Sony KV-PG14N70 Service Manual ▷ View online
–
12
–
KV
-PG14N70
-PG14N70
RM-915
•REMOVAL OF ANODE-CAP
NOTE : After removing the anode, short circuit the anode of the picture tube and
the anode cap to the metal chassis, CRT shield or carbon paint on the
CRT.
CRT.
•REMOVING PROCEDURES
1 Do not damage the surface of anode-caps with sharp shaped objects.
2 Do not press the rubber too hard so as not to damage the inside of anode-cap.
2 Do not press the rubber too hard so as not to damage the inside of anode-cap.
A metal fitting called the shatter-hook terminal is built into the rubber.
3 Do not turn the foot of rubber over too hard.
The shatter-hook terminal will stick out or damage the rubber.
• HOW TO HANDLE AN ANODE-CAP
3 When one side of the rubber cap is separated from the anode button, the anode-cap
can be removed by turning up the rubber cap and pulling it up in the direction of the
arrow
arrow
c.
2 Using a thumb pull up the rubber cap firmly in the direction indicated by the arrow b.
1 Turn up one side of the rubber cap in the direction indicated by the arrow a.
a
a
b
b
Anode button
c
– 13 –
KV-PG14N70
RM-915
The following adjustments should be made when a complete
realignment is required or a new picture tube is installed.
These adjustments should be performed with rated power
supply voltage unless otherwise noted.
Controls and switches should be set as follows unless otherwise
noted:
PICTURE control ........................................................... normal
BRIGHTNESS control ................................................... normal
Perform the adjustments in the following order :
1. Beam Landing
2. Convergence
3. Focus
4. White Balance
Note : Test Equipment Required.
1. Pattern Generator
2. Degausser
3. Oscilloscope
SECTION 3
SET-UP ADJUSTMENTS
................................................................................................................................................................................................................................
normal
Preparation :
In order to reduce the influence of geomagnetism on the
set's picture tube, face it east or west.
Switch on the set's power and degauss with the degausser.
set's picture tube, face it east or west.
Switch on the set's power and degauss with the degausser.
3-1. BEAM LANDING
1. Input a white signal with the pattern generator.
Contrast
Brightness
Brightness
2. Set the pattern generator raster signal to a green raster.
3. Move the deflection yoke to the rear and adjust with the
3. Move the deflection yoke to the rear and adjust with the
purity control so that the green is at the center and the blue
and the red take up equally sized areas on each side.
(See Figures 3-1 through 3-4.)
and the red take up equally sized areas on each side.
(See Figures 3-1 through 3-4.)
4. Move the deflection yoke forward and adjust so that the
entire screen is green. (See Figure 3-1.)
5. Switch the raster signal to blue, then to red and verify the
condition.
6. When the position of the deflection yoke has been decided,
fasten the deflection yoke with the screws and DY spacers.
7. If the beam does not land correctly in all the corners, use a
magnet to adjust it.
(See Figure 3-4.)
(See Figure 3-4.)
}
Fig. 3-1
Fig. 3-4
Fig. 3-3
Fig. 3-2
Purity control
Red
Blue
Green
Purity control
corrects this area.
corrects this area.
Disk magnets or rotatable
disk magnets correct these
areas (a-d).
disk magnets correct these
areas (a-d).
Deflection yoke positioning
corrects these areas.
corrects these areas.
a
b
c
d
b
c
d
a
– 14 –
KV-PG14N70
RM-915
3-2. CONVERGENCE
Preparation :
•
•
Before starting this adjustment, adjust the focus, horizontal
size and vertical size.
size and vertical size.
•
Receive dot/hatch signal.
•
Pic mode: Soft.
(1)
Horizontal and Vertical Static Convergence
1. (Moving vertically), adjust the V.STAT magnet so that the
red, green and blue dots are on top of each other at the
center of the screen.
center of the screen.
2. (Moving horizontally), adjust the H.STAT VR control so
that the red, green and blue dots are on top of each other at
the center of the screen.
the center of the screen.
3. If the H.STAT variable resistor cannot bring the red, green
and blue dots together at the center of the screen, adjust the
horizontal convergence with the H.STAT variable resistor
and the V.STAT magnet in the manner given below.
(In this case, the H.STAT variable resistor and the V.STAT
magnet influence each other, so be sure to perform adjust-
ments while tracking.)
horizontal convergence with the H.STAT variable resistor
and the V.STAT magnet in the manner given below.
(In this case, the H.STAT variable resistor and the V.STAT
magnet influence each other, so be sure to perform adjust-
ments while tracking.)
1
3
Center dot
R G B
R
G
B
H. STAT VR
V. STAT
Magnet
RV702
H. STAT
C Board
•
Operation of V. Stat magnet
If the V. Stat magnet is moved in the "a" and "b" arrows, the
red, green and blue dots move as shown below.
If the V. Stat magnet is moved in the "a" and "b" arrows, the
red, green and blue dots move as shown below.
BMC (Hexapole)
V.STAT
DY pocket
Purity
V.STAT
BMC
Purity
2
R
R
G
G
B
B
a
a
b
b
b
R
R
G
G
B
B
a
b
a
b
R
R
G
G
B
B
a
a
b
b
b
4
BMC (Hexapole) Magnet.
If the red, green and blue dots are not balanced or aligned,
then use the BMC magnet to adjust in the manner described
below.
If the red, green and blue dots are not balanced or aligned,
then use the BMC magnet to adjust in the manner described
below.
R G
B
R
G
B
R
G B
R
B
R
G
G
G
B
R
B
– 15 –
KV-PG14N70
RM-915
TLH
Insert
TLH
Correction Plate to DY Pocket (Left or Right)
YCH
Rotate
YCH
VOL on DY
TLV
Rotate
TLV
VOL ON DY
XCV
Rotate
XCV
Adj core on DY
ON DY:
(2) Dynamic Convergence Adjustment
Preparation:
Before starting this adjustment, adjust the horizontal static
convergence and the vertical static convergence
R B
R B
TLH
TLV
YCH
XCV
B
R
R
B
YCH
TLV
DY pocket
DY pocket
XCV
Click on the first or last page to see other KV-PG14N70 service manuals if exist.