Read Sony KV-20FS120 Service Manual online
TRINITRON
®
COLOR TELEVISION
SERVICE MANUAL
BA-6
CHASSIS
MODEL NAME
REMOTE COMMANDER
DESTINATION
CHASSIS NO.
9-965-959-04
KV-20FS120
RM-Y194
US
SCC-
S61K-A
KV-20FS120
RM-Y194
CND
SCC-
S59H-A
KV-21FM120
RM-W151
LATIN
NORTH SCC-
S60X-A
KV-21FS120
RM-Y194
LATIN
NORTH
SCC-
S60Y-A
KV-21FS120
RM-Y194
LATIN SOUTH
SCC- S73A-A
KV-21FA310
RM-Y180
LATIN
NORTH
SCC-
S60T-A
KV-21FA310
RM-Y180
LATIN SOUTH
SCC- S60U-A
KV-24FS120
RM-Y194
US
SCC-
S61L-A
KV-24FS120
RM-Y194
CND
SCC-
S59J-A
KV-25FS120
RM-Y194
LATIN
NORTH
SCC-
S73B-A
KV-25FS120
RM-Y194
LATIN SOUTH
SCC- S73C-A
Self Diagnosis
Supported model
KV-24FS120
KV-21FA310
3
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
TABLE OF CONTENTS
SECTION TITLE
PAGE
Specifi cations ............................................................................................................................................................................. 4
Warnings and Cautions .............................................................................................................................................................. 6
Safety Check-Out ....................................................................................................................................................................... 7
Self-Diagnostic Function............................................................................................................................................................. 8
Warnings and Cautions .............................................................................................................................................................. 6
Safety Check-Out ....................................................................................................................................................................... 7
Self-Diagnostic Function............................................................................................................................................................. 8
SECTION 1: DISASSEMBLY........................................................................................................................................................... 10
1-1. Rear Cover Removal (All Except KV-21FA310) ............................................................................................................... 10
1-2. Rear Cover Removal (KV-21FA310 Only)........................................................................................................................ 10
1-3. Chassis Assembly Removal..............................................................................................................................................11
1-4. Service Position ................................................................................................................................................................11
1-5. Picture Tube Removal...................................................................................................................................................... 12
1-2. Rear Cover Removal (KV-21FA310 Only)........................................................................................................................ 10
1-3. Chassis Assembly Removal..............................................................................................................................................11
1-4. Service Position ................................................................................................................................................................11
1-5. Picture Tube Removal...................................................................................................................................................... 12
Anode Cap Removal Procedure....................................................................................................................................... 12
SECTION 2: SET-UP ADJUSTMENTS............................................................................................................................................ 13
2-1. Beam Landing .................................................................................................................................................................. 13
2-2. Convergence.................................................................................................................................................................... 14
2-3. Focus ............................................................................................................................................................................... 15
2-4. Screen (G2)...................................................................................................................................................................... 16
2-5. Method of Setting the Service Adjustment Mode ............................................................................................................. 16
2-6. White Balance Adjustments ............................................................................................................................................. 16
2-2. Convergence.................................................................................................................................................................... 14
2-3. Focus ............................................................................................................................................................................... 15
2-4. Screen (G2)...................................................................................................................................................................... 16
2-5. Method of Setting the Service Adjustment Mode ............................................................................................................. 16
2-6. White Balance Adjustments ............................................................................................................................................. 16
SECTION 3: SAFETY RELATED ADJUSTMENTS......................................................................................................................... 17
3-1. X R565 Confi rmation Method (HV Hold-Down Confi rmation) and Readjustments ........................................................ 17
3-2. B+ Voltage Confi rmation and Adjustment ........................................................................................................................ 17
3-2. B+ Voltage Confi rmation and Adjustment ........................................................................................................................ 17
SECTION 4: CIRCUIT ADJUSTMENTS.......................................................................................................................................... 19
4-1. Setting the Service Adjustment Mode .............................................................................................................................. 19
4-2. Memory Write Confi rmation Method ................................................................................................................................ 19
4-3. Remote Adjustment Buttons and Indicators ..................................................................................................................... 19
4-4. Service Data Lists ............................................................................................................................................................ 20
4-5. ID Map Table .................................................................................................................................................................... 34
4-6. A Board Adjustments........................................................................................................................................................ 34
4-2. Memory Write Confi rmation Method ................................................................................................................................ 19
4-3. Remote Adjustment Buttons and Indicators ..................................................................................................................... 19
4-4. Service Data Lists ............................................................................................................................................................ 20
4-5. ID Map Table .................................................................................................................................................................... 34
4-6. A Board Adjustments........................................................................................................................................................ 34
SECTION 5: DIAGRAMS................................................................................................................................................................. 37
5-1. Circuit Boards Location .................................................................................................................................................... 37
5-2. Printed Wiring Board and Schematic Diagram Information.............................................................................................. 37
5-3. Block Diagram and Schematics ....................................................................................................................................... 38
5-2. Printed Wiring Board and Schematic Diagram Information.............................................................................................. 37
5-3. Block Diagram and Schematics ....................................................................................................................................... 38
A Board Schematic Diagram ............................................................................................................................................ 39
HB Board Schematic Diagram (All Except KV-21FA310)................................................................................................ 41
HR Board Schematic Diagram (KV-21FA310 Only) ........................................................................................................ 44
CV Board Schematic Diagram ......................................................................................................................................... 45
K Board Schematic Diagram (KV-21FA310 Only)............................................................................................................ 49
HB Board Schematic Diagram (All Except KV-21FA310)................................................................................................ 41
HR Board Schematic Diagram (KV-21FA310 Only) ........................................................................................................ 44
CV Board Schematic Diagram ......................................................................................................................................... 45
K Board Schematic Diagram (KV-21FA310 Only)............................................................................................................ 49
5-4. Semiconductors ............................................................................................................................................................... 51
SECTION 6: EXPLODED VIEWS .................................................................................................................................................... 52
6-1. Picture Tube (KV-20FS120/21FS120 Only) ..................................................................................................................... 52
6-2. Chassis (KV-20FS120/21FS120 Only)............................................................................................................................. 53
6-3. Picture Tube (KV-21FM120 Only) .................................................................................................................................... 54
6-4. Chassis (KV-21FM120 Only)............................................................................................................................................ 55
6-5. Picture Tube (KV-21FA310 Only) ..................................................................................................................................... 56
6-6. Chassis (KV-21FA310 Only) ............................................................................................................................................ 57
6-7. Picture Tube (KV-24FS120/25FS120 Only) ..................................................................................................................... 58
6-8. Chassis (KV-24FS120/25FS120 Only)............................................................................................................................. 59
6-2. Chassis (KV-20FS120/21FS120 Only)............................................................................................................................. 53
6-3. Picture Tube (KV-21FM120 Only) .................................................................................................................................... 54
6-4. Chassis (KV-21FM120 Only)............................................................................................................................................ 55
6-5. Picture Tube (KV-21FA310 Only) ..................................................................................................................................... 56
6-6. Chassis (KV-21FA310 Only) ............................................................................................................................................ 57
6-7. Picture Tube (KV-24FS120/25FS120 Only) ..................................................................................................................... 58
6-8. Chassis (KV-24FS120/25FS120 Only)............................................................................................................................. 59
SECTION 7: ELECTRICAL PARTS LIST....................................................................................................................................... 60
4
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
SPECIFICATIONS
1) 1 Vp-p 75 ohms unbalanced, sync negative
2) Y: 1 Vp-p 75 ohms unbalanced, sync negative
C: 0.286 Vp-p (Burst signal), 75 ohms
3) Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative;
P
B
: 0.7 Vp-p, 75 ohms
P
R
: 0.7 Vp-p, 75 ohms
4) 500 mVrms (100% modulation), Impedance: 47 kilohms
5) More than 408 mVrms at the maximum volume setting (variable)
More than 408 mVrms (fi x); Impedance (output): 2 kilohms
6) This specifi cation is maximum wattage.
KV-20FS120
KV-21FM120
KV-21FS120 (N)
KV-21FS120 (S)
Power Requirements
120V, 60Hz
120V, 60Hz
120V, 60Hz
220V, 50/60Hz
Number of Inputs/Outputs
Video
1)
2
2
2
2
S Video
2)
0
0
0
0
Y,P
B
, P
R
3)
1
0
1
1
Audio
4)
4
2
4
4
Audio Out
5)
0
0
0
0
Speaker Output (W)
10W x 2
5W x 2
10W x 2
10W x 2
Headphones
1
1
1
1
Power Consumption (W)
In Use (Max)
140W
125W
140W
135W
In Standby (Max)
6)
1W
1W
1W
1W
Dimensions (W x H x D)
mm
631 x 468 x 490.5 mm
631 x 468 x 490.5 mm
631 x 468 x 490.5 mm
631 x 468 x 490.5 mm
in
24
7/8
x 18 3
/8
x 19
1/4
in
24
7/8
x 18 3
/8
x 19
1/4
in
24
7/8
x 18 3
/8
x 19
1/4
in
24
7/8
x 18 3
/8
x 19
1/4
in
Mass
kg
25.2 kg
25.2 kg
25.2 kg
25.2 kg
lbs
55 lbs 9 oz
55 lbs 9 oz
55 lbs 9 oz
55 lbs 9 oz
KV-21FA310 (N)
KV-21FA310 (S)
KV-24FS120
KV-25FS10 (N)
KV-25FS120 (S)
Power Requirements
120V, 60Hz
220V, 50/60Hz
120V, 60Hz
220V, 50/60Hz
Number of Inputs/Outputs
Video
1)
2
2
2
2
S Video
2)
1
1
1
1
Y,P
B
, P
R
3)
1
1
1
1
Audio
4)
4
4
4
4
Audio Out
5)
1
1
1
1
Speaker Output (W)
5W x 3
5W x 3
10W x 2
10W x 2
Subwoofer
15W
15W
NA
NA
Headphones
1
1
1
1
Power Consumption (W)
In Use (Max)
155W
150W
165W
160W
In Standby (Max)
6)
1W
1W
1W
1W
Dimensions (W x H x D)
mm
609 x 540 x 503 mm
609 x 540 x 503 mm
718 x 526.5 x 480 mm
718 x 526.5 x 480 mm
in
24 x 21
1/4
x 19
3/4
in
24 x 21
1/4
x 19
3/4
in
28
1/4
x 20
3/4
x 18
7/8
in
28
1/4
x 20
3/4
x 18
7/8
in
Mass
kg
28.6 kg
28.6 kg
32.8 kg
32.8 kg
lbs
63 lbs
63 lbs
72 lbs 5 oz
72 lbs 5 oz
5
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
Television system
American TV standard, NTSC
Channel coverage
VHF: 2-13/ UHF: 14-69/ CATV: 1-125
Picture tube
FD Trinitron
®
tube
Visible screen size
20-inch picture measured diagonally
(KV-20FS120/21FM120/21FS120/21FA310 Only)
24-inch picture measured diagonally
(KV-24FS120/25FS120 Only)
Actual screen size
21-inch measured diagonally
(KV-20FS120/21FM120/21FS120/21FA310 Only)
25-inch measured diagonally
(KV-24FS120/25FS120 Only)
Antenna
75 ohm external terminal for VHF/UHF
Supplied Accessories
Remote Commander RM-Y194
(KV-20FS120/21FS120/24FS120/25FS120 Only)
Remote Commander RM-W151
(KV-21FM120 Only)
Remote Commander RM-Y180
(KV-21FM120 Only)
Remote Commander RM-Y180
(KV-21FA310 Only)
Two Size AA (R6) Batteries
Antenna, Telescopic
Antenna, Telescopic
(KV-21FM120/21FS120/21FA310/25FS120 Only)
SRS (SOUND RETRIEVAL SYSTEM)
The
SRS (SOUND RETRIEVAL SYSTEM) is manufactured
by Sony Corporation under license from SRS Labs, Inc. It is
covered by U.S. Patent No. 4,748,669. Other U.S. and foreign
patents pending.
covered by U.S. Patent No. 4,748,669. Other U.S. and foreign
patents pending.
The word ‘SRS’ and the SRS symbol
are registered trade-
marks of SRS Labs, Inc. BBE and BBE symbol are trademarks of
BBE Sound, Inc. and are licensed by BBE Sound, Inc. under U.S.
Patent No. 4,638,258 and 4,482,866.
BBE Sound, Inc. and are licensed by BBE Sound, Inc. under U.S.
Patent No. 4,638,258 and 4,482,866.
© 2004 Dolby Laboratories, Inc.
Dolby, Pro Logic, and the double-D symbol are registered
trademarks of Dolby Laboratories.
Dolby, Pro Logic, and the double-D symbol are registered
trademarks of Dolby Laboratories.
Design and specifi cations are subject to change without notice.
TruSurround
™
by
SRS
®
TruSurround is a trademark of SRS Labs, Inc. SRS and the SRS
symbol are registered trademarks of SRS Labs, Inc. in the United
States and in select foreign countries. SRS and TruSurround are
incorporated under license from SRS Labs, Inc. and are protected
under United States Patent Nos. 4,748,669 and 4,841,572 with
numerous additional issued and pending foreign patents. Pur-
chase of this product does not convey the right to sell recordings
made with the TruSurround technology.
symbol are registered trademarks of SRS Labs, Inc. in the United
States and in select foreign countries. SRS and TruSurround are
incorporated under license from SRS Labs, Inc. and are protected
under United States Patent Nos. 4,748,669 and 4,841,572 with
numerous additional issued and pending foreign patents. Pur-
chase of this product does not convey the right to sell recordings
made with the TruSurround technology.