Sony TRINITRON KV-T25SZ8 User manual

MODEL COMMANDER DEST. CHASSIS NO.
KV-T25SZ8 RM-870 Australia SCC-J99F-A
SERVICE MANUAL
MODEL COMMANDER DEST. CHASSIS NO.
TRINITRON ® COLOR TV
BG-1S CHASSIS

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KV-T25SZ8
RM-870
SPECIFICATIONS
Note
Power requirements 110-240 V AC, 50/60 Hz
Power consumption (W) Indicated on the rear of the TV
Television system B/G
Color system PAL, PAL 60, NTSC4.43, NTSC3.58(AV IN)
Stereo system A2 Stereo (German) B/G
Channel coverage VHF: 0 to 12, 5A, 9A / UHF: 28 to 69 / CATV: S01 to S03, S1 to S41
Audio output (speaker) 5W ×2
Inputs Antenna: 75 ohms
VIDEO IN jacks: phono jacks
Video: 1 Vp-p, 75 ohms
Audio: 500 mVrms, high impedance
Outputs Headphone jack: minijack
MONITOR OUT jacks: phono jacks
Video: 1 Vp-p, 75 ohms
Audio: 500 mVrms
Picture tube 25 in.
Tube size (cm) 64 Measured diagonally
Screen size (cm) 60 Measured diagonally
Dimensions (w/h/d, mm) 613 ×542 ×472
Mass (kg) 32
Design and specifications are subject to change without notice.
CAUTION
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND
THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR
CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK !ON
THE SCHEMATIC DIAGRAMS, EXPLODED VIEWSAND IN THE
PARTS LIST ARE CRITICALTO SAFE OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART
NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.

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KV-T25SZ8
RM-870
TABLE OF CONTENTS
1. GENERAL.................................................................... 4
2. DISASSEMBLY
2-1. Rear Cover Removal............................................ 9
2-2. A Board Removal ................................................ 9
2-3. F1 Board Removal ............................................... 9
2-4. Service Position ................................................... 9
2-5. Replacement of Parts ........................................... 10
2-6. Demagnetization Coil Removal .......................... 10
2-7. Picture Tube Removal.......................................... 11
3. SET-UP ADJUSTMENTS
3-1. Beam Landing ...................................................... 12
3-2. Convergence......................................................... 13
3-3. Focus Adjustment ................................................ 15
3-4. G2 (Screen) and White Balance Adjustments ..... 15
4. SELF DIAGNOSIS FUNCTION............................. 16
5. CIRCUIT ADJUSTMENTS
5-1. Adjustments with Commander ............................ 17
5-2. Adjustment Method ............................................. 18
5-3. A Board Adjustment after IC003 (Memory)
Replacement......................................................... 21
5-4. Picture Distortion Adjustment ............................. 21
6. DIAGRAMS
6-1. Block Diagram ...................................................... 23
6-2. Circuit Boards Location ....................................... 27
6-3. Schematic Diagrams and Printed Wiring Boards. 27
(1) Schematic Diagram of A Board............................ 31
(2) Schematic Diagrams of A3, F1, C and
VM Boards............................................................ 35
6-4. Semiconductors..................................................... 43
7. EXPLODED VIEW
7-1. Chassis .................................................................. 45
8. ELECTRICAL PARTS LIST.................................... 47
Section Title Page Section Title Page

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KV-T25SZ8
RM-870
SECTION 1
GENERAL
The operating instructions mentioned here are partial abstracts from the
Operating Instructions Manual. The page numbers of the Operating
Instruction Manual remain as in this manual.
2
3
AUTO PROGR
AUTO PROGR

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KV-T25SZ8
RM-870
Getting Started
4
Connections
Connecting a VHF antenna or a combination VHF/UHF antenna
— 75-ohm coaxial cable (round)
Attach an optional IEC antenna connector to the 75-ohm coaxial cable.
Plug the connector into the (antenna) socket at the rear of the TV.
Rear of TV
or
On a wall
Rear of TV
Getting Started
to video
and audio
outputs
to antenna socket
to antenna
output VCR
VIDEO IN
: Signal flow
Rear of TV
VIDEO
IN
MONITOR
OUT
VIDEO
L
(MONO)
AUDIO
R
Connecting optional equipment
You can connect optional audio/video equipment to your TV such as a VCR, multi disc player, camcorder, video
game or stereo system.
Connecting video equipment using video input jacks
When connecting a monaural VCR
Connect the yellow plug to VIDEO and the black
plug to AUDIO-L (MONO).
Getting Started
5
Front of TV
EN
When using the video input jacks
Do not connect video equipment to the video input jacks at the front and the rear of your TV simultaneously; otherwise the picture will
not be displayed properly on the screen.
to video and
audio outputs
to antenna
socket
MONITOR OUT
Rear of TV
to antenna
output
to video
and audio
inputs
: Signal flow
or
VCR
Audio system
VIDEO
IN
MONITOR
OUT
VIDEO
L
(MONO)
AUDIO
R
Connecting audio/video equipment using MONITOR OUT jacks
VIDEO L (MONO)
VIDEO INPUT
AUDIO
R
: Signal flow
Camcorder
When recording through the MONITOR OUT jacks
If you change the channel or video input while recording with a VCR, the channel or video input you are recording also will be changed.
CAUTION
Do not connect the power cord until you have completed making all other connections; otherwise a minimum leakage
current might flow through the antenna and other terminals to ground.

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KV-T25SZ8
RM-870
7
Operations
123
46
789
÷0
5
Watching the TV
Switching off the TV
To switch off the TV temporarily, press POWER on the
remote commander.
To switch off the TV completely, press POWER on the
TV.
If the power on the TV is turned off in standby mode,
the STANDBY indicator may remain alight for a while.
Watching the video input
Press VIDEO/HOLD.
1 Press POWER to turn the TV on.
To scan through channels
Press PROGR +/– until the channel you want
appears.
3 Press VOL +/– to adjust the volume.
When the TV is in standby mode after pressing
POWER, press POWER on the remote commander.
2 Select the TV channel you want to watch.
To select a channel directly
Press a number button.
To select a two-digit channel, press “-/--” before
the number buttons.
For example: to select channel 25, press “-/- -,” and
then “2” and “5.”
POWER
Operations
HOLD
VIDEO
VIDEO 1
POWER
÷2 5
VOL
PROGR
POWER
To watch TV, press TV.
Muting the sound
Press MUTING.
MUTING
MUTING
TV
Getting Started
6
MANUAL PROGR
COLOR SYSTEM SELECT
TV SYSTEM
AUTO PROGR
POWER
Presetting channels
Presetting channels automatically
You can preset up to 80 TV channels in numerical
sequence from program position 1.
Front of TV
Note
•TV SYSTEM button is not used for this model.
1
Press POWER.
When the TV is in standby mode after pressing
POWER, press POWER on the remote commander.
2 Press AUTO PROGR.
To start presetting channels automatically
from the specified program position
1Press MANUAL PROGR.
2Press PROGR +/– to select the program position.
3Press AUTO PROGR.
1
2
Presetting channels
1
2
123 1
AUTO PROGR
POWER
Presetting channels manually
To change the channel for a particular program
position or to receive a channel with a weak signal,
preset the channel manually.
1 Press MANUAL PROGR.
2
Press PROGR +/– until the required program
position appears on the screen.
3 Press VOLUME +/– on the TV until the
required channel picture appears on the
screen.
4 Press MANUAL PROGR.
Disabling program positions
By disabling unused or unwanted program positions,
you can skip those positions when you press PROGR
+/–.
1 Press PROGR +/– until the unused or
unwanted program position appears on the
screen.
2 Press MANUAL PROGR.
3
Press PIC MODE on the remote commander.
4 Press MANUAL PROGR.
To cancel the skip setting
Preset the channel manually or automatically again.

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KV-T25SZ8
RM-870
8
Operations
INDEX
WAKE UP
1
AUTO B/G
STANDARD
REVEAL
DISPLAY
Displaying on-screen information
Press DISPLAY/REVEAL.
The program position, local system, and TV settings are
displayed on the screen.
•The last TV program position or video mode just before the TV
turns into standby mode will appear when the TV is turned on
using the Wake Up Timer.
•If no buttons or controls are pressed for more than two hours
after the TV is turned on using the Wake Up Timer, the TV
automatically turns into standby mode. When you want to
continue watching the TV, press any button or control on the
TV or remote commander.
After 30 minutes After 60 minutes
After 90 minutes
No sleep timer
SLEEP
Setting the Wake Up Timer
You can set the TV to turn on automatically after the
period of time you want.
1
Press WAKE UP/INDEX repeatedly to set the
timer.
The on-screen display appears and the WAKE UP
indicator lights up.
2 If you want a particular TV program or
video input to be displayed using the Wake
Up Timer, select the TV program or video
mode.
3 Press POWER on the remote commander or
set the Sleep Timer to turn off the TV in
standby mode.
To cancel the Wake Up Timer, press WAKE UP/INDEX
repeatedly until “WAKE UP TIMER: OFF” appears, or
turn off the main power of the TV.
Notes
•The Wake Up Timer starts immediately after the on-screen
display disappears.
SLEEP TIMER:30M SLEEP TIMER:60M
SLEEP TIMER:OFF SLEEP TIMER:90M
WAKE UP TIMER:10M
WAKE UP TIMER:OFF WAKE UP TIMER:12H00M
After 10 minutes
No wake up timer After 12 hours
Setting the Sleep Timer
You can set the TV to turn off automatically after the
period of time you want.
Press SLEEP.
To cancel the Sleep Timer, press SLEEP repeatedly
until “SLEEP TIMER: OFF” appears, or turn the TV off.
Changing the on-screen display
language
If you prefer Chinese to English, you can change the
on-screen display language. You can use buttons on the
remote commander or the TV.
1
Press SELECT until the screen appears as
follows:
2
Press + or – to select “⁄⁄⁄ ”.
Note
•You can also use VOLUME +/– on the TV to select the
on-screen display language.
+ or -
SELECT
SELECT
LANGUAGE : ENGLISH
LANGUAGE /»y¤¥ : ENGLISH
LANGUAGE :
»y¤¥ / LANGUAGE : ⁄⁄⁄
9
Operations
Each time you press SELECT, the screen changes as
follows:
2 Press + or – to adjust the item.
3 To adjust other items, repeat steps 1 and 2.
Note
•You can also use VOLUME +/– on the TV to adjust the picture
and sound settings.
If the color of the picture is abnormal
Press COLOR SYSTEM or adjust the color setting until
the color becomes normal.
Note
•Normally set COLOR SYSTEM to AUTO.
Front of TV
Note
•TV SYSTEM button is not used for this model.
+ or –
SELECT
PIC MODE
PIC MODE
DYNAMIC STANDARDSOFT
High contrast
picture
SELECT
Selecting the picture mode
Press PIC MODE until the mode you want
appears.
Each time you press PIC MODE, the screen changes as
follows:
Note
•If you change the picture mode after the following
adjustments, the adjustment changes in accordance with the
picture mode.
Adjusting the picture and sound
settings
1 Press SELECT until the item you want to
adjust appears.
Soft picture
(good for
video games)
(Operative for
NTSC signal only)
PICTURE COLOR BRIGHT
HUE
SHARPNESS
BASS
BALANCE TREBLE
SURROUND
TILT CORRECTION
Adjusting the picture
and sound
MANUAL PROGR
COLOR SYSTEM SELECT
TV SYSTEM
AUTO PROGR

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KV-T25SZ8
RM-870
Additional Information
12
Troubleshooting
If you have any problems, read this manual again and
check the countermeasure for each of the symptoms
listed below.
If the problem persists, contact your nearest authorized
service center or dealer.
Snowy picture
Noisy sound
/Check the antenna.
/Check the antenna connection on the TV
and on the wall.
Dotted lines or stripes
/This may be caused by local interference
(e.g. cars, neon signs and hair dryers).
Adjust the antenna for minimum
interference.
Double images or “ghosts”
/This may be caused by reflections from
nearby mountains or buildings. A highly
directional antenna may improve the
picture.
Notes
•When you switch on the TV, you may hear the “boon” sound
that is caused by the demagnetization of the TV. This does not
indicate a malfunction.
•The picture color may become abnormal if you change the
direction of your TV. To obtain the normal picture color , press
POWER on the TV to switch off the TV for five minutes and
then switch it on again.
No picture
No sound
/Press POWER.
/Check the antenna connection.
/Check the VCR connections.
/Check the power cord connection.
/Check the standby mode.
Good picture
No sound
/Press VOLUME +.
/Press MUTING.
/Press A/B/ENLARGE
No color
/Adjust the COLOR level in the on-screen
display.
/Check the COLOR SYSTEM setting.
TV cabinet creaks
/Even if the picture or the sound is normal,
changes in the room temperature
sometimes make the TV cabinet expand or
contract, making a noise. This does not
indicate a malfunction.
Note on the remote commander
•The supplied remote commander is used on several models of
the TV. If you do not find instructions for some controls that
are on the remote commander, that means your TV does not
employ the features of those controls, e.g. TEXT.
Note on the TV SYSTEM button
•The TV SYSTEM button is not used on your TV.
WARNING
Do not install the appliance in a confined space, such as
a bookcase or built-in cabinet.
Additional Information
10
Operations
Press A/B/ENLARGE repeatedly until you
receive the sound you want.
The on-screen display changes corresponding to the
selected sound and the WAKE UP/STEREO indicator
also lights up.
When receiving a A2 (German) program
Broadcasting
A2 (German) stereo
A2 (German) bilingual
Selecting a stereo or
bilingual program
ENLARGE
A/B
On-screen display
(Selected sound)
STEREO
(Stereo sound)
STEREO
zMAIN
(Main sound)
STEREO
zSUB
(Sub sound)
Receiving area for A2 (German) program
System
A2 (German)
Note
•If the signal is very weak, the sound becomes monaural
automatically.
Receiving area
Australia, Malaysia, Thailand, etc.

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KV-T25SZ8
RM-870
2-1. REAR COVER REMOVAL 2-3. F1 BOARD REMOVAL
SECTION 2
DISASSEMBLY
2-2. A BOARD REMOVAL 2-4. SERVICE POSITION
2Two screws
(BVTP 4×16)
3One screw
(BVTP 3×16)
1Two screws
(BVTP 4×16)
Lever
Lever
A board
F1 board
A board

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KV-T25SZ8
RM-870
2-5. REPLACEMENT OF PARTS
For replacement of the Multi Button, Power Button and Light Guide, cut the welded portions
from them, exchange with the new parts, and fix them with screws (+BVTP) respectively.
2-5-1. REPLACEMENT OF MULTI BUTTON
2-5-2. REPLACEMENT OF POWER BUTTON AND LIGHT GUIDE
2-6. DEMAGNETIZATION COIL REMOVAL
Two screws
(BVTP 3×12)
Two screws
(BVTP 3×12)
Cut
Light guide
Power button
3Demagnetization coil
4Tension spring
Picture tube
2DGC holder
1DGC band
Remove the claw

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KV-T25SZ8
RM-870
2-7. PICTURE TUBE REMOVAL
2Using a thumb press down then pull up the rubber cap firmly in the direction
indicated by the arrow b.
3When one side of the rubber cap is separated from the anode button, the
anode-cap can be removed by turning up the rubber cap and pulling it up in the
direction of the arrow c.
•HOWTOHANDLEANANODE-CAP
1Do not damage the surface of anode-caps with sharp shaped objects.
2Do not press the rubber too hard so as not to damage the inside of anode-caps.
A metal fitting called the shatter-hook terminal is built into the rubber.
3Do not turn the foot of rubber over too hard.
The shatter-hook terminal will stick out or damage the rubber.
•REMOVAL OF ANODE-CAP
NOTE : After removing the anode, short circuit the anode of the picture tube and the
anode cap to the metal chassis, CRT shield or carbon paint on the CRT.
•REMOVING PROCEDURES
1Turn up one side of the rubber cap in the direction indicated by the arrow a.
2 A board
5 Deflection yoke
Cushion
6 Four screws
(Tapping screws)
1 Anode cap
4 C board
3 F1 board
7 VM board
a
a
b
b
c
Anode button

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KV-T25SZ8
RM-870
•The following adjustments should be made when a complete
realignment is required or a new picture tube is installed.
•These adjustments should be performed with rated power
supply voltage unless otherwise noted.
Controls and switch should be set as follows unless otherwise noted:
PICTURE control........................................................... normal
BRIGHTNESS control................................................... normal
Perform the adjustments in the following order :
1. Beam Landing
2. Convergence
3. Focus
4. White Balance
Note : Test Equipment Required.
1. Color-bar/Pattern Generator
2. Degausser
3. Oscilloscope
SECTION 3
SET-UP ADJUSTMENTS
.................................................................................................................................................................................................................................
Fig. 3-4
Fig. 3-3
GREEN
BLUE RED
Fig. 3-2
}normal
Purity control
Deflection yoke positioning
corrects these areas.
Purity control corrects
this area. Disk magnets or rotatable
disk magnets correct
these areas (a-d).
a
c
b
d
ab
cd
Fig. 3-1
Neck assy
G1 G2 G3
Preparation :
•In order to reduce the influence of geomagnetism on the set's
picture tube, face it east or west.
•Switch on the power and degauss with the degausser.
3-1. BEAM LANDING
1. Input a white signal with the pattern generator.
Contrast
Brightness
2. Position neck assy as shown in Figure 3-1.
3. Set the pattern generator raster signal to a green raster.
4. Move the deflection yoke to the rear and adjust with the purity
control so that the green is at the center and the blue and the red
take up equally sized areas on each side.
(See Figures 3-1 through 3-3.)
5. Move the deflection yoke forward and adjust so that the entire
screen is green. (See Figure 3-1.)
6. Switch the raster signal to blue, then to red and verify the
condition.
7. When the position of the deflection yoke has been decided,
fasten the deflection yoke with the screw.
8. If the beam does not land correctly in all the corners, use a
magnet to adjust it.
(See Figure 3-4.)

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KV-T25SZ8
RM-870
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 in the center of the screen are separated
from each other.
2. Adjust the BMC (Hexapole) magnet so that the red, green and
blue dots are aligned in a straight line.
3. Adjust the BMC (Hexapole) magnet so that the red, green and
blue dots are balanced (ie. equal distance) on either side of the
green dot.
4. (Moving horizontally), adjust the H.STAT VR magnet so that
the red, green and blue dots converge on top of each other in
the center of the screen.
•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).
BMC (Hexapole)
V.STAT
Purity
•Operation of the V.STAT magnet.
If the V-STAT magnet is moved in the direction of the aand
barrows, the red, green and blue dots move as shown below.
B
R
B
R
ab
bb
a
b
a
b
a
R
G
B
b
B
G
R
b
ba
a
1
2
3
GG
B G R
R G B
•Operation of BMC (Hexapole) Magnet.
To align or balance the red, green and blue dots, adjust the BMC
(Hexapole) magnet as shown below.
RG B RGB R GB
RGB RGB
RGB
R G B
G
R
B
Center dot
V.STAT Magnet
C board RV 701
SCREEN (G2)

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KV-T25SZ8
RM-870
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.
(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
RGB
RGBR
G
B
RGBRGB
RGB RGB
R
G
BRGBR
G
B
RGB
(3) Screen-corner Convergence
a-d : screen-corner
misconvergence
ba
cd
Fix a Permalloy assy
corresponding to the
misconverged areas
Permalloy assembly
a
b
c
d

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KV-T25SZ8
RM-870
3-3. FOCUS ADJUSTMENT
Adjust FOCUS control on the flyback transformer for the best
focus.
a. AN ITEM OF ADJUSTMENT
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 to confirm adjustments were made.
Item
number Note
Adjustment
item Initial DATA
09 RDR 25 WHITE POINT R
0A GDR 20 WHITE POINT G
0B BDR 20 WHITE POINT B
SERVICE
MUTING
1 F
DATA
RDR
Adjustment Item
09
Item number
WRITE1 FRDR09
0
Executes the writing
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.
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 1and 4, and then set the level to 25
with 3and 6.
5) Select GDR(0A) and BDR(0B) with 1and 4 and adjust
the level with 3and 6for the best white balance.
6) Write into the memory by pressing MUTING →then -.
0 V
Focus
175 V DC

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KV-T25SZ8
RM-870 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
1
—
—
Y/C JUNGLE
(IC300)
3
—
—
—
—
TONE
CONTROL
(IC201)
6

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KV-T25SZ8
RM-870
Entering service mode
With the unit on standby
↓
DISPLAY
↓
5
↓
VOL (+)
↓
POWER
The operation sequence puts the unit into service mode.
SECTION 5
CIRCUIT ADJUSTMENTS
5-1. ADJUSTMENTS WITH COMMANDER
Service adjustments are made with the RM-870 that comes with
this unit. [1], [4] Raise/lower the service item number
[3], [6] Raise/lower the data
[MUTING] Writes
[0] Executes the writing
[7], [0] All the data becomes the values in memory
[8], [0] All user control goes to the standard state
[5], [0] Service data initialization (Be sure not to use
usually.)
[2], [0] Write 50Hz adjustment data to 60Hz, or vice
versa.
The screen display is :
[1], [4] Select the adjustment item.
↓
[3], [6] Raise/lower the data.
↓
[MUTING] Writes
↓
[0] Executes the writing.
MUTING
TEXT VIDEO
HOLD TV
TEXT CLR
+ SELECT
PIC MODE
A/B
ENLARGE
WAKE UP
INDEX
VOL PROGR
SLEEP
+
1 2 3
4 5 6
7 8 9
0
DISPLAY
REVEAL POWER
+
÷
SERVICE Mode08
DATA
RGB
50 Depends on the signals
PAL, SECAM : 50
NTSC : 60
10000000
Adjustment item
00
Item number
RM-870

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KV-T25SZ8
RM-870
5-2. ADJUSTMENT METHOD
Item Number 08
This explanation uses V-SHIFT as an example.
1. Select 08 V-SHIFT with the [1] and [4] buttons.
2. Raise/lower the data with the [3] and [6] buttons.
3. Select the optimum state. (The standard is 0F for PAL
reception.)
4. Write with the [MUTING] button.
5. Execute the writing with the [0] button. (The WRITE
display will be changed to green SERVICE.)
Use the same method for Items Number 00-4B. Use [1] and [4] to
select the adjustment item, use [3] and [6] to adjust, write with
[MUTING], then execute the write with [0].
WRITE
WRITE
GREEN0CVSF08
SERVICE
50
50
50
GREEN0CVSF08
Adjust with the [3] and [6] buttons.
Written with the [MUTING].
Write executed with [0].
GREEN
The WRITE display
will be changed back to
SERVICE.
0CVSF08

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KV-T25SZ8
RM-870
Adjustment Item Table
Data
range Initial
data Standard data Note Device
Item Adjustment
number Item
00 HSF 00–3F 24 50: 1F 60: 1F H SHIFT TDA8375
01 HSZ 00–3F 23 50: 1F 60: 1F H SIZE TDA8375
02 PAP 00–3F 21 50: 2E 60: 2D PIN AMPLITUDE TDA8375
03 CNP 00–3F 29 50: 23 60: 26 CORNER PIN TDA8375
04 TLT 00–3F 20 50: 21 60: 25 TILT TDA8375
05 VSL 00–3F 20 50: 20 60: 20 V SLOPE TDA8375
06 VAP 00–3F 1D 50: 38 60: 34 V AMPLITUDE TDA8375
07 SCR 00–3F 20 50: 20 60: 20 S CORRECTION TDA8375
08 VSF 00–3F 20 50: 2A 60: 2B V SHIFT TDA8375
09 RDR 00–3F 25 26 WHITE POINT R TDA8375
0A GDR 00–3F 20 WHITE POINT G TDA8375
0B BDR 00–3F 20 WHITE POINT B TDA8375
0C FO 00–02 00 TV: 00 VIDEO: 00 TEXT: 01 PHI-1 TIME CONSTANT TDA8375
0D AGC 00–3F 30 TV: 2A VIDEO: 2A TEXT: 2A AGC TAKE OVER TDA8375
0E VSW 00–01 00 TV: 00 VIDEO: 01 TEXT: 00 VIDEO MUTE TDA8375
0F FOR 00–03 00 03 FORCED FIELD FREQ. TDA8375
10 DL 00–01 00 INTERLACE TDA8375
11 POC 00–01 00 SYNCHRO MODE FIX TDA8375
12 VID 00–01 00 VIDEO IDENT MODE TDA8375
13 HCO 00–01 00 EHT TRACKING MODE TDA8375
14 EVG 00–01 00 ENABLE V GUARD TDA8375
15 SBL 00–01 00 SERVICE BLANKING TDA8375
16 PRD 00–01 00 OVER-VOLTAGE INPUT TDA8375
17 COR 00–01 00 NOISE CORING PEAK TDA8375
18 PMX 00–3F 27 Others: Normal: 2C PICTURE MAX DATA TDA8375
19 PMI 00-3F 05 Others: Normal: 04 PICTURE MIN DATA TDA8375
1A SBR 00–7F 4B Others: Normal: 54 SUB-BRIGHTNESS TDA8375
1B SHU 00–0F 07 SUB-HUE TDA8375
1C SSH 00–03 01 TV: 01 VIDEO: 02 SUB-SHARPNESS TDA8375
1D SC1 00–3F 1F 50: 26 60: 29 SUB-COLOR LOWER TDA8375
1E SC2 00–3F 0B 50: 0C 60: 0F SUB-COLOR HIGHER TDA8375
1F AIP 00–7F 3F ADJUSTMENT IF PLL TDA8375
20 VZM 00–3F 19 VERTICAL ZOOM TDA8375
21 FAW 00–FF 08 NICAM FAW THRESH MSP3410
22 CTM 00–FF 08 NICAM ERROR BIT (MONO) MSP3410
23 CTN 00–FF 50 NICAM ERROR BIT (NICAM) MSP3410
24 WCD 00–FF 0A W. G. CHANGE DATA MSP3410
25 WST 00–FF 15 W. G. STEREO CUT POINT MSP3410
26 WTM 00–FF 50 W. G. TIMER CHANGE MSP3410
27 WBT 00–FF EA W. G. BILINGUAL MSP3410
28 ACG 00–01 01 AGC AUTO/CONST. MSP3410
29 CDB 00–3F 28 AGC GAIN CONST. MSP3410
2A FGP 00–7F 24 FM (BG, I, DK) PRESCALE MSP3410
2B FMP 00–7F 40 FM (M) PRESCALE MSP3410
2C WGP 00–7F 3C W. G. PRESCALE MSP3410
2D NIP 00–7F 7F NICAM PLESCALE MSP3410
2E CRM 00–01 00 CARRIOR MUTE MSP3410
2F CMI 00–03 00 CARRIOR MUTE LEVEL MSP3410
30 ACO 00–01 01 AUDIO CLOCK OUT MSP3410
31 WAC 00–0F 01 W.G.AGREEMENT COUNT MSP3410
32 DLY 00–FF 30 STEREO SEARCH DELAY MSP3410
33 DLG 00–FF 10 W/G SEARCH DELAY MSP3410
34 TXP 00–0F 09 0D TEXT PICTURE CONT. SAA5281
35 MXP 00–0F 0D 0F TEXT MIX MODE PIC. SAA5281

– 20 –
KV-T25SZ8
RM-870
Adjustment Item Table
Data
range Initial
data Standard data Note Device
Item Adjustment
number Item
36 BKP 00–3F 00 BLK OFF PICTURE CXP85200
37 HBL 00–3F 25 H BLK LEFT WIDTH CXP85200
38 HBR 00–3F 20 H BLK RIGHT WIDTH CXP85200
39 VBH 00–7F 00 50: 60: V BLK HIGHT WIDTH CXP85200
3A VBL 00–FF FF V BLK LOW WIDTH CXP85200
3B ODL 00–FF 10 POWER ON DELAY CXP85200
3C OFR 00–0F 00 REMO. CON. RGB OUT CXP85200
3D OFM 00–0F 00 MAIN POWER RGB OUT CXP85200
3E OSH 00–3F 0A OSD POSITION H CXP85200
3F DKS 00–01 00 D/K STEREO SEARCH CXP85200
40 MUT 00–01 01 00 NO SYNC. MUTE CXP85200
41 DWZ 00–01 00 DISEBLE WIDEZOOM CXP85200
42 ABL 00–01 01 00 BRIGHT ABL CXP85200
43 DTV 00–01 00 DISABLE TV SYS KEY CXP85200
44 SCM 00–01 00 SECAM TRAP ACTIVE CXP85200
45 ROC 00–0F 07 ROTATION CENTER CXP85200
46 ROS 00–07 03 07 ROTATION STEP WID CXP85200
47 DVM 00–01 00 DISABLE VM MODE CXP85200
48 FBT 00–01 01 C/M FBT LAYER SHORT CXP85200
49 OP0 00–FF 40 Refer to table below OPTION 0 CXP85200
4A OP1 00–FF 07 Refer to table below OPTION 1 CXP85200
4B OP2 00–FF 00 Refer to table below OPTION 2 CXP85200
NOTE
•Standard Data: Those are the standard data values written on the microprocessor. Therefore, the data values of the
modes are stored respectively in the memory.
In case of a device replacement, adjustment by rewriting the data value is necessary for some items.
•50 ...................... 50 Hz data
•60 ...................... 60 Hz data
•Standard data listed on the adjustment item table are reference values, therefore it is different for every model.
ITEM INFORMATION
•10. DL: TV/MIX Mode 0=Interlace 1=Non interlace, TEXT Mode 0=Non interlace 1=Interlace
•42. ABL: Bright ABL ON/OFF ON=1 OFF=0
•49. OP0, • 4A. OP1, • 4B. OP2 :
Input data are different according to models.
AV INPUT : 00 →NO MODEL, 01 →MONO, CXA1315, 10/11 →STEREO, TDA8424
TV System : 00 →Multi model, 01 →B/G, 10 →D/K, I, 11 →B/G, D/K
NTSC, SECAM, Chin
Shrp : Dynamic Mode @ 1 →Sharpness 50%, 0 →Sharpness 70%.
VM Operation : 0 →OFF, 1 →ON
No. 49 OP0 * Input data are different according to models
Item – AV Input Shrp – – – Saudi
KV-T25SZ8 0 1 0 0 0000
No. 4A OP1
Item WIDE TILT – TV System NTSC SECAM Chin
KV-T25SZ8 0 0 0 0 1101
No. 4B OP2
Item – – – – High Dev. 100 Program – S. Video
KV-T25SZ8 0 0 0 0 0000