Sony KV-B14PD1 Service Manual ▷ View online
– 13 –
KV-B14PD1
RM-883
3-2. CONVERGENCE
Preparation :
•
Before starting this adjustment, adjust the focus, horizontal size
and vertical size.
•
Minimize the brightness setting.
•
Provide dot pattern.
(1)
Horizontal and Vertical Static Convergence
R G B
G
R
B
Center dot
V.STAT Magnet
BMC Magnet
1. (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.
2. (Moving horizontally), adjust the H.STAT VR Magnet so that
the red, green and blue dots are on top of each other at the
center of the screen.
3. If the BMC Magnet cannot bring the red, green and blue dots
together at the center of the screen, adjust the horizontal
convergence with the BMC Magnet and the V. STAT Magnet
in the manner given below.
(In this case, the BMC Magnet and the V. STAT Magnet
influence each other.)
4. Tilt the V.STAT Magnet and adjust the static convergence by
opening or closing the V.STAT Magnet.
•
Operation of V.STAT magnet.
If the V.STAT magnet is moved in the direction of the a and b
arrows, the red, green and blue dots move as shown below.
B
R
B
R
a
b
b
b
a
b
a
b
a
R
G
B
b
B
G
R
b
b
a
a
1
2
3
G
G
B G R
R G B
– 14 –
KV-B14PD1
RM-883
•
Operation of BMC (Hexapole) Magnet.
•
The respective dot positions resulting from moving each magnet
interact, so be sure to perform adjustment while tracking.
Use the V. STAT Magnet to adjust the red, green and blue dots
so they coincide at the center of screen (by moving the dots in
the horizontal direction).
(2) Dynamic Convergence Adjustment
Preparation :
•
Before starting this adjustment, adjust the horizontal static
convergence and the vertical static convergence.
1. Slightly loosen the deflection yoke screws.
2. Remove the deflection yoke spacer.
R G
B
R
G
B
R
G B
R
G
B
R
G
B
R
G
B
3. Move the deflection yoke as shown in the figure below and
optimize the convergence.
4. Tighten the deflection yoke screws.
5. Install the deflection yoke spacer.
BMC (Hexapole)
V.STAT
Purity
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
– 15 –
KV-B14PD1
RM-883
(3) Screen-corner Convergence
a-d : screen-corner
misconvergence
misconvergence
b
a
c
d
Fix a Permalloy assy
corresponding to the
misconverged areas
corresponding to the
misconverged areas
Permalloy assembly
a
b
c
d
Item
number
number
Note
Adjustment
item
item
Initial DATA
09
RDR
25
WHITE POINT R
0A
GDR
20
WHITE POINT G
0B
BDR
20
WHITE POINT B
b. METHOD OF CANCELLATION FROM SERVICE
MODE
Set the standby condition (Press [POWER] button on the
commander) in the next place, press [POWER] button again,
hereupon it becomes TV mode.
c. METHOD OF WRITE FOR MEMORY
1) Set to Service Mode.
2) Press [1] (UP) and [4] (DOWN), select an item of adjustments.
3) Press [MUTING] button indicate and it will indicate WRITE on
screen.
4) Press [0] button to write into memory.
d. MEMORY WRITE CONFIRMATION METHOD
1) After adjustment, pull out the plug from AC outlet, and then
plug into AC outlet again.
2) Turn the power switch ON and set to Service Mode.
3) Call the adjusted items again to confirm they were adjusted.
a. AN ITEM OF ADJUSTMENT
3-3. FOCUS ADJUSTMENT
Adjust FOCUS control on the C board (RV703) for the best focus.
SERVICE
MUTING
1 F
Data
RDR
Adjustment Item
09
Item number
WRITE
1 F
RDR
09
0
Executes the writing
Green
– 16 –
KV-B14PD1
RM-883
3-4. G2 (SCREEN) AND WHITE BALANCE
ADJUSTMENTS
1. G2 (SCREEN) ADJUSTMENT (RV701)
1) Set the PICTURE and BRIGHTNESS to normal.
2) Put to VIDEO input mode without signals.
3) Connect R, G and B of the C board cathode to the
oscilloscope.
4) Adjust G2 (RV701) volume to the value below.
0 V
165
±
2 V
2. WHITE BALANCE ADJUSTMENTS
1) Set to Service Mode.
2) Input an entire white signal.
3) Set the PICTURE to maximum.
4) Select RDR(09) with [1] and [4] , and then set the level to 25
with [3] and [6] .
5) Select GDR(0A) and BDR(0B) with [1] and [4] and adjust the
level with [3] and [6] for the best white balance.
6) Write into the memory by pressing [MUTING] , then [0] .
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