Sony KV-29FS150 Service Manual ▷ View online
KV-29FS150
KV-29FS150
13
The following adjustments should be made when a complete realignment
is required or a new picture tube is installed.
is required or a new picture tube is installed.
These adjustments should be performed with rated power supply voltage
unless otherwise noted.
unless otherwise noted.
Set the controls as follows unless otherwise noted:
Picture control
Picture control
NORMAL
Brightness control NORMAL
SECTION 2: SET-UP ADJUSTMENTS
Perform the adjustments in order as follows:
1.
1.
Beam
Landing
2.
Convergence
3.
Focus
4.
Screen
(G2)
5.
White
Balance
Note Test Equipment Required:
1.
Color Bar Pattern Generator
2.
Degausser
3.
DC Power Supply
4.
Digital
Multimeter
2-1. BEAM LANDING
Before beginning adjustment procedure:
1. Feed in the white pattern signal.
2. In order to reduce the geomagnetism on the set’s picture tube, face
it east or west.
Adjustment Procedure
1. Input a raster signal with the pattern generator.
2. Loosen the defl ection yoke (DY) mounting screw, and set the purity
control to the center as shown below:
Purity control
3. Position the VM coil as shown below:
VM coil
G2
G1
G3
Align the edge of
the VM coil with
the edge of the G3 grid.
the VM coil with
the edge of the G3 grid.
G4
4. Set the raster signal of the pattern generator to green.
5. Move the defl ection yoke backward, and adjust with the purity
control so that green is in the center and red and blue are even on
both sides.
both sides.
Red
Blue
Green
6. Move the defl ection yoke forward, and adjust so that the entire
screen becomes green.
7. Switch over the raster signal to red, then blue and confi rm the
condition.
8. When the position of the defl ection yoke is determined, tighten it
with the defl ection yoke mounting screw.
9. If landing at the corner is not right, adjust by using the disk
magnets.
a
b
b
c
c
d
d
a
Purity control
corrects this area.
corrects this area.
Disc magnets or rotatable
disc magnets correct these
areas (a-d).
disc magnets correct these
areas (a-d).
Deflection yoke positioning
corrects these areas.
corrects these areas.
5.
Oscilloscope
6.
Landing
Checker
7.
XCV
Adjuster
KV-29FS150
KV-29FS150
14
2-2. CONVERGENCE
Before starting convergence adjustments:
1 Perform
FOCUS
adjustments.
2. Set Picture mode to “CUSTOM”.
3. Feed in dot pattern.
Vertical Static Convergence
1. Adjust the 4 pole magnet to converge red, green and blue dots in
the center of the screen.
4 pole magnet
RV750
H. STAT
H. STAT
RV1800
G2 (SCREEN)
G2 (SCREEN)
Center dot
R G B
G
R
B
2. Tilt the 4 pole magnet and adjust static convergence to open or
close the 4 pole magnet.
3. When the 4 pole magnet is moved in the direction of arrow
A
and
B
, the red, green, and blue dots move as shown below:
Moved RV750 (H.STAT)
R
R
G
G
B
B
A
A
B
B
B
B
R
G
G
R
B
Horizontal Static Convergence
If the blue dot does not converge with the red and green dots, use the 6
pole magnet to adjust as shown:
pole magnet to adjust as shown:
R G
B
R
G
B
R
G B
R
B
R
G
G
G
B
R
B
6 Pole Magnet
4 pole Magnet
DY pocket
Purity
6 Pole
Magnet
4 Pole
Magnet
Y Separation Axix Correction Magnet
Adjustment
1. Input cross hatch pattern.
2. Set Picture to “MINIMUM”, Brightness to ‘STANDARD”.
3. Adjust the Y separation axis correction magnet on the Neck
Assembly so that the horizontal lines at the top and bottom of the
screen are straight.
screen are straight.
Red
Blue
Red
Blue
KV-29FS150
KV-29FS150
15
Convergence Rough Adjustment
Before performing this adjustment, perform Horizontal and Vertical Static
Convergence Adjustment.
Convergence Adjustment.
Input cross hatch pattern.
a)
TLH
Adjust the horizontal convergence of red and blue dots by inserting
TLH Correction Plate to the DY pocket (left or right).
TLH Correction Plate to the DY pocket (left or right).
b)
YCH
Adjust YCH to balance Y axis.
c)
TLV
Adjust the vertical convergence of red and blue dots.
d)
XCV
Adjust XCV to balance X-axis.
TLV
R B
YCH
R
B
XCV
B
R
TLH
B
R
(VR1)
TLV1 (no need to adjust)
TLV1 (no need to adjust)
DY pocket
DY pocket
TLH Plate
(VR3)
TLV2
(XCV)
(VR2)
YCH
ON DY :
Screen Corner Convergence
Affi x a Piece A (110), Convergence Correct/Permaloy Assy Correction to
the misconverged areas.
the misconverged areas.
b
a
c
d
a-d : screen-corner
misconvergence
misconvergence
a1
b1
c1
d1
a1~d1: Piece A(110), Convergence Correct
or
Permaloy Assy Correction
2-3. FOCUS ADJUSTMENT
FOCUS adjustment should be completed before White Balance
adjustment. (See 3-4. WHITE BALANCE ADJUSTMENT)
1. Receive digital monoscope pattern.
adjustment. (See 3-4. WHITE BALANCE ADJUSTMENT)
1. Receive digital monoscope pattern.
2. Set Picture Mode to “STANDARD”.
3. Adjust focus VR to obtain a just focus at the center of the screen.
4. Change the receiving signal to white pattern and blue back.
5. Confi rm magenta ring is not noticeable. In case magenta ring is
obvious, then adjust FOCUS VR to balance magenta ring and
FOCUS.
FOCUS.
FLYBACK TRANSFORMER (T503)
KV-29FS150
KV-29FS150
16
2-4. SCREEN (G2)
1. Before beginning adustment procedure:
-Set Picture and Brightness to “STANDARD”.
-Set TV to Video mode.
-Set WHBL 016 “RGBB” to 01
2. Connect R, G, B of the CV board cathode to oscilloscope.
3. Adjust Brightness to obtain the cathode value to the value shown
below:
Cathode setting voltage:
170 V
170 V
± 2 (VDC)
4. Adjust SCREEN VR on the FBT until the scanning line disappears.
5. Set WHBL 16 “RGBB” back to 00.
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