DOWNLOAD Sony KV-21FA240 Service Manual ↓ Size: 8.6 MB | Pages: 60 in PDF or view online for FREE

Before performing this adjustment, perform Horizontal and Vertical Static 

Convergence Adjustment.

Input cross hatch pattern.
 

a)  TLH

 

Adjust the horizontal convergence of red and blue dots by inserting 

TLH Correction Plate to the DY pocket (left or right).

 

b)  YCH

 

Adjust YCH to balance Y axis.

 

c)  TLV

 

Adjust YCh to balance Y axis.

 

d)  XCV

 

Adjust XCV to balance X-axis.

TLV

R B

YCH

R

B

XCV

B

R

TLH

B

R

YCH

DY pocket

DY pocket

XCV

TLV

XCV

TLV

TLH Plate

ON DY:

Affix a Piece A (90), Convergence Correct/Permaloy Assy Correction to 

the misconverged areas. 

b

a

c

d

a-d : screen-corner
        misconvergence

a1

b1

c1

d1

a1~d1:Piece A (90), Convergence Correct

or

Permaloy Assy Correction

FOCUS adjustment should be completed before White Balance 

adjustment. (See 4-4. White Balance Adjustment)

1.  Receive digital monoscope pattern.
2.  Set Picture Mode to “DYNAMIC”.
3.  Adjust focus VR to obtain a just focus at the center of the screen.
4.  Change the receiving signal to white pattern and blue back.
5.  Confirm magenta ring is not noticeable. In case magenta ring is 

obvious, then adjust FOCUS VR to balance magenta ring and 

FOCUS.

SCREEN

FOCUS

1.  Before beginning adustment procedure:
 

-Set Picture and Brightness to “STANDARD”.

 

-Set TV to Video mode.

 

-Set WHBL 016 “RGBB” to 01

2.  Connect R, G, B of the C/CV board cathode to oscilloscope.
3.  Adjust Brightness to obtain the cathode value to the value shown 

below:

165

± 2VDC

4.  Adjust SCREEN VR on the FBT until the scanning line disappears.
5.  Set WHBL 16 “RGBB” back to 00.

MUTING

(Enter into 
memory)

8

(Initialize)

5

Display previous 
Category

3

Increase 
Data value

0

(Remove 
from memory)

ENTER

(Enter into 
memory)

6

Decrease 
Data value

1

Display next 
Item

2

Display next 
Category

4

Display previous
 Item

DISPLAY

(Service Mode)

POWER

(Service Mode)

VOLUME (+)

(Service Mode)

Use the Remote Commander

 

(RM-YA005) 

to

 perform the circuit adjustments in this section.

Test Equipment Required:   1. Pattern generator   2. Frequency counter   3. Digital multimeter  4.  Audio oscillator

Use the remote commander to access the service meu mode and perform the following adjusments.

1.  Standby mode (Power off).
2.  Press the following buttons on the remote commander within a second of each other: 
 

DISPLAY

  

 Channel  5      

 Sound Volume  + 

 

 POWER

 

The screen displays the first service data category item.

item no.

service data

NVM

field

channel no./

category

in decimal

item name

in decimal

NG

service command

frequency

video input name

GEOM

000

HPOZ

055

x

SERVICE

60

  VIDEO 1

software

service data

reserved

power on time

release ID

version

in binary

for factory

color system

(decimal)

STR31 

7.11U

0011 1111

FF FF

- - - - - 

 

00084

Status Byte

Status Byte

Flash DCXO

#1 SSD

#2 SSD

000 00 00 0000 

3E 

40 000 

004000

0000FF

1.  On the Remote Commander press  2 to select the next category, or  5 to select the previous category.
2.  Press  1 to select the next item, or  4 to select the previous item.
3.  Press  3 to increase the data value, or  6 to decrease the data value.
4.  Press  MUTING  then  0 to write into memory.

GREEN

GEOM

000

HPOS

039 SERVICE 50 VIDEO 1

write with [MUTING].

GREEN

GEOM

000

HPOS

039 WRITE

50 VIDEO 1

GEOM

000

HPOS

039 WRITE

50 VIDEO 1

Write executed with -.

RED

“WRITE” becomes red
when saving, then changes
to “SERVICE”

“WRITE” displays when 
saving changes

Use the following procedure to reset the User Menus to the factory default settings.

1.  Access Service Adjustment Mode.
2.  Press  8 then  0 on the Remote Commander.