KV-29SE10B - Sony TV Service Manual (repair manual). Page 19

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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 167V 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
1.
Input an all-white signal from the pattern generator.
2.
Enter into the ‘Service Mode’ using the Remote Commander.
3.
Select WHBL ‘RDRV’ and fix the value to 25 hex.
4.
Adjust WHBL ‘GDRV’ and the ‘BDRV’ so that the white
balance becomes optimum in highlight condition.
5.
Adjust WHBL ‘BKOR’ and the ‘BKOG’ so that the white
balance becomes optimum in cut-off condition.
6.
Set the offset settings for LIVE and GAME mode as shown in
the table below.
White balance adjustment for TV mode
V.STAT
BMC (Hexapole)
Purity
3-3. Focus Adjustment
Screen
Focus
e
v
i
L
-
-
-
<
l
a
n
o
s
r
e
P
-
-
-
<
e
m
a
G
2
+
e
u
l
a
v
d
e
t
s
u
j
d
A
)
d
e
t
s
u
j
d
a
(
R
O
K
B
e
u
l
a
v
d
e
t
s
u
j
d
A
3
-
e
u
l
a
v
d
e
t
s
u
j
d
A
)
d
e
t
s
u
j
d
a
(
G
O
K
B
e
u
l
a
v
d
e
t
s
u
j
d
A
x
e
h
5
2
)
x
e
h
5
2
(
V
R
D
R
x
e
h
5
2
2
+
e
u
l
a
v
d
e
t
s
u
j
d
A
)
d
e
t
s
u
j
d
a
(
V
R
D
G
2
-
e
u
l
a
v
d
e
t
s
u
j
d
A
4
+
e
u
l
a
v
d
e
t
s
u
j
d
A
)
d
e
t
s
u
j
d
a
(
V
R
D
B
6
-
e
u
l
a
v
d
e
t
s
u
j
d
A
OFFSET TABLE
Display
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