DOWNLOAD Sony KV-XA29K90 Service Manual ↓ Size: 5.65 MB | Pages: 85 in PDF or view online for FREE

– 29 –

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)

•

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

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.

R G

B

R

G

B

R

G B

R

B

R

G

G

G

B

R

B

Blue

Red

VM1 board

Blue

Red

VM1 board

Neck assy

Neck assy

R B

R B

TLH

TLV

YCH

XCV

B

R

R

B

– 30 –

Fix a Permalloy assy corresponding to the
misconverged areas.

FOCUS adjustment should be completed before W/B adjustment.
1. Receive digital monoscope pattern.
2. Set "Picture Mode" to "DYNAMIC".
3. Adjust focus VR so that the center of screen becomes

just  focus.

4. Change the receiving signal to white pattern and blue back.
5. Confirm magenta ring is not noticeable. Incase magenta is

very obvious, adjust focus VR to take balance of magenta
ring and focus.

TLV

Rotate

TLV-2 VOL (29”, 34”) on DY

Rotate

TLV

VOL (25”) on DY

XCV

Rotate

XCV

Adj core on DY

YCH

Rotate

YCH

VOL on DY

TLH

Insert

TLH

Correction Plate to DY Pocket
(Left or Right)

ON DY:

a

b

c

d

Permalloy assembly

b

a

c

d

a-d : screen-corner
        misconvergence

YCH

XCV

TLV1

TLV2

Screen

Focus

– 31 –

2. WHITE BALANCE ADJUSTMENT
1) Set to Service Mode (Refer Section 5-1: ADJUSTMENTS

WITH COMMANDER).

2) Input white raster signal.
3) Set the PICTURE to minimum.
4) Select GCT (WHB 4) and BCT (WHB 5) with [1] and [4],

and adjust the level with [3]  and [6] for the best white
balance.

5) Set the PICTURE to maximum.
6) Select GDR (WHB 1) and BDR (WHB 2) with [1] and [4],

and adjust the level with [3] and [6] for the best white
balance.

7) Write into the memory by pressing [MUTING] then [0].

3. SUB BRIGHT ADJUSTMENT
1) Set to service mode.
2) Input a staircase signal of black to white from the pattern

generator.

3) BRIGHTNESS ............. 50%.

PICTURE ..................... MINIMUM

4) Select SBR (WHB7) with [1] and [4], and adjust SBR

(WHB7) level with [3] and [6] so that the second stripe
from the right is dimlylit.

1. G2 (SCREEN) ADJUSTMENT
1) Set the PICTURE to normal.
2) Put to VIDEO input mode without signals.
3) Connect R, G and B of the C6 board cathode to the

oscilloscope.

4) Adjust BRIGHTNESS to obtain the cathode voltage to the

value below.

5) Adjust G2 (screen) on the FBT until picture shows the

point before cut off.

White

second from the right

Black

0 V

Cathode setting voltage:

180 V 

± 2 (VDC)...29"

– 32 –

Service adjustments to this model can be performed using the
supplied Remote Commander RM-914

With the unit on standby

The screen display is :

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

c. METHOD OF WRITE INTO MEMORY
1) Set to Service Mode.
2) Press [1] (UP) and [4] (DOWN), to select the adjustment.
4) Press [MUTING] button to indicate WRITE on the screen.
5) Press [0] button to write into memory.

1) After adjustment, pull out the plug from AC outlet, and

then plug into AC outlet again.

2) Turn the power switch ON and set to Service Mode.
3) Call the adjusted items again to confirm adjustments were

made.

1, 4

Select the adjustment item.

↓

3, 6

Raise/lower the data value.

↓

[MUTING]

Writes.

↓

 -

Executes the writing.

7, -

All the data becomes the values in
memory.

8, -

All user control goes to the standard
state.

5, -

Service data initialization (Be sure not
to use usually.)

[MUTING]

 + -

Write 50Hz adjustment data to 60Hz,
or vice versa.

2, -

Write 50Hz adjustment data to 60Hz,
or vice versa.

n

 

[DISPLAY]

 

n

 

5

 

n

  

VOL (+)

  

n

 

[POWER]

Item Number 00 of device GEO
This explanation uses H-Position as an example.
1. Select “GEO 00 HPS” with the [1] and [4] buttons.
2. Raise/lower the data with the [3] and [6] buttons.
3. Select the optimum state. (The standard is 1F for PAL

reception.)

4. Write with the [MUTING] button. (The display changes to

WRITE.)

5. Execute the writing with the [0] button. (The WRITE

display will be changed to red color while excuting, and
back to SERVICE.)

Example on screen display :-

PAL,SECAM:50
NTSC           :60

00

HPS

1C

SERVICE

Data

Mode

Item 

Name

Item No

Software version

Suffix No
(OEM Code)

Total Power-On time (hours)

p

Marking of new NVM

GEO

1.0C

59

7F

000A

0

041S

Device 

Name

50

1F

SERVICE 50

HPS

Adjusted with [3] 
and [6] buttons.

GREEN

Write with [MUTING]

Write executed with [0]

GEO

00

7F

0

000A

59

041S 1.0C

GREEN

1F

WRITE

50

HPS

GEO

00

7F

0

000A

59

041S 1.0C

1F

SERVICE 50

HPS

RED
The WRITE display
then the display
returns to green
SERVICE

GEO

00

7F

0

000A

59

041S 1.0C

Use the same method for all Items. Use [1] and [4] to select
the adjustment item, use [3] and [6] to adjust, write with
[MUTING], then execute the write with [0].

Note : 1. In [WRITE], the data for all items are written into

memory together.

2. For adjustment items that have different standard

data between 50Hz or 60Hz, be sure to use the
respective input signal after adjustment.