Sony TRINITRON KV-J14M1J Manual de usuario

MODEL COMMANDER DEST. CHASSIS NO.

KV-J14M1J

RM-869 ME SCC-U07P-A

MODEL COMMANDER DEST. CHASSIS NO.

CHASSIS

BG-2S

SERVICE MANUAL

TRINITRON

COLOR TV

– 2 –

KV-J14M1J Note

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

IUHF: 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/

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

MVHF: A2 to A13/ UHF: A14 toA79/

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

Audio output (speaker) 3W+3W

Inputs ˘(antenna): 75 ohms external terminal

…(video input) jacks: phono jacks

D(video): 1 Vp-p, 75 ohms

≥(audio): 500 mVrms, high impedance

Outputs A(earphone) jack: mini jack

Ú(monitor output) jacks: phono jacks

D(video): 1 Vp-p, 75 ohms

≥(audio): 500 mVrms

Picture tube 14 in.

Tube size (cm) 37 Measured diagonally

Screen size (cm) 34 Measured diagonally

Dimensions (w/h/d, mm) 456 ×343 ×416

Mass (kg) 12

Design and specifications are subject to change without notice.

SPECIFICATIONS

SAFETY-RELATED COMPONENTWARNING!!

COMPONENTS IDENTIFIED BY SHADING AND MARK ¡¡

¡¡

ON THE SCHEMATIC 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 SUPPLIMENTS

PUBLISHED BY SONY.

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

REMOVINGTHE ANODE.

– 3 –

TABLE OF CONTENTS

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

2. DISASSEMBLY

2-1. Rear Cover Removal .............................................. 8

2-2. A Board Removal ................................................... 8

2-3. Service Position ...................................................... 8

2-4. Replacement of Parts .............................................. 8

2-5. Demagnetization Coil and Picture Tube Removal. 9

3. SET-UP ADJUSTMENTS

3-1. Beam Landing......................................................... 10

3-2. Convergence ........................................................... 11

3-3. Focus Adjustment ................................................... 13

3-4. G2 (Screen) and White Balance Adjustments........ 13

4. SELF DIAGNOSIS FUNCTION............................... 14

5. CIRCUIT ADJUSTMENTS

5-1. Adjustments with Commander ............................... 15

5-2. Adjustment Method ................................................ 16

5-3. A Board Adjustment after IC003 (Memory)

Replacement............................................................ 20

5-4. Picture Distortion Adjustment ................................ 20

Section Title Page Section Title Page

6. DIAGRAMS

6-1. Block Diagram ........................................................ 21

6-2. Circuit Boards Location ......................................... 24

6-3. Schematic Diagrams and Printed Wiring Boards .. 24

(1) Schematic Diagram of A Board.............................. 29

(2) Schematic Diagram of C Board.............................. 32

6-4. Semiconductors....................................................... 33

7. EXPLODED VIEWS

7-1. Chassis .................................................................... 35

8. ELECTRICAL PARTS LIST...................................... 36

– 4 –

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.

– 5 –

– 6 –

– 7 –

– 8 –

SECTION 2

DISASSEMBLY

2-1. REAR COVER REMOVAL 2-2. A BOARD REMOVAL

2-3. SERVICE POSITION

2-4. REPLACEMENT OF PARTS

For replacement of the Control Button, cut the welded portions from them, exchange with the new parts, and fix them with screws (+BVTP)

respectively.

2-4-1. REPLACEMENT OF CONTROL BUTTON

Remove the rear cover.

Five screws (BVTP4×16)

Lever

A board

Two screws

(BVTP 3x12)

Cut Multi button

Multi button

– 9 –

1Turn up one side of the rubber cap in

the direction indicated by the arrowa.

2Using a thumb, pull up the rubber

cap firmly in the direction indicated

by the arrow b.

1Don’t hurt the surface of anode-caps with

sharp shaped objects!

2Don’t press the rubber too hard so as not to

damage the inside of anode-caps!

A material fitting called the shatter-hook

terminal is built into the rubber.

3Don’t turn the foot of rubber over too hard!

The shatter-hook terminal will stick out or

damage the rubber.

•HOWTO HANDLEAN ANODE-CAP

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.

•REMOVAL OF ANODE-CAP

NOTE : Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield or carbon paint on the

CRT, after removing the anode.

•REMOVING PROCEDURES

2-5. DEMAGNETIZATION COIL AND PICTURE TUBE REMOVAL

aAnode button

2A board

3C board

4Deflection yoke

Cushion

5Four screws

(Tapping screws)

1Anode cap

8Picture tube

Spring

6Demagnetization

coil

– 10 –

•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

SECTION 3

SET-UP ADJUSTMENTS

Fig. 3-1

Preparations :

•In order to reduce the influence of geomagnetism on the set's

picture tube, face it east or west.

•Switch on the set's power and degauss with the degausser.

3-1. BEAM LANDING

1. Input the white raster 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 the 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.)

Perform the adjustments in order as follows :

1. Beam Landing

2. Convergence

3. Focus

4. White Balance

Note : Test Equipment Required.

1. Color-bar/Pattern Generator

2. Degausser

3. Oscilloscope

Fig. 3-2

Fig. 3-4

}normal

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

Fig. 3-3

Purity control

GREEN

BLUE RED

Deflection yoke positioning

corrects these areas.

Purity control corrects

this area. Disk magnets or rotatable

disk magnets correct

these areas (a-d).

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