Sony KV-J14P2S, KV-J51PF2S Service manual

SERVICE MANUAL

BG-2S

CHASSIS

MODEL COMMANDER DEST. CHASSIS NO.

KV-J14P2S KV-J51PF2S

RM-869 Indonesia SCC-U10D-A RM-869 Indonesia SCC-U10E-A

MODEL COMMANDER DEST. CHASSIS NO.

÷

TRINITRON

COLOR TV

KV-J14P2S/J51PF2S

RM-869

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) Channel coverage VHF: E2 to E12/UHF: E21 to E69/CATV: S01 to S03, S1 to S41 Audio output (speaker) 3W × 2 ˘ (antenna) 75 ohms external terminal Inputs

… (video input) phono jacks D (video) 1 Vp-p, 75 ohms ≥ (audio) 500 mVrms, high impedance

Outputs

(earphone) minijack KV-J14P2S

2 (headphone) minijack KV-J51PF2S Ú (monitor output) phono jacks

D (video) 1 Vp-p, 75 ohms

≥ (audio) 500 mVrms

Picture tube 14 in. KV-J14P2S

Tube size (cm) 37 Measured diagonally KV-J14P2S

Screen size (cm) 34 Measured diagonally KV-J14P2S

Dimensions (w/h/d, mm) 343 × 456 × 416 KV-J14P2S

Mass (kg) 12 KV-J14P2S

SPECIFICATIONS

Note

21 in. KV-J51PF2S

54 Measured diagonally KV-J51PF2S

51 Measured diagonally KV-J51PF2S

610 × 470 × 474 KV-J51PF2S

22 KV-J51PF2S

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 DIA GRAMS, 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 MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.

– 2 –

KV-J14P2S/J51PF2S

Section Title Page Section Title Page

RM-869

1. GENERAL.................................................................... 4

2. DISASSEMBLY

2-1. Rear Cover Removal ............................................ 9

2-2. Speaker Removal ................................................. 9

2-3. A Board Removal ................................................ 9

2-4. Service Position ................................................... 9

2-5. Replacement of Parts ........................................... 10

2-5-1. Replacement of Multi Button ......................................... 10

2-5-2. Replacement of Light Guide .......................................... 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. Adjustment by Commander ................................. 15

3-5. 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......................................................... 25

5-4. Picture Distortion Adjustment ............................. 25

6. DIAGRAMS

6-1. Block Diagram ...................................................... 27

6-2. Circuit Boards Location ....................................... 31

6-3. Schematic Diagrams and Printed Wiring Boards 31

(1) Schematic Diagram of A Board ........................... 35

(2) Schematic Diagram A of Board ........................... 39

(3) Schematic Diagrams C and VM Boards .............. 43

6-4. Semiconductors..................................................... 51

7. EXPLODED VIEW

7-1. Chassis .................................................................. 53

8. ELECTRICAL PARTS LIST.................................... 57

– 3 –

KV -J14P2S/J51PF2S

p KV-J51PF2S

SELECT

— PROGR +

SELECT

VHF LOW B/G

– 4 –

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.

SECTION 1

GENERAL

RM-869

Getting Started

-EN

p KV-J14P2S

p KV-J51PF2S

to antenna output

Rear of TV

to antenna socket

≥

Ú

…

to video and audio outputs

VCR

R L(MONO)

≥

÷Ú

…

to Ú (monitor ouput)

(video) and

≥

(audio) outputs

VCR

When recording through the

(monitor output) jack

Do not change the channel or video input while recording with a VCR; otherwise the channel or video input you are recording also will be changed.

: Signal flow

to antenna output

to antenna socket

Rear of TV

R L(MONO)

≥

Ú

…

VCR

: Signal flow

to video and audio outputs

When using the

…

(video input) jack

Do not use 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.

When connecting a monaural VCR (for KV-J51PF2S only)

Connect the yellow plug to

and the black plug to ≥ – L (MONO).

Connecting audio/video equipment using the

(monitor output) jack

p KV-J14P2S

p KV-J51PF2S

Rear of TV

to antenna socket

to video and audio inputs

: Signal flow

to antenna output

to antenna socket

≥

Ú

…

to Ú (monitor ouput)

(video) and

≥

(audio) outputs

to video and audio inputs

VCR

Rear of TV

: Signal flow

to antenna output

…

(video input)

(video) and

≥

(audio) inputs

…

(video input)

(video) and

≥

(audio) inputs

Getting Started

-EN

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.

Connecting optional equipment

You can connect optional audio/video equipment to your TV such as a VCR, multi disc player, camcorder, or video game.

Connecting video equipment using the

… (video input) jack

p KV-J14P2S

p KV-J51PF2S

Getting Started

On a wall

Rear of TV

…

(video input)

(video) and

≥

(audio) inputs

Front of TV

(

MONO

)

…

≥

D…≥

: Signal flow

…

(video input)

(video) and

≥

(audio) inputs

to video and audio outputs

Camcorder

to video and audio outputs

Front of TV

Camcorder

: Signal flow

– 5 –

KV -J14P2S/J51PF2S

RM-869

KV -J14P2S/J51PF2S

Getting Started

-EN

Presetting channels

Presetting channels automatically

Press SELECT on the remote commander or the TV until “AUTO PROGRAM” appears on the screen.

Press +/– on the remote commander or

. +/– on the TV.

Press +/– on the remote commander or

. +/– on the TV again.

To start presetting channels automatically from a specified program position

Press PROGR +/– or number buttons on the remote commander or PROGR +/– on the TV until the required program position appears on the screen after step 2 of “Presetting channels automatically”.

1 2 3 1

SELECT

— PROGR +

You can preset up to 100 TV channels in numerical sequence from program position 1 using the buttons on the remote commander or the TV.

You can preset TV channels quickly, automatically or manually.

Quick channel presetting

Press U to turn on the TV.

When the TV is turned on in standby mode, press

on the remote commander.

Press SELECT and PROGR + on the TV simultaneously for one to two seconds.

—

PROGR

SELECT

…

—

Remote commander

Front of TV

Number

PROGR +/–

SELECT

+/–

1 2 3

— . +

SELECT SELECT

AUTO PROGRAM

VHF LOW B/G

— . +

÷

PROGR

— PROGR +

Getting Started

-EN

Disabling program positions

Press PROGR +/– or number buttons on the remote commander or PROGR +/– on the TV until the unused or unwanted program position appears on the screen.

Press SELECT on the remote commander or the TV until “MANUAL PROGRAM” appears on the screen.

Press +/– on the remote commander or

. +/– on the TV.

Press PIC MODE on the remote commander.

Press SELECT on the remote commander or the TV.

To preset the disabled program position again

Preset the channel quickly, automatically or manually.

Presetting channels manually

Press SELECT on the remote commander or the TV until “MANUAL PROGRAM” appears on the screen.

Press +/– on the remote commander or

. +/– on the TV.

Press PROGR +/– or number buttons on the remote commander or PROGR +/– on the TV until the required program position appears on the screen.

Press +/– on the remote commander or

+/– on the TV until the required channel

picture appears on the screen.

Press SELECT on the remote commander or the TV.

SELECT

VHF LOW B/G

— . +

÷

PROGR

— PROGR +

SELECT

MANUAL PROGRAM

SELECT

— . +

RM-869

– 6 –

Operations

-EN

Watching the TV

Press

U to turn on the TV.

When the TV is turned on in standby mode, press

on the remote commander.

Select the TV program you want to watch.

To select a program position directly

Press the number button.

To select a two-digit program position, press “-/--” before the number buttons. For example: to select program position 25, press “-/--,” and then “2” and “5.”

To scan through program positions

Press PROGR +/– until the program position you want appears.

Press . +/– to adjust the volume.

Turning off the TV

To turn off the TV temporarily

Press

on the remote commander. The

indicator

on the TV lights up.

To turn off the TV completely

Press

on the TV.

If the power on the TV is turned off in standby mode, the

indicator on the TV may remain alight for a while.

Watching the video input

Press …

To watch TV

Press

;

Muting the sound

Press ¤.

PROGR

Operations

Üu

VIDEO

…

;

MUTING

¤

Operations

-EN

Setting the Wake Up Timer

You can set the TV automatically turned on as you program.

Press

The on-screen display appears and the

indicator

on the TV lights up.

If you want a particular TV program or video input to be displayed using the Wake Up Timer, select the TV program or video input.

Press u on the remote commander or set the Sleep Timer to turn off the TV in standby mode.

To cancel the Wake Up Timer, press

until “WAKE UP TIMER: OFF” appears, or turn off the main power of the TV.

Note

• The Wake Up Timer starts immediately after you have set it.

Displaying on-screen information

Press E G

The program position, local system, and TV settings are displayed on the screen.

• The last TV program position or video input 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. If you want to continue watching the TV, press any button or control on the TV or remote commander.

Setting the Sleep Timer

You can set the TV automatically turned off as you program.

Press

To cancel the Sleep Timer, press

I repeatedly

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

Changing the on-screen display language

You can use buttons on the remote commander or the TV to change the on-screen display language.

Press SELECT until the screen appears as follows:

Press +/– to select “

”.

Note

• You can also use SELECT and

+/– on the TV to select the

on-screen display language.

AUTO B/G

DYNAMIC

No wake up timer

After 12 hours

After 10 minutes

WAKE UP TIMER:10M

WAKE UP TIMER:OFF

WAKE UP TIMER:12H00M

Ì

©

After 30 minutes

After 60 minutes

After 90 minutes

No sleep timer

SLEEP TIMER:30M

SLEEP TIMER:60M

SLEEP TIMER:OFF

SLEEP TIMER:90M

+/– SELECT

LANGUAGE

: ENGLISH

SELECT

/LANGUAGE :

-EN

– 7 –

KV -J14P2S/J51PF2S

RM-869

Operations

-EN

Troubleshooting

Additional Information

If you have any problems, read this manual again and check the countermeasure for each of the symptoms listed below.

If the problem persists after trying the methods below, 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 high directional antenna may improve the picture.

Good picture

No sound

/ Press

¤.

Good picture

Noisy sound

/ Reduce the TREBLE level or select the

“SOFT” sound mode. (KV-J51PF2S only)

No picture

No sound

/ Press

Uor u.

/ Check the antenna connection. / Check the VCR connections. / Check the power cord connection. / Check the standby mode.

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. SOUND MODE and

Notes

• When you turn on the TV, you may hear the “boom” 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

on the TV

to turn off the TV for five minutes and then turn it on again.

• The TV illustration of KV-J14 models have been used for

illustration purpose in this manual.

• Design and specifications are subject to change without notice.

• All contents in the instruction manual are subject to change

without notice.

WARNING

Do not install the appliance in a confined space, such as a bookcase or built-in cabinet.

Additional Information

Operations

-EN

Adjusting the sound and picture settings

Press SELECT until the item you want to adjust appears.

Each time you press SELECT, the screen changes as follows:

Press +/ – to adjust the item.

To adjust other items, repeat steps 1 and 2.

Notes

• You can also use SELECT and

+/– on the TV to adjust the

sound and picture settings.

• The on-screen display for BASS, TREBLE and BALANCE are

available for KV-J51PF2S only.

If the picture color is abnormal when receiving programs through the

(antenna) terminal

Change the “COLOR SYSTEM” setting or adjust the “COLOR” level in the on-screen display until the color becomes normal.

If the picture color is abnormal when receiving programs through the

…

(video input) jack

Change the “COLOR SYSTEM” setting or adjust the “COLOR” level in the on-screen display until the color becomes normal.

Note

• Normally set “COLOR SYSTEM” to “AUTO”.

SOUND MODE

SELECT PIC MODE

+/–

Adjusting the sound and picture

SELECT

PICTURE

COLOR BRIGHT

HUE

SHARPNESS

BASS

BALANCE

TREBLE

(Operative for NTSC signal only)

—

PROGR

SELECT

…

—

Front of TV

Selecting the sound mode

p KV-J51PF2S only

Press SOUND MODE until the mode you want appears.

Each time you press SOUND MODE, the screen changes as follows:

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.

High contrast picture

Soft picture (good for video games)

DYNAMIC

STANDARDSOFT

Normal picture

SOUND

MODE

≥

MUSIC

≥

DRAMA

≥

SPORTS≥ SOFT

Emphasize low and high sound effect

Emphasize huge audience atmosphere

Emphasize vocals and background music

Emphasize soft sound

PIC MODE

(KV-J51PF2S only)

– 8 –

KV -J14P2S/J51PF2S

RM-869

SECTION 2

1 Four screws (+BVTP 4×16)

2 Two screws (+BVTP 4×16)

1 Two screws (+BVTP 4×16)

2 Speaker block assy

A board

Lever

A board

DISASSEMBLY

2-1. REAR COVER REMOVAL

– 9 –

2-2. SPEAKER REMOVAL

2-3. A BOARD REMOVAL

2-4. SERVICE POSITION

KV -J14P2S/J51PF2S

RM-869

KV -J14P2S/J51PF2S

Cut

Multi button

Cut

Two screws (BVTP 3×12)

Light guide

Cut

One screw (BVTP 3×12)

Demagnetization coil

Tension spring

Picture tube

DGC holder

2-5. REPLACEMENT OF PARTS

For replacement of the Multi 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

– 10 –

2-5-2. REPLACEMENT OF LIGHT GUIDE

2-6. DEMAGNETIZATION COIL REMOVAL

RM-869

Anode button

2-7. PICTURE TUBE REMOV AL

Cushion

4 A board

6 C board

7 Deflection yoke

8 Four screws

(Tapping screws)

3 Anode cap

2 Speaker

block assy

1 Two screws (+BVTP 4×16)

2 Speaker block assy

2 Using a thumb press down, then pull up the rubber cap firmly in the direction

indicated by the arrow b.

– 11 –

•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

1 Turn up one side of the rubber cap in the direction indicated by the arrow a.

3 When 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.

• HOW TO HANDLE AN ANODE-CAP

1 Do not damage the surface of anode-cap with sharp shaped objects. 2 Do not press the rubber too hard so as not to damage the inside of anode-cap.

A metal fitting called the shatter-hook terminal is built into the rubber.

3 Do not turn the foot of rubber over too hard.

The shatter-hook terminal will stick out or damage the rubber.

KV -J14P2S/J51PF2S

RM-869

KV -J14P2S/J51PF2S

GREEN

BLUE RED

RM-869

SECTION 3

SET-UP ADJUSTMENTS

• 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

................................................................................................................................................................................................................................

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.

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

Purity control

3-1. BEAM LANDING

1. Input a white signal with the pattern generator. Contrast Brightness

2. Set the pattern generator raster signal to green.

3. 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.)

4. Move the deflection yoke forward and adjust so that entire screen is green. (See Figure 3-1.)

5. Switch the raster signal to blue, then to red and verify the condition.

6. When the position of the deflection yoke has been decided, fasten the deflection yoke with the screws.

7. If the beam does not land correctly in all the corners, use a magnet to adjust it. (See Figure 3-4.)

}

normal

Purity control corrects this area.

Fig. 3-2

Fig. 3-3

Disk magnets or rotatable disk magnets correct these areas (a-d).

Fig. 3-1

– 12 –

Deflection yoke positioning

corrects these areas.

Fig. 3-4

KV -J14P2S/J51PF2S

RM-869

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

Center dot

R G B

V.STAT Magnet

• Operation of V.STAT magnet.

If the V.STAT magnet is moved in the direction of the a and

b arrows, the red, green and blue dots move as shown below.

B GG R

R G B

B G R

RV 701

C board

SCREEN (G2)

1. (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.

2. (Moving horizontally), adjust the H.STAT VR so that the red, green and blue dots are on top of each other at the center of the screen.

Purity

• Operation of BMC (Hexapole) magnet.

If the blue or red dot does not converge with the other tw o dots, perform following steps. Move BMC magnet (a) to correct insufficient H.static convergence. Rotate BMC magnet (b) to correct insufficient V.static convergence. In either case, repeat Beam Landing Adjustment.

BMC magnet

V.STAT

– 13 –

KV -J14P2S/J51PF2S

RM-869

(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.

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.

B G R

R G B

B G RR G B

R G B

B G R

R G BB G R

R G B

(3) Screen-corner Convergence

a-d : screen-corner misconvergence

Fix a Permalloy assy

corresponding to the misconverged areas

Permalloy assembly

– 14 –

+ 32 hidden pages

Sony KV-J14P2S, KV-J51PF2S Service manual

SPECIFICATIONS

TABLE OF CONTENTS

GENERAL

DISASSEMBLY