MODEL
COMMANDER DEST. CHASSIS NO.
KV-2168KF7
RM-883
Vietnam SCC-K26S-A
SERVICE MANUAL
MODEL
COMMANDER DEST. CHASSIS NO.
TRINITRON ® COLOR TV
BG-1S (D)
<REFINE>
CHASSIS
2
KV-2168KF7
RM-883
Note
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.
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
Channel coverage
B/G
VHF: E2 to E12/UHF: E21 to E69/CATV: S01 to S03, S1 to S41
D/K
VHF: C1 to C12, R1 to R12/UHF: C13 to C57, R21 to R60/
CATV: S01 to S03, S1 to S41, Z1 to Z39
Audio output (speaker)
3W + 3W
Inputs
Antenna: 75 ohms
VIDEO IN jacks: phono jacks
Video: 1 Vp-p, 75 ohms
Audio: 500 mVrms, high impedance
Outputs
Headphone 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) 600
× 459 × 474
Mass (kg)
24
Design and specifications are subject to change without notice.
3
KV-2168KF7
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 Control Button.............................. 11
2-5.
Demagnetization Coil and Picture Tube Removal . 12
3. SET-UP ADJUSTMENTS
3-1.
Beam Landing ......................................................... 13
3-2.
Convergence ............................................................ 14
3-3.
Focus Adjustment ................................................... 16
3-4.
G2 (Screen) and White Balance Adjustments ........ 16
4. SELF DIAGNOSIS FUNCTION ......................... 17
5. CIRCUIT ADJUSTMENTS
5-1.
Adjustments with Commander ............................... 18
5-2.
Adjustment Method ................................................ 19
5-3.
A Board Adjustment after IC003 (Memory)
Replacement............................................................ 22
5-4.
Picture Distortion Adjustment ................................ 22
Section
Title
Page
Section
Title
Page
6. DIAGRAMS
6-1.
Block Diagram ........................................................ 23
6-2.
Circuit Boards Location ......................................... 26
6-3.
Schematic Diagrams and Printed Wiring Boards ... 26
(1)
Schematic Diagrams of A and A4 Boards .............. 31
(2)
Schematic Diagrams of A11, A12 and C Boards ... 35
6-4.
Semiconductors ....................................................... 41
7. EXPLODED VIEW
7-1.
Chassis .................................................................... 43
8. ELECTRICAL PARTS LIST ............................... 45
4
KV
-2168KF7
RM-883
SECTION 1
GENERAL
The operating instructions mentioned here are partial abstracts from the
Operating Instructions Manual. The page numbers of the Oper ating
Instruction Manual remain as in the manual.
2
MONITOR
OUT
AUDIO
VIDEO
VIDEO
IN
3
2
1
3
2
1
TV SYSTEM
AUTO PROGR
B/G
I
D/K
M
TV SYSTEM
AUTO PROGR
B/G
D/K
TV SYSTEM
5
KV
-2168KF7
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
5-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
VIDEO IN
VIDEO
AUDIO
R
L (MONO)
VIDEO
IN
MONITOR
OUT
to antenna socket
to antenna
output
VCR
to video
and audio
outputs
: Signal flow
Rear of TV
When connecting a monaural VCR
Connect the yellow plug to VIDEO and the black plug to AUDIO-L (MONO).
: Signal flow
Front of TV
Camcorder
to video and
audio outputs
VIDEO
L(MONO)
VIDEO INPUT
AUDIO
R
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.