KP-51HW40, KP-57HW40 (serv.man2) - Sony TV Service Manual (repair manual). Page 2

2-pole magnet

4-pole magnet

Deflection yoke

Anode cap

Centering magnet

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

177.5 

±

 0.5V

G2 JIG

TO CG BOARD

TP7201

(210V)

GND

3k 

3.9k 

5.6k 

6.8k

SW

K

GND

pedestal level

All resistors are 3W type

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 177.5 

±

 0.5V with screen

VR on the Focus block.

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 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.

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

funnel-shaped portion (neck) of the CRT.

5. 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

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 Adjustment,
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 2150P-2 1
RGBS.

Test signal

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.

☛