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Model
KV-DA29M81
Pages
127
Size
12.05 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-da29m81.pdf
Date

Sony KV-DA29M81 Service Manual ▷ View online

– 13 –
KV-DA29M81
RM-W105
(3) Screen-corner Convergence
(2) Dynamic Convergence Adjustment
Preparation:
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 convergence piece)
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 TLH convergence piece to right
side (TLH +) views from DY neck. And when blue is outside,
insert it to left side (TLH –) and take both sides.
2. Adjust XCV core.
To able to become balance of XCV on the X axis well.
3. Adjust TLV.
Correct the vertical mis-convergence of red and blue of
vertically sides on the Y axis.
4. Adjust YCH.
Adjust horizontal mis-convergence of red and blue of
vertically sides on the Y axis. Mentioned above steps 2 to 4
are adjusting respectively perform minuteness tracking.
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.
5
Y separation axis correction magnet adjustment.
1. Receive the cross-hatch signal and adjust [PICTURE] to
[MIN] and [BRIGHTNESS] to [STANDARD].
2. Adjust the Y separation axis correction magnet on the neck
assembly so that the horizontal lines at the top and bottom of
the screen are straight.
Note
1. The Red and Blue magnets should be equally far from the
horizontal center line.
2. Do not separate the Red and Blue magnets too far.
(Less than   8 mm)
R G
B
R
G
B
R
G B
R
B
R
G
G
G
B
R
B
Neck assy
Neck assy
Red
Red
VM Board
VM Board
Blue
Red
Blue
Blue
R
(B)
B
(R)
B
(R)
TLH +
TLH -
R
(B)
b
a
c
d
a-d : screen-corner
        misconvergence
(VR1)
TLV1 (no need to adjust)
DY pocket
TLH Plate
(VR3)
TLV2
(XCV)
(VR2)
YCH
– 14 –
KV-DA29M81
RM-W105
5-3. FOCUS ADJUSTMENT
Note
Focus adjustment should be completed before W/B adjustment.
1. Receive digital monoscope pattern.
2. Set PIC MODE to "STANDARD".
3. Adjust FOCUS VR so that the center of the screen becomes
just focus.
4. Change the receiving signal to white pattern and blue back.
5. Confirm MAGENTA RING is not noticeable. In case
MAGENTA RING is obvious, adjust FOCUS VR to balance
between MAGENTA RING and FOCUS adjustment.
5-4. NECK ASSY TWIST ADJUSTMENT
1. Receive dot/hatch pattern DRC-MF, DRC1250, DYNAMIC.
2. Turn FOCUS VR fully counter-clockwise.
3. Confirm the dot shape at the screen center. (Fig. 5-4)
4. Resume FOCUS VR.
Note
In case of turning NECK ASSY, loosen the screw 3 turns. Do not
move the position.
5-5. G2 (SCREEN) AND WHITE BALANCE
ADJUSTMENT
1. G2 (SCREEN) ADJUSTMENT
1. Set the PICTURE and BRIGHTNESS to normal.
2. Put to any signal input mode without signals.
  MCP : 001 RON
3. Connect R, G and B of the C board cathode to the
oscilloscope.
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 flyback transformer to the point just before the
retrace lines disappear (to the point before cut-off).
2. WHITE BALANCE ADJUSTMENT
1. Set picture to Dynamic Mode.
2. [SADJ] COL 60 
t 00.
3. Fixed RDRV 
t 41.
4. Fixed RCUT 
t 31.
5. Adjust for highlight GDRV & BDRV.
6. Adjust for cut-off GCUT & BCUT.
1. Set picture to Dynamic Mode.
2. SADJ COL  00 
t 100.
3. Adjust for cut-off CBOF & CROF.
Set back SADJ COL 
t 60 (original condition).
FLYBACK TRANSFORMER  (T6803)
Focus
G2 Adjustment
Lead Assy,
Focus
0 V
170v 
± 2 (VDC)
Fix a Permaloy Assy Correction
to the misconverged areas
a to d : Permaloy Assy Correction
 OK
 Turn NECK ASSY clockwise.
 Turn NECK ASSY counter clockwise.
Fig. 5-4
a
b
c
d
Permalloy assembly
– 15 –
KV-DA29M81
RM-W105
SECTION 6
CIRCUIT ADJUSTMENTS
6-1.
ADJUSTMENTS WITH COMMANDER
Service adjustments to this model can be performed using the supplied remote commander RM-W105.
a. ENTERING SERVICE MODE
With the unit on standby
This operation sequence puts the unit into service mode.
This screen display is:
b. METHOD OF CANCELLATION FROM SERVICE MODE
Set the standby condition (Press [POWER] button on the commander), then press [POWER] button again, hereupon it
becomes TV mode.
c. METHOD OF WRITE INTO MEMORY
1. Set to Service Mode.
2. Press 1 (UP) and 4 (DOWN), to select the adjustment item.
3. Change item by pressing 3, 6.
4. Press [MUTING] button to indicate WRITE on the screen.
5. Press - button to write into memory.
item no.
service data
NVM
service
field
channel no./
category
in decimal
item name
in decimal
NG
command
frequency
video input name
WHBL
000
BKOR
000
x
SERVICE
50
S VIDEO 1
software
service data
reserved
power on time
release ID
version
in binary
for factory
color system
(decimal)
CGA01
0.16M
0000 0000
FF FF
NTSC3
00100
S_ _
: for SONY
A_ _
: for AIWA
L_ _
: BX1L Full
B_ _
: BX1L Basic
D_ _
: DVD Combo
C_ _
: CX1
Z_ _
: Sound special
_ _ _01 : Serial no. of the M/P release for each
destination
_ _ _10 ~: use for FY04 BX1
_ _SB
: Sub Hercules
  
t [DISPLAY] t 5 t [VOL $+% ] t [POWER]
1, 4
Select the adjustment item.
r
3, 6
Raise/lower the data value.
r
[MUTING]
Writes.
r
-
Executes the writing.
For BP Board Version; and PF Engine Version;
Category and release ID will be different.
The rest are the same.
BP Board Version
item no.
item
category
in decimal
name
SUBP
000
10XH
software
release ID
version
CBP01
0.06
PF Engine Version
item no.
item
category
in decimal
name
9090
000
software
release ID
version
PF 0018M
– 16 –
KV-DA29M81
RM-W105
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 adjustments were made.
e. OTHER FUNCTION VIA REMOTE COMMANDER
7, -
All the data becomes the values in memory.
8, -
All user control goes to the standard state.
Display, -
Service data initialization (Be sure not to use usually.)
2, 5
Select Device or Category
6-2.
ADJUSTMENT METHOD
Item Number 000 HPOS
This explanation uses H POSITION as an example.
1. Select "000 HPOS" with the 1 and 4 buttons, or 2 and 5.
2. Raise/lower the data with the 3 and 6 buttons.
3. Select the optimum state. (The standard is IF for PAL reception.)
4. Write with the [MUTING] button. (The display changes to WRITE.)
5. Execute the writing with the - button. (The WRITE display will be changed to red color while executing, and back
to SERVICE.)
Example on screen display :-
Use the same method for all Items. Use 1 and 4 to select the adjustment item, use 3 and 6 to adjust, write with
[MUTING], then execute the write with -.
Note : 1. In [WRITE], the data for all items are written into memory together.
2. For adjustment items that have different standard data between 50Hz or 60Hz, be sure to use the respective
input signal after adjustment.
Adjusted with 
[3] and [6] buttons.
GREEN
WHBL
000
BKOR
000
SERVICE
50
VIDEO 1
write with 
[MUTING].
GREEN
WHBL
000
BKOR
000
WRITE
50
VIDEO
1
WHBL
000
BKOR
000
WRITE
50
VIDEO
1
Write executed with 
[0].
RED
The WRITE display
then returns to green
SERVICE
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