DOWNLOAD Sony KV-DA34M50 Service Manual ↓ Size: 18.89 MB | Pages: 127 in PDF or view online for FREE

– 13 –

Preparation :
•

Before starting this adjustment, adjust the focus, horizontal
size and vertical size.

•

Receive cross hatch/dot pattern and set picture mode to
"STANDARD".

1. (Moving horizontally), adjust the H.STAT control so that the

red, green and blue dots are on top of each other at the center
of the screen.

2. (Moving vertically), adjust the V.STAT magnet so that the

red, green and blue dots are on top of each other at the center
of the screen.

3. Adjust Horizontal Trapezoid with “DEF1 005 HTPZ” in

Service Mode to make H-Trapezoid distortion best.

4. If the H.STAT variable resistor cannot bring the red, green

and blue dots together at the center of the screen, adjust the
horizontal convergence with the H.STAT variable resistor and
the V.STAT magnet in the manner given below.
(In this case, the H.STAT variable resistor and the V.STAT
magnet influence each other, so be sure to perform
adjustments while tracking.)

1

V. STAT

2

H. STAT VR

3

Center dot

R    G    B

R

G

B

H. STAT VR

V. STAT

Magnet

RV702

H. STAT

Y magnet

C Board

R

R

G

G

B

B

a

a

b

b

b

R

R

G

G

B

B

a

b

R

R

G

G

B

B

a

a

b

b

b

V.STAT

Purity

BMC (Hexapole)

– 14 –

(2) Dynamic Convergence Adjustment
Preparation:
•

Before starting this adjustment, adjust the horizontal static
convergence and the vertical static convergence.

•

Set the PICTURE and BRIGHTNESS to normal.

1

Receive the dot/hatch pattern signal and adjust picture quality
by the menu.

2

Correct horizontal mis-convergence of red and blue of both
sides on the X axis.
When red is outside insert TLH convergence piece to right
side (TLH +) views from DY neck. And when blue is outside,
insert it to left side (TLH –) and take both sides.

To able to become balance of XCV on the X axis well.

Correct the vertical mis-convergence of red and blue of
vertically sides on the Y axis.

Adjust horizontal mis-convergence of red and blue of
vertically sides on the Y axis. Mentioned above steps 2 to 4
are adjusting respectively perform minuteness tracking.

4

BMC (Hexapole) Magnet.
If the red, green and blue dots are not balanced or aligned,
then use the BMC magnet to adjust in the manner described
below.

5

Y separation axis correction magnet adjustment.

1. Receive the cross-hatch signal and adjust [PICTURE] to

[MIN] and [BRIGHTNESS] to [STANDARD].

2. Adjust the Y separation axis correction magnet on the neck

assembly so that the horizontal lines at the top and bottom of
the screen are straight.

Note
1. The Red and Blue magnets should be equally far from the

horizontal center line.

2. Do not separate the Red and Blue magnets too far.

(Less than 8 mm)

R G

B

R

G

B

R

G B

R

B

R

G

G

G

B

R

B

Neck assy

Red

Blue

Neck assy

Red

Blue

R

(B)

B

(R)

B

(R)

R

(B)

b

a

c

d

a-d : screen-corner
        misconvergence

DY pocket

TLH Plate

(VR1)
TLV1 (no need to adjust)

(XCV)

(VR2)

YCH

(VR3)

TLV2

– 15 –

Note
Focus adjustment should be completed before W/B adjustment.

1. Receive digital monoscope pattern.
2. Set Picture mode to "STANDARD".
3. Adjust FOCUS VR so that the center of the screen becomes

just focus.

4. Change the receiving signal to white pattern and blue back.
5. Confirm MAGENTA RING is not noticeable. In case

MAGENTA RING is obvious, adjust FOCUS VR to balance
between MAGENTA RING and FOCUS adjustment.

1. Receive dot/hatch pattern DRC-MF, DRC1250, DYNAMIC.
2. Turn FOCUS VR fully counter-clockwise.
3. Confirm the dot shape at the screen center. (Fig. 5-4)
4. Resume FOCUS VR.

Note
In case of turning NECK ASSY, loosen the screw 3 turns. Do not
move the position.

 OK

 Turn NECK ASSY clockwise.

 Turn NECK ASSY counter clockwise.

1. G2 (SCREEN) ADJUSTMENT
1. Set the PICTURE and BRIGHTNESS to normal.
2. Put to any signal mode.
3. Connect R, G and B of the C board cathode to the

oscilloscope.

4. Adjust BRIGHTNESS to obtain the cathode voltage to the

value below.

5. Whilst watching the picture, adjust the screen VR [RV9002]

located on the Flyback Transformer to the point just before
the retrace lines disappear (to the point before cut-off).

1. Set Picture to Dynamic mode.
2. Go to Service mode and adjust SADJ "COL" from 60 to 00.
3. Fix WHBL "RDRV" to 41.
4. Fix WHBL "RCUT" to 31.
5. Adjust "GDRV" and "BDRV" for highlight.
6. Adjust "GCUT" and "BCUT" for cut-off.

(Cut-off Condition)

1. Set Picture to Dynamic mode.
2. Adjust SADJ "COL" from 00 to 100.
3. Adjust "CBOF" and "CROF" for cut-off.

Once the above adjustments have been set, change back the
SADJ "COL" data to 60 (original condition).

0 V

170v ± 2 (VDC)

a

b

c

d

Permalloy assembly

– 16 –

Service adjustments to this model can be performed using the supplied remote commander RM-W105.

With the unit on standby

This operation sequence puts the unit into service mode.
The screen display is as below:

Set the standby condition (Press [POWER] button on the commander), then press [POWER] button again, hereupon it becomes TV
mode.

1. Set to Service Mode.
2. Press 1 (UP) and 4 (DOWN), to select the adjustment item.
3. Change item by pressing 3, 6.
4. Press [MUTING] button to indicate WRITE on the screen.
5. Press - button to write into memory.

Item no.

Service data

NVM

Service

Field

Channel no./

Category

in decimal

Item name

in decimal

NG

Command

Frequency

Video Input Name

WHBL

000

BKOR

000

x

SERVICE

50

S VIDEO 1

Software

Service data

Reserved

Power On Time

Release ID

Version

in binary

for factory

Color System

(decimal)

CGA01

0.16M

0000 0000

FF FF

NTSC3

00100

S_ _

: for Sony

A_ _

: for AIWA

L_ _

: BX1L Full

B_ _

: BX1L Basic

D_ _

: DVD Combo

C_ _

: CX1

Z_ _

: Sound Special

_ _ _01 : Serial no. of the M/P release for each destination
_ _ _10 ~: use for FY04
_ _ _SB : Sub Hercules

  

t [DISPLAY] t 5 t [VOL $+% ] t [POWER]

1, 4

Select the adjustment item.

r

3, 6

Raise/lower the data value.

r

[MUTING]

Writes.

r

-

Executes the writing.

For BP Board version; and PF Engine Version;
Category and release ID will be different. The rest
are the same.

BP Board version

item no.

item

Category

in decimal

name

SUBP

000

10XH

software

release ID

version

CBP00

0.06

PF Engine version

item no.

item

Category

in decimal

name

9090

000

software

release ID

version

PF0018M