Read Sony KV-21FS140 Service Manual online
TRINITRON
®
COLOR TELEVISION
SERVICE MANUAL
BX-1S
CHASSIS
MODEL NAME
REMOTE COMMANDER
DESTINATION
CHASSIS NO.
9-883-700-01
KV-21FS140
RM-YA005 ARGENTINA
SCC-S83A-A
Self Diagnosis
Supported model
KV-21FS140
RM-YA005
KV-21FS140
KV-21FS140
3
TABLE OF CONTENTS
SECTION TITLE
PAGE
SECTION TITLE
PAGE
Specifi cations ........................................................................... 4
Warnings and Cautions ............................................................ 5
Safety Check-Out ..................................................................... 6
Self-Diagnostic Function .......................................................... 7
SECTION 1: DISASSEMBLY ................................................................. 9
1-1. Rear Cover Removal ........................................................ 9
1-2. Chassis Assembly Removal ............................................. 9
1-3. Service Position .............................................................. 10
1-4. Picture Tube Removal .....................................................11
Anode Cap Removal Procedure ......................................11
SECTION 2: SET-UP ADJUSTMENTS ................................................ 12
2-1. Beam Landing ................................................................ 12
2-2. Convergence .................................................................. 13
2-3. Focus .............................................................................. 14
2-4. Screen (G2) .................................................................... 15
SECTION 3: CIRCUIT ADJUSTMENTS .............................................. 16
3-1. Remote Adjustment Buttons and Indicators ................... 16
3-2. Accessing the Service Menu Mode ................................ 17
3-3. Confi rming Service Adjustment Changes ....................... 18
3-4. White Balance Adjustments ............................................ 18
3-5. Picture Quality Adjustments ........................................... 18
SECTION 4: DIAGRAMS ..................................................................... 35
4-1. Circuit Boards Location .................................................. 35
4-2. Printed Wiring Board and
Schematic Diagram Information ..................................... 35
4-3. Block Diagrams and Schematics .................................... 36
Signal Flow Block Diagram ............................................ 36
4-4. Schematics and Supporting Information ........................ 37
A Board Schematic Diagram (1 of 6) ............................. 37
A Board Schematic Diagram (2 of 6) ............................. 38
A Board Schematic Diagram (3 of 6) ............................. 39
A Board Schematic Diagram (4 of 6) ............................. 40
A Board Schematic Diagram (5 of 6) ............................. 41
A Board Schematic Diagram (6 of 6) ............................. 42
C Board Schematic Diagram ......................................... 44
4-5. Semiconductors .............................................................. 46
SECTION 5: EXPLODED VIEWS ........................................................ 47
5-1. Picture Tube, Speakers and Chassis ............................ 47
SECTION 6: ELECTRICAL PARTS LIST ............................................ 48
KV-21FS140
KV-21FS140
4
SPECIFICATIONS
1) 1 Vp-p 75 ohms unbalanced, sync negative
2) Y: 1.0 Vp-p, 75 ohms, sync negative; PB: 0.7 Vp-p, 75 ohms;
PR Vp-p, 75 ohms.
3) 500
mVrms (100% modulation), Impedance: 47 kilohms
Design and specifi cations are subject to change without notice.
Corporation has determined that this
product meets the ENERGY STAR®
guidelines for energy efficiency. ENERGY
STAR® is a U.S. registered mark.
WEGA, FD Trinitron and Steady Sound are registered
trademarks of Sony Corporation.
Television system
American TV standard, NTSC
PAL-M/PAL-N
PAL-M/PAL-N
Channel coverage
VHF: 2-13/UHF: 14-69/CATV: 1-125
Antenna
75-ohm external antenna terminal for VHF/UHF
Picture tube
FD Trinitron
®
tube
Visible screen size
20-inch picture measured diagonally
Actual screen size
21-inch measured diagonally
Supplied Accessories
Remote Commander RM-YA005
Two Size AA (R6) Batteries
Cables: EAC-25
Two Size AA (R6) Batteries
Cables: EAC-25
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KV-21FS140
KV-21FS140
5
WARNINGS AND CAUTIONS
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.
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.
receiver is directly connected to the AC power line.
!
SAFETY-RELATED COMPONENT WARNING!!
Components identifi ed 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. Circuit adjustments that are critical for safe operation are identifi ed in this manual. Follow these procedures whenever critical
components are replaced or improper operation is suspected.
operation. Replace these components with Sony parts whose part numbers appear as shown in this manual or in supplements published
by Sony. Circuit adjustments that are critical for safe operation are identifi ed in this manual. Follow these procedures whenever critical
components are replaced or improper operation is suspected.
