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Good scan, very handy and it also includes the user manual. 122 pages in total.
This manual was exactly what I needed. Detailed, useful and delivered as promised.
Great manual good quality really helped in the repair of my Toshiba, thanks
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
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
White balance adjustment
1. 2. 3. 4. 5. Input a âPALâ all-white signal from the pattern generator. Enter into the Service Mode. Enter into the âPictureâ service menu. Select the âGreen driveâ and adjust so that the White Balance becomes optimum. Select the âBlue driveâ and adjust so that the White Balance becomes optimum. Set the Picture to MIN. Set the âR-cut-offâ to 07. Adjust the âG-cut-offâ, and the âB-cut-offâ 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.
6. 7. 8. 10.
R - Drive G - Drive Permalloy
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
1. 2. 3.
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.