DOWNLOAD Sony KV-SR25M53K Service Manual ↓ Size: 7.79 MB | Pages: 81 in PDF or view online for FREE

Model
KV-SR25M53K
Pages
81
Size
7.79 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-sr25m53k.pdf
Date

Sony KV-SR25M53K Service Manual ▷ View online

– 11 –
KV-SR25M53K
RM-W109
(2) Dynamic Convergence Adjustment
Preparation:
Before starting this adjustment, adjust the horizontal  and
the vertical static convergence
7. 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.
Neck assy
Neck assy
Red
Blue
Red
Blue
VM board
VM board
R B
R B
TLH
TLV
YCH
XCV
B
R
R
B
DY pocket
(XCV)
DY pocket
TLH Plate
YCH
TLV
(XCV)
ON DY:
(3) Screen-corner Convergence
If you are unable to adjust the corner convergence
properly, this can be corrected with the use Permaloy
Assy Correction.
1. Affix the  Permaloy Assy Correction corresponding to the
misconverged areas.
TLV
Rotate TLV-2 VOL (29", 34") on DY
XCV
Rotate XCV
Adj core on DY
YCH
Rotate YCH
VOL on DY
TLH
Insert
TLH
Correction Plate to DY Pocket
(Left or Right)
b
a
c
d
a-d : screen-corner
        misconvergence
a
b
c
d
a to d : Permaloy Assy Correction 
Fix a Permaloy Assy Correction 
to the misconverged areas 
– 12 –
KV-SR25M53K
RM-W109
2-4. G2 (SCREEN) ADJUSTMENTS
1. Set the  PICTURE to Normal.
2. Go to Service mode. Set WHBL 016 RGBB lat to 01.
3.  Connect R,G,B of the  C board cathode to the
oscilloscope.
4. Adjust cathode voltage to the value below.
5. Adjust G2 (screen) on the FBT until picture shows the
point before cut off.
Cathode setting voltage:
170 V 
± 2 (VDC)
2-3. FOCUS ADJUSTMENT
FOCUS adjustment should be completed before W/B
adjustment.
1. Receive digital monoscope pattern.
2. Set "Picture Mode" to "DYNAMIC". (Multi), Set "Picture
Mode to Vivid (NTSC).
3. a) Adjust focus VR so that the center of screen
becomes just focus (except 25").
b) Adjust focus VR so that the lion teeth
becomes just focus (25").
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.
2-5. WHITE BALANCE ADJUSTMENT
1. Set to Service Mode (Refer Section 3-1:
ADJUSTMENTS WITH COMMANDER).
2. Input white raster signal.
3. Set Picture to DYNAMIC. Intelligent Picture: ON.
i. For SA & SR set OPTB 006 OPB 6 to 00.
4. Select WHBL 002"RDRV" and adjust the value to 37
5. Select WHBL 003"GDRV" and 004 "BDRV"and adjust
the data for the best white balance in highlight condition.
6. Adjust WHBL 000 "BKOR" and 001 "BKOG"and adjust
the data for best white balance cut-off condition.
7. Write into the memory by pressing [MUTING] then 
-
.
8. Write offset data for other mode.
After adjustment, please reset:
i. OPTM 006 – OPB 6 to original data (SA & SR series).
Adjust
Offset
Offset
18000
t 12363 t 9300
BKOR
–2
–3
BKOG
+1
+2
RDRV
0
0
GDRV
–3
–8
BDRV
–8
–18
2-6. SUB BRIGHT ADJUSTMENT
1. Set to service mode.
2. Brightness set to 50%, Picture: Minimum.
3. Select WHBL 010 SBRT with 
1
 and 
4
, and adjust
'SBRT' data with 
3
 and 
6
 so that the third stripe from
right dimly lit.
4. Copy the adjusted data "WHBL" 010 SBRT in RF to
Video Mode.
5. Write into the memory by pressing [MUTING] then 
-
.
6. Models cut-off: 10 IRE
Slightly Glimmer: 20 IRE + 2 steps
FLYBACK TRANSFORMER  (T503)
Focus
Screen
– 13 –
KV-SR25M53K
RM-W109
SECTION 3
CIRCUIT ADJUSTMENTS
3-1. ADJUSTMENT WITH COMMANDER
Service adjustments to this model can be performed using the supplied remote commander RM-W109.
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.
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.
  
t [DISPLAY] t 5 t [VOL $+% ] t [POWER]
Item no.
Service data
NVM
Service
Field
Channel no./
Category
in decimal
Item name
in decimal
NG
Command
Frequency
Video Input Name
GEOM
006
EWPW
031
x
SERVICE
60
S VIDEO 1
Software
Service data
Reserved
Power On Time
Release ID
Version
in binary
for factory
Color System
(decimal)
SUS01
3.50M
0001 1111
FF FF
NTSC3
65553
Status SID,
Lock, SL
:not locked
(no signal)
Status
Status BC,
Status
Status S/N
Status
Status Display
:locked
VW, IVWF
HBC
BCF
LEVEL (0-7)
GL
Area
111
11
11
1
7
11
ZZ xy 1 1 000000 000000
Status
PTW
S
: for Sony
A
: for AIWA
L
: BX1L Full
B
: BX1L Basic
D
: DVD Combo
U S : Taiwan/Korea/Philippines
G A : General Area
01 : Serial no. of the M / P release for each destination
1, 4
Select the adjustment item.
r
3, 6
Raise/lower the data value.
r
[MUTING]
Writes.
r
-
Executes the writing.
ZZ : DCXO Flash Value
xy : Value of x
:
Value of y
0 - unknown
0 - Mono
1 - BTSC
1 - Stereo
2 - A2
2 - Bilingual
3 - NICAM
4 - SAP/Single
4 - KOREAN
5 - Japan
6 - AV Stereo
– 14 –
KV-SR25M53K
RM-W109
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 (Up, Down)
3-2. 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 excuting, 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.
031
1111
50
NTSC3 65553
EWPW
0001
GEOM
SUS01
006
3.50M
FF FF
SERVICE
031
1111
50
NTSC3 65553
EWPW
0001
GEOM
SUS01
006
3.50M
FF FF
WRITE
031
1111
50
NTSC3 65553
EWPW
0001
GEOM
SUS01
006
3.50M
FF FF
WRITE
GREEN
GREEN
Write with 
[MUTING]
Write executed with 
RED
The WRITE display
then the display
returns to green
SERVICE.
Adjusted with 
and 
6 buttons.
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