DOWNLOAD Sony KV-LS212M50 Service Manual ↓ Size: 7.06 MB | Pages: 73 in PDF or view online for FREE

Model
KV-LS212M50
Pages
73
Size
7.06 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-ls212m50.pdf
Date

Sony KV-LS212M50 Service Manual ▷ View online

– 12 –
KV-LS212M50/M61/M81/N60
   RM-GA002
2-15.  Lead Assy, G2 & Focus dressing
2-16.  Conn Assy, 7P, Lead Assy, Earth & Rotational Coil Conn dressing
TVSR (Clause 9.4.7):
1.  Spacing between HV cable and other conductive part's surface is 1mm/kV or more.
2.  Spacing between HV cable's and enclosure with ventilation or the edge where 
 
terminal bracket and rear cover meet: 10 mm or more.
Rear view of Lead Assy, Focus & G2, connected from 
FBT A brd to CV brd. 
Lead Assy, G2
Lead Assy, Focus
Conn. Assy, 5P (200V)
Earth Assy, Coating
Lead Assy, Focus
Lead Assy,
G2
Keep Lead Assy, 
G2 away from 
Heat Sink.
Keep Lead Assy, 
G2 away from 
HV Cable 
(at least 1mm/kV)
Purse Lock Ø5
Use this as a reference to dress 
ECA, Lead Assy, Focus & G2.
Earth Assy,
Coating
Lead Assy, G2
Purse Lock Ø5
Lead Assy, Focus
Dress tight at the portion to 
avoid wire touches rear cover. 
SAFETY OPERATION
Purse Lock Ø5
Conn Assy, 7P
Rotational Coil Conn
Non-rotational Coil 
Rotational Coil
Purse Lock Ø5
Keep Lead Assy, Earth 
away from heat sinks 
Keep Lead Assy, Earth
away  from heat sinks 
Lead Assy, Earth
Lead Assy, Earth
Conn Assy, 7P
Lead Assy, Earth
UL Wire
Connector Assy, 7P
Purse Lock Ø5
Lead Assy, Earth
Connector Assy, 7P
UL Wire
Rotational Coil Conn.
UL Tape
Purse Lock Ø5
UL Wire (1-923-000-81)
DY
90∞
Wire from 
Rotation Coil
Rotation Coil
UL Wire (1-923-000-81)
– 13 –
KV-LS212M50/M61/M81/N60
   RM-GA002
2-17.  HV Lead Assy dressing
2-18.  AC Power Cord Dressing
Place purse lock Ø9 after the exit of DGC Conn from DGC
DGC
Purse Lock Ø9
Black tape
DGC Conn
outlet
180 ± 5 mm
HV Holder Combi
TVSR (Clause 9.4.7):
A)  Spacing between HV cable and conductive part's    
 
surface --> 1mm/kV or more
B)  Spacing between edge of anode cap and conductive 
 
parts --> 0.5mm/kV or more
C)  Spacing between HV cable & enclosure with   
 
ventilation (i.e. Rear Cover side) --> 10mm or more
45°
HV Holder Combi
Purse Lock Ø9
Fix the bigger diameter hook of HV 
Holder Combi on the right side of black 
tape & at horizontal bending of DGC, 
then use purse lock Ø9 to secure HV 
Holder Combi to DGC
B
A
A
A
A
C
SAFETY OPERATION
Dress HV Holder 
Combi with Purse Lock 
Ø9 as shown
HV Holder Combi
CAUTION:
Keep HV cable facing inwards DY to keep HV cable 
away from ventilation side of rear cover --> 10mm or more.
Ensure TVSR 1mm/kV is kept from HV cable to 
DY & other conductive parts
AC Cord Holder
AC Power Cord
Dress AC Power Cord with 
purse lock at rear cover
Purse Lock Ø8
Make sure AC Power Cord is
dressed between bottom cover 
boss and rail guide
– 14 –
KV-LS212M50/M61/M81/N60
   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 3
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.
3-1. 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.
3-2. 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
C/CV Board
– 15 –
KV-LS212M50/M61/M81/N60
   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:
Use 4 poles to converge
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
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