Sony KV-28LS36B Service Manual ▷ View online
- 17 -
4.
If the V.STAT magnet is moved in the direction of the (a)
and (b) arrows, the Red, Green and Blue points move as
and (b) arrows, the Red, Green and Blue points move as
indicated below.
1.
[Moving horizontally], adjust the H.STAT control so that
the Red, Green and Blue points are on top of each other at
the centre of the screen.
the Red, Green and Blue points are on top of each other at
the centre of the screen.
2.
[Moving vertically], adjust the V.STAT magnet so that the
Red, Green and Blue points are on top of each other at the
centre of the screen.
Red, Green and Blue points are on top of each other at the
centre of the screen.
3.
If the H.STAT variable resistor is unable to bring the Red,
Green and Blue points together at the centre of the screen,
adjust the horizontal convergence with the H.STAT variable
resistor and the V.STAT magnet in the manner indicated
below.
[In this case, the H.STAT variable resistor and the V.STAT
magnet influence each other].
Green and Blue points together at the centre of the screen,
adjust the horizontal convergence with the H.STAT variable
resistor and the V.STAT magnet in the manner indicated
below.
[In this case, the H.STAT variable resistor and the V.STAT
magnet influence each other].
The movement of the magnets interact with each other and so
the respective dot position should be monitored while carrying
out this adjustment.
Use the H.STAT VR to adjust the Red, Green and Blue dots so
that they coincide at the centre of the screen
(by moving the dots in the horizontal direction).
the respective dot position should be monitored while carrying
out this adjustment.
Use the H.STAT VR to adjust the Red, Green and Blue dots so
that they coincide at the centre of the screen
(by moving the dots in the horizontal direction).
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
3-2. Convergence
Operation of the BMC (Hexapole) magnet.
Preparation:
·
Before starting this adjustment, adjust the focus, horizontal
size and vertical size.
size and vertical size.
·
Minimize the Brightness setting.
·
Input a dot pattern from the pattern generator.
Horizontal and Vertical Static Convergence
Fig.3-5
·
Tilt the V.STAT magnet and adjust the static convergence by
opening or closing the V.STAT magnet.
opening or closing the V.STAT magnet.
B
G
R
B
G
R
a
a
b
b
a
b
B
G
R
a
a
B
G
R
b
b
B
G
R
a
b
R
G
B
b
a
Center dot
R
G
B
R
G
B
C Board
RV702 (H STAT)
H STAT Convergence
(on mount side)
H STAT Convergence
(on mount side)
H STAT
convergence
control
V.STAT Vertical Static Magnet
- 18 -
+
YCH VR
Deflection Yoke
+
+
Tilt Direction
If you are unable to adjust the corner convergence properly,
this can be corrected with the use of permalloy magnets.
this can be corrected with the use of permalloy magnets.
HTIL correction can be performed by adding a TLH correction
assembly to the Deflection yoke.
assembly to the Deflection yoke.
HTIL Adjustment
YCH Adjustment
TLV Adjustment
Geometry Adjustment.
Preparation:
Before starting this adjustment, adjust the horizontal and
vertical static convergence.
vertical static convergence.
1.
Remove the deflection yoke spacer.
2.
Tilt the deflection yoke as indicated in the figure below and
optimise the geometry.
Tilting the DY Up and Down will balance the upper and
lower pin adjustment.
Tilting the DY Left and Right will balance the H-Trap
adjustment.
optimise the geometry.
Tilting the DY Up and Down will balance the upper and
lower pin adjustment.
Tilting the DY Left and Right will balance the H-Trap
adjustment.
3.
Re-install the deflection yoke spacer.
Screen Corner Convergence
TLH pieces
Deflection Yoke
a
b
d
Permalloy Assy
X-4387-214-1
X-4387-214-1
c
Install the permalloy assembly
for the area that needs correcting.
for the area that needs correcting.
Convergence adjustment with permalloy
+
TLV VR
Deflection Yoke
+
+
a-d: screen-corner
convergence defect
convergence defect
a
b
c
d
- 19 -
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
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]
commander]
G2 adjustment
1.
Input a dot signal from the pattern generator.
2.
Enter the ‘Service Mode’ by pressing ‘TEST’, ‘TEST’ and
‘38’ (TT-38) on the remote commander, to set up the G2
service adjustment mode.
‘38’ (TT-38) on the remote commander, to set up the G2
service adjustment mode.
3.
Whilst watching the picture, adjust the G2 control [SCREEN]
located on the Flyback Transformer to the point where the
OSD menu indication shows “OK”.
located on the Flyback Transformer to the point where the
OSD menu indication shows “OK”.
Layout of each control
1.
Input an all-white signal from the pattern generator.
2.
Enter into the ‘Service Mode’ by pressing ‘TEST’, ‘TEST’
and ‘MENU’ on the Service Commander.
and ‘MENU’ on the Service Commander.
3.
Select ‘Service’ from the on screen menu display and press
the right arrow button on the remote commander.
the right arrow button on the remote commander.
4.
The ‘Service’ menu will appear on the screen.
[See Page 20]
[See Page 20]
5.
Set the ‘Contrast’ to MAX.
6.
Set the ‘R-Drive’ to 25.
7.
Adjust the ‘G-Drive’ and the ‘B-Drive’ so that the white
balance becomes optimum.
balance becomes optimum.
8.
Press the ‘OK’ button to write the data for each item.
9.
Set the ‘Contrast’ to MIN.
10. Adjust the ‘G-Cutoff’, and the ‘R-Cutoff’ with the left and
right buttons on the remote commander so that the white
balance becomes optimum.
balance becomes optimum.
11. Press the ‘OK’ button to write the data for each item.
White balance adjustment for TV mode
V.STAT
BMC (Hexapole)
Purity
3-3. Focus Adjustment
Screen
Focus
- 20 -
4-1. Electrical Adjustments
Service adjustments to this model can be performed using the
supplied remote Commander RM-932.
supplied remote Commander RM-932.
‘TT—’ will appear in the upper right corner of the screen.
Other status information will also be displayed.
Other status information will also be displayed.
3.
Press ‘MENU’ on the remote commander to obtain the following
menu on the screen.
menu on the screen.
4.
Move to the corresponding adjustment item using the
up or down arrow buttons on the Remote Commander.
up or down arrow buttons on the Remote Commander.
5.
Press the right arrow button to enter into the required menu item.
6.
Press the ‘Menu’ button on the Remote Commander to quit the
Service Mode when all adjustments have been completed.
Service Mode when all adjustments have been completed.
Note :
•
After carrying out the service adjustments, to prevent the
customer accessing the ‘Service Menu’ switch the TV set OFF
and then ON.
customer accessing the ‘Service Menu’ switch the TV set OFF
and then ON.
i+
5
+
(ON SCREEN (DIGIT 5) (VOLUME +) (TV)
DISPLAY)
DISPLAY)
SECTION 4
CIRCUIT ADJUSTMENTS
How to enter into the Service Mode
T
S
U
J
D
A
F
I
t
s
u
j
d
A
C
G
A
e
t
u
m
o
t
u
A
n
i
a
G
o
i
d
u
A
g
n
i
t
a
G
L
)
5
1
+
,
6
1
-
(
0
+
1
0
0
1
0
0
1.
Turn on the main power switch and enter into the stand-by mode.
2.
Press the following sequence of buttons on the Remote
Commander.
Commander.
U
N
E
M
R
O
R
R
E
2
0
E
3
0
E
4
0
E
5
0
E
6
0
E
7
0
E
8
0
E
9
0
E
0
1
E
1
1
E
E
M
I
T
G
N
I
K
R
O
W
S
R
U
O
H
S
E
T
U
N
I
M
P
C
O
A
/
N
P
V
O
C
N
Y
S
V
R
K
I
C
I
I
M
V
N
E
L
G
N
U
J
R
E
N
U
T
P
D
N
U
O
S
V
8
)
5
5
2
,
0
(
)
5
5
2
,
0
(
)
5
5
2
,
0
(
)
5
5
2
,
0
(
)
5
5
2
,
0
(
)
5
5
2
,
0
(
)
5
5
2
,
0
(
)
5
5
2
,
0
(
)
5
5
2
,
0
(
)
5
5
2
,
0
(
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
1
1
E
C
I
V
R
E
S
R
-
t
e
s
f
f
O
G
-
t
e
s
f
f
O
e
v
i
r
D
-
R
e
v
i
r
D
-
G
e
v
i
r
D
-
B
q
e
r
F
-
k
a
e
P
y
a
l
e
D
-
a
m
u
L
0
C
S
k
a
e
P
-
e
t
i
h
W
t
n
o
c
b
u
S
t
h
g
i
r
b
u
S
l
o
c
b
u
S
p
r
a
h
s
b
u
S
.
r
B
f
f
o
t
u
C
D
S
O
r
B
T
X
T
r
B
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
,
0
(
)
5
1
,
0
(
)
3
,
0
(
)
5
1
,
0
(
)
5
1
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
5
1
,
0
(
)
5
1
,
0
(
j
d
A
j
d
A
1
3
j
d
A
j
d
A
0
8
3
8
3
5
1
8
0
3
j
d
A
5
2
1
3
0
1
7
Y
R
T
E
M
O
E
G
y
t
i
r
a
e
n
i
L
-
V
ll
o
r
c
S
-
V
k
l
B
H
-
t
f
e
L
k
l
B
H
-
t
h
g
i
R
e
l
g
n
A
-
V
w
o
B
-
V
e
r
t
n
e
C
-
H
e
z
i
S
-
H
p
m
A
-
n
i
P
n
i
P
-
r
e
n
r
o
C
-
U
n
i
P
-
r
e
n
r
o
C
-
L
e
s
a
h
P
n
i
P
e
p
o
l
S
-
V
e
z
i
S
-
V
n
o
i
t
c
e
r
r
o
C
-
S
e
r
t
n
e
C
-
V
m
o
o
Z
-
V
a
t
n
e
g
a
M
)
3
6
,
0
(
)
3
6
,
0
(
)
5
1
,
0
(
)
5
1
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
)
3
6
,
0
(
j
d
A
2
3
0
1
7
j
d
A
j
d
A
j
d
A
j
d
A
j
d
A
j
d
A
j
d
A
j
d
A
0
4
j
d
A
j
d
A
j
d
A
7
2
1
3
y
r
t
e
m
o
e
G
e
c
i
v
r
e
S
n
g
i
s
e
D
s
u
t
a
t
S
d
n
u
o
S
t
s
u
j
d
a
F
I
u
n
e
M
r
o
r
r
E
4
4
.
3
v
o
e
r
e
t
S
2
-
E
F
h
F
F
h
0
0
a
t
a
d
y
r
o
t
c
a
F
G
0
1
4
3
P
S
M
:
e
c
i
v
e
D
P
S
M
Click on the first or last page to see other KV-28LS36B service manuals if exist.