DOWNLOAD Sony KDS-50A2020 / KDS-55A2020 / KDS-60A2020 Service Manual ↓ Size: 7.73 MB | Pages: 127 in PDF or view online for FREE

Model
KDS-50A2020 KDS-55A2020 KDS-60A2020
Pages
127
Size
7.73 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kds-50a2020-kds-55a2020-kds-60a2020.pdf
Date

Sony KDS-50A2020 / KDS-55A2020 / KDS-60A2020 Service Manual ▷ View online

– 8 –
KDS-50A2020/55A2020/60A2020
K
RM-YD010      RM-YD010      RM-YD010
CAUTION
These servicing instructions are for use by qualified service per-
sonnel only.
To reduce the risk of electric shock, do not perform any servicing
other than that contained in the operating instructions unless you
are qualified to do so.
WARNING!!
AN ISOLATION TRANSFORMER SHOULD BE USED DURING
ANY SERVICE TO AVOID POSSIBLE SHOCK HAZARD, BE-
CAUSE OF LIVE CHASSIS.
THE CHASSIS OF THIS RECElVER 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 TO SAFE OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART NUM-
BERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE-
MENTS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT
ARE CRITICAL TO SAFE OPERATION ARE IDENTIFIED IN THIS
MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITI-
CAL COMPONENTS ARE REPLACED OR IMPROPER OPERA-
TION IS SUSPECTED.
ATTENTION!!
AFIN D’EVITER TOUT RISQUE DELECTROCUTION PROVE-
NANT D’UN CHÁSSIS SOUS TENSION, UN TRANSFORMATEUR
D’ISOLEMENT DOIT ETRE UTILISÉ LORS DE TOUT DEPAN-
NAGE.
LE CHÁSSIS DE CE RECEPTEUR EST DIRECTEMENT RAC-
CORDÉ Á L’ALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS ÁLA
SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE FRAME ET PAR UNE
MAPQUE 
! SUR LES SCHÉMAS DE PRINCIPE, LES VUES EX-
PLOSÉES ET LES LISTES DE PIECES SONT D’UNE IMPORTANCE
CRITIQUE POUR LA SÉCURITÉ DU FONCTIONNEMENT. NE LES
REMPLACER QUE PAR DES COMPOSANTS SONY DONT LE
NUMÉRO DE PIÉCE EST INDIQUÉ DANS LE PRÉSENT MAN-
UEL OU DANS DES SUPPLÉMENTS PUBLIÉS PAR SONY. LES
RÉGLAGES DE CIRCUIT DONT L’IMPORTANCE EST CRITIQUE
POUR LA SÉCURITÉ DU FONCTIONNEMENT SONT IDENTIFIES
DANS LE PRÉSENT MANUEL. SUIVRE CES PROCÉDURES
LORS DE CHAQUE REMPLACEMENT DE COMPOSANTS CRI-
TIQUES, OU LORSQU’UN MAUVAIS FONCTIONNEMENT SUS-
PECTÉ.
– 9 –
KDS-50A2020/55A2020/60A2020
K
RM-YD010      RM-YD010      RM-YD010
TABLE OF CONTENTS
Section
Title
Page
––––––
––––
––––
Section
Title
Page
––––––
––––
––––
SPECIFICATIONS
.......................................................
2
REPLACING THE LAMP
...........................................
3
1. SELF  DIAGNOSIS  FUNCTION
.....................
11
2. DISASSEMBLY
2-1.
Rear Cover ..........................................................
14
2-2.
Chassis Block .....................................................
15
2-3.
Shield ATSC .......................................................
16
2-4.
Terminal Bracket ................................................
16
2-5.
QT Board, QM Board .........................................
17
2-6.
Main Shield ........................................................
18
2-7.
A1, B1, S1 Boards ..............................................
18
2-8.
Lamp Fan Unit ....................................................
19
2-9.
Power Block .......................................................
19
2-10. Scirocco Fan .......................................................
20
2-11. Unit Cover Assembly .........................................
20
2-12. Optics Block Assembly ......................................
21
2-13. Screen Frame Block Assembly ..........................
22
2-14. Terminal Bracket (FR) .......................................
22
2-15. Mirror Cover Block ............................................
23
3. ADJUSTMENTS
3-1. Mechanical Adjustments ....................................... 24-1
3-1-1. Picture Distortion Correction Mechanism .......... 24-1
1). V-TRAP Correction 1 ....................................... 24-1
2). V-TRAP Correction 2 ....................................... 24-1
3). Picture Rotation Correction 1 ........................... 24-1
4). Picture Rotation Correction 2 ........................... 24-1
3-2. Electrical Adjustments ........................................... 24-2
3-2-1. Electrical Adjustment by Remote Commander .. 24-2
3-2-1-1. Method of Setting the Service Adjustment
Mode ........................................................... 24-2
3-2-1-2. Service Mode Adjustment ........................ 24-2
3-2-1-3. Memory Write Confirmation Method ...... 24-2
3-2-1-4. Adjusting Buttons and Indicator ............... 24-2
3-2-2. To Read Lamp and Panel Time .......................
25
3-2-3. Test Reset .........................................................
25
3-2-4. H/V Center Confirmation and Adjustment ......
25
4. DIAGRAMS
4-1.
Block Diagram (1) ..............................................
26
Block Diagram (2) ..............................................
27
Block Diagram (3) ..............................................
28
Block Diagram (4) ..............................................
29
Block Diagram (5) ..............................................
30
Block Diagram (6) ..............................................
31
Block Diagram (7) ..............................................
32
Block Diagram (8) ..............................................
33
Block Diagram (9) ..............................................
34
Block Diagram (10) ............................................
35
4-2.
Frame Schematic Diagram .................................
36
4-3.
Circuit Boards Location .....................................
37
4-4.
Schematic Diagrams ...........................................
37
(1)
Schematic Diagram of A1 (1/6) Board ..............
38
(2)
Schematic Diagram of A1 (2/6) Board .............
39
(3)
Schematic Diagram of A1 (3/6) Board .............
40
(4)
Schematic Diagram of A1 (4/6) Board .............
41
(5)
Schematic Diagram of A1 (5/6) Board .............
42
(6)
Schematic Diagram of A1 (6/6) Board ..............
43
(7)
Schematic Diagram of B1 (1/11) Board ...........
44
(8)
Schematic Diagram of B1 (2/11) Board ...........
45
(9)
Schematic Diagram of B1 (3/11) Board ...........
46
(10) Schematic Diagram of B1 (4/11) Board ...........
47
(11) Schematic Diagram of B1 (5/11) Board ............
48
(12) Schematic Diagram of B1 (6/11) Board ............
49
(13) Schematic Diagram of B1 (7/11) Board ............
50
(14) Schematic Diagram of B1 (8/11) Board ...........
51
(15) Schematic Diagram of B1 (9/11) Board ...........
52
(16) Schematic Diagram of B1 (10/11) Board ..........
53
(17) Schematic Diagram of B1 (11/11) Board .........
54
(18) Schematic Diagram of C (1/11) Board .............
55
(19) Schematic Diagram of C (2/11) Board .............
56
(20) Schematic Diagram of C (3/11) Board .............
57
(21) Schematic Diagram of C (4/11) Board .............
58
(22) Schematic Diagram of C (5/11) Board ..............
59
(23) Schematic Diagram of C (6/11) Board ..............
60
(24) Schematic Diagram of C (7/11) Board ..............
61
(25) Schematic Diagram of C (8/11) Board .............
62
(26) Schematic Diagram of C (9/11) Board .............
63
(27) Schematic Diagram of C (10/11) Board ............
64
(28) Schematic Diagram of C (11/11) Board ............
65
(29) Schematic Diagram of G (1/2) Board ................
66
(30) Schematic Diagram of G (2/2) Board ...............
67
– 10 –
KDS-50A2020/55A2020/60A2020
K
RM-YD010      RM-YD010      RM-YD010
Section
Title
Page
––––––
––––
––––
(31) Schematic Diagram of H1 Board ......................
68
(32) Schematic Diagram of H2 Board .......................
69
(33) Schematic Diagram of H3 Board .......................
70
(34) Schematic Diagram of QM (1/6) Board ............
71
(35) Schematic Diagram of QM (2/6) Board ............
72
(36) Schematic Diagram of QM (3/6) Board ............
73
(37) Schematic Diagram of QM (4/6) Board ............
74
(38) Schematic Diagram of QM (5/6) Board ............
75
(39) Schematic Diagram of QM (6/6) Board ............
76
(40) Schematic Diagram of QT Board ......................
77
(41) Schematic Diagram of S1, S2 Boards ................
78
(42) Schematic Diagram of T Board .........................
79
4-5.
Printed Wiring Boards ........................................
80
(1)
A1 Board (Side A) ..............................................
80
(2)
A1 Board (Side B) ..............................................
81
(3)
B1 Board (Side A) ..............................................
82
(4)
B1 Board (Side B) ..............................................
83
(5)
C Board (Side A) ................................................
84
(6)
C Board (Side B) ................................................
85
(7)
G Board (Side A) ................................................
86
(8)
G Board (Side B) ................................................
87
(9)
H1, H2 Boards ....................................................
88
(10) H3 Board .............................................................
89
(11) QM Board (Side A) ............................................
90
(12) QM Board (Side B) ............................................
91
(11) QT Board (Side A) .............................................
92
(12) QT Board (Side B) .............................................
93
(13) S1, S2, T Boards .................................................
94
4-6.
Semiconductors ..................................................
95
5. EXPLODED VIEWS
5-1.
Screen, Covers ....................................................
96
5-2.
Chassis Assembly ...............................................
97
5-3.
Optics Block .......................................................
98
6. ELECTRICAL  PARTS  LIST
• A1 Board ...................................................................
99
• B1 Board ................................................................... 112
• C Board ..................................................................... 122
• G Board ..................................................................... 133
• H1 Board ................................................................... 137
• H2 Board ................................................................... 137
• H3 Board ................................................................... 137
• QM Board ................................................................. 138
• QT Board .................................................................. 143
• S1 Board .................................................................... 144
• S2 Board .................................................................... 144
• T Board ..................................................................... 144
Section
Title
Page
––––––
––––
––––
– 11 –
KDS-50A2020/55A2020/60A2020
K
RM-YD010      RM-YD010      RM-YD010
SECTION 1
SELF DIAGNOSIS FUNCTION
1. Summary of Self-Diagnosis Function
- This device includes a self-diagnosis function.
- In case of abnormalities, the POWER indicator automatically blinks. It is possible to
predict the abnormality location by the number of blinks. The Instruction Manual
describes blinking of the POWER indicator.
- If the symptom is not reproduced sometimes in case of a malfunction, there is recording of
whether a malfunction was generated or not. Operate the remote command to confirm the
matter on the screen and to predict the location of the abnormality.
2. Diagnosis Items and Prediction of Malfunction Location
- When a malfunction occurs the POWER indicator only blinks for one of the
following diagnosis items. In case of two or more malfunctions, the item which first
occurred blinks. If the malfunctions occurred simultaneously, the item with the lower
blink count blinks first.
- The screen display displays the results regarding all the diagnosis items listed below.
The display "0" means that no malfunctions occurred.
Defected symptoms
La
Temp. over
mp cover
3
2 times
times
- L
-The periphery of lamp
  heats up abnormally
amp cover is not
attached securely.
Diagnosis Item
Number of times
POWER
indicator blinks
Probable Cause
Location
Lamp driver
5 times
- Lamp driver is faulty.
- No picture/No sound
Power error
6 times
- D5V is not
supplied.
- No picture/No sound
- Lamp for the light
source burns out.
- No picture/No sound
- Speaker line is shorted.
Power OVP
8 times
-7V is over voltage.
- No picture/No sound
Fan error
4 times
- Fan connector is not
attached securely.
- No picture/No sound
Lamp error
LAMP-LED flashes
- No picture/No sound
Audio prot
7 times
- No picture/No sound
- No picture/No sound
Temperature sensors, 
Bus decoder ICs 
(IC2000, 3150, 3200, 
8804)
Device error
9 times
-No picture
- Fan1, 3, 4 power is not
supplied.
Page of 127
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