Read Sony KV-G21L3 Service Manual online
TRINITRON
®
COLOR TV
MODEL
COMMANDER DEST. CHASSIS NO.
KV-G21L3
RM-883
ME
SCC-J35Y-A
SERVICE MANUAL
MODEL
COMMANDER DEST. CHASSIS NO.
BG-1S (D)
CHASSIS
– 2 –
KV-G21L3
RM-883
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.
AND THE ANODE CAP TO THE METAL CHASSIS, CRT
SHIELD, OR CARBON PAINTED ON THE CRT, AFTER
REMOVING THE ANODE.
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 NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
SPECIFICATIONS
Note
Power requirements
110-240 V AC, 50/60 Hz
Power consumption (W)
Indicated on the rear of the TV
Television system
B/G
Color system
PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58 (AV IN)
Channel coverage
VHF: E2 to E12/UHF: E21 to E69/CATV: S01 to S03, S1 to S41
Audio output (speaker)
3W
Inputs
Antenna: 75 ohms
VIDEO IN jacks: phono jacks
Video: 1 Vp-p, 75 ohms
Audio: 500mVrms, high impedance
Outputs
Earphone jack: minijack
MONITOR OUT jacks: phono jacks
Video: 1 Vp-p, 75 ohms
Audio: 500 mVrms
Picture tube
21 in.
Tube size (cm)
54
Measured diagonally
Screen size (cm)
51
Measured diagonally
Dimensions (w/h/d, mm)
527
×
464
×
471
Mass (kg)
22
Design and specifications are subject to change without notice.
– 3 –
KV-G21L3
RM-883
TABLE OF CONTENTS
Section
Title
Page
Section
Title
Page
5. CIRCUIT ADJUSTMENTS
5-1.
Adjustment With Commander ................................. 19
5-2.
Adjustment Method ................................................. 20
5-3.
A Board, Adjustment After IC003
(MEMORY) Replacement ....................................... 23
(MEMORY) Replacement ....................................... 23
5-4.
Picture Distortion Adjustment ................................. 23
6. DIAGRAMS
6-1.
Block Diagram ......................................................... 25
6-2.
Circuit Boards Location .......................................... 27
6-3.
Schematic Diagrams and Printed Wiring Boards ... 27
(1)
Schematic Diagram of A Board .............................. 31
(2)
Schematic Diagram of C Board ............................. 35
6-4.
Semiconductors ........................................................ 37
7. EXPLODED VIEW
......................................................... 39
8. ELECTRICAL PARTS LIST
....................................... 41
1. GENERAL
........................................................................
4
2. DISASSEMBLY
2-1.
Rear Cover Removal ................................................ 11
2-2.
A Board Removal .................................................... 11
2-3.
Service Position ....................................................... 11
2-4.
Replacement of parts ............................................... 12
2-4-1.
Replacement of Multi Button ...........................
12
2-4-2.
Replacement of Light Guide and Power Button
.................................................................. 12
2-5.
Demagnetization Coil Removal .............................. 12
2-6.
Picture Tube Removal .............................................. 13
3. SET-UP ADJUSTMENTS
3-1.
Beam Landing .......................................................... 14
3-2.
Convergence ............................................................. 15
3-3.
Focus Adjustment .................................................... 17
3-4.
G2 (Screen) and White Balance Adjustment .......... 17
4. SELF DIAGNOSIS FUNCTION
................................ 18
– 4 –
KV
-G21L3
-G21L3
RM-883
SECTION 1
GENERAL
The operating instructions mentioned here are partial abstracts from the
Operating Instr uctions Manual. The page numbers of the Operating
Instruction Manual remain as in the manual.
Operating Instr uctions Manual. The page numbers of the Operating
Instruction Manual remain as in the manual.
2
MONITO
R
OUT
AUDIO
VIDEO
VIDEO
IN
1
2
3
3
B/G
I
D/K
M
TV SYSTEM
AUTO PROGR
TV SYSTEM
AUTO PROGR
p KV-J21MF3