.
Tekstowy podgląd strony 19 (kliknij aby zobaczyć)
KV-25X5
(4)
�
Screen corner convergence.
If you are unable to adjust the corner convergence properly, this can be corrected by the use of permalloy assemblies.
3-3. Screen [G2], White balance
G2 Setting
1. 2. 3. 4. Input a dot signal from the pattern generator. Set the Picture, Brightness and Colour to minimum. Apply 170Vdc from an external power supply to the R, G and B cathodes of the CRT. Whilst watching the picture, adjust the G2 control [RV701 SCREEN] located on the C Board to the point just before the flyback return lines disappear.
a a-d: screen-corner convergence defect c
b
d
White balance adjustment
1. 2. 3. 4. 5. Input a �PAL� all-white signal from the pattern generator. Enter into the Service Mode. Enter into the �Picture� service menu. Select the �Green drive� and adjust so that the White Balance becomes optimum. Select the �Blue drive� and adjust so that the White Balance becomes optimum. Set the Picture to MIN. Set the �R-cut-off� to 07. Adjust the �G-cut-off�, and the �B-cut-off� so that the White Balance becomes optimum. Press the button to return to TV operation.
Fit the permalloy assembly to the rear of the CRT to correct the area at fault.
a
6. 7. 8. 10.
b
PICTURE
R - Drive G - Drive Permalloy
c d
Adj Adj Adj Adj Adj Adj 02 01 01 Adj Adj Adj
B - Drive R - cut - off G - cut - off B - cut - off ID - start ID - stop ID - level Bellfo Sub Colour Sub Brightness
3-4. FOCUS
1. 2. 3.
FOCUS
Input a Phillips colour pattern Set the picture settings to normal. Adjust the focus control located on the Flyback transformer to bring the centre of the screen into focus. Note :Bring only the centre area of the screen into focus, switch to an all-white pattern and confirm that the magenta ring is hardly noticed. To obtain optimum focus balance the focus setting between optimum screen centre focus and a reduced magenta ring level.
