DOWNLOAD Sony KP-43HT20C / KP-53HS30C Service Manual ↓ Size: 9.55 MB | Pages: 127 in PDF or view online for FREE

Model
KP-43HT20C KP-53HS30C
Pages
127
Size
9.55 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kp-43ht20c-kp-53hs30c.pdf
Date

Sony KP-43HT20C / KP-53HS30C Service Manual ▷ View online

– 10 –
KP-43HT20C/53HS30C
RM-Y908
RM-Y908
2-11. 
AD BOARD AND B BOARD REMOVAL
1
   B board
1
   AD board
Main bracket
2-12. 
G BOARD REMOVAL
4
   G board
2
   Bracket G
1
   Claws
1
   Claw
1
   Claw
Main bracket
3
   Four screws
    (+BVTP3x12)
2-10. 
H4 BOARD AND S BOARD REMOVAL
3
   H4 board
2
   L screen holder
6
 Clows
7
 S board
Sensor 
bracket (B)
4  
 Two screws
     (+BVTP 4x12)
1
   Four screws
     (+BVTP 4x12)
5
   Two screws
     (+BVTP 4x12)
Sensor 
bracket (A)
1
   Screws 
     (Screws(4x20), tapping)
2
   Screws 
     (Screws(4x20), tapping)
3
   Beznet assy
2-9. BEZNET ASSY REMOVAL
– 11 –
KP-43HT20C/53HS30C
RM-Y908
RM-Y908
2-15-.  HIGH-VOLTAGE CABLE INSTALLATION AND 
REMOVAL
(1) Removal
1
   Rubber cap
2
   HV cable
     turn 90¡
1
   HV cable
Gutter
Hook
(2) Installation
4
   Four screws
     (Screw (4x20), tapping)
8
   Two screws (+BVTP3
12  Four screws (+BVTP 4x12)
13  Picture tube
Picture tube
10  Deflection yoke
2
   Four screws
  (Screw (4x20),
      tapping)
3
1  
 Four screws
    (Screw (4x20), tapping)
7
   Neck assy
6  
 CR board
9
   V board
5
   Lens
Lens
2-14. PICTURE 
TUBE 
REMOVAL
CAUTION:    Removing the arrow-marked
                     screws is strictly prohibited.
                     If removed, it may cause liquid spill.
2-13.  A BOARD, D BOARD AND U BOARD REMOVAL
6
   D board
6
   A board
2
   Terminal board
5
   Claws
Main bracket
3
   U board
1
   Two screws
    (+BVTP3x12)
4
   Screws
    (+BVTP3x12)
4
   Six screws
    (+BVTP3x12)
1  
 Five screws
    (+BVTP3x12)
– 12 –
KP-43HT20C/53HS30C
RM-Y908
RM-Y908
2-pole magnet
4-pole magnet
Deflection yoke
Anode cap
Centering magnet
3-1.  SCREEN VOLTAGE ADJUSTMENT 
        (COARSE ADJUSTMENT)
1.   Receive the Monoscope signal.
2.   Set 50% BRIGHTNESS and minimum PICTURE.
3.   Turn the red VR on the FOCUS block all the way to the left 
and then gradually turn it to the right until the point where you 
can see the retrace line.
4.   Next gradually turn it to the left to the position where the 
retrace line disappears.
R
G
B
SCREEN
R
G
B
FOCUS
FOCUS block
Fig. 3-1
SECTION 3
SET-UP ADJUSTMENTS
170 ± 0.5V
G2 JIG
TO CG BOARD
TP7201
(200V)
GND
3k
5.6k
5.6k
5.6k
SW
K
GND
pedestal level
All resistors are 3W type
Fig. 3-2
3-2.  SCREEN (G2) ADJUSTMENT
        (FINE ADJUSTMENT)
Fine Mode is recommended to set screen controls to their optimal 
condition.  It is necessary to build the simple jig, illustrated below, 
using 3-watt resistors.  Please note, that if the proper voltage is 
not obtained with their listed values, resistors, then please increase 
or decrease one of the values in the resistor network to obtain the 
correct voltage.
1.   Select VIDEO1 mode without signals.
2.   Connect G2 JIG.
3.   SW on JIG.
4.   Connect an oscilloscope to the TP7101(KR), TP7202(KG) and 
TP7301(KB) of CR board, CG board and CB board.
5.   Adjust  R, G and B screen voltage to 170 ± 0.5V with screen 
VR on the Focus block.
3-3.  DEFLECTION YOKE TILT ADJUSTMENT
1.   Connect the color bar generator monoscope pattern to Video 
1 input.
2.   Cover the both red and blue picture lenses with the lens caps to 
show only the green color.
3.   Loosen the defl ection yoke set screw and align the tilt of the 
Defl ection Yoke so that the bars at the center of the monoscope 
pattern are horizontal.
4.   After aligning the defl ection yoke, fasten it securely to the 
funnel-shaped portion (neck) of the CRT.
Fig. 3-3
3-4. FOCUS LENS ADJUSTMENT
In this adjustment, use the remote commander in the service 
mode.
For details of the usage of the service mode and the 
remote commander, please refer the item 3-9. ELECTRICAL 
ADJUSTMENT BY REMOTE COMMANDER.
1.   Loosen the lens screw.
2.   Cover the both red and blue picture lenses with the lens caps to 
show only the green color.
3.   Turn the green lens to adjust to the optimum focus point with 
the crosshatch signal.
4.   Tighten the lens screw.
5.   Cover the both green and blue picture lenses with the lens caps 
to show only the red color.
6.   Adjust red CRT lens just the same as green.
7.   Cover the both green and red picture lenses with the lens caps 
to show only the blue color.
8. Adjust blue CRT lens just the same as green.
9. After adjusting the items 3-5. Focus VR Adjustment, 3-6. 
2-Pole Magnet Adjustment and 3-7. 4-Pole Magnet Adjust-
ment, adjust again to the optimum focus point.
*:  Every time you press 6, the test signal changes to 
“crosshatch+video signal” - “crossbatch+borderline(black)” 
- “crosshach(black)” - “dots(black)” - off.
Note: Instead of items 2, 5 and 7, you can cut off the unnecessary 
color beams by controlling the service mode CXA2150P-2 0 
RGBS.
Fig. 3-4
Test signal
5.   The tilt of the defl ection yoke for red is aligned  in the mode 
Cover the both green and blue picture lenses with the lens caps 
and the tilt of the defl ection yoke for blue is aligned with in the 
mode Cover the both green and red picture lenses with the lens 
caps is aligned the same as was done for green.
Note: Instead of items 2 and 5, you can cut off the unnecessary 
color beams by controlling the service mode CXA2150P-2 0 
RGBS.
– 13 –
KP-43HT20C/53HS30C
RM-Y908
RM-Y908
3-7.  CENTERING MAGNET ADJUSTMENT
1.   Set the picture mode to “Pro”.
2.   Receive the monoscope signal.
3.   Cover the both red and blue picture lenses with the lens caps to 
show only the green color.
4.   Adjust the green centering magnet to put the center of the 
monoscope signal to the center of the screen.
5.   Adjust the red centering magnet in the same way.
6.   Adjust the blue centering magnet in the same way.
Note: Instead of item 2 you can cut off the unnecessary color 
beams by controlling the service mode 2150P-2 1 RGBS.
3-8.  4-POLE MAGNET ADJUSTMENT
1.   Set the picture mode to“Pro” and picture to MAX.
2.   Receive the Dot signal.
3.   Cover the both red and blue picture lenses with the lens caps to 
show only the green color.
4.   Turn the green focus VR on the focus block to the right and set 
the spot will become smaller.
5.   Adjust the 4-Pole Magnet so that the spot becomes round for 
green and red.
6.   Adjust blue spot to an oval shape X:Y=1:1.4 ~ 1.5.
Note: Instead of item 2 you can cut off the unnecessary color 
beams by controlling the service mode 2150P-2 1 RGBS.
3-9. DEFOCUS ADJUSTMENT (BLUE)
Note: Please adjust the blue dot to be slightly larger than red and 
green dots. This adjustment provides a more pleasing picture 
to the customer.
1.   Select the picture mode to “Pro”.
2.   Receive the Dot signal.
3.   Cover the both red md green picture lenses with the lens caps 
to show only the blue color.
4.   Turn the blue focus VR on the focus block to right to make 
the round dot elipical.
5.  Check fl are with high luminace signal, make sure fl are is 
minimal while dot shape is elipical.
6.   Set generdtor to all white signal and check uniformity.
Note: Instead of item 3 you can cut off the unnecessary color 
beams by controlling the service mode 2150P-2 1 RGBS.
Fig. 3-7
Fig. 3-8
/
x
y
x : y = 1:1.4 
˜
 1.5 (BIue)
x : y = 1:1 (Green, Red)
Use the center dot
3-5. FOCUS VR ADJUSTMENT
1.   Set generator to crosshatch.
2.   Cover the both red and blue picture lenses with the lens caps to 
show only the green color.
3.   Turn the green focus VR on the focus block to adjust to the 
optimum focus point with the crosshatch signal.
4.   Cover the both green and blue picture lenses with the lens caps 
to show only the red color.
5.   Turn the red focus VR on the focus block to adjust to the 
optimum focus point with the crosshatch signal.
6.   Cover the both green and red picture lenses with the lens caps 
to show only the blue color.
7.   Turn the blue focus VR on the focus block to adjust to the 
optimum focus point with the crosshatch signal.
8.   After adjusting the items 3-4. Focus Lens Adjustment, 3-6. 
2-Pole Magnet Adjustment and 3-7. 4-Pole Magnet Adjust-
ment, adjust again to the optimum focus point.
Note: Instead of items 2, 4 and 6, you can cut off the unnecessary 
color beams by controlling the service mode 2150P-2 1 RGBS.
A
B
Lens
Minimize both A and B.
Center of crosshatch
Scanning line visible.
3-6.  2-POLE MAGNET ADJUSTMENT 
1.   Set the picture mode to“Pro” and picture to MAX.
2.   Receive the Dot signal.
3.   Cover the both red and blue picture lenses with the lens caps to 
show only the green color.
4.   Turn the green focus VR on the focus block to the left and set 
to overfocus to enlarge the spot.
5.   Adjust 2-pole magnet so that the bright spot should be cen-
tered.
6.   Align the green focus VR and set for just (precise) focus.
7.   Perform the same alignment for red and blue.
Note: Instead of item 2 you can cut off the unnecessary color 
beams by controlling the service mode 2150P-2 1 RGBS.
Fig. 3-6
Fig. 3-5
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