SONY KV-20WS1A, KV-20WS1B, KV-20WS1D, KV-20WS1E, KV-20WS1K Service Manual

KV-20WS1

SERVICE MANUAL

MODEL

RM-836

KV-20WS1A

RM-836

KV-20WS1B

RM-836

KV-20WS1D

RM-836

KV-20WS1E

DEST.COMMANDER CHASSIS NO.

Italian

French

AEP

Spanish

SCC-K31F-A

SCC-K36F-A

SCC-K32H-A

SCC-K30H-A

BE-5

MODEL

KV-20WS1K
KV-20WS1R
KV-20WS1U

COMMANDER

RM-836

RM-836

RM-836

CHASSIS

DEST.

OIRT

OIRT

UK

CHASSIS NO.

SCC-K35M-A

SCC-K35L-A

SCC-K33D-A

MICROFILM

— 1 —

MENU

PROGR

RM-836

TRINITRON COLOR TV

R

R

KV-20SW1

LEDOMMETI

nailatIH/G/B

hcnerFL,I,K/D,H/G/B

PEAK/D,H/G/B

hsinapSK/D,H/G/B

TRIOK/D,H/G/B

KUI 96B-12B:FHU

noisiveleT

metsyS

14S-12S:REPYH

96B-12B:FHUI

01-1M,01U-1U,2H-A

96R-12R,21R-1RK/D

96F-12F,Q-B,01F-2FL

96R-12R,21R-1RK/D

96R-12R,21R-1RK/D

96R-12R,21R-1RK/D

egarevoClennahCmetsySruoloC

96E-12E:FHU,21E-2E:FHV

02S-1S,50S-10S:VTELBAC

14S-1S:REPYH,96B-12B:FHU,21E-2E:FHV

02S-1S,50S-10S:VTELBAC

14S-1S:REPYH,96E-12E:FHU,21E-2E:FHV

02S-1S,50S-10S:VTELBAC

14S-1S:REPYH,96E-12E:FHU,21E-2E:FHV

02S-1S,50S-10S:VTELBAC

14S-1S:REPYH,96E-12E:FHU,21E-2E:FHV

02S-1S,50S-10S:VTELBAC

LAP

MACES,LAP

34.4,85.3CSTN

)nioedivylno(

MACES,LAP

34.4,85.3CSTN

)nioedivylno(

MACES,LAP

34.4,85.3CSTN

)nioedivylno(

MACES,LAP

34.4,85.3CSTN

)nioedivylno(

MACES,LAP

34.4,85.3CSTN

)nioedivylno(

34.4,85.3CSTN

)nioedivylno(

LEDOMA1SW02B1SW02D1SW02E1SW02K1SW02R1SW02U1SW02

noitpmusnoCrewoPW07W07W07W07W07W07W29

Picture Tube Super Trinitron Wide

Approx. 49 cm (20 inches)
(Approx. 46 cm picture measured
diagonally) 86˚ deflection

Rear/Front Terminals
[REAR]

21-pin Euro connector (CENELEC standard)

- Including audio/video input, RGB input

2 Video input - phono jack
Audio inputs - phono jacks
S Video input - 4 pin jacks
Headphone jack - stereo minijack

Sound output
Left/Right 2x8W (music power)

2x4W (RMS)

Sub-woofer 20W (music power)

10W (RMS)

SPECIFICATIONS

Dimensions 519x417x401 mm approx.
Weight Approx. 19 kg
Supplied accessories RM-836 Remote Commander (1)

IEC designated batteries (2)

Other features TELETEXT , Fastext,

NICAM (KV-20WS1B/20WS1E/
20WS1U only)

[RM-836]

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.

— 2 —

KV-20WS1

emanledoM

A1SW02-VKB1SW02-VKD1SW02-VKE1SW02-VKK1SW02-VKR1SW02-VKU1SW02-VK

metI

PIPFFOFFOFFOFFOFFOFFOFFO

PIPMFFOFFOFFOFFOFFOFFOFFO

lioCnoitatoRFFOFFOFFOFFOFFOFFOFFO

teSMV

)noitaludoMyticoleV(

FFOFFOFFOFFOFFOFFOFFO

1tracSNONONONONONONO
2tracSFFOFFOFFOFFOFFOFFOFFO

)3(nitnorFNONONONONONONO

edom9:61niBKANONONONONONONO

TXTNONONONONONONO

FOLFNONONONONONONO

POTNONONONONONONO

H/G/BmroNNONONONONONOFFO

ImroNFFONOFFOFFOFFOFFONO

K/DmroNFFONONONONONOFFO

LmroNFFONOFFOFFOFFOFFOFFO

teserPegaugnaLnailatIhcnerFnamreGhsinapSTRIOTRIOhsilgnE

WARNING ( KV-20WS1U only )

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.

ASA

T

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

FUSE

— 3 —

KV-20SW1

21 pin connector ( , )

G Y

Y

21
19
17
15
13
11

9
7
5
3
1

20
18
16
14
12
10

8

6
4
2

.oNniP 124 langiSleveLlangiS

1

2

3

4

5

6

7

8

9

01

11

21

31

41

51

61

71

81

91

02

12

Connected

BtuptuooiduA

)thgiR(

BtupnioiduA

)thgiR(

AtuptuooiduA

)tfeL(

)oiduA(dnuorG

)eulB(dnuorG

AtupnioiduA

)tfeL(

tupnieulB7.0±evitisop,smho57,Bd3

tcelesnoitcnuF

)lortnocVA(

)neerG(dnuorG

nepO

neerG

nepO

)deR(dnuorG

)gniknalB(dnuorG

tupnideR7.0±evitisop,smho57,Bd3

)langisS(

tupniamorc

tupnigniknalB

)langissY(

dnuorG

)tuptuooediV(

dnuorG

)tupnioediV(

tuptuooediV

tupnioediV

tupnioediV

)langisS(Y

dnuorgnommoC

)dliehs,gulp(

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

7.0±evitisop,smho57,Bd3

V1±,smho57,Bd3

V1±,smho57,Bd3

V1±,smho57,Bd3

smrV5.0:leveldradnatS

smrV5.0:leveldradnatS

smrV5.0:leveldradnatS

smrV5.0:leveldradnatS

edomVT:)V2-0(etatswoL

smho57:ecnadepmitupnI

*smhok1nahtsseL:ecnadepmituptuO

*smhok01nahteroM:ecnadepmituptuO

*mhok1nahtsseL:ecnadepmituptuO

*mhok01nahtsseL:ecnadepmituptuO

edomtraP:)V21-5.9(etatshgiH

smhok01eroM:ecnadepmitupnI
Fn2nahtsseL:ecnaticapactupnI

)V4.0-0(etatswoL)V3-1(etatshgiH

)Bd01+3-(V3.0:cnysevitisop

)Bd01+3-(V3.0:cnysevitisop

)Bd01+3-(V3.0:cnysevitisop

MONO
L/G/S/I

.oNniPlangiSleveLlangiS

1dnuorG

2

3

2dnuorG
3tupni)langisS(YV1± Bd01+3-V3.0.cnySevitisop,mho57Bd3
4tupni)langisS(CV3.0± .cnySevitisop,mho57Bd3

— 4 —

TABLE OF CONTENTS

Section Title PageSection Title Page

KV-20WS1

1. GENERAL

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

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

Menu Operation.................................................................

Teletext Operation .............................................................

Optional Connections ........................................................

Additional Information......................................................

2. DISASSEMBLY

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

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

2-3. Picture Tube Removal ................................................

3. SET-UP ADJUSTMENTS

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

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

3-3. Screen (G), Drive, White Balance,

Sub Colour and Sub Brightness..................................

3-4. Focus ..........................................................................

4. CIRCUIT ADJUSTMENTS

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

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

4-3. BE-5 Self Diagnostic Software ..................................

5. DIAGRAMS

7
9

9
12
13
13

14
14
15

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

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

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

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

* H Board ..................................................................

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

* U Board ...................................................................

* K Board ...................................................................

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

5-5. IC Block Diagrams.....................................................

6. EXPLODED VIEWS

16
17

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

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

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

18
18

19
20
22

23
28
28
33
36
38
42
42
43
45

47
48

49

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.

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.

CAUTION

WARNING !!

!

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.

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

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.

!

ATTENTION

ATTENTION !!

SÉCURITÉ!!

— 5 —

KV-20SW1

2-1. REAR COVER REMOVAL

SECTION 2

DISASSEMBLY

Rear Cover

2

2-2. SERVICE POSITION

A board

1

Four screws

(BVTP 4x16)

— 14 —