DOWNLOAD Sony KP-FR43M31 / KP-FR43M91 Service Manual ↓ Size: 10.6 MB | Pages: 127 in PDF or view online for FREE

– 9 –

2

 BH board

1

 T board

 

6

 MG Board

4

 DS board

3

 Two screws

 

(BVTP 3x12

 

Type2 IT-3)

 5

 AD Board

Main bracket section

8

 D board

6

 A board

4

 G1 bracket

3

 Three screws

 

(BVTP 3x12

 

Type2 IT-3)

1

 Two screws

 

(BVTP 3x12

 

Type2 IT-3)

7

 Six screws

 

(BVTP 3x12)

5

 Six screws

 

(BVTP 3x12)

2

 G1 board

Main bracket section

PWB block assy

3

 Picture tube block assy

4

 Two screws

 

(Hexagon head)

 

(4x20)

5

 Three screws

 

(Hexagon head)

 

(4x20)

2

 Three screws

 

(Hexagon head)

 

(4x20)

6

 Two screws

 

(BVTP 4x16)

1

 Two screws

 

(BVTP 4x16)

– 10 –

1

 Rubber cap

2

 HV cable turn 90

1

 Rubber cap

2

 HV cab

Hook

Gutter

(1) Remover

(2) Installation

 

5

 Four screws

 

(BVTP 4x16)

1

 Four screws

 

(BVTP 4x16)

Removing the arrow-marked screw (gold color) is strictly inhibited.
If removed, it may cause liquid spill.

2

 CR board

3

 Neck assy

4

 Deflection yoke

6

 Mechaseal assy (R)

– 11 –

1. Receive the Monoscope signal.
2. Set 50% BRIGHTNESS and minimum PICTURE.
3. Turn the red VR on the focus pack 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.

1. Turn on the power of the set.
2. Select VIDEO1 and make no signal input.
3. Supply DC (177.5 0.5V) from external power supply to

KR. (Fig. 3-2)

4. Turn red of G2 VR clockwise, then retrace line appear.
5. Turn G2 VR counter clockwise and set retrace line just

disappear. (Fig. 3-3)

6. Add DC voltage DC (174 0.5V) to KR.
7. Confirm if retrace can be seen.
8. Adjust green and blue at the same method.

B

R

G

B

R

G

SCREEN

FOCUS

Focus Pack

+

–

Dummy Resister

3k ohm 20W

Power

Supply

Test signal

This adjustment item must be ending the G2 adjustment.

1. Input the HD (1080i/60Hz Black) signal into component

in terminal.

2. Set PICTURE 100%, others are normal,

DRC 1250/60Hz.

3. Adjust with SLN so that the blue reference pulse peak

voltage of B terminal (CN1504) enters into standard.

4. Write the adjustment value in the NVM area of

widezoom mode after the adjustment.

1. Connect VIDEO-1 terminal.
2. Receive video dot hatch pattern.
3. Use lens-cover to red and blue.
4. Adjust electric focus. (roughly)
5. Rotate the green lens and adjust to obtain the best lens

focus.

6. Rotate the green focus volume on the focus pack and

adjust to obtain best electrical focus.

7. If focus is not good, repeat 4 process.
8. Repeat above process for red and blue lenses and

electric focus.

9. Fix lens screw.

V

0.05V

2.15

GND (0V)

BLUE REFERENCE PULSE

(UG board CN1504 B5 B)

Item: DE F2 03 SLN

Lens

A

B

Minimize both A and B.

Scanning line visible.

– 12 –

1. Receive the Monoscope signal.
2. Place the caps on the red and blue lens so that only the

green color.

3. Loosen the deflection yoke setscrew and align the tilt of

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

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

the funnel-shaped portion of the CRT.

5. The tilt of the deflection yoke for red and blue is aligned

the same as was done for green.

1. Receive the Dot signal (1080i/50Hz) from HD/DVD 1

terminal.

2. Place the caps on the red and blue lens so that only the

green color is shown.

3. Turn the green focus volume of focus pack counter-

clock-wise, so that diameter of the dot become large.

4. Adjust the 2-pole magnet, counter-clockwise and

clockwise center of the dot doesn’t move. (Use focus
volume)

5. Center position is changed by 2-pole magnet

adjustment. So, center magnet adjustment and 2-pole
magnet adjustment are needed tracking adjustment.

6. Repeat same adjustment method for red and blue.

1. Turn Green focus volume of focus pack clockwise.
2. By using 4 pole magnets make the spot size round.
3. Repeat for red and blue.
4. Turn focus pack counter-clockwise and “Just Focus” red,

green and blue.

2-Pole Magnet

VM Coil Assy

Centering Magnet

Anode Cap

4-Pole Magnet

Deflection Yoke

Use the center dot

NG

OK

Left-end dot

(BLUE)

Right-end dot

(BLUE)

1. Turn blue focus volume of fucus pack counter-clockwise,

so that diameter of the dot becomes large, and can see
bright core position.

2. Pay attentio to left side dot of the screen. (Fig. 3-10)
3. Adjustment 2 pole magnet, so that bright core position of

dot become center position of dot. (Fig. 3-11)

1. Receive 1080i/50Hz dot signal from HD/DVD 1 terminal.
2. Set “VIVID” and PICTURE 100%, other 50% and white

balance “COOL” (VM OFF), PIOF: 0.

3. Blue 4 pole: make round in the center of screen.
4. Confirm that center dot focus is adjusted in focus.

(Fig. 3-12a)

5. Adjust blue electrical focus to make the left side spot

nearly round by minimizing width and height. (Slight
overfocus is OK) (Fig. 3-12b)

6. Confirm that the green to blue spot size is within spec.

Blue center dot height shall be   1.2 times the g reen dot
height.

7. Return data to original condition.

NG

NG

OK

Use the center dot

Bright Core

Blue 2 Pole magnet

Adjustment Position

Blue 2 Defocus
Adjustment Position 
just focus

OK