background image
MODEL
COMMANDER DEST.
CHASSIS NO.
MODEL
COMMANDER DEST.
CHASSIS NO.
KV-G14L2J
RM-869 ME
SCC-U07G-A
KV-G21M2J
RM-869 ME
SCC-U07F-A
SERVICE MANUAL
BG-2S CHASSIS
TRINITRON ® COLOR TV


background image
KV-G14L2J/G21M2J
RM-869
­ 2 ­
KV-G14L2J
KV-G21M2J
Note
Power requirements
110-240 V AC, 50/60 Hz
Power consumption (W) Indicated on the rear of the TV
Television system
B/G
B/G, I, D/K, M
Color system
PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58 (AV IN) PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58
Channel coverage
B/G
VHF: E2 to E12 / UHF: E21 to E69 / CATV: S01 to S03, S1 to S41
I
­
UHF: B21 to B68 / CATV: S01 to S03, S1 to S41
D/K
VHF: C1 to C12, R1 to R12/
­
UHF: C13 to C57, R21 to R60/
CATV: Z1 to Z39, S01 to S03, S1 to S41
M
­
VHF: A2 to A13 / UHF: A14 to A79 /
CATV: A-8 to A-2, A to W+ 4, W+ 6 to W+ 84
Audio output (speaker)
3W
Inputs
(antenna): 75 ohms external terminal
...
(video input) jacks: phono jacks
D
(video): 1 Vp-p, 75 ohms
(audio): 500 mVrms, high impedance
Outputs
A
(earphone) jack: mini jack
Ú
(monitor output) jacks: phono jacks
D (video): 1 Vp-p, 75 ohms
(audio): 500 mVrms
Picture tube
14 in.
21in
Tube size (cm)
37
54
Measured
diagonally
Screen size (cm)
34
51
Measured
diagonally
Dimensions (w/h/d, mm)
373
× 346 × 412
516
× 464 × 478
Mass (kg)
11
22
SPECIFICATIONS
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.
Design and specifications are subject to change without notice.


background image
KV-G14L2J/G21M2J
RM-869
­ 3 ­
TABLE OF CONTENTS
1. GENERAL ....................................................................
4
2. DISASSEMBLY
2-1.
Rear Cover Removal ...........................................
9
2-2.
A Board Removal ................................................
9
2-3.
Service Position ...................................................
9
2-4.
Replacement of Parts ...........................................
10
2-5.
Terminal Board Bracket Removal .......................
10
2-6.
Demagnetization Coil Removal ..........................
10
2-7.
Picture Tube Removal ..........................................
11
3. SET-UP ADJUSTMENTS
3-1.
Beam Landing ......................................................
12
3-2.
Convergence ........................................................
13
3-3.
Focus Adjustment ................................................
14
3-4.
G2 (Screen) and White Balance Adjustments .....
15
4. SELF DIAGNOSIS FUNCTION ............................
16
5. CIRCUIT ADJUSTMENTS
5-1.
Adjustments with Commander ............................
17
5-2.
Adjustment Method .............................................
18
5-3.
A Board Adjustment after IC003 (Memory)
Replacement .........................................................
22
5-4.
Picture Distortion Adjustment .............................
22
6. DIAGRAMS
6-1.
Block Diagram ......................................................
23
6-2.
Circuit Boards Location .......................................
26
6-3.
Schematic Diagrams and Printed Wiring Boards
26
(1)
Schematic Diagram of A Board ...........................
31
(2)
Schematic Diagram of C Board ...........................
36
6-4.
Semiconductors .....................................................
40
7. EXPLODED VIEW
7-1.
Chassis ..................................................................
42
8. ELECTRICAL PARTS LIST ...................................
43
Section
Title
Page
Section
Title
Page


background image
­
4
­
KV
-G14L2J/G21M2J
RM-869
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 this manual.
3
1
­ PROGR +
SELECT
­ PROGR +
­ VOLUME +
TV/VIDEO
SELECT
VHF
LOW
B/G
1
2
3
1
2


background image
KV
-G14L2J/G21M2J
RM-869
­
5
­
5
Getting Started
-EN
Connecting optional equipment
You can connect optional audio/video equipment to your TV such as a VCR, multi disc player, camcorder, or video
game.
Connecting video equipment using the ... (video input) jack
D
...
to video and
audio outputs
: Signal flow
to ...
(video input)
D(video) and
(audio) inputs
to antenna
output
to video
and audio
outputs
VCR
Ú
...
D
: Signal flow
to ...
(video input)
D(video) and
(audio) inputs
When connecting video equipment to the ... (video input) jack
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.
Connecting audio/video equipment using the Ú (monitor output) jack
Rear of TV
to antenna socket
Camcorder
Front of TV
When recording through the Ú (monitor output) jack
Do not change the channel or video input while recording with a VCR; otherwise the channel or video input you are recording also will be
changed.
: Signal flow
VCR
to antenna
output
Ú
...
D
to video
and audio
inputs
to Ú
(monitor output)
D (video) and
(audio) outputs
to antenna socket
Rear of TV
Getting Started
4-EN
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.
Connecting an indoor antenna
On a wall
3
1
2
Note
· You are advised to use an outdoor antenna for better reception.
or
Getting Started
Rear of TV
Rear of TV