DOWNLOAD Sony KV-DR34M97 Service Manual ↓ Size: 17.82 MB | Pages: 127 in PDF or view online for FREE

Model
KV-DR34M97
Pages
127
Size
17.82 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-dr34m97.pdf
Date

Sony KV-DR34M97 Service Manual ▷ View online

– 10 –
KV-DR34M97
RM-991
• 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
– 11 –
KV-DR34M97
RM-991
SECTION 2
SERVICE JIG
2-1. JIGS REQUIRED FOR SERVICING
REF NO.
DESCRIPTION
QUANTITY
PART NO.               REMARK
J-1
TOOL(20P),SERVICE
1
3-702-763-01         For A to BC1 board extension
1
                              For A to P board extension
J-2
TOOL(40P),SERVICE
1
3-702-764-01         For A to B3 board extension
J-3
TOOL(50P-A),SERVICE
1
3-702-765-01         For D to D5 board extension
J-4
TOOL(7PX2),SERVICE
1
3-702-775-01         For  A  to  V2  board extension
                              (not used for this model)
SECTION 3
CIRCUIT BOARDS LOCATION
J-1
J-2
J-3
J-4
D Board
D5 Board
B3 Board
J Board
P Board
A Board
F1 Board
BC1 Board
V2 Board (not used for this model)
H1 Board
VM Board
H2 Board
C Board
DH Board
– 12 –
KV-DR34M97
RM-991
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.
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., PIC rotation, OSD Language,
Fine tuning, TV System, Skip
Video input
RF
Volume
30
DRC-MF
DRC1250
Picture mode
DYNAMIC
Sound mode
DYNAMIC
Surround mode
OFF
Color system(video)
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*
Bilingual mode
MAIN*
High-deviation mode
AUTO*
Child lock
OFF*
Wide mode
OFF
Game mode
OFF
Teletext mode
OFF
Sleep timer
OFF
Wake-up timer
OFF
Sound muting
OFF
3DNR
ON
*= only when in RF mode
– 13 –
KV-DR34M97
RM-991
• 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
normal
Neck assy
G2
G1
G3
Align the edge of 
the neck assy with 
the edge of the G3 grid. 
Fig. 5-1
Red
Blue
Green
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.
Contrast
Brightness
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
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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