Focus Adjustment; Screen (G2), White Balance - Sony KD-32DX150U Service Manual

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.
a
a-d: screen-corner
convergence defect
c
Install the permalloy assembly
for the area that needs correcting.
b
Permalloy Assy
X-4387-214-1.
d
Convergence adjustment with permalloy
1.
2.
Purity magnet
3.
BMC (Hexaploe) magnet
V STAT convergence magnet
Y-splitting axis correction magnet
4.
5.
6.
7.
8.
b
d
1.
2.
3.
4.
a
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. Set the 'Contrast' to MIN.
11. Set the 'R-Cutoff' to 35.
12. Adjust the 'G-Cutoff', and the 'B-Cutoff' with the left and
c
13. Press the 'OK' button to write the data for each item.
- 24 -

3-3. Focus Adjustment

Receive a cross hatch pattern from a video generator.
Adjust the focus control located on the flyback transformer to
the best level at the centre of the screen.
Check left and right x-axis vertical line thickness and adjust to
make them as thin as possible.
Considering x-axis and centre, adjust to make uniform.
If no cross hatch signal is possible, follow the next three steps.
Receive a television broadcast signal.
Normalize the picture setting.
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.
Focus
Screen

3-4. Screen (G2), White Balance

[Adjustment in the service mode using the remote
commander]
G2 adjustment
Input a dot signal from the pattern generator.
Set the Picture, Brightness and Colour to minimum.
Apply 165V DC from an external power supply to the R, G
and B cathodes of the CRT.
Whilst watching the picture, adjust the G2 control [SCREEN]
located on the flyback transformer to the point just before the
flyback return lines disappear.
White balance adjustment for TV mode
Input an all-white signal from the pattern generator.
Program the Remote Commander for operation in Service Mode.
[See Page 25].
Enter into the 'Service Mode' by pressing 'VIDEO' button twice
and 'MENU' on the Service Commander.
Select 'Device Register Setting' from the on screen menu display
and press 'Right Arrow'.
Select 'Backend' from the on screen menu display and press
'Right Arrow'.
Set the 'Contrast' to MAX.
Set the 'R-Drive' to 45.
Adjust the 'G-Drive' and the 'B-Drive' so that the white
balance becomes optimum.
Press the 'OK' button to write the data for each item.
right buttons on the remote commander so that the white
balance becomes optimum.