DOWNLOAD Sony KV-HV212M50 Service Manual ↓ Size: 10.98 MB | Pages: 67 in PDF or view online for FREE

Model
KV-HV212M50
Pages
67
Size
10.98 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-hv212m50.pdf
Date

Sony KV-HV212M50 Service Manual ▷ View online

– 12 –
KV-HV212M50/M53
   RM-GA002
2-12.  DY Conn & Conn Assy, 5P (200V) Dressing
2-13.  Lead Assy, G2 & Focus Dressing
DY Conn & Conn Assy, 5P (200V) dressing
1) Dress DY Conn along Conn Assy, 5P (200V) as shown. 
2) Dress DY Conn and Conn Assy, 5P (200V) with Purse Lock Ø5.
     Note : Keep DY Conn & Conn Assy, 5P away from FBT area by a distance of 10mm or more.
DY Conn goes underneath of 
Earth Assy, Coating and Conn
Assy, 5P (200V)
1
2
DY Conn goes above Conn Assy, 5P (200V).
DY Conn
Conn Assy, 5P (200V)
Earth Assy, Coating
Purse Lock Ø5
DY Conn
Conn Assy, 5P
 (200V)
Use heat sink height to
estimate purse lock location
Purse Lock Ø5
≥ 10mm
3
Dress DY Conn and Conn Assy, 5P
(200V) with Purse Lock Ø5.
TVSR Requirement :
All wires must be kept away from
FBT area by a distance of 10mm or
more
Dress Earth Assy, Coating, Lead Assy, G2 & Focus with purse lock Purse Lock Ø5. as shown
Note : Keep Lead Assy, G2 away from HV Cable (min 1mm/kV)
          Ensure Lead Assy, G2 is kept away from heat sinks
Purse lock dia.5
FBT 
(G2)
CN704
(C)
ECA
FBT 
(Focus) 
CRT 
SOCKET
CN705
(C)
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)
Dress tight at the portion to avoid
wire touches rear cover .
Rear view of Lead Assy, Focus & G2, connected
from FBT A brd to C brd.
Lead Assy, G2
Lead Assy, Focus
Conn. Assy, 5P (200v)
Earth Assy, Coating
TVSR requirement :
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.
SAFETY
OPERATION
Purse Lock, dia.5
Use this as a reference to dress
ECA, Lead Assy, Focus & G2.
Make sure DY Conn is on the right
side of Earth Assy, Coating
– 13 –
KV-HV212M50/M53
   RM-GA002
2-14.  Conn Assy, 7P, UL Wire (1-923-000-81), Lead Assy, Earth & Rotational Coil Conn Dressing
2-15.  HV Cap Assy Dressing
Dress Conn Assy, 7P, UL Wire (1-923-000-81), Lead Assy, Earth, 
Dress Conn Assy, 7P, UL Wire (1-923-000-81), Lead Assy, Earth, 
Conn Assy, 3P(1-900-703-83), Rotational Coil Conn with purse lock, Ø9 as shown.
and Rotational Coil Conn with purse lock, Ø5 as shown.
Note : Keep Lead Assy, Earth away from heat sinks. 
Note : Keep Lead Assy, Earth away from heat sinks. 
Purse Lock Ø9
Lead Assy,
Earth
Conn Assy, 7P
UL Wire (1-923-000-81)
Conn Assy,
3P
Rotational Coil
Conn
3D Models
Non 3D Models
Rotation Coil
DY
90
Purse Lock Ø5
Keep Lead Assy, Earth away
from heat sinks
Conn Assy, 7P
Rotational
Coil Conn
Lead Assy, Earth
A:  Conn Assy, 7P
B:  Lead Assy, Earth
C:  UL Wire (1-923-000-81)
D: Rotational Coil Conn
E: Conn Assy, 3P (woofer)
A      B    C   D  E
Rotational Coil & 3D Models
Purse Lock Ø9
A:  Conn Assy, 7P
B:  Lead Assy, Earth
C:  UL Wire (1-923-000-81)
D: Rotational Coil Conn
A    B     C    D 
Rotational Coil & Non-3D Models
Purse Lock Ø5
1) Dress HV cap assy with HV Holder as shown
     Note: Make sure the specified position is being followed.
2) Dress HV holder at DGC with purse lock, Ø9 as shown
3) Using Yellow line (CRT Carbon line) as a reference to dress purse lock, Ø9.
CAUTION:
OK
NG
Ensure HV Holder is beside
DGC to keep further distance 
from HV Cable
distance > 1mm/kV
distance < 1mm/kV
180 ± 5 mm
HV Cable Holder
Place purse lock Ø9 after the exit of DGC Conn from DGC
DGC
Purse Lock Ø9
Black tape
DGC Conn outlet
Gate (2 positions)
of HV holder
Dress HV Cable at inner ring
SAFETY
OPERATION
45º
Min. distance = 1mm/kV
Min. distance = 1mm/kV
Min. distance =
0.5mm/kV
CRT Carbon
Area
TVSR requirement:
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.
3. Spacing between edge of anode cap and conductive parts is 0.5mm/kV or more
Keep wires away
from heat sinks
UL Wire (1-923-000-81)
Wire from
Rotation Coil
– 14 –
KV-HV212M50/M53
   RM-GA002
2-16.  AC Power Cord Dressing
PWB Bracket hook
Dress AC Power Cord at PWB Bracket hook as shown.
AC Power Cord
Terminal Bracket
AC Cord Holder
Dress AC Cord Holder at the terminal bracket.
– 15 –
KV-HV212M50/M53
   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
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