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.
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.
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
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
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.
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
5
KV
-G21L3
RM-883
Getting Started
-EN
4
MONIT
OR
OUT
AUD
IO V
IDEO
VIDEO
IN
Connections
Connecting a VHF antenna or a combination VHF/UHF antenna
-- 75-ohm coaxial cable (round)
Attach an optional IEC antenna connector to the 75-ohm coaxial cable.
Plug the connector into the
(antenna) socket at the rear of the TV.
Getting Started
Rear of TV
Rear of TV
Connecting an indoor antenna
Note
· You are advised to use an outdoor antenna for better reception.
2
1
On a wall
or
3
Getting Started
5-EN
EN
Connecting optional equipment
You can connect optional audio/video equipment to your TV such as a VCR, multi disc player, camcorder, video
game or stereo system.
Connecting video equipment using video input jacks
p
KV-G21L3
When connecting a monaural VCR
Connect the yellow plug to VIDEO and the black plug to AUDIO-L (MONO).
p
KV-G21L3
When using the video input jacks
Do not connect video equipment to the video input jacks at the front and the rear of your TV simultaneously; otherwise the picture will
not be displayed properly on the screen.
to antenna
output
VIDEO IN
Rear of TV
to antenna socket
VIDEO
AUDIO
VIDEO
IN
MONITOR
OUT
: Signal flow
VCR
to video
and audio
outputs
Front of TV
VIDEO
VIDEO INPUT
AUDIO
Camcorder
to video and
audio outputs
: Signal flow