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3-3. Focus Adjustment
1.
Receive a television broadcast signal.
2.
Normalize the picture setting.
3.
Adjust the focus control located on the flyback transformer to
obtain the best focus at the centre of the screen.
Bring only the centre area of the screen into focus, the magenta-
ring appears on the screen. In this case, adjust the focus to
optimize the screen uniformly.
3-4. Screen (G2), White Balance
[Adjustment in the service mode using the remote
commander]
G2 adjustment
1.
Input a dot signal from the pattern generator.
2.
Set the Picture, Brightness and Colour to minimum.
3.
Apply 165V DC from an external power supply to the R, G
and B cathodes of the CRT.
4.
Whilst watching the picture, adjust the G2 control [SCREEN]
located on the flyback transformer to the point just before the
flyback return lines disappear.
Layout of each control
Note :
If you are unable to adjust the corner convergence properly,
this can be corrected with the use of permalloy magnets.
1.
Input an all-white signal from the pattern generator.
2.
Set the TV set or operation in Service Mode.
[ See Page 21 ].
3.
Select ‘Service’ from the on screen menu display and press
‘Right Arrow’.
4.
The ‘Service’ menu will appear on the screen.[See Page 22]
5.
Set the ‘Contrast’ to MAX.
6.
Set the ‘R-Drive’ to 50.
7.
Adjust the ‘G-Drive’ and the ‘B-Drive’ so that the white
balance becomes optimum.
8.
Press the ‘OK’ button to write the data for each item.
9.
Set the ‘Contrast’ to MIN.
10. Set the ‘R-Cutoff’ to 29.
11. Adjust the ‘G-Cutoff’, and the ‘B-Cutoff’ with the left and
right buttons on the remote commander so that the white
balance becomes optimum.
12. Press the ‘OK’ button to write the data for each item.
White balance adjustment for TV mode
Y-splitting axis correction magnet
V STAT convergence magnet
BMC (Hexaploe) magnet
Purity magnet
a-d: screen-corner
convergence defect
a
b
c
d
a
b
d
Permalloy Assy
X-4387-214-1
c
Install the permalloy assembly
for the area that needs correcting.
Convergence adjustment with permalloy
Focus
Screen
Содержание Trinitron KV-29XL70K
Страница 34: ...A B C D E F G H I J K L M N 1 2 3 4 5 6 7 8 9 10 11 34 A Printed Wiring Board Conductor side A ...
Страница 35: ...A B C D E F G H I J K L M N 1 2 3 4 5 6 7 8 9 10 11 35 A Printed Wiring Board Conductor side B ...
Страница 39: ...A B C D E F G H I J K L M N 1 2 3 4 5 6 7 8 9 10 11 39 G Board Schematic Diagram Power Supply ...
Страница 40: ...A B C D E F G H I J K L M N 1 2 3 4 5 6 7 8 9 10 11 40 D Board Schematic Diagram Deflection ...
Страница 44: ...A B C D E F G H I J K L M N 1 2 3 4 5 6 7 8 9 10 11 44 M Board Schematic Diagram Micro Processor ...
