Sony TRINITRON KV-J21MF1AK User manual

MODEL COMMANDER DEST. CHASSIS NO.
KV-J21MF1AK RM-883 India SCC-K67K-A
KV-J21MF3 RM-883 India SCC-K76F-A
KV-J21MN1AK RM-883 India SCC-K67L-A
KV-J21PF1 RM-883 India SCC-K67G-A
SERVICE MANUAL
MODEL COMMANDER DEST. CHASSIS NO.
CHASSIS
TRINITRON ® COLOR TV
BG-1S (D)

– 2 –
KV-J21MF1AK/J21MF3
KV-J21MN1AK/J21PF1
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 CRITICALTO SAFE OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART
NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUP-
PLEMENTS 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, I, D/K, M Except for KV-J21PF1
B/G KV-J21PF1
Color system PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58 Except for KV-J21PF1
PAL, PAL 60,NTSC4.43, NTSC3.58 (AV IN) KV-J21PF1
Stereo system NICAM Stereo B/G, I; A2 Stereo (German) B/G KV-J21MN1AK only
Channel coverage
B/G VHF: E2 to E12/UHF: E21 to E69/CATV: S01 to S03, S1 to S41
IUHF: B21 to B68/CATV: S01 to S03, S1 to S41 Except for KV-J21PF1
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 Except for KV-J21PF1
MVHF: A2 to A13/UHF:A14 to A79/
CATV: A-8 to A-2, A to W+ 4, W+ 6 to W+ 84 Except for KV-J21PF1
Audio output (speaker) 3W +3W KV-J21MF3/J21PF1
3W +3W +7W (3D WOOFER) KV-J21MF1AK/J21MN1AK
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) 610 ×470 ×488 KV-J21MF3/J21PF1
610 ×510 ×488 KV-J21MF1AK/J21MN1AK
Mass (kg) 23 KV-J21MF3/J21PF1
25 KV-J21MF1AK/J21MN1AK
Design and specifications are subject to change without notice.

– 3 –
KV-J21MF1AK/J21MF3
KV-J21MN1AK/J21PF1
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 ........................................... 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 Adjustments..... 17
4. SELF DIAGNOSIS FUNCTION............................ 18
5. CIRCUIT ADJUSTMENTS
5-1. Adjustments with Commander ............................ 19
5-2. Adjustment Method ............................................. 20
5-3. A Board Adjustment after IC003 (Memory)
Replacement......................................................... 25
5-4. Picture Distortion Adjustment ............................. 25
6. DIAGRAMS
6-1. Block Diagram ...................................................... 27
6-2. Circuit Boards Location ....................................... 31
6-3. Schematic Diagrams and Printed Wiring Boards. 31
(1) Schematic Diagrams of A3, C and K1 Boards..... 35
(2) Schematic Diagram of A Board............................ 43
(3) Schematic Diagrams of A11, A12, K and
VM Boards............................................................ 48
6-4. Semiconductors..................................................... 57
7. EXPLODED VIEW
7-1. Chassis .................................................................. 59
7-2. 3D Speaker (KV-J21MF1AK/J21MN1AK only) 61
8. ELECTRICAL PARTS LIST.................................... 62
Section Title Page Section Title Page

– 4 –
KV-J21MF1AK/J21MF3 KV-J21MN1AK/J21PF1
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 this manual.
2
3
pKV-J21MF1AK/J21MN1AK
B/G I D/K M
TV SYSTEM AUTO PROGR
TV SYSTEM
AUTO PROGR
pKV-J21MF1AK/J21MN1AK/
J21MF3
2
1

– 5 –
KV-J21MF1AK/J21MF3 KV-J21MN1AK/J21PF1
RM-883
Getting Started
5
Connecting audio/video equipment using MONITOR OUT jacks
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
or
MONITOR OUT
Rear of TV
When recording through the MONITOR OUT jacks
If you change the channel or video input while recording with a VCR, the channel or video input you are recording also will be changed.
to antenna socket
Audio system
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
Rear of TV
Front of TV
VIDEO L(MONO)
VIDEO INPUT
AUDIO
R
VIDEO
IN
MONITOR
OUT
VIDEO
L
(MONO)
AUDIO
R
to video
and audio
outputs
: Signal flow
: Signal flow
to video and
audio outputs
Camcorder
to antenna
output VCR
to antenna socket
VIDEO
IN
MONITOR
OUT
VIDEO
L
(MONO)
AUDIO
R
: Signal flow
to video
and audio
inputs
VCR
Getting Started
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
Connecting the 3D WOOFER
pKV-J21MF1AK/J21MN1AK only
1 Attach the 3D WOOFER into the foothold on the top of the TV.
2 Connect the wires to the 3D WOOFER (8Ω) terminals at the rear of the TV.
The red wire should be connected to the ‘red terminal and the black wire to the ’black terminal.
Notes
• Connect only the supplied 3D WOOFER; otherwise the TV may malfunction.
• Unplug the TV from the wall outlet when connecting the 3D WOOFER.
• To prevent a malfunction caused by a short circuit of the terminals, make sure that none of the 3D WOOFER wire strands stick out,
making contact with the neighbouring speaker terminal.
12
3D WOOFER
Black wire
Red wire
On a wall
or
Rear of TV Rear of TV