DOWNLOAD Sony KV-SR253M53 Service Manual ↓ Size: 11.33 MB | Pages: 77 in PDF or view online for FREE

Model
KV-SR253M53
Pages
77
Size
11.33 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-sr253m53.pdf
Date

Sony KV-SR253M53 Service Manual ▷ View online

– 12 –
KV-SR253M53
RM-GA002
2-10 i) Connector Assy wire dressing
 
2-10 ii) Connector Assy wire dressing
 
Dress Conn Assy, 7P RGB; Conn Assy, 5P
Dress DY connector; Conn Assy, 4P 200V; 
Conn Assy 4P VM and Conn Ass, 6P using 
purse lock 
∅ 9 as shown.
Front In and Lead Assy, Earth using purse lock 
∅ 9.  
Keep wires away from heatsinks and high-temperature parts.
Note: Make sure DY connector is
inserted securely.-->prevent it from
coming out.
  
Purse lock 
∅ 9 
Lead Assy, Earth
Conn Assy, 5P Front In 
Purse lock 
∅ 
Conn Assy, 7P RGB
CAUTION
Keep Conn Assy, 5P Front In wire in an
upward path from CN9201 to where it is
dressed with purse lock 
∅ 9. This is to keep 
it away from deflection area.
 
DY
 Connector
Conn Assy
6P
Conn Assy
4P 
200V
Purse lock 
∅ 9 
Conn Assy
4P
 VM
Conn Assy, 6P
DY 
Conn
Conn 
Assy, 4P 
Purse lock 
∅ 9  
Conn 
Assy, 
4P 200V
Keep Conn Assy, 5P Front In wire in an
upward path from CN9201 to where it is
dressed with purse lock 
∅ 9. This is to keep
it away from deflection area.
– 13 –
KV-SR253M53
RM-GA002
2-11 Overall view of rotation coil conn dressing 
2-12 Overall view of lead Assy, G2; Lead Assy,
        Focus and Rotation Coil Conn Dressing
Avoid any stress on Lead Assy, G2; Lead Assy, Focus
and terminal at W7001.
Install Rotation Coil as shown.
1) Coil positioned in clockwise direction.
2) Wire is at 3 o'clock position. 
Dress Lead Assy, Speaker to center position of Rotation coil using purse lock 
∅ 9 as shown. 
Make sure Earth Assy, Couting wire is above Lead Assy, Speaker.
This is to keep Lead Assy, Speaker away from Deflection Yoke.
Rotation coil conn is
 
dressed outside and below
 
Earth Assy, Coating wires.
Earth Assy,
Coating
wires
Wire from Rotation
DY
Dress Rotation Coil
connector together
with Lead Assy,
G2; Lead Assy
Focus and Conn
Assy, 4P 200V
using pin, wire
A707
 
 
 
 
Lead Assy, G2
W7001
CN1802
 
Conn Assy, 
4P 200V
Lead Assy,
Focus
Keep wire
away
from
R781
 
A715
A713
CAUTION
Prevent wires
from touching
rear cover or any
enclosures by
turning them
away from it -->
avoid rattle
sound.
 
 
CAUTION
Prevent wires from
touching rear cover or
any enclosures by
turning them away
from it --> avoid rattled
 
2-13 Dress Lead Assy, Speaker to Rotation Coil using purse lock 
∅ 9
 
Rotation 
coil
Earth Assy, Coating
wire is above
Lead Assy,
Speaker
Dress Lead Assy,
Speaker to center
position of Rotation Coil
using purse lock 
∅ 9 
 
Earth Assy,
Coating wire
Lead Assy,
Speaker
Purse lock 
∅ 
Lead Assy, Speaker
(RED+BLK)
Rotation Coil 
DGC connector
DG
DGC
right spk
Khoùa 1
1
Degauss
Rotation Coil
DY
Attach purse lock 
∅ 9 
here
 
Lead Assy,
Speaker
Rotation 
Coil 
Keep wire
away
from R781
and heatsinks
A713, A715.
Rotation Coil
– 14 –
KV-SR253M53
RM-GA002
Dress cap assy, High voltage with holder, HV cable combi
as shown. 
Install Cap Assy, High voltage as shown.
Caution: 1) Make sure the specified position is being followed.
              2) Position the Cap Assy, High Voltage in the inner  
                  ring of the Holder, HV cable combi (see diagram).
Install AC cord holder to AC power cord at specified 
position as shown.
2-14 Cap Assy, High voltage installation
TVSR Requirement:
1. Keep HV cable away from conductive parts
    (distance of 1mm/kV). 
2. Keep spacing between edge of anode cap & conductive parts
    (distance of 0.5mm/kV).
3. Keep spacing between edge of anode cap & non-conductive 
    parts (distance of at least 5mm or more).
2-15 HV cap assy wire dressing
 
Top view 
DGC
Inner Ring
Rotation coil
Side hook
Large hook
Purse lock 
φ 9 
250 ± 5 mm 
Holder, HV cable 
HV cap
Dress Holder, HV Cable Combi to
Cap Assy, High Voltage and attach
side hook to rotation coil at 10
o'clock position. Then, attach large
hook to DGC and dress with
purse lock 
φ 9. 
90∞
10 o'clock
Purse lock 
φ 9 
 
Keep distance of HV
cable from other
wires, conductive
parts and
CRT's carbon area
Side hook
Min. distance =
1mm/kV
Large hook
P-P taping 
of DGC
 
Min. distance =
1mm/kV
Dress using Purse lock 
φ 
CRT's carbon area
2-16 AC Power Cord Wire Dressing 
 
 360  + 5 mm 
Attach AC cord
onto holder and
insert to bottom
cover
 
Hook
TVSR requirement:
 1. Spacing between HV cable and other conductive partís 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. 
CAUTION:
Please ensure that the portion of HV cable above  
the Holder, HV Cable Combi is kept away from CRT's carbon area.
Also, portion of HV cable below the Holder, HV Cable Combi needs
 to be kept away from conductive parts (DGC, rotation coil, CRT's
carbon area, speaker wire, etc).
Ensure forming of HV cable is OK and no unnatural curve occurs.
Do not twist or loop the cable.
Keep distance
of 0.5mm/kV
Keep distance of
 
1mm/kV
DGC
HV
90∞
DGC Band
Rotation coil
>5mm
CRT's carbon area
Dress Holder, HV
Cable Combi to
the right of P-P
taping of DGC.
Dress purse lock
 
φ 9 to the right of
large hook on
Holder, HV Cable
Combi.
– 15 –
KV-SR253M53
   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
5. Oscilloscope
2. Degausser
6. Landing Checker
3. DC Power Supply
7. XCV Adjuster
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. Loose the deflection yoke(DY) mounting screw, and set
the purity control to the center as shown below:-
3. Position Neck Assy as shown below:-
4. Set the raster signal of the pattern generator to green.
5. Move the DY backward and adjust the purity control so
that green is in the center and blue and red are at the
sides evenly.
Red
Blue
Green
a
b
b
c
c
d
d
a
Purity control
corrects this area.
Disc magnets or rotatable
disc magnets correct these
areas (a-d).
Deflection yoke positioning
corrects these areas.
Purity control
Neck assy
G2
G1
G3
Align the edge of
the neck assy with
the edge of the G2 grid.
......................................................................................................................................................................................................................
6. Then move the DY forward and adjust so that the entire
screen becomes green.
7. Now switch over raster signal to red then blue and
confirm the condition.
8. When the position of the DY is determined, tighten it with
the DY mounting screw.
9. If the beam does not land correctly in all the corners of
the screen, use magnet disc to correct it.
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