Sony KE-42TS2E Manual de usuario

SERVICE MANUAL

SPECIFICATIONS

KE-42TS2E

FLAT PANEL COLOR TELEVISION

AEP Model

UK Model

TV system:

Depending on your country selection: B/G/H,

D/K, L, I

Colour system:

PAL, SECAM

NTSC 3.58, 4.43 (only Video In)

Channel Coverage:

VHF: E2-E12

UHF: E21-E69

CATV: S1-S20

HYPER: S21-S41

D/K: R1-R12, R21-R69

L: F2-F10, B-Q, F21-F69

I: UHF B21-B69

Screen size (measured diagonally):

42 inches

approx. 107 cm. measured diagonally

Panel System:

Plasma Display panel

Display resolution:

1024 dots (horizontal) x 1024 lines (vertical)

Rear Terminals:

21-pin Scart connector (CENELEC

standard) including audio/video input,

RGB input, TV audio/video output.

21-pin Scart connector (CENELEC

standard) including audio/video input,

RGB input, TV audio/video output.

(SMARTLINK)

21-pin Scart connector (CENELEC

standard) including audio/video input, S

video input, selectable audio/video output

and Smartlink interface.

audio outputs (Left/Right) - phono jacks

S video input (4-pin mini DIN):

Y: 1 Vp-p, 75-ohms unbalanced, sync

negative

C: 0.286 Vp-p (Burst signal), 75 ohms

video input (phono jack):

1 Vp-p, 75-ohms unbalanced, sync negative

audio input (phono jacks):

500 m Vrms (100% modulation),

Impedance: 47 kilo ohms

Y: 1 Vp-p, 75 ohms, 0.3V negative sync

: 0.7 Vp-p, 75 ohms

G: 0.7 Vp-p, 75 ohms, Sync on Green

B: 0.7 Vp-p, 75 ohms, Sync on Green

R: 0.7 Vp-p, 75 ohms, Sync on Green

G: 0.7 Vp-p, 75 ohms, non Sync on Green

B: 0.7 Vp-p, 75 ohms, non Sync on Green

R: 0.7 Vp-p, 75 ohms, non Sync on Green

HD:1-5 Vp-p

VD: 1-5 Vp-p

audio input (phono jacks)

500 m Vrms (100% modulation),

Impedance: 47 kilo ohms

SUB WOOFER:

phono jac

CTRL S:

minijacks

Power Consumption:

360 W

Standby Power Consumption:

2.5 W

Dimensions (w x h x d) :

Approx.

1,056

764

124

mm.

Weight:

37.0 Kg.

Accessories supplied:

One Remote Control (RM-932)

Two batteries (R6 type)

Two Brackets

One coaxial cable

One AC Cable (Type C)

One AC Cable (Type BF)

This cable may not be supplied depending on

the country.

One Cleaning cloth

Other features:

¥ Teletext, Fastext, TOPtext

¥ Sleep Timer

¥ Smartlink (direct link between your TV set

and a compatible VCR. For more

information on Smartlink, please refer to

the Instruction Manual of your VCR).

¥ TV system Autodetection

¥ Auto Format

Design and specifications are subject to

change without notice.

Ecological Paper- Totally Chlorine Free

Front Terminals:

headphones jack

Sound Output:

2x9W(RMS)

KE-42TS2E(AEP/UK) 2

LEAKAGE TEST

The AC leakage from any exposed metal part to earth ground and from all

exposed metal parts to any exposed metal part having a return to chassis,

must not exceed 0.5 mA (500 microamperes).

Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA WT-

540A. Follow the manufacturers’ instructions to use these instruments.

2. A battery-operated AC milliammeter. The Data Precision 245 digital

multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a VOM or

battery-operated AC voltmeter. The “limit” indication is 0.75 V, so

analog meters must have an accurate low-voltage scale. The Simpson 250

and Sanwa SH-63Trd are examples of a passive VOMs that are suitable.

Nearly all battery operated digital multimeters that have a 2 V AC range

are suitable. (See Fig. A)

After correcting the original service problem, perform the following safety

checks before releasing the set to the customer:

1. Check the area of your repair for unsoldered or poorly-soldered

connections. Check the entire board surface for solder splashes and

bridges.

2. Check the interboard wiring to ensure that no wires are “pinched” or

contact high-wattage resistors.

3. Check that all control knobs, shields, covers, ground straps, and

mounting hardware have been replaced. Be absolutely certain that you

have replaced all the insulators.

4. Look for unauthorized replacement parts, particularly transistors, that

were installed during a previous repair. Point them out to the customer

and recommend their replacement.

5. Look for parts which, though functioning, show obvious signs of

deterioration. Point them out to the customer and recommend their

replacement.

6. Check the line cords for cracks and abrasion. Recommend the

replacement of any such line cord to the customer.

7. Check the B+ and HV to see if they are specified values. Make sure your

instruments are accurate; be suspicious of your HV meter if sets always

have low HV.

8. Check the antenna terminals, metal trim, “metallized” knobs, screws, and

all other exposed metal parts for AC Leakage. Check leakage as

described right.

Fig. A. Using an AC voltmeter to check AC leakage.

1.5 k

Ω

0.15 µFAC

Voltmeter

(0.75 V)

To Exposed Metal

Parts on Set

Earth Ground

SAFETY CHECK-OUT

KE-42TS2E(AEP/UK) 3

AVERTISSEMENT!!

ATTENTION AUX COMPOSANTS RELATIFS À LA SÉCURITÉ!!

LES COMPOSANTS IDENTIFIÉS PAR UNE TRAME ET UNE

MARQUE !SONT CRITIQUES POUR LA SÉCURITÉ. NE LES

REMPLACER QUE PAR UNE PIÈCE PORTANT LE NUMÉRO

SPECIFIÉ.LESRÉGLAGESDECIRCUIT DONTL’IMPORTANCE EST

CRITIQUE POUR LA SÉCURITÉ DU FONCTIONNEMENT SONT

IDENTIFIÉS DANS LE PRÉSENT MANUEL. SUIVRE CES

PROCÉDURES LORS DE CHAQUE REMPLACEMENT DE

COMPOSANTS CRITIQUES, OU LORSQU’UN MAUVAIS

FONCTIONNEMENT EST SUSPECTÉ.

WARNING!!

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY SHADING AND MARK !ON THE

SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE

PARTS LIST ARE CRITICAL FOR SAFE OPERATION. REPLACE

THESE COMPONENTS WITH SONY PARTS WHOSE PART

NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN

SUPPLEMENTS PUBLISHED BY SONY. CIRCUIT ADJUST-

MENTS THAT ARE CRITICAL FOR SAFE OPERATION ARE

IDENTIFIED IN THIS MANUAL. FOLLOW THESE PROCEDURES

WHENEVER CRITICAL COMPONENTS ARE REPLACED OR IM-

PROPER OPERATION IS SUSPECTED.

KE-42TS2E(AEP/UK) 4

1. DISASSEMBLY

1-1. Rear Cover Removal .............................................. 1-1

1-2. Q, Q2 and TU Board Removal .............................. 1-2

1-3. Main Shield Removal ............................................ 1-3

1-4. B Board Removal ................................................... 1-4

1-5. H1 Board Removal ................................................. 1-5

1-6. Switching Regulator Removal ................................ 1-6

1-7. H2 Board Removal ................................................. 1-7

1-8. Plasma Display Panel Removal .............................. 1-8

2. ADJUSTMENTS

2-1. Adjustment of A/D Converter and Video Coder..... 2-1

2-2. White Balance Adjustment ..................................... 2-3

2-3. Adjustment of Sub-color and Sub-hue.................... 2-4

3. DIAGRAMS

3-1. Block Diagrams ...................................................... 3-1

3-2. Circuit Boards Location.......................................... 3-5

TABLE OF CONTENTS

Section Title Page Section Title Page

3-3. Schematic Diagrams and Printed Wiring

Boards ..................................................................... 3-6

(1) Schematic Diagrams of B (a, b, c,d, e, f, g)

Board ...................................................................... 3-7

(2) Schematic Diagram of H1 Board ........................... 3-15

(3) Schematic Diagram of H2 Board ........................... 3-17

(4) Schematic Diagram of Q2 Board ........................... 3-19

(5) Schematic Diagrams of Q (a, b, c) Board ..... 3-20

(6) Schematic Diagram of TU Board ........................... 3-24

3-4. Semiconductors ...................................................... 3-26

4. EXPLODED VIEWS ................................................ 4-1

4-1. Cover ...................................................................... 4-2

4-2. Chassis ................................................................... 4-3

4-3. Packing Materials ................................................... 4-4

5. ELECTRICAL PARTS LIST ................................. 5-1

KE-42TS2E(AEP/UK) 1-1

3Rear Cover

1Eight screws

(+PSW 5x12)

2Ten screws

(+PSW 5x12)

SECTION 1

DISASSEMBLY

1-1. REAR COVER REMOVAL

KE-42TS2E(AEP/UK) 1-2

1-2. Q, Q2 ANDTU BOARD REMOVAL

4Q board bracket

5Q top shield

6Q board

7TU board

1Three screws

(+PSW 4x12)

1Two screws

(+PSW 4x12)

8Q2 board

9Tape,shield(55x125)

0Tape,shield

2Five screws

(+BVTP 3x12)

3Screw

(+BVTP 4x14)

2Two screws

(+PSW 4x12)

KE-42TS2E(AEP/UK) 1-3

7Main shield

6Twenty-one screws

(+BVTP 4x16)

1Screw

(+BVTP 4x16)

3Tuner shield(R)

2Tuner shield(L)

5Twenty-one screws

(+BVTP 4x16) 4Two screws

(+PSW 4x12)

1-3. MAIN SHIELD REMOVAL

KE-42TS2E(AEP/UK) 1-4

5B board

4B top shield

6B bottom shield

3Two screws

(+PSW 4x12)

2Two shield tape

1Six screws

(+PSW 3x8)

5Gasket (10x7)

3Gasket (13x13)

1-4. B BOARD REMOVAL

KE-42TS2E(AEP/UK) 1-5

1-5. H1 BOARD REMOVAL

2H1 board

1Two screws

(+BVTP 3x10)

KE-42TS2E(AEP/UK) 1-6

2SWITCHING

REGULATOR

1Nine screws

(+PSW 3x6)

1-6. SWITCHING REGULATOR REMOVAL

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