DOWNLOAD Sony KV-DA28M36 Service Manual ↓ Size: 25.99 MB | Pages: 127 in PDF or view online for FREE

Model
KV-DA28M36
Pages
127
Size
25.99 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-da28m36.pdf
Date

Sony KV-DA28M36 Service Manual ▷ View online

– 9 –
KV-DA28M36/M64
RM-W105
• REMOVAL OF ANODE-CAP
Note:
• After removing the anode, short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT
shield or carbon paint on the CRT.
• REMOVING PROCEDURES
Turn up one side of the rubber cap in the direction
indicated by the arrow a.
Using a thumb pull up the rubber cap firmly in the direc-
tion indicated by the arrow b.
When one side of the rubber cap is separated from the
anode button,  the anode-cap can be removed by
turning up the rubber cap and pulling it up in the
direction of the arrow 
c.
• HOW TO HANDLE AN ANODE-CAP
Do not damage the surface of anode-caps with
sharp shaped objects.
Do not press the rubber too hard so as not to
damage the inside of anode-cap.
A metal fitting called the shatter-hook terminal is
built into the rubber.
Do not turn the foot of rubber over too hard.
The shatter-hook terminal will stick out or damage
the rubber.
a
a
b
b
c
 Anode Button
– 10 –
KV-DA28M36/M64
RM-W105
SECTION 2
SERVICE JIG
2-1. JIGS REQUIRED FOR SERVICING
REF NO.
DESCRIPTION
QUANTITY
PART NO.               REMARK
J-3
TOOL(50P-A),SERVICE
1
3-702-765-01         For A to BH1 board extension
J-5
TOOL(7P),(8P),SERVICE
1
J-2509-400-D         For A to BC board extension
SECTION 3
CIRCUIT BOARDS LOCATION
SAMPLE
WL Board
BP Board
BC Board
BH1 Board
J Board
A Board
D Board
F1 Board
VM Board
H2 Board
H1 Board
C Board
DL Board
– 11 –
KV-DA28M36/M64
RM-W105
SECTION 4
ADVANCE OPERATION
4-1. "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 (shipping condition)
2. How to Operate
There are 2 ways to access to the "RESET" Function:-
a) By pressing "RESET" button on the Remote Commander.
b) By pressing "MENU" button on the Front Key Input and hold it down for 5 seconds.
(DAXXMXX doesn't have this function anymore.)
(DAXXNXX, DAXXKXX still have it.)
3. Subsequent of Operation
Sequential to the resetting operation, TV set would shut down once and automatically turn on again. The
power-off duration is expected to be about 500msec. Initial Setup Menu is displayed.
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., PICTURE POSITION (included PICTURE
ROTATION and PICTURE V-POSITION), OSD Language, Fine
tuning,TV System, Skip, Program label, Program sorting, Video
label, Program block (NTSC model)
Video input
RF user last setting
Volume
25
DRC-MF
DRC1250
Picture mode
DYNAMIC
3D Intelligent Picture
ON
Sound mode
DYNAMIC
Intelligent volume
OFF
Surround
OFF
Wide mode
4.3
Auto wide
ON
Twin
OFF
Program Index
OFF
* Program Block
Reset particular channel to
unblock
WEGA Theatre Setup
Direct Input
Video 1
Speaker
Main
Game mode
OFF (Video) *Not available in RF
mode
Color System
Reset to Auto at the CH, others
keep user setting
Eco mode
OFF
Wide mode
Wide zoom
Auto wide
ON
4.3 Default
Wide zoom
V Center
00
V Size
00
Picture mode
RF user last setting
Mute
OFF
OSD Display status
OFF
Main volume
25
Center-in volume
25
(Remote button)
Center speaker
Main or center in (No menu display)
(UNDER WEGA
(Selected only when WTM turns on)
THEATRE SETUP MENU)
Initial setup menu
Reactivate/ON
Twin size
Center
*= Reset only during watching time
- For Multi model only
- Not reset for NTSC model
Category
Default
Category
Default
– 12 –
KV-DA28M36/M64
RM-W105
• 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. Color-bar/Pattern Generator
2. Degausser
3. Oscilloscope
SECTION 5
SET-UP ADJUSTMENTS
................................................................................................................................................................................................................................
Fig. 5-3
Fig. 5-1
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.
5-1. BEAM LANDING
1. Input a white signal with the pattern generator.
Pic mode : Dynamic
2. Position neck assy as shown in Fig 5-1.
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 5-1 through 5-3.)
5. Move the deflection yoke forward and adjust so that the
entire screen is green. (See Figure 5-2.)
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 5-4.)
Fig. 5-2
Fig. 5-4
Neck assy
G2
G1
G3
Align the edge of
the neck assy with
the edge of the G2 grid.
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
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