DOWNLOAD Sony KP-48V85 / KP-53V85 / KP-61V85 Service Manual ↓ Size: 10.89 MB | Pages: 105 in PDF or view online for FREE

– 37 –

1 Nineteen screws(KP-53V85) 
     Twenty three screws 
     (KP-61V85)
     Twenty four screws (KP-48V85)
     (Screw(4x20), tapping)

2 Mirror cover

1 Five screws (KP-53V85/61V85)
     Three screws (KP-48V85)
    (Screws(4x20), tapping)

2 Fourteen screws (KP-61V85)
     Fifteen screws (KP-53V85)
     Twelbe screws (KP-48V85)
     (Screws(4x20), tapping)

3 Beznet assy

3 HC board

2 L screen holder

6 Clows

7 S board

Sensor 
bracket (B)

4 Two screws
    (+BVTP 4x12)

1 Two screws
    (+BVTP 4x12)

5 Two screws
    (+BVTP 4x12)

Sensor 
bracket (A)

2 Seven screws
    (+BVTP 3x12)

3 Terminal board

4 U board

1 Two screws
    (Screws (4x20), tapping)

– 38 –

4 Two screws
    (+BVTP 3x12)

1 Eight screws
    (+BVTP 3x12)

3 G board

6 A board

5 Claw

2 Claws

Main bracket

4 Four screws
     (Screw(4x20), tapping)

!º Four screws
    (+BVTP 4x12)

!¡ Picture tube

Picture tube

8 Deflection yoke

9 Tension
     spring*

2 Four screws
    (Screw(4x20), tapping)

3

1 Four screws
    (Screw(4x20), tapping)

7 Neck assy

6 CR board

5 Lens

Lens

* 53V85/61V85 only

CAUTION: Removing the arrow-marked

screws is strictly prohibited.
If removed, it may cause liquid spill.

(1) Removal

1 Rubber cap

2 HV cable
   turn 90

°

1 HV cable

Gutter

Hook

(2) Installation

– 39 –

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

175 

±

 2V

G2 JIG

200V

GND

3.3k

5.6k

5.6k

5.6k

SW

K

GND

pedestal level

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 TP701(KR), TP732(KG) and

TP761(KB) of CR board, CG board and CB board.

5. Adjust  R, G and B screen voltage to 170-173V with screen

VR on the Focus block.

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. Set to the service mode.
3. Receive the all-white signal.
4. Cover the both red and blue picture lenses with the lens caps

to show only the green color.

5. Set to PJE, and press 6 to display the test signal (crosshatch)“

on the screen.

6. Turn the green lens to adjust to the optimum focus point with

the test signal.

7. Tighten the lens screw.
8. Cover the both green and blue picture lenses with the lens caps

to show only the red color.

9. Set to PJE, and press 6 to display the test signal (crosshatch)“

on the screen.

10. Adjust red CRT lens just the same as green.
11. Cover the both green and red picture lenses with the lens caps

to show only the blue color.

12. Set to PJE, and press 6 to display the test signal (crosshatch)“

on the screen.

13. Adjust blue CRT lens just the same as green.
14. After adjusting the items 3-5. Focus VR Adjustment, 3-6. 2-

Pole Magnet Adjustment and 3-7. 4-Pole Magnet Adjustment,
adjust again to the optimum focus point.

*: Every time you press 6, the test signal changes to

“crosshatch+video signal” - “dots+video signal” -
“crosshach(black)” - “dots(black)” - off.

Note: Instead of items 4, 8 and 11, you can cut off the unnecessary

color beams by controlling the service mode VPNT 28 RON,
29 GON, and 30 BON.

Test signal

1. Receive the Monoscope signal.
2. Set in service mode.
3. Cover the both red and blue picture lenses with the lens caps

to show only the green color.

4. Loosen the deflection yoke set screw and align the tilt of the

Deflection Yoke so that the bars at the center of the
monoscope pattern are horizontal.

5. After aligning the deflection yoke, fasten it securely to the

funnel-shaped portion (neck) of the CRT.

6. The tilt of the deflection 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 deflection yoke for blue is aligned with in

2-pole magnet

4-pole magnet

Deflection yoke

Anode cap

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 3 and 6, you can cut off the unnecessary

color beams by controlling the service mode VPNT 28 RON,
29 GON, and 30 BON.

– 40 –

1. Receive the Dot signal.
2. Set in service mode.
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 underfocus to enlarge the spot.

5. Now align the 4-Pole Magnet so that the enlarged spot

becomes a perfect circle for green and red.

6. Perform the same alignment for 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 video menu and set the mode to “VIVID” mode.
2. Set to the service mode.
3. Change TV mode to the video input mode.
4. Set to PJE, and press 6 to display the test signal (dots) on the

screen.

5. Turn the blue focus VR on the focus block to adjust to the

diameter of the dots as shown in the figure below.

1. Receive the Dot signal.
2. Set in service mode.
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 to overfocus to enlarge the spot.

5. Now align the 2-Pole Magnet so that the enlarged spot is in

the center of the Just Focus spot.

6. Align the green focus VR and set for just (precise) focus.
7. Perform the same alignment for red.

Use the center dot

/

x

y

x : y = 1:1.5 (BIue)
x : y = 1:1 (Green, Red)

Use the center dot

Lmm Max

Inch

L

48"

7

53"

8

61"

9

1. Set to the service mode.
2. Receive the all-white signal.
3. Cover the both red and blue picture lenses with the lens caps

to show only the green color.

4. Set to PJE, and press 6 to display the test signal (crosshatch)

on the screen.

5. Turn the green focus VR on the focus block to adjust to the

optimum focus point with the test signal.

6. Cover the both green and blue picture lenses with the lens caps

to show only the red color.

7. Set to PJE, and press 6 to display the test signal (crosshatch)

on the screen.

8. Turn the red focus VR on the focus block to adjust to the

optimum focus point with the test signal.

9. Cover the both green and red picture lenses with the lens caps

to show only the blue color.

10. Set to PJE, and press 6 to display the test signal (crosshatch)

on the screen.

11. Turn the blue focus VR on the focus block to adjust to the

optimum focus point with the test signal.

12. After adjusting the items 3-4. Focus Lens Adjustment, 3-6. 2-

Pole Magnet Adjustment and 3-7. 4-Pole Magnet Adjustment,
adjust again to the optimum focus point.

Note: Instead of items 3, 6 and 9, you can cut off the unnecessary

color beams by controlling the service mode VPNT 28 RON,
29 GON, and 30 BON.

A

B

Lens

Minimize both A and B.

Center of crosshatch

Scanning line visible.