Sony KV-J14P2S Service Manual ▷ View online
– 13 –
KV-J14P2S/J51PF2S
RM-869
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
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 so that the red,
green and blue dots are on top of each other at the center of the
screen.
•
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.
•
Operation of BMC (Hexapole) magnet.
If the blue or red dot does not converge with the other two dots,
perform following steps.
Move BMC magnet (a) to correct insufficient H.static
convergence.
Rotate BMC magnet (b) to correct insufficient V.static
convergence.
In either case, repeat Beam Landing Adjustment.
R G B
G
R
B
Center dot
V.STAT Magnet
C board
RV 701
SCREEN (G2)
V.STAT
Purity
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
a
BMC magnet
b
– 14 –
KV-J14P2S/J51PF2S
RM-869
B G R
B
G
R
R
G
B
R G B
R G B
R
G
B
B
G
R
B G R
R G B
B G R
B G R
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.
(3) Screen-corner Convergence
(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.
a-d : screen-corner
misconvergence
misconvergence
b
a
c
d
a
d
c
b
Fix a Permalloy assy
corresponding to the
misconverged areas
corresponding to the
misconverged areas
Permalloy assembly
– 15 –
KV-J14P2S/J51PF2S
RM-869
3-3. FOCUS ADJUSTMENT
Adjust FOCUS control on the C board (RV703) for the best focus.
b. METHOD OF CANCELLATION FROM SERVICE
MODE
Set the standby condition (Press
POWER
button on the
commander) and then 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) to select an item of
adjustments.
3) Press
MUTING
button and it will indicate WRITE on screen.
4) Press - 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, confirm they were adjusted.
Note
Initial DATA
09
RDR
25 (J14P2S)
WHITE POINT R
09
RDR
28 (J51PF2S)
WHITE POINT R
0A
GDR
20
WHITE POINT G
0B
BDR
20
WHITE POINT B
Item
number
number
Adjustment
item
item
3-4. ADJUSTMENT WITH COMMANDER
a. AN ITEM OF ADJUSTMENT
3-5. 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.
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 (KV-J14P2S)/28 (KV-J51PF2S) 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 - .
177 ± 2 V DC...21"
165 ± 2 V DC...14"
165 ± 2 V DC...14"
SERVICE
MUTING
1 F
DATA
RDR
Adjustment Item
058S
Item number
WRITE
1 F
RDR
058S
0
Executes the writing
Green
0 V
– 16 –
KV-J14P2S/J51PF2S
RM-869
SECTION 4
SELF DIAGNOSIS FUNCTION
If no acknowledgement is returned from a device which is turned "ON", the device has a problem.
In this case, one of the LED's responding to the problem device will flicker a defined number of times.
Flickering is operated by lighting the LED's for 60ss each time.
The flickering frequency responding to each failed device is shown below.
All the devices are checked one after another from the left of the table.
If an error is found, the responding LED will start flickering.
So, if more than 1 device have failed, only the one on the left side will flicker.
Device
Flickering
Frequency
NONVOLATILE
MEMORY
(IC003)
1
—
—
Y/C JUNGLE
(IC300)
3
—
—
—
—
TONE
CONTROL
(IC201)
6
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