Sony KV-HS29N90 Service Manual ▷ View online
– 16 –
KV-HS29/34/38N90
RM-999
2-2. CONVERGENCE ADJUSTMENT
Preparation :
• Before starting this adjustment, adjust the focus, horizontal size
• Before starting this adjustment, adjust the focus, horizontal size
and vertical size.
• Set the PICTURE and BRIGHTNESS 50%.
• Cross hatch / Dot pattern.
• Cross hatch / Dot pattern.
(1)
Horizontal and Vertical Static Convergence
1. (Moving horizontally), adjust the H.STAT control so that the
red, green and blue dots are on top of each other at the center
of the screen.
2. (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.
3. If the H.STAT variable resistor cannot bring the red, green and
blue dots together at the center of the screen, adjust the
horizontal convergence with the H.STAT variable resistor and
the V.STAT magnet in the manner given below.
(In this case, the H.STAT variable resistor and the V.STAT
magnet influence each other, so be sure to perform adjustments
while tracking.)
1
V. STAT
2
H. STAT VR
3
C1 Board
Center dot
R G B
R
G
B
H. STAT VR
V. STAT
Magnet
R
R
G
G
B
B
a
a
b
b
b
R
R
G
G
B
B
a
b
R
R
G
G
B
B
a
a
b
b
b
V.STAT
Purity
– 17 –
KV-HS29/34/38N90
RM-999
(2) Dynamic Convergence Adjustment
Preparation:
• Before starting this adjustment, adjust the horizontal static
• Before starting this adjustment, adjust the horizontal static
convergence and the vertical static convergence
• Set the PICTURE and BRIGHTNESS to normal.
1. Adjust TLH. (TLH correction piece)
1 Receive the dot/hatch pattern signal and adjust picture quality
1 Receive the dot/hatch pattern signal and adjust picture quality
by the menu.
2 Correct horizontal mis-convergence of red and blue of both
sides on the X axis.
When red is outside insert BMC magnet to right side (THL+)
views from DY neck. And when blue is outside, insert it to left
side (THL–) and take both sides.
2. Adjust XCV core.
To able to become balance of XCV on the X axis well.
3. Adjust V-TILT.
Correct the vertical mis-convergence of red and blue of verti-
cally sides on the Y axis.
4
BMC (Hexapole) Magnet.
If the red, green and blue dots are not balanced or aligned, then
use the BMC magnet to adjust in the manner described below.
R G
B
R
G
B
R
G B
R
B
R
G
G
G
B
R
B
R
(B)
B
(R)
B
(R)
TLH +
TLH -
R
(B)
4. Adjust YCH.
Adjust horizontal mis-convergence of red and blue of verti-
cally sides on the Y axis. Mentioned above steps 2 to 4 are
adjusting respectively perform minuteness tracking.
<KV-HS34/38>
<KV-HS29>
H-TRP
YCH
TLV
XCV
FRONT
V3 board (KV-HS29)
C1 board
BMC magnet
RV9001
V board (KV-HS34/38)
C1 board
BMC magnet
RV9001
H-TRP
(TLV1)
(TLV1)
YCH TLV
(TLV2)
RV1
RV3
RV2
XCV
TOP
– 18 –
KV-HS29/34/38N90
RM-999
2-3. FOCUS ADJUSTMENT
Note
Focus adjustment should be completed before W/B adjustment.
(1) Receive digital monoscope pattern.
(2) Set "A/V CONTROL" to "STANDARD".
(3) Adjust FOCUS VR so that the center of the screen becomes
justfocus.
(4) Change the receiving signal to white pattern and blue back.
(5) Confirm MAGENTA RING should not be over the limit sam-
ple. In case MAGENTA RING is over the limit sample, adjust
FOCUS VR to take tracking of MAGENTA RING and FOCUS.
2-4. NECK ASSY TWIST ADJUSTMENT
(1) Receive dot/hatch pattern.
(2) Turn FOCUS VR fully counter-clockwise.
(3) Confirm the dot shape at the screen center. (Fig. 2-5)
(4) Resume FOCUS VR.
Note
In case of turning NECK ASSY, loosen the screw 3 turns. Do not
move the position.
OK
Turn NECK ASSY clockwise.
Turn NECK ASSY counter clockwise.
Fig. 2-5
Fix a Permalloy assy corresponding to the misconverged
areas.
areas.
(3) Screen-corner Convergence
b
a
c
d
a-d : screen-corner
misconvergence
misconvergence
a
b
c
d
Permalloy assembly
Forcus
– 19 –
KV-HS29/34/38N90
RM-999
3. SUB PICTURE BRIGHTNESS ADJUSTMENT
1) Tune RF PAL white signal at program No. 1 and No. 2.
2) Select “TWIN PICTURE” mode.
3) Receive different RF PAL white signals in MAIN and Sub pic-
ture.
4) Adjust RV3300 on A Board, so that the output from the A8 pin
and A5 pin of the CN1180 becomes within the spec.
CVBS 1
A8 pin
CVBS 2
A5 pin
2-5. G2 (SCREEN) AND WHITE BALANCE
ADJUSTMENTS
1. G2 (SCREEN) ADJUSTMENT
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 oscillo-
scope.
4) Adjust BRIGHTNESS to obtain the cathode voltage to the
value below.
5) Whilst watching the picture, adjust the Screen VR (RV9002)
located on the C1 board to the point just before the flyback
return lines disappear (to the point before cut-off).
2. WHITE BALANCE ADJUSTMENT
1) Set to Service Mode (Refer Section 3-1: ADJUSTMENTS
WITH COMMANDER).
2) Input white raster signal.
3) Set the following condition.
PICTURE minimum, BRIGHTNESS 50%
4) Select GCT (WHB 8) and BCT (WHB 9) with 1 and 4, and
adjust the level with 3 and 6 for the best white balance.
5) Set the PICTURE to maximum.
6) Select GDR (WHB 5) and BDR (WHB 6) with 1 and 4,
and adjust the level with 3 and 6 for the best white bal-
ance.
7) Write into the memory by pressing [MUTING] then -.
0 V
170 V
± 2 (VDC)
MAIN
A
SUB
B
Spec: |A - B|
± 20mV
Click on the first or last page to see other KV-HS29N90 service manuals if exist.