Sony KV-24WX1A Service Manual ▷ View online
KV-24WX1
— 21 —
2-5. A BOARD REMOVAL
2-6. A EXTENSION BOARD
2-7. PICTURE TUBE REMOVAL
1
2
3
•
HOW TO HANDLE AN ANODE-CAP
Don't damage the surface of anode-cap with sharp shaped material !
Don't press the rubber hardly not to hurt inside of anode-caps !
A metal fitting called as shatter-hook terminal is built into the rubber.
Don’t turn the foot of rubber over hardly !
The shatter-hook terminal will stick out or damage the rubber
Don't press the rubber hardly not to hurt inside of anode-caps !
A metal fitting called as shatter-hook terminal is built into the rubber.
Don’t turn the foot of rubber over hardly !
The shatter-hook terminal will stick out or damage the rubber
.
b
b
Anode button
a
* REMOVING PROCEDURES.
c
Turn up one side of the rubber cap in
the direction indicated by the arrow a
the direction indicated by the arrow a
1
2 Using a thumb pull up the rubber cap
firmly in the direction indicated by the
arrow b
arrow b
3
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
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
•
REMOVAL OF ANODE-CAP
Note:
Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield or
carbon paint on the CRT, after removing the anode.
A board
BE-3D EXTENSION BOARD
A board
Cushion
Picture tube
9
Anode cap
1
Four PT screws
8
Deflection yoke
4
2
Chassis assy
6
Degaussing coil
7
Spring extension
5
Two DGC holers
3
C board
KV-24WX1
— 22 —
REMOVAL AND REPLACEMENT OF THE MAIN-BRACKET
BOTTOM PLATES.
BOTTOM PLATES.
(1) REMOVING THE PLATES
In the event of servicing being required to the solder side of the D Board printed
circuit, the bottom plates fitted to the main chassis bracket require to be removed.
This is performed by cutting the gates with a sharp wire cutter at the locations
shown and indicated by arrows.
circuit, the bottom plates fitted to the main chassis bracket require to be removed.
This is performed by cutting the gates with a sharp wire cutter at the locations
shown and indicated by arrows.
Note : There are 5 plates fitted to the main bracket and secured by 4 or 6 gates.
Only remove the necessary plate to gain access to the circuit board.
FOR SAFETY REASON THIS
PLATE MUST BE REMOUNTED
AFTER CUTTING AND
TAKING AWAY.
Fig 1
For safety reasons, on no account should the plates be removed
and not refitted after servicing.
and not refitted after servicing.
Because the plates differ in size it is important that the correct plates are refitted in their
original location.
The plates are identified by markings A-B-C-D-E on their top side.
original location.
The plates are identified by markings A-B-C-D-E on their top side.
1.
Identify the plate by locating its marking.
2.
Turn the plate over noting where the marking is located.
3.
Locate the corresponding marking indicated on the main chassis bracket. See Fig 2.
4.
Refit the plate as indicated in Fig 3 with the markings located next to each other.
(2) REFITTING THE PLATES
FOR SAFETY REASON THIS
PLATE MUST BE REMOUNTED
AFTER CUTTING AND
TAKING AWAY.
ATTENTION
FOR SAFETY REASON THIS
PLATE MUST BE REMOUNTED
AFTER CUTTING AND
TAKING AWAY.
ATTENTION
E
D
INDEX MARKING
AT BRACKET FRAME
Fig 2
In the event of the plates requiring to be
removed at a later stage, this can be achieved
by inserting a screwdriver in the snap-recess
indicated as in Fig 4 and lifting out.
removed at a later stage, this can be achieved
by inserting a screwdriver in the snap-recess
indicated as in Fig 4 and lifting out.
INSERT FROM
THE BOTTOM
SIDE
THE BOTTOM
SIDE
Fig 3
MAIN BRACKET
Fig 4
KV-24WX1
— 27 —
SECTION 4
CIRCUIT ADJUSTMENTS
4-1. ELECTRICAL ADJUSTMENTS
5
+
+
(ON SCREEN
DISPLAY)
DISPLAY)
(DIGIT 5)
(VOLUME
+
)
(TV)
Service adjustment to this model can be performed
with the supplied remote commander RM-839.
with the supplied remote commander RM-839.
HOW TO ENTER INTO SERVICE MODE
1.
Turn on the main power switch of the set and
enter into standby mode.
enter into standby mode.
2.
Press the following sequence of buttons on the Remote
Commander.
Commander.
"TT-- " will appear in the top right corner of the screen.
Other status information will also be displayed.
Other status information will also be displayed.
3.
Press MENU on the commander to obtain the following
menu on the screen.
menu on the screen.
4.
Move to the corresponding adjustment using the
button on the commander.
button on the commander.
5.
Move the button to the right to enter the selected
adjustment.
adjustment.
6.
Turn off the power to quit the service mode when
adjustments are completed.
adjustments are completed.
TEST MENU
> Picture adjustment
Geometry
Wide
MSP
IC status
Current TV status
PICTURE ADJUSTMENT
AFC mode
1
REF position
3
SCP BGR
1
SCP BGF
1
Trap Fo
7
Sub contrast
Adj
Sub colour
Adj
Sub brightness
Adj
Sub hue
Adj
Green drive
Adj
Blue drive
Adj
Green cutoff
Adj
Blue cutoff
Adj
Gamma
0
Pre / overshoot
0
Y delay
5
GEOMETRY ADJUSTMENT
V Size
Adj
V Position
Adj
S Correction
Adj
V Linearity
Adj
H Size
Adj
H Position
Adj
Pin Amp
Adj
Pin Phase
Adj
AFC Bow
Adj
AFC Angle
Adj
EHT V
Adj
EHT H
Adj
Corner Pin
Adj
WIDE
V Aspect
43
V Scroll
31
Upper V Lin
0
Lower V Lin
0
Left Blanking
1
Right Blanking
11
Click on the first or last page to see other KV-24WX1A service manuals if exist.