SONY KV-XF25M50, KV-XF25M80 Service Manual

Self Diagnosis

Supported model

SERVICE MANUAL

MODEL COMMANDER DEST. CHASSIS NO.

KV-XF25M50 KV-XF25M80

RM-954 India SCC-U22S-A RM-954 India SCC-U22T-A

MODEL COMMANDER DEST. CHASSIS NO.

BG-3S

CHASSIS

-/--

(RM-954)

TRINITRON

COLOR TV

KV-XF25M50/XF25M80

RM-954

Power requirements 110-240 V AC, 50/60 Hz Power consumption (W) Indicated on the rear of the TV Television system B/G, I, D/K, M Color system PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58

Channel coverage

B/G VHF: E2 to E12 / UHF: E21 to E69 / CATV: S01 to S03, S1 to S41 I UHF: B21 to B68 / CATV: S01 to S03, S1 to S41 D/K VHF: C1 to C12, R1 to R12 / UHF: C13 to C57, R21 to R60

M VHF: A2 to A13 / UHF: A14 to A79 /

˘ (Antenna) 75-ohm external terminal Audio output 6W + 6W Number of terminal

D (Video) Input: 3 Output: 1 Phono jacks; 1 VP-P, 75 ohms ≥ (Audio) Input: 3 Output: 1 Phono jacks; 500 mVrms

(S Video) Input: 2 Y : 1 Vp-p, 75 ohms,

2 (Headphone) Output: 1 Minijack

Picture tube 25 inch

Tube size (cm) 64 Measured diagonally Screen size (cm) 60 Measured diagonally

Dimension (w/h/d, mm) 722 × 515 × 512 Mass (kg) 39

SPECIFICATIONS

Note

CATV: Z1 to Z39, S01 to S03, S1 to S41

CATV: A-8 to A-2, A to W+4, W+6 to W+84

unbalanced, sync

negative

C :0.286 Vp-p, 75 ohms

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.

Design and specifications are subject to change without notice.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY SHADING AND MARK ! ON THE SCHEMA TIC DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

– 2 –

KV-XF25M50/XF25M80

RM-954

Section Title Page

SELF DIAGNOSIS FUNCTION................................ 4

1. GENERAL........................................................................ 8

2. DISASSEMBLY

2-1. Rear Cover Removal................................................ 22

2-2. Speaker Bracket Removal........................................ 22

2-3. Chassis Assy Removal ............................................. 22

2-4. F Bracket Removal .................................................. 22

2-5. Service Position ....................................................... 23

2-6. Replacement of Parts ............................................... 23

2-6-1. Replacement of Control Button ....................... 23

2-6-2. Replacement of Light Guide ............................ 23

2-7. Terminal Bracket Removal ...................................... 23

2-8. H3 Board Removal .................................................. 24

2-9. A and B3 Boards Removal ...................................... 24

2-10. Picture Tube Removal.............................................. 24

3. SET-UP ADJUSTMENTS

3-1. Beam Landing.......................................................... 26

3-2. Convergence............................................................. 27

3-3. Focus Adjustment .................................................... 29

3-4. G2 (Screen) and White Balance Adjustments......... 30

Section Title Page

5. DIAGRAMS

5-1. Block Diagram ......................................................... 41

5-2. Frame Schematic Diagram ...................................... 45

5-3 Circuit Boards Location .......................................... 49

5-4. Schematic Diagrams and Printed Wiring Boards ... 50

(1) Schematic Diagram of A (1/2) Board ...................... 52

(2) Schematic Diagram of A (2/2) Board ...................... 55

(3) Schematic Diagram of B2 Board ............................ 60

(4) Schematic Diagrams of H3 and VM1 Boards......... 61

(5) Schematic Diagram of B3 Board ............................ 95

(6) Schematic Diagram of F Board ............................... 71

(7) Schematic Diagram of C Board .............................. 73

5-5. Semiconductors ....................................................... 76

6. EXPLODED VIEWS

6-1. Speaker Bracket ...................................................... 79

6-2. Chassis .................................................................... 80

6-3. Picture Tube ............................................................ 81

7. ELECTRICAL PARTS LIST...................................... 82

4. CIRCUIT ADJUSTMENT

4-1. Adjustments with Commander ................................ 31

4-2. Adjustment Method ................................................. 32

4-3. Picture Quality Adjustments.................................... 37

4-4. A Board Adjustment After IC003 (Memory)

Replacement............................................................. 37

4-5. Picture Distortion Adjustment ................................. 38

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KV-XF25M50/XF25M80

RM-954

SELF DIAGNOSTIC FUNCTION

The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER lamp will automatically begin to flash. The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER lamp flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these problems occur.

1. DIA GNOSTIC TEST INDICAT ORS

When an errors occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the lamp will identify the first of the problem areas.

Result for all of the following diagnostic items are displayed on screen. No error has occured if the screen displays a “0”.

Diagnostic

Item

Description

• Power does not turn on

• +B overcurrent (OCP) or overvoltage (OVP)

• Vertical deflection stopped

• Horizontal deflection overdrive

• White balance failure (no PICTURE)

• Micro reset

No. of times

STANDBY/TIMER

lamp flashes

Does not light

2 times

5 times

—

Self-diagnostic

display/Diagnostic

result

—

002:000 or 002:001~255 003:001~255 004:001~255

at the same time

005:000 or 005:001~225

101:00 or

101:001~225

Probable

Cause

Location

• Power cord is not plugged in.

• Fuse is burned out F4601 (F)

• H.OUT Q511 is shorted. (A board)

• IC701 is shorted. (C board)

• -13V is not supplied. (A board)

• IC 503 faulty (A board)

• G2 is improperly adjusted. (Note 2)

• CRT problem.

• Video OUT IC701 is faulty. (C board)

• IC301 is faulty. (A board)

• No connection A board to C board.

• Discharge CRT (C Board)

• Static discharge

• External noise

Detected

Symptoms

• Power does not come on.

• No power is supplied to the TV.

• AC power supply is faulty.

• Power does not come on.

• Load on power line is shorted.

• Has entered standby state after horizontal raster.

• Vertical deflection pulse is stopped.

• Power line is shorted or power supply is stopped.

• No raster is generated.

• CRT cathode current detection reference pulse output is small.

• Power is shut down shortly, after this return back to normal.

• Detect Micro latch up.

Note 1: If a + B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously.

The symptom that is diagnosed first by the microcontroller is displayed on the screen.

Note 2: Refer to screen (G2) Adjustment in section 3-4 of this manual.

– 4 –

2. DISPLAY OF ST ANDBY/TIMER LIGHT FLASH COUNT

2 times

5 times

KV-XF25M50/XF25M80

RM-954

Lamp ON 0.3 sec. Lamp OFF 0.3 sec.

Lamp OFF 3 sec.

STANDBY/SLEEP lamp

Diagnostic Item Flash Count* +B overcurrent/overvoltage 2 times Vertical deflection stopped

White balance failure 5 times * One flash count is not used for self-diagnostic.

3. STOPPING THE STANDBY/TIMER FLASH

Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER lamp from flashing.

– 5 –

KV-XF25M50/XF25M80

RM-954

4. SELF-DIAGNOSTIC SCREEN DISPLAY

For errors with symptoms such as “power sometimes shuts off ” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurances of failure for confirmation on the screen:

[To Bring Up Screen Test]

In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:

[Screendisplay] / channel [5] / Sound volume [-] / Power ON

Note that this differs from entering the service mode (mode volume [+]).

Self-Diagnosis screen display

SELF DIAGNOSTIC

002 : 000 003 : 000 004 : 000 005 : 001

101 : 000

Numeral "0" means that no fault has been detected.

Numeral "1" means a fault has been detected.

5. HANDLING OF SELF-DIAGNOSTIC SCREEN DISPLAY

Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen during repairs. When you have completed the repairs, clear the result display to “0”.

Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after completion of the repairs.

[Clearing the result display]

To clear the result display to “0”, press buttons on the remote commander sequentially as shown below when the diagnostic screen is being displayed.

Channel [8] / 0

[Quitting Self-diagnostic screen]

To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.

– 6 –

6. SELF-DIAGNOSTIC CIRCUIT

KV-XF25M50/XF25M80

RM-954

FROM

CRT

FROM

[+B] Q604 C

[H] D526

[V] Q509/507

4635

IC001

SYSTEM

IO-8DAT

O-LED

IO-SDAT

IC301

Y/CHROMA JUNGLE

IK-IN

MP/

18 51

PROTECT

SDA

MEMORY

B-DAT

54521

IC003

[+BovercurrentªOCPº] Occurs when an overcurrent on the +B(135) line is detected by Q604. If Q604 go to ON

and the voltage to pin 18 of IC301 should go down when V.SYNC is more than seven verticals in a period, the unit will automatically turn off.

[Verticaldeflectionstopped] Occurs when an absence of the vertical deflection pulse is detected by Q509 and IC001

shut down the power supply.

[Verticaldeflectionovercurrent] Occurs when an overcurrent on V drive line is detected by Q507. Power supply will be

shut down when detect this by IC001.

[Whitebalancefailure] If the RGB levels* do not balance or become low level within 5 seconds, this error will be

detected by IC301. TV will stay on, but there will be no picture.

* (Refers to the RGB levels of the AKB detection Ref pulse that detects IK.)

– 7 –

KV-XF25M50/XF25M80

WARNING

• Dangerously high voltages are present inside the TV.

• Operate the TV only between 110 – 240 V AC.

To prevent fire or shock hazard, do not expose the TV to rain or moisture.

Do not operate the TV if any liquid or solid object falls into it. Have it checked immediately by qualified personnel only.

Do not install the TV in hot, humid or excessively dusty places.

Do not install the TV in a confined space, such as a bookcase or built-in cabinet. Do not block the ventilation openings of the TV.

Install the TV in a stable position. Do not allow children to climb onto it.

Do not plug in too many appliances to the same power socket. Do not damage the power cord.

Clean the TV with a dry and soft cloth. Do not use benzine, thinner, or any other chemicals to clean the TV. Do not scratch the picture tube.

Do not open the cabinet and the rear cover of the TV. Refer servicing to qualified personnel.

Pull the power cord out by the plug. Do not pull the power cord itself. Disconnect the TV if you are not going to use it for several days.

For your own safety, do not touch any part of the TV, the power cord and the antenna cable during lightning storms.

Using Your New TV

Getting Started

Step 1

Connect the antenna

If you wish to connect a VCR, see the “Connecting a VCR” diagram below.

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.

Connecting a VCR

To watch the video, see page 9.

Using Your New TV

IEC connector (not supplied)

To video and audio outputs

VCR

(yellow)

-L (MONO) (white)

-R (red)

To S video output

Antenna cable (not supplied)

To … 1 or 2 (video input)

Audio/Video cable (not supplied)

S video cable (not supplied)

: Signal flow

To (S video input)

To antenna output

To ˘ (antenna)

: Signal flow

Antenna cable (not supplied)

Rear of TV

VIDEO

VIDEO IN

VIDEO OUT

AUDIO

WOOFER

(8Ω)

The operating instructions mentioned here are partial abstracts from the Operating Instruction Manual. The page numbers of the Operating Instruction Manual remain as in the manual.

– 8 –

SECTION 1

GENERAL

RM-954

Using Your New TV

Front of TV

Notes

• If you connect a monaural VCR, connect the yellow plug to

(the yellow

jack) and the black plug to

-L (MONO) (the white jack).

• If you connect a VCR to the ˘ (antenna) terminal, preset the signal output from the VCR to the program number 0 on the TV.

• If both

(S video input) and … 1 (video input) at the rear of your TV

are input at the same time, the

(S video input) is automatically

selected. To view … 1 (video input), disconnect the S video cable.

• When no signal is input to the connected video equipment, the TV screen becomes blue.

Step 2

Insert the batteries into the remote

Note

• Do not use old batteries nor use different types of batteries together.

Step 3

Preset the channels automatically

Tips

• If you want to stop the automatic channel presetting, press MENU twice.

• If your TV has preset an unwanted channel or cannot preset a particular channel, then preset your TV manually (see page 21 and 22).

Note

• During automatic channel presetting, your TV screen will indicate “B/G”, “I”, “D/K” or “M” for the TV system (TV SYS).

Now You Are Ready. . .

To watch your TV, see page 8.

AUTO

PROGR

ONE-PUSH AUTOMATIC PROGRAMMING

PROGR

Using Your New TV

Connecting optional components

You can connect optional audio/video components, such as a VCR, multi disc player, camcorder, video game or stereo system.

To watch the picture of the connected equipment, see page 9.

Connecting a camcorder/video game equipment using the … (video input) jacks

Notes

• You can also connect video equipment to the … 1 or 2 (video input) jacks at the rear of your TV.

• If both

(S video input) and … 3 (video input) at the front of your TV

are input at the same time, the

(S video input) is automatically

selected. To view … 3 (video input), disconnect the S video cable.

Connecting audio/video equipment using the Ú (monitor output) jacks

Note

• When connecting a monaural VCR, connect the yellow plug to

(the

yellow jack) and the black plug to

-L (MONO) (the white jack).

To S video output

Front of TV

Camcorder

Video game equipment

To video and audio outputs

: Signal flow

To (S video input)

To… 3 (video input)

Audio/Video cable (not supplied)

S video cable (not supplied)

(yellow)

-L (MONO)

(white)

-R (red)

Rear of TV

To antenna output

To video and audio inputs

Audio system

To audio inputs

VCR

: Signal flow

To Ú (monitor output)

Antenna cable (not supplied)

Audio/Video cable (not supplied)

WOOFER

(8Ω)

(

MONO

)

– 9 –

KV-XF25M50/XF25M80

RM-954

Using Your New TV

Watching the TV

This section explains functions used while watching TV. Most operations can be done using the remote.

Press U to turn on the TV.

When the TV is in the standby mode (the u indicator on the TV is lit red), press u on the remote or PROGR +/– on the TV.

Press PROGR +/– or number buttons to select the TV program.

For double digit numbers, press ÷, then the number (e.g., for 25, press ÷, then 2 and 5).

Press . +/– to adjust the volume.

u …

;

Number buttons

JUMP

. +/–

PROGR +/–

MENU +/–/ENTER

u indicator

1 4 7

-/--

2 5 8 0

3 6 9

FAVORITE

SOUND

MODE

PIC MODE

ENTER

A/B

SURROUND

8 0

-/--

Using Your New TV

Securing the TV

To prevent the TV from falling, secure the TV using one of the following methods:

With the supplied screws, attach the band to the TV stand and to the rear of the TV using the provided hole.

Put the cord or chain through the clamps to secure the TV against a wall or pillar.

Note

• Use only the supplied screws. Use of other screws may damage the TV.

20 mm

3.8 mm

– 10 –

KV-XF25M50/XF25M80

RM-954

Using Your New TV

Turn off temporarily Turn off completely Mute the sound Watch the video input

(VCR, camcorder, etc.)

Jump back to the previous channel Display the on-screen information*

* The picture, sound, and either the program number or video mode are

displayed. The on-screen display for the picture and sound information disappears after about 3 seconds.

Changing the menu language

You can change the menu language as well as the on-screen language. For details on how to use the menu, see “How to use the menu” on page 15.

Do this

Press u. The

indicator on the TV lights up red. Press U on the TV. Press ¤. Press …

to select “VIDEO 1”, “VIDEO 2” and “VIDEO 3”. To return to the TV program, press ;.

Press JUMP. Press

Additional tasks

Press MENU.

Press + or – to select the SET UP icon (

), then

press ENTER.

Make sure “LANGUAGE/

”

is selected, then press ENTER.

Press + or – to select “

”, then press ENTER.

The menu language changes to Arabic.

To return to the normal screen

Press MENU.

ENTER

continued

Using Your New TV

Setting the Wake Up timer

Press until the desired period of time appears.

The Wake Up timer starts immediately after you have set it.

Select the TV program or video mode you want to display when you wake up.

Press u or set the Sleep timer if you want the TV to turn off automatically.

The indicator on the TV lights up orange.

To cancel the Wake Up timer

Press

until “WAKE UP TIMER: OFF” appears or turn off the

TV’s main power.

Note

• 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 goes into the standby mode. To continue watching the TV, press any button or control on the TV or the remote.

Setting the Sleep timer

Press until the desired period of time appears.

The Sleep timer starts immediately after you have set it.

To cancel the Sleep timer

Press

until “SLEEP TIMER: OFF” appears or turn the TV off.

WAKE UP TIMER:10M

WAKE UP TIMER:OFF

WAKE UP TIMER:12H00M

After 10 minutes

No Wake Up Timer After 12 hours

SLEEP TIMER:30M

SLEEP TIMER:60M

SLEEP TIMER:OFF

SLEEP TIMER:90M

After 30 minutes

No Sleep Timer

After 60 minutes

After 90 minutes

Watching the TV (continued)

– 11 –

KV-XF25M50/XF25M80

RM-954

Advanced Operations

Press FAVORITE.

Press the number button from 1 to 6 to select the desired channel.

Tip

• To program your favorite channels, see “Programming your favorite channels” on page 18.

Viewing your favorite channels

You can display and select six of your favorite channels directly from your TV screen.

Number buttons

FAVORITE

1 4 7

-/--

2 5 8 0

3 6 9

FAVORITE

SOUND

MODE

PIC MODE

ENTER

A/B

SURROUND

FAVORITE

Advanced Operations

Selecting the picture and sound modes

You can select picture and sound modes and adjust the setting to your preference in PERSONAL option.

Selecting the picture mode

Press PIC MODE repeatedly until you get the desired picture mode.

Select To

DYNAMIC receive high contrast pictures. STANDARD receive normal contrast pictures. SOFT receive mild pictures. PERSONAL receive the last adjusted picture setting from the ADJUST

option in the A/V CONTROL menu (see page 17).

Selecting the sound mode

Press SOUND MODE repeatedly until you get the desired sound mode.

Select To

DYNAMIC listen to dynamic and clear sound that emphasizes the low and

high tones. DRAMA listen to sound that emphasizes voice and high tones. SOFT receive soft sound. PERSONAL receive the last adjusted sound setting from the ADJUST option

in the A/V CONTROL menu (see page 17).

Tip

• You can also set the picture and sound modes using the menu (see “Changing the A/V CONTROL setting” on page 16).

FAVORITE

SOUND

MODE

PIC MODE

ENTER

A/B

SURROUND

PERSONAL

STANDARD

SOFT

DYNAMIC

PIC MODE

≥

DYNAMIC

≥

DRAMA

≥

SOFT

≥

PERSONAL

SOUND

MODE

SOUND MODE PIC MODE

Advanced Operations

– 12 –

KV-XF25M50/XF25M80

RM-954

Advanced Operations

Select To

HIGH listen to sound that spreads out over a large area, giving the feeling

of being at a concert hall. LOW listen to the sound that gives the feeling of being at a live concert. OFF turn off the surround sound.

The surround of your TV is categorized as TruSurround.

is a trademark of SRS Labs, Inc. SRS and the SRS symbol are

registered trademarks of SRS Labs, Inc. in the United States and selected foreign countries. SRS and TruSurround are incorporated under license from SRS Labs, Inc. and are protected under United States Patent Nos. 4,748,669 and 4,841,572 with numerous additional issued and pending foreign patents.

Press SURROUND repeatedly until you receive the desired surround sound.

Listening with surround sound

The surround feature enables you to enjoy the sound effects of a concert hall or movie theater.

SURROUND

FAVORITE

SOUND

MODE

PIC MODE

ENTER

A/B

SURROUND

SURROUND: LOW

SURROUND: HIGH

SURROUND: OFF

SURROUND

Adjusting Your Setup (MENU)

Introducing the menu system

The MENU button lets you open a menu and change the settings of your TV. Here’s an overview of the menu system.

Return icon

A/V CONTROL icon

SET UP icon

CH PRESET icon

Name of the current menu

Menu level 3

Menu level 2

Adjusting Your Setup (MENU)

Menu level 1

Level 1 Level 2 Level 3/Function

A/V CONTROL PICTURE MODE Select the picture mode.

DYNAMIC n STANDARD n SOFT n PERSONAL n ADJUST

ADJUST Adjust the PERSONAL option.

PICTUREnCOLORnBRIGHTnHUEnSHARP

SOUND MODE Select the sound mode.

DYNAMIC n DRAMA n SOFT n PERSONAL n ADJUST

ADJUST Adjust the PERSONAL option.

BASS n TREBLE n BALANCE n BBE *

SURROUND Select the surround mode.

HIGH n LOW n OFF

SET UP LANGUAGE/

Change the menu language. ENGLISH -

(Arabic) CHILD LOCK Lock the channel independently. PIC ROTATION Adjust the picture position. FAVORITE CH

Program favorite channels.

INTELLIGENT VOL Adjust volume automatically.

CH PRESET AUTO PROGRAM Preset channels automatically.

MANUAL PROGRAM Preset channels manually. SKIP Skip unwanted or unused program positions. TV SYS Select the TV system.

B/G n I n D/K n M

COL SYS Select the color system.

AUTOnPALnSECAMnNTSC3.58nNTSC4.43

* The BBE is manufactured by Sony Corporation under license from BBE

Sound, Inc. It is covered by U.S. Patent No. 4,638,258 and No. 4,482,866. The word “BBE” and the BBE symbol are the trademarks of BBE Sound, Inc.

– 13 –

KV-XF25M50/XF25M80

RM-954

Adjusting Your Setup (MENU)

How to use the menu

You can use the buttons on the remote and on the TV as well to display the menu and adjust the settings.

Press MENU to display the menu.

Press + or – to select the desired item.

Press ENTER to confirm your option and go to the next menu level.

Other menu operations

To Press

Adjust the setting value +/– Return to the previous menu level* ENTER Cancel the menu MENU

* To return from Menu Level 2 to Level 1, press + or – to select the return

icon (

), then press ENTER.

Tips

• If more than 60 seconds elapse between entries, the menu screen disappears.

• You can also use the buttons on the TV for menu operations. ¸ +/– work as + /– on the remote and … works as ENTER on the remote.

+/–/ENTER

Front of TV

FAVORITE

SOUND

MODE

PIC MODE

ENTER

A/B

SURROUND

ENTER

PROGR

ONE-PUSH AUTOMATIC PROGRAMMING

Adjusting Your Setup (MENU)

Changing the A/V CONTROL setting

The A/V CONTROL menu allows you to change the picture and sound settings.

Press MENU.

Make sure the A/V CONTROL icon (

) is selected, then press ENTER.

Press + or – to select either PICTURE MODE, SOUND MODE or SURROUND, then press ENTER.

Press + or – to select the desired option, then press ENTER.

For Select

PICTURE MODE either DYNAMIC, STANDARD, SOFT, PERSONAL*, or ADJUST. SOUND MODE either DYNAMIC, DRAMA, SOFT, PERSONAL*, or ADJUST.

SURROUND either HIGH, LOW, or OFF.

* When the PERSONAL mode is selected, the last adjusted picture

and sound settings from the ADJUST option are received (see next page).

Tip

• For details on the options under “PICTURE MODE”, “SOUND MODE” and “SURROUND”, see page 11 and 13 respectively.

To return to the normal screen

Press MENU.

+/–/ENTER

FAVORITE

SOUND

MODE

PIC MODE

ENTER

A/B

SURROUND

ENTER

– 14 –

KV-XF25M50/XF25M80

RM-954

Adjusting Your Setup (MENU)

Adjusting the ADJUST options under PICTURE MODE

Press + or – to select the desired item (e.g., COLOR), then press ENTER.

Adjust the value according to the following table, then press ENTER.

For Press – to Press + to

PICTURE decrease picture contrast increase picture contrast COLOR decrease color intensity increase color intensity BRIGHT darken the picture brighten the picture HUE* increase red picture tones increase green picture tones SHARP soften the picture sharpen the picture

* You can adjust HUE for the NTSC color system only.

Repeat the above steps to adjust other items.

The adjusted settings will be received when you select PERSONAL.

Adjusting the ADJUST options under SOUND MODE

Press + or – to select the desired item (e.g., BALANCE), then press ENTER.

Adjust the value according to the following table, then press ENTER.

For Press – to Press + to

BASS decrease the bass increase the bass TREBLE decrease the treble increase the treble BALANCE increase the left speaker’s volume

increase the right speaker’s volume

BBE select “HIGH” for higher enhancement of sound clarity;

select “LOW” for lower enhancement of sound clarity; select “OFF” to turn off the BBE sound

Repeat the above steps to adjust other items.

The adjusted settings will be received when you select PERSONAL.

Tip

• For details on the menu system and how to use the menu, refer to “Introducing the menu system” on page 14 and “How to use the menu” on page 15.

ENTER

COLOR 80

BALANCE 00

ENTER

Adjusting Your Setup (MENU)

Changing the SET UP setting

The SET UP menu allows you to change the menu language, lock channels, adjust the picture position, program your favorite channels and adjust volume automatically.

Programming your favorite channels

The FAVORITE CH feature enables you to program up to six channels for direct selection.

Press MENU.

Press + or – to select the SET UP icon ( ), then

press ENTER.

Press + or – to select FAVORITE CH, then press ENTER twice.

Press + or –, or number buttons to program the desired channel (e.g., PR03), then press ENTER.

To continue programming other favorite channels, press + or – and then press ENTER. After that, repeat step 4.

To return to the normal screen

Press MENU.

Number buttons

+/–/ENTER

1 4 7

-/--

2 5 8 0

3 6 9

FAVORITE

SOUND

MODE

PIC MODE

ENTER

A/B

SURROUND

ENTER

+++++++

PRO

R02

B/G

COL SYS:AUTO

AUTO PROGRAM M S T

ENTER

8 0

-/--

+++++++

PRO

R02

B/G

COL SYS:AUTO

AUTO PROGRAM S

– 15 –

KV-XF25M50/XF25M80

RM-954

Adjusting Your Setup (MENU)

Press MENU.

Press + or – to select the SET UP icon (

), then

press ENTER.

Press + or – to select CHILD LOCK, then press ENTER.

Press + or –, or number buttons to select the desired channel, then press ENTER.

Press + or – to select ON, then press ENTER.

The lock symbol (

)

appears on the screen.

To unlock the channel, select OFF.

To continue locking other channels, press ENTER and then repeat step 4 to 5.

To return to the normal screen

Press MENU.

Note

• If you preset a locked channel, that particular channel will be unlocked automatically (see page 21).

Using the CHILD LOCK feature

You can prevent your children from watching certain channels by using the CHILD LOCK feature.

ENTER

8 0

-/--

ENTER

continued

Adjusting Your Setup (MENU)

Changing other SET UP menu options

Press MENU.

Press + or – to select the SET UP icon (

), then

press ENTER.

Press + or – to select the desired option (e.g., INTELLIGENT VOL), then press ENTER.

Select To

LANGUAGE Change the menu language (see “Changing the menu

language” on page 9).

CHILD LOCK Prevent children from watching certain channels (see

“Using the CHILD LOCK feature” on page 19).

PIC ROTATION Adjust the picture position when it is not aligned to the

TV screen. Press + or – to adjust the picture position, then press ENTER.

FAVORITE CH Program channels for direct selection (see “Programming

your favorite channels” on page 18).

INTELLIGENT VOL Adjust the volume of all TV programs automatically.

Press + or – to select “ON”, then press ENTER. To turn off the “INTELLIGENT VOL” function, select “OFF”, then press ENTER.

To return to the normal screen

Press MENU.

Tip

• For details on the menu system and how to use the menu, refer to

“Introducing the menu system” on page 14 and “How to use the menu” on page 15.

ENTER

PIC ROTATION

Changing the SET UP setting (continued)

– 16 –

KV-XF25M50/XF25M80

RM-954

Adjusting Your Setup (MENU)

Changing the Channel Preset (CH PRESET) setting

The CH PRESET menu allows you to adjust the setup of your TV. For example, you can receive a channel with a weak signal that fails to be tuned in by automatic presetting.

Presetting channels manually

Press MENU.

Press + or – to select the CH PRESET icon (

), then

press ENTER.

Press + or – to select MANUAL PROGRAM, then press ENTER.

Select the program number to which you want to preset a channel.

(1) Make sure “PR” is

selected , then press ENTER.

(2) Press + or – until the

program number you want to preset (e.g., program number 10) appears on the menu, then press ENTER.

+/–/ENTER

FAVORITE

SOUND

MODE

PIC MODE

ENTER

A/B

SURROUND

ENTER

++++

ENTER

+ +

ENTER

+ +

continued

Adjusting Your Setup (MENU)

Changing the Channel Preset (CH PRESET) setting (continued)

Select the desired channel.

(1) Press + or – to select

either VHF LOW, VHF HIGH or UHF, then press ENTER.

(2) Press + or – until the

desired channel picture appears on the TV screen, then press ENTER.

If the sound of the desired channel is abnormal, select the appropriate TV system.

(1) Press + or – to select

TV SYS, then press ENTER.

(2) Press + or – until the

sound becomes normal (e.g., M), then press ENTER.

ENTER

+ +

ENTER

+ +

– 17 –

KV-XF25M50/XF25M80

RM-954

Adjusting Your Setup (MENU)

If you are not satisfied with the picture and sound quality, you may improve them by using fine tuning.

(1) Press + or – to select

FINE, then press ENTER.

(2) Press + or – to select

MANUAL, then press ENTER.

(3) Press + or – until the

picture and sound quality are optimal, then press ENTER.

The + or – icon on the menu flashes while tuning.

To return to the normal screen

Press MENU.

Note

• The TV system (TV SYS) and the fine tuning (FINE) settings are memorized for each program number.

ENTER

+ +++ +

continued

Adjusting Your Setup (MENU)

Changing other CH PRESET menu options

Press MENU.

Press + or – to select the CH PRESET icon (

), then

press ENTER.

Press + or – to select the desired option (e.g., SKIP), then press ENTER.

Select

AUTO PROGRAM MANUAL PROGRAM

TV SYS

COL SYS SKIP

Tip

• For details on the menu system and how to use the menu, refer to

“Introducing the menu system” on page 14 and “How to use the menu” on page 15.

Note

• If you preset a locked channel, that particular channel will be unlocked

automatically (see page 19).

preset channels automatically. preset channels manually. See “Presetting channels

manually” on page 21 and 22. select the TV system. See “Presetting channels manually”

on page 21 and 22. select the color system. Normally, set this to “AUTO”. skip unwanted or unused program numbers.

1 Press + or – until the unused or unwanted program

number appears, then press ENTER.

2 Press + or – to select “ON”, then press ENTER.

To put the skipped program number back on, select “OFF”, then press ENTER.

ENTER

Changing the Channel Preset (CH PRESET) setting (continued)

KV-XF25M50/XF25M80

RM-954

– 18 –

Additional Information

Self-diagnosis function

Your TV is equipped with a self-diagnosis function. If there is a problem with your TV, the

indicator flashes red. The number of

times the

indicator flashes indicates the possible causes.

Check that the u indicator flashes red a number of times between 3-second intervals.

Count the number of times the

indicator flashes.

Press U (main power) to turn off your TV.

Inform your nearest Sony service center about the number of times the

indicator flashes. Be sure to note the model name and serial number located on the rear of your TV.

Front of TV

u indicator

Additional Information

Troubleshooting

If you find any problem while viewing your TV, please check the following guide. If any problem persists, contact your Sony dealer .

Possible causeSymptom

Solutions

• Check the antenna cable and connection on the TV, VCR and on the wall. (page 4)

• Display the CH PRESET menu and select “MANUAL PROGRAM” to preset the channel again. (page 21)

• Check the antenna type (VHF/UHF). Contact a Sony dealer for advice.

• Adjust the antenna direction. Contact a Sony dealer for advice.

• Try using a booster.

• Turn off or disconnect the booster if it is in use.

• If the sound of some channels are noisy, select the channel, then display the CH PRESET menu and select the appropriate TV system (TV SYS). (page 22)

• Check the power cord, antenna and the VCR connections.

• Press u (power).

• Press U (main power) on the TV to turn off the TV for about five seconds, then turn it on again.

• Connection is loose or the cable is damaged.

• Channel presetting is inappropriate or incomplete.

• The antenna type is inappropriate.

• The antenna direction is inappropriate.

• Signal transmission is low.

• Broadcast signals are too strong.

• The TV system (TV SYS) setting is inappropriate.

• The power cord, antenna or VCR is not connected.

• The TV is not turned on.

Snowy picture

Noisy sound

Distorted picture

Noisy sound

Good picture

Noisy sound

No picture

No sound

– 19 –

KV-XF25M50/XF25M80

RM-954

Additional Information

• Press ¸ + to increase the volume level.

• Press ¤ to cancel the muting.

• Do not use a hair dryer or other equipment near the TV.

• Adjust the antenna direction for minimum interference. Contact a Sony dealer for advice.

• Use a highly directional antenna.

• Adjust the antenna direction. Contact a Sony dealer for advice.

• Turn off or disconnect the booster if it is in use.

• Display the A/V CONTROL menu and select “ADJUST” of PICTURE MODE, then adjust the COLOR level. (pages 16 and 17)

• Display the CH PRESET menu and check the color system (COL SYS) setting (usually set this to AUTO). (page 24)

• Adjust the antenna direction. Contact a Sony dealer for advice.

• Keep external speakers or other electrical equipment away from the TV. Do not move the TV while the TV is turned on. Press U (main power) on the TV to turn off the TV for about five minutes, then turn it on again.

Good picture

No sound

Dotted lines or stripes

Double images or “ghosts”

No color

Abnormal color patches

• The volume level is too low.

• The sound is muted.

• There is local interference from cars, neon signs, hair dryers, power generators, etc.

• Broadcast signals are reflected by nearby mountains or buildings.

• The antenna direction is inappropriate.

• Use of a booster is inappropriate.

• The color level setting is too low.

• The color system setting is inappropriate.

• The antenna direction is inappropriate.

• The magnetic disturbance from external speakers or other equipment, or the direction of the earth’s magnetic field may affect the TV.

Possible causeSymptom

Solutions

continued

Additional Information

• Display the SET UP menu and adjust “PIC ROTATION” so that the picture is aligned to the TV screen. (page 20)

• Contact your nearest Sony service center. (page 25)

—

Picture slant

The u indicator on your TV flashes red a number of times between 3-second intervals.

TV cabinet creaks.

A “boom” sound is heard when the TV is turned on.

Possible causeSymptom

Solutions

• The terrestrial magnetism affects your TV set.

• Your TV may need service.

• Changes in room temperature sometimes make the TV cabinet expand or contract, making a noise. This does not indicate a malfunction.

• The TV’s demagnetizing function is working. This does not indicate a malfunction.

Troubleshooting (continued)

KV-XF25M50/XF25M80

RM-954

– 20 –

Additional Information

Identifying parts and controls

Refer to the pages indicated in parentheses ( ) for details.

Front panel

(main power) button (8)

2 PROGR +/– (program) buttons (8) 3¸ +/– (volume) buttons (8) 4

…

(TV/video) button (9)

5 AUTO PROGR (program) button (5) 6 MENU button (15) 72 (headphone) jack

ONE-PUSH AUTOMATIC PROGRAMMING

PROGR

continued

Additional Information

Button function

For general TV operations For Teletext operations

Remote Control

Names/symbols of buttons on the remote are indicated in different colors to represent the available functions.

Label color

White Green

!£ SOUND MODE button (11) !¢ SURROUND button (13) !∞ FAVORITE button (12) !§ PIC MODE button (11) !¶ Teletext operation buttons

(not used for

KV-XF29M80/XF29M50/

XF25M80/XF25M50

)

(text)

(enlarge)

(reveal)

(hold)

(index)

(text clear)

(FASTEXT: red, green, yellow, blue)

1 ¤ (muting) button (9) 2

(display) button (9)

3 u (power) button (8) 4 … (video) button (9) 5 ; (TV) button (9) 6 Number buttons (8) 7 JUMP button (9) 8

Menu operation buttons (15)

MENU button + or – buttons ENTER button

9 PROGR +/– button (8) !º A/B button

(not used for KV-XF29M80/ XF29M50/XF25M80/XF25M50)

!¡ Timer setting buttons (10)

(wake up timer) (sleep timer)

!™ . +/– (volume) buttons (8)

1 4 7

-/--

2 5 8 0

3 6 9

FAVORITE

SOUND MODE

PIC MODE

ENTER

A/B

SURROUND

!¡

!º

!™

1 4 7

-/--

2 5 8 0

3 6 9

FAVORITE

SOUND MODE

PIC MODE

ENTER

A/B

SURROUND

!¶

!∞ !§

!£ !¢

Identifying parts and controls (continued)

– 21 –

KV-XF25M50/XF25M80

RM-954

+ 49 hidden pages

SONY KV-XF25M50, KV-XF25M80 Service Manual

SPECIFICATIONS

TABLE OF CONTENTS

SELF DIAGNOSTIC FUNCTION

GENERAL