DOWNLOAD Sony KV-XA29M31 Service Manual ↓ Size: 4.75 MB | Pages: 110 in PDF or view online for FREE

Model
KV-XA29M31
Pages
110
Size
4.75 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-xa29m31.pdf
Date

Sony KV-XA29M31 Service Manual ▷ View online

– 29 –
KV-XA29M31/XA29M50/
XA29M61/XA34M31
RM-954
SECTION 3
ADVANCE OPERATION
3-1. "RESET" FUNCTION
1. Purpose
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)
2. How to Operate
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.
3. Subsequent of Operation
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
Program 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
Sound mode
DYNAMIC
Surround mode
OF
Color system(video)
AUTO
Favourite CH mode
AUTO
Multi Picture (PIP)
OFF
PIP position
Bottom Right
OSD recall
OFF
Intelligent volume
OFF
ECO mode
OFF
Color system(RF)
AUTO*
Antenna sensitivity
HIGH*
Stereo mode
STEREO/NICAM*
(except KV-XA29M50)
Bilingual mode
MAIN*
(except KV-XA29M50
High-deviation mode
AUTO*
Child lock
OFF*
Wide mode
OFF
Game mode
OFF
Teletext mode
OFF (except
KV-XA29M50)
Sleep timer
OFF
Wake-up timer
OFF
Sound muting
OFF
}
Not used for
this model
– 30 –
KV-XA29M31/XA29M50/
XA29M61/XA34M31
RM-954
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
SECTION 4
SET-UP ADJUSTMENTS
................................................................................................................................................................................................................................
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.
4-1. BEAM LANDING
1. Input a white signal with the pattern generator.
Contrast
Brightness
2. Position neck assy as shown in Fig4-2.
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 4-1 through 4-4.)
5. Move the deflection yoke forward and adjust so that the
entire screen is green. (See Figure 4-2.)
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 4-5.)
}
Fig. 4-1
Fig. 4-2
Fig. 4-5
Fig. 4-4
Fig. 4-3
Neck assy
G2
G1
G3
Behind the G2 edge
Purity control
Red
Blue
Green
Purity control
corrects this area.
Disk magnets or rotatable
disk magnets correct these
areas (a-d).
Deflection yoke positioning
corrects these areas.
a
b
b
c
c
d
d
a
– 31 –
KV-XA29M31/XA29M50/
XA29M61/XA34M31
RM-954
4-2. CONVERGENCE
Preparation :
Before starting this adjustment, adjust the focus, horizontal size
and vertical size.
Receive dot/hatch signal.
Pic mode: Personal (Pic 90%, Brightness 50%, Col 50 %,
Hue 50%, Shp 50%).
(1)
Horizontal and Vertical Static Convergence
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
Center dot
R    G    B
R
G
B
H. STAT VR
V. STAT
Magnet
RV702
H. STAT
RV701
SCREEN (G2)
C6 Board
BMC (Hexapole)
V.STAT
DY pocket
Purity
V.STAT
BMC
Purity
R
R
R
R
G
G
G
G
B
B
B
B
a
a
a
b
b
b
b
R
R
G
G
B
B
a
a
b
b
b
– 32 –
KV-XA29M31/XA29M50/
XA29M61/XA34M31
RM-954
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)
(2) Dynamic Convergence Adjustment
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
Blue
Red
VM1 board
Blue
Red
VM1 board
Neck assy
Neck assy
R B
R B
TLH
TLV
YCH
XCV
B
R
R
B
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