DOWNLOAD Sony KV-SW21M60 Service Manual ↓ Size: 4.77 MB | Pages: 60 in PDF or view online for FREE

Model
KV-SW21M60
Pages
60
Size
4.77 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-sw21m60.pdf
Date

Sony KV-SW21M60 Service Manual ▷ View online

– 7 –
KV-SW21M60/M63/M80/M83/N63
   RM-GA002
• 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.
• REMOVING PROCEDURES
Turn up one side of the rubber cap in the direction
indicated by the arrow a.
Using a thumb pull up the rubber cap firmly in the
direction indicated by the arrow b.
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 
c.
• HOW TO HANDLE AN ANODE-CAP
Do not damage the surface of anode-caps with
sharp shaped objects.
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.
Do not turn the foot of rubber over too hard.
The shatter-hook terminal will stick out or damage
the rubber.
A
A
B
B
C
 Anode Button
– 8 –
KV-SW21M60/M63/M80/M83/N63
   RM-GA002
The following adjustments should be made when a complete
realignment is required or a new picture tube is installed.
The controls and switch should be set as follows unless
otherwise noted:
Picture control ......................................................... NORMAL
Brightness control ................................................... NORMAL
Perform the adjustments in order as follows:
1. Beam Landing
2. Convergence
3. Focus
4. G2 (SCREEN)
5. White Balance
Note: Test Equipment Required
1. Pattern Generator
2. Degausser
3. DC Power Supply
4. Digital Multimeter
SECTION 2
SET-UP ADJUSTMENTS
Preparation :
• Feed in the white pattern signal.
• Before starting, degauss the entire screen with the
degausser.
• In order to reduce the geomagnetism on the set's
picture tube, face it east or west.
2-1. BEAM LANDING ADJUSTMENT
1. Input a raster signal with the pattern generator.
2. Loosen the deflection yoke mounting screw, and set the
purity control to the center as shown below.
3. Set the raster signal of the pattern generator to green.
4. Move the deflection yoke (DY) backward and adjust the
purity control so that green is in the center and blue and
red are at the sides evenly.
5. Then move the DY forward and adjust so that the entire
screen becomes green.
6. Now switch over raster signal to red then blue and
confirm the condition.
...................................................................................................................................................................................................................... ...........
5. Oscilloscope
6. Landing Checker
7. XCV Adjuster
Purity control
Red
Blue
Green
7. When the position of the DY is determined, tighten it
with the DY mounting screw.
8. If the beam does not land correctly in all corners of the
screen, use magnet disc to correct it.
2-2. CONVERGENCE ADJUSTMENT
Preparation :
• Before starting, perform FOCUS adjustment.
• Picture mode STANDARD.
• Receive dot/cross hatch pattern.
a) Vertical  Static  Convergence
Purity control
corrects this area.
Disc magnets or rotatable
disc magnets correct these
areas (a-d).
Deflection yoke positioning
corrects these areas.
a
b
b
c
c
d
d
a
Center dot
R    G    B
R
G
B
4 pole magnet
RV750
H. STAT
C/CV Board
– 9 –
KV-SW21M60/M63/M80/M83/N63
   RM-GA002
1. (Moving vertically), adjust the 4 pole magnet to converge
red, green and blue dots in the center of the screen.
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 moves as
shown below:
Moved RV750 (H.STAT)
b) Horizontal Static Convergence
If the blue dots does not converge with the red and green
dots, use the 6 pole magnet to adjust in the manner
described below.
R
R
G
G
B
B
A
B
B
A
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
c) Convergence Rough Adjustment
Preparation :
• Before starting this adjustment, adjust the horizontal
and vertical static convergence.
Input cross hatch pattern.
i)
TLH
Adjust the horizontal convergence of red and blue dots
by inserting TLH Correction Plate to the DY pocket (left
or right).
ii) YCH
Adjust YCH to balance Y axis.
iii) TLV
Adjust the vertical convergence of red and blue dots.
iv) XCV
Adjust XCV to balance X-axis.
d) Screen Corner Convergence
Affix a Piece A (90), Convergence Correct/Permaloy Assy
Correction to the misconverged areas.
TLV
R B
YCH
R
B
XCV
B
R
TLH
B
R
TLV
ON DY:
TLV
XCV
YCH
DY pocket
DY pocket
TLH Plate
XCV
b
a
c
d
a-d : screen-corner
        misconvergence
a1~d1:Piece A (90), Convergence Correct
or
Permaloy Assy Correction
a1
b1
c1
d1
B
R
G
G
R
B
– 10 –
KV-SW21M60/M63/M80/M83/N63
   RM-GA002
2-3. FOCUS ADJUSTMENT
FOCUS adjustment should be completed before W/B
adjustment.
1. Receive digital monoscope pattern.
2. Set Picture Mode to "DYNAMIC".
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. Confirm magenta ring is not noticeable. In case magenta
ring is obvious, then adjust FOCUS VR to balance
magenta ring and FOCUS.
2-4. G2 (SCREEN) ADJUSTMENT
1. Set the following condition:
– Picture and Brightness to "STANDARD".
– TV to Video mode.
– WHBL 016 "RGBB" to 01
2. Connect R, G, B of the C/CV board cathode to
oscilloscope.
3. Adjust Brightness to obtain the cathode value to the
value stated below.
4. Adjust SCREEN VR on the FBT until the scanning line
disappears.
5. Finally set WHBL 016 "RGBB" back to 00.
165 
± 2VDC
2-5. WHITE BALANCE ADJUSTMENT
1. Set to Service Mode.
2. Input white raster signal using signal generator.
3. Set the following condition:
Picture "DYNAMIC", PICT 006 "WTS" to 00.
4. At Highlight condition, select WHBL 03 "GDRV" and 04
"BDRV" with 1 and 4 button of the remote
commander then adjust the data with 3 and 6 button.
5. At Cutoff, select WHBL 000 "BKOR" and 001 "BKOG"
and adjust the data.
6. Perform adjustment at Highlight and Cutoff condition
until it reaches its target.
7. Write data into memory by pressing [MUTING] t -.
8. Finally set PICT 006 "WTS" back to its original data.
SCREEN
FOCUS
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