Read Sony KV-28DS20U Service Manual online
5
TABLE OF CONTENTS
CAUTION
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND THE
ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR THE
CARBON PAINTED ON THE CRT, AFTER REMOVAL OF THE
ANODE CAP
ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR THE
CARBON PAINTED ON THE CRT, AFTER REMOVAL OF THE
ANODE CAP
WARNING !!
AN ISOLATING TRANSFORMER SHOULD BE USED DURING ANY
SERVICE WORK TO AVOID POSSIBLE SHOCK HAZARD DUE TO
LIVE CHASSIS. THE CHASSIS OF THIS RECEIVER IS DIRECTLY
CONNECTED TO THE POWER LINE.
SERVICE WORK TO AVOID POSSIBLE SHOCK HAZARD DUE TO
LIVE CHASSIS. THE CHASSIS OF THIS RECEIVER IS DIRECTLY
CONNECTED TO THE POWER LINE.
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY SHADING AND MARKED
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.
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.
ATTENTION
APRES AVOIR DECONNECTE LE CAP DE’LANODE,
COURT-CIRCUITER 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.
COURT-CIRCUITER 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 TENTION, UN TRANSFORMATEUR
D’ISOLEMENT DOIT ETRE UTILISÈ LORS DE TOUT DÈPANNAGE.
LE CHÁSSIS DE CE RÈCEPTEUR EST DIRECTMENT RACCORDÈ
Á L’ALIMENTATION SECTEUR.
D’UN CHÁSSIS SOUS TENTION, UN TRANSFORMATEUR
D’ISOLEMENT DOIT ETRE UTILISÈ LORS DE TOUT DÈPANNAGE.
LE CHÁSSIS DE CE RÈCEPTEUR EST DIRECTMENT RACCORDÈ
Á L’ALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS Á LA
SÈCURITÈ !!
LES COMPOSANTS IDENTIFIÈS PAR UNE TRAME ET PAR UNE
MARQUE
SUR LES SCHÈMAS DE PRINCIPE, LES VUES
EXPLOSÈES ET LES LISTES DE PIECES SONT D’UNE IMPORTANCE
CRITIQUE POUR LA SÈCURITÈ DU FONCTIONNEMENT, NE LES
REMPLACER QUE PAR DES COMPSANTS SONY DONT LE NUMÈRO
DE PIÈCE EST INDIQUÈ DANS LE PRÈSENT MANUEL OU DANS
DES SUPPLÈMENTS PUBLIÈS PAR SONY.
CRITIQUE POUR LA SÈCURITÈ DU FONCTIONNEMENT, NE LES
REMPLACER QUE PAR DES COMPSANTS SONY DONT LE NUMÈRO
DE PIÈCE EST INDIQUÈ DANS LE PRÈSENT MANUEL OU DANS
DES SUPPLÈMENTS PUBLIÈS PAR SONY.
Section
Title
Page
Section
Title
Page
Warning and Caution
.....................3
Self-Diagnostic Function
.....................6
1. GENERAL
Overview of the Remote
Control Buttons
Control Buttons
.....................10
Choosing a Language for the
TV Menu Screens
TV Menu Screens
.....................10
Automatically Tuning the TV
.....................11
Re-arranging the TV Channels
.....................11
Adjusting the Picture
.....................12
Adjusting the Sound
.....................12
Setting up Dolby Prologic
.....................13
Using the Further Programme
Preset Feature
Preset Feature
.....................13
Manually Tuning the TV
.....................14
Viewing Standard Teletext
.....................14
Viewing Digital Teletext
.....................15
Electronic Programme Guide (EPG).....................15
Specifications
Specifications
.....................17
Troubleshooting
.....................17
2. DISASSEMBLY
2-1.
Rear Cover Removal
.....................18
2-2.
Chassis Assy Removal
.....................18
2-3-1. Service Position (1)
.....................18
2-3-2. Service Position (2)
.....................18
2-4.
Wire Dressing
.....................19
2-5.
A Board Removal
.....................19
2-6.
A Extension Board
.....................19
2-7.
Picture Tube Removal
.....................20
Removal and Replacement of the
Main - Bracket Bottom Plates
Main - Bracket Bottom Plates
.....................21
3. SET-UP ADJUSTMENTS
3-1.
Beam Landing
.....................22
3-2.
Convergence
..................... 23
3-3.
Screen G2
.....................25
3-4.
Focus
.....................25
3-5.
White Balance
.....................26
4. CIRCUIT ADJUSTMENTS
4-1.
Electrical Adjustments
.....................27
4-2.
‘TT’ Test Mode
.....................30
4-3.
‘T’ Test Mode
.....................31
5. DIAGRAMS
5-1.
Block Diagrams (1)
.....................33
Block Diagrams (2)
.....................37
Block Diagrams (3)
.....................41
Block Diagrams (4)
.....................45
5-2.
Circuit Board Location
.....................48
5-3.
Schematic Diagrams and
Printed Wiring Boards
Printed Wiring Boards
.....................48
*
C Board
.....................49
*
D Board
.....................55
*
D2 Board
.....................58
*
A1 Board (KV-28DS20U/
KV- 32DS20U) .....................59
*
VM Board
.....................61
*
J Board (KV-28DS20U/
KV-32DS20U) .....................64
*
H Board
.....................66
*
A Board
.....................73
*
A2 Board
.....................79
*
D1 Board
.....................84
*
N Board
.....................89
5-4.
Semiconductors
.....................105
5-5.
IC Blocks
.....................107
6. EXPLODED VIEWS
6-1.
Chassis
.....................109
6-2.
Picture Tube
.....................110
6-3.
Centre Speaker and
Surround Speaker
(KV-28DS20U/32DS20U only)
Surround Speaker
(KV-28DS20U/32DS20U only)
.....................111
7. ELECTRICAL PARTS LIST
.....................112
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