MODEL
COMMANDER DEST.
CHASSIS NO.
KV-G14K7
RM-883 Vietnam
SCC-K26Q-A
KV-G21KD7
RM-883 Vietnam
SCC-K26R-A
SERVICE MANUAL
MODEL
COMMANDER DEST. CHASSIS NO.
TRINITRON ® COLOR TV
RM-883
KV-G14K7
KV-G21KD7
BG-1S (D)
<REFINE>
CHASSIS
2
KV-G14K7/G21KD7
RM-883
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.
Note
Power requirements
110-240 V AC, 50/60 Hz
Power consumption (W) Indicated on the rear of the TV
Television system
B/G, D/K
Color system
PAL, PAL 60, NTSC4.43, NTSC3.58 (AV IN)
Channel coverage
B/G
VHF: E2 to E12/UHF: E21 to E69/CATV: S01 to S03, S1 to S41
D/K
VHF: C1 to C2, R1 to R/12/UHF: C13 to C57, R21 to R/60/
CATV: S01 to S03, S1 to S41, Z1 to Z39
Audio output (speaker)
3W
Inputs
Antenna: 75 ohms
VIDEO IN jacks: phono jacks
Video: 1 Vp-p, 75 ohms
Audio: 500 mVrms, high impedance
Outputs
Earphone jack: minijack
MONITOR OUT jacks: phono jacks
Video: 1 Vp-p, 75 ohms
Audio: 500 mVrms
Picture tube
14 in.
21 in.
Tube size (cm)
37
54
Measured diagonally
Screen size (cm)
34
51
Measured diagonally
Dimensions (w/h/d, mm) 369
× 347 × 403
527
× 464 × 471
Mass (kg)
11
22
KV-G14K7
KV-G21KD7
Design and specifications are subject to change without notice.
3
KV-G14K7/G21KD7
RM-883
TABLE OF CONTENTS
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 ...........................................
11
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 Adjustments .....
18
4. SELF DIAGNOSIS FUNCTION ......................
19
5. CIRCUIT ADJUSTMENTS
5-1.
Adjustments with Commander ............................
20
5-2.
Adjustment Method .............................................
21
5-3.
A Board Adjustment after IC003 (Memory)
Replacement.........................................................
24
5-4.
Picture Distortion Adjustment .............................
24
6. DIAGRAMS
6-1.
Block Diagrams ....................................................
27
6-2.
Circuit Boards Location .......................................
30
6-3.
Schematic Diagrams and Printed Wiring Boards
(1)
Schematic Diagram of A Board ............................
35
(2)
Schematic Diagrams of A11 and C Boards ..........
39
6-4.
Semiconductors .....................................................
45
7. EXPLODED VIEWS
7-1.
Chassis (KV-G14K7) ............................................
47
7-2.
Chassis (KV-G21KD7) .........................................
48
8. ELECTRICAL PARTS LIST .............................
49
Section
Title
Page
Section
Title
Page
4
KV
-G14K7/G21KD7
RM-883
SECTION 1
GENERAL
The operating instructions mentioned here are partial abstracts from the
Operating Instructions Manual. The page numbers of the Operating
Instruction Manual remain as in the manual.
2
MONITOR
OUT
AUDIO
VIDEO
VIDEO
IN
3
2
1
p
KV-G21KD7
3
TV SYSTEM
AUTO PROGR
B/G
I
D/K
M
TV SYSTEM
AUTO PROGR
B/G
D/K
TV SYSTEM
5
KV
-G14K7/G21KD7
RM-883
Getting Started
-EN
4
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
On a wall
or
Rear of TV
Rear of TV
Connecting an indoor antenna
Note
· You are advised to use an outdoor antenna for better reception.
2
1
3
MONITOR
OUT
AUDIO
VIDEO
VIDEO
IN
Getting Started
-EN
6
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
to antenna
output
VIDEO IN
to antenna socket
VCR
to video
and audio
outputs
VIDEO
AUDIO
VIDEO
IN
MONITOR
OUT
: Signal flow
Rear of TV
Front of TV
VIDEO
VIDEO INPUT
AUDIO
Camcorder
to video and
audio outputs
: Signal flow
When connecting a monaural VCR
Connect the yellow plug to VIDEO and the black plug to AUDIO-L (MONO).
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.