DOWNLOAD Sony KV-AR25M60 Service Manual ↓ Size: 19.11 MB | Pages: 127 in PDF or view online for FREE

– 13 –

If a customer faces some setting problem that cannot be solved, using the "RESET" function some items will
be reset to its original setting (shipment condition)

The way to access to the "RESET" Function:-

a) By pressing "MENU" button or "SELECT" button (for non-menu models) on the Front Key Input and

hold it down for 5 seconds.

Sequential to the resetting operation (either methods being used in No. 2), TV set would shut down once and
automatically turn on again. The power-off duration is expected to be about 500msec. An OSD message,
"RESET" tentatively will be displayed for 10 sec after IK status gets stable.
As a result, some items will be reset to an initial condition (shipment condition) wheareas some other remains
at the last selection by user.

Items that remains at the last selection by user

Reset Items

Channel No., Favourite CH Setup,

PIC rotation, OSD Language, Fine tuning, TV System, Skip

*= only when in RF mode

Video input

RF

Volume

30

Picture mode

DYNAMIC

Wide mode

OFF

Intelligent picture

ON

Sound mode

DYNAMIC

Surround mode

OFF

Intelligent Vol

OFF

Multi Picture (PIP)

OFF (KV-AR25M66 only)

PIP position

Bottom Right
(KV-AR25M66 only)

OSD recall

OFF

Antenna sensitivity

HIGH*

Stereo mode

STEREO/NICAM*

Bilingual mode

MAIN*

High-deviation mode

AUTO

Child lock

OFF*

Game mode

OFF

Teletext mode

OFF

Sleep timer

OFF

Wake-up timer

OFF

Sound muting

OFF

– 14 –

• The following adjustments should be made when a complete

realignment is required or a new picture tube is installed.

• These adjustments should be performed with rated power

supply voltage unless otherwise noted.

Controls and switches should be set as follows unless otherwise noted:

PICTURE control ...........................................................  normal

BRIGHTNESS control ...................................................  normal

Perform the adjustments in the following order :

1. Beam Landing

2. Convergence

3. Focus

4. White Balance

Note :  Test Equipment Required.

1. Pattern Generator

2. Degausser

3. Oscilloscope

normal

Preparation :
• In order to reduce the influence of geomagnetism on the set's

picture tube, face it east or west.

• Switch on the set's power and degauss with the degausser.

1. Input a white signal with the pattern generator.

Contrast
Brightness

2. Position neck assy as shown in Fig3-2.
3. Set the pattern generator raster signal to a green raster.
4. Move the deflection yoke to the rear and adjust with the

purity control so that the green is at the center and the blue
and the red take up equally sized areas on each side.
(See Figures 3-1 through 3-4.)

5. Move the deflection yoke forward and adjust so that the

entire screen is green. (See Figure 3-2.)

6. Switch the raster signal to blue, then to red and verify the

condition.

7. When the position of the deflection yoke has been decided,

fasten the deflection yoke with the screws and DY spacers.

8. If the beam does not land correctly in all the corners, use a

magnet to adjust it.

(See Figure 3-5.)

}

Neck assy

G2

G1

G3

Align the edge of
the neck assy with
the edge of the G2 grid.

a

b

b

c

c

d

d

a

Purity control
corrects this area.

Disk magnets or rotatable
disk magnets correct these
areas (a-d).

Deflection yoke positioning
corrects these areas.

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

○

Red

Blue

Green

Purity control

– 15 –

Preparation :
• Before starting this adjustment, adjust the focus, horizontal size

and vertical size.

• Receive dot/hatch signal.
• Pic mode: Personal (Pic 90%, Brightness 50%, Colour 50 %,

Hue 50%, Sharpness 50%).

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. 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

H. STAT VR

V. STST
Magnet

RV702
H. STAT

RV701
SCREEN (G2)

C6 Board

Center dot

R G B

R

G

B

Purity

BMC

BMC (Hexapole)

Purity

DY pocket

V.STAT

V.STAT

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

– 16 –

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)

Preparation:
• 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

Neck assy

Neck assy

Blue

Red

Blue

Red

VM1 board

VM1 board

R B

R B

TLH

TLV

YCH

XCV

B

R

R

B