Sony KV-28WF1A, KV-28WF1B, KV-28WF1D, KV-28WF1E, KV-28WF1K Service Manual

— 1 —

KV-28WF1

DEST.COMMANDER CHASSIS NO.

MODEL

MODEL

CHASSIS NO.

COMMANDER

DEST.

RM-839

French

SCC-K01S-A

KV-28WF1K
KV-28WF1R
KV-28WF1U

SERVICE MANUAL

KV-28WF1A
KV-28WF1B
KV-28WF1D
KV-28WF1E

RM-839

Italian

SCC-K05Q-A

RM-839

AEP

SCC-K07T-A

RM-839

OIRT

SCC-K20H-A

RM-839

OIRT

SCC-K20G-A

BE-3D

CHASSIS

MICROFILM

R

TRINITRON COLOR TV

R

RM-839

Spanish

SCC-K06S-A

RM-839

UK

SCC-K04N-A

KV-28WF1

— 2 —

1 21-pin Euro connector (CENELEC standard)

- Inputs for audio / video signals

- Inputs for RGB

- Outputs for TV audio and video signals

2/ 2, 21-pin Euro connector (CENELEC standard)

- Inputs for audio / video signals

- Inputs for S video

- Outputs for TV audio and video signals (selectable)
Audio outputs - phono jacks

Picture Tube Super Trinitron

Approx. 71 cm (28 inches)
(Approx. 66 cm picture measured
diagonally)
110° -deflection

Rear/Front Terminals
[REAR]

SPECIFICATIONS

[FRONT]

3 , Video input - phono jack
3 , Audio inputs - phono jacks
3 , S video input - 4 pin DIN
Stereo minijack - headphone jack

Sound output
Left/Right 2x10W (RMS)

2x20W (music power)
Dimensions 690x535x534 mm approx.
Weight Approx. 38.1 kg

Supplied accessories

RM-839 Remote Commander (1)
Batteries R6 (2)

Other features NICAM (KV-28WF1B/28WF1E/28WF1U only)

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96E-12E:FHU21E-2E:FHVH/G/BLAP

14S-1S:)1(VTELBAC

01U-1U,01M-1M,50S-10S:)2(VTELBAC

2H,1H,H-A:FHVAILATI

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2H,1H,H-A:FHVAILATI

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MACES,LAP

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01U-1U,01M-1M,50S-10S:)2(VTELBAC

2H,1H,H-A:FHVAILATI

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— 3 —

KV-28WF1

[RM-839]

Remote control system Infrared control
Power requirements 3V dc (2 batteries) R6 (size AA)
Dimensions Approx. 210x45x24 mm (w/h/d)
Weight Approx. 90g (Not including battery)

Design and specifications are subject to change without notice.

The flexible mains lead is supplied connected to a B.S. 1363 fused
plug having a fuse of 5 AMP capacity. Should the fuse need to be
replaced, use a 5 AMP FUSE approved by ASTA to BS 1362, ie
one that carries the mark.
IF THE PLUG SUPPLIED WITH THIS APPLIANCE IS NOT
SUITABLE FOR YOUR SOCKET OUTLETS IN YOUR HOME.
IT SHOULD BE CUT OFF AND AN APPROPRIATE PLUG FITTED.
THE PLUG SEVERED FROM THE MAINS LEAD MUST BE
DESTROYED AS A PLUG WITH BARED WIRES IS
DANGEROUS IF ENGAGED IN A LIVE SOCKET OUTLET.
When an alternative type of plug is used it should be fitted with a 5 AMP
FUSE, otherwise the circuit should be protected by a 5 AMP FUSE at the
distribution board.

FUSE

How to replace the fuse.
Open the fuse compartment with the
screwdriver blade
and replace the fuse.

ASA

T

WARNING ( KV-28WF1U only )

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KV-28WF1

— 4 —

21 pin connector ( 1, 2 / 2 )

19
17
15
13
11

9
7
5
3
1

20
18
16
14
12
10

8

6
4
2

21

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Not Connected (Open) * at 20Hz - 20kHz

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— 5 —

KV-28WF1

TABLE OF CONTENTS

Section Title PageSection Title Page

1. GENERAL

Overview ...........................................................................

Getting Started...................................................................

TV Operation.....................................................................

Advanced Operations ........................................................

Teletext ..............................................................................

Optional Equipment ..........................................................

For Your Information ........................................................

2. DISASSEMBLY

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

2-2. Chassis Assy Removal ...............................................

2-3-1 Service Position ..........................................................

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

2-4. Wire Dressing.............................................................

2-5. A Board Removal .......................................................

2-6. A Extension Board .....................................................

2-7. Picture Tube Removal ................................................

Removal of Anode Cap ..............................................

Removal and Replacement of The Main-Bracket

Bottom Plates .............................................................

3. SET-UP ADJUSTMENTS

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

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

3-3. White Balance ............................................................

4. CIRCUIT ADJUSTMENTS

4-1. Electrical Adjustments................................................

4-2. Test Mode 2 :..............................................................

4-3. BE-3D Self Diagnostic Software................................

5. DIAGRAMS

5-1. Block Diagrams ..........................................................

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

5-3. Schematic Diagrams and Printed Wiring Boards.......

* D Board ...................................................................

* D3 Board .................................................................

* A Board ...................................................................

* C Board....................................................................

* VM Board ................................................................

* D2 Board .................................................................

* IF Board [VIF (AEP), VIF (UK)]...........................

* IF Board [VIF (FR)] ...............................................

IC Blocks ....................................................................

5-4. Semiconductors ..........................................................

6. EXPLODED VIEWS

6-1. Chassis........................................................................

6-2. Picture Tube ...............................................................

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

!

!

ATTENTION
APRES AVOIR DECONNECTE LE CAP DE L'ANODE, COURT­CIRCUITER L'ANODE DU TUBE CATHODIQUE ET CELUI DE
L'ANODE DU CAP AU CHASSIS METALLIQUE DE L'APPAREIL,
OU AU COUCHE DE CARBONE PEINTE SUR LE TUBE CATHODIQUE
OU AU BLINDAGE DU TUBE CATHODIQUE.

ATTENTION !!
AFIN D'EVITER TOUT RISQUE D'ELECTROCUTION PROVENANT
D'UN CHÁSSIS SOUS TENSION, UN TRANSFORMATEUR
D'ISOLEMENT DOIT ETRE UTILISÉ LORS DE TOUT DÉPANNAGE.
LE CHÁSSIS DE CE RÉCEPTEUR EST DIRECTEMENT RACCORDÉ
À L'ALIMENTATION SECTEUR.

ATTENTION AUX COMPOSANTS RELATIFS À LA

SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÈS PAR UNE TRAME ET PAR UNE
MARQUE SUR LES VUES EXPLOSÉES ET LES LISTES DE
PIECES SONT D'UNE IMPORTANCE CRITIQUE PUR LA SÉCURITÉ
DU FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES
COMPOSANTS SONY DONT LE NUMÉRO DE PIÉCE EST INDIQUÉ
DANS LE PRÉSENT MANUEL OU DANS DES SUPPLÉMENTS
PUBLIÉS PAR 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 REMOVING THE ANODE.

WARNING !!
AN ISOLATION TRANSFORMER SHOULD BE USED DURING ANY
SERVICE TO AVOID POSSIBLE SHOCK HAZARD, BECAUSE OF
LIVE CHASSIS.
THE CHASSIS OF THIS RECEIVER IS DIRECTLY CONNECTED TO
THE AC POWER LINE.

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.

7
8

9
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19

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21
21
22
22

23

24
25
26

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33

35
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62
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73