China TV 21TS1020 Schematic

SERVICE MANUAL

MODEL: 21TS1020

CHASSIS: 3P66SN

EN 1

3P66

Technical Specifications, Connections, and Chassis Overview

1. Technical Specifications, Connections,and Chassis Overview

Index of this chapter

Technical Specifications Connection Overview Chassis Overview

Note:

Data below can deviate slightly from the actual situation, due to the different set executions.

1.1.Technical Specifications

Chassis

CRT Size

Main IC.

Main PCB Size

Color Standard

Sound Receiver

System

Picture

Nicam/A2 (with AV

MTS ( with AV

AV STEREO

SOUND

MONO

System (AV)

Power Source

Power Standby

Maximum Power

PRESET CHANNEL

TUNER TYPE

Antenna InpuT

COM.FILTER

Double Window

Progressive Scan

Freeze

zoom

SVM

Screen saver

Blue Back

Noise Reduction

Pictures effect:

Color Temperature

Black Extend

Tone Control

surround

Tone Control

surround

Tone Control

surround

(mm)

STEREO)

STEREO )

3P66A

14"~21" 14"~21" 14"~21"

14/21RF:TDA11105 21Slim:TDA11135

304X246 304X246 304X246 304X246

PAL PAL/SECAM PAL/SECAM NTSC-M/PAL-M/N

BG/DK/I BG/DK/I BG/DK/I M,N

PAL/NTSC PAL/SECAM/NTSC PAL/SECAM/NTSC PAL/NTSC

AC100-240V 50/60Hz AC100-240V 50/60Hz AC100-240V 50/60Hz AC100-240V 50/60Hz

<3W < 3W < 3W ＜3W

14"60W;21" REAL FLAT CRT 80W;21"SLIM CRT 100W

200 200 200 181CH

FS FS FS FS

75 Ohm(Unbalance) 75 Ohm(Unbalance) 75 Ohm(Unbalance)

NO NO NO NO

YES YES YES YES

NO NO NO No

Standard,soft,rich,user Standard,soft,rich,user Standard,soft,rich,user

NO NO NO NO

YES YES YES YES

NO NO NO NO

NO NO NO OPTION

NO NO NO NO

YES YES YES YES

NO NO NO NO

3P66E(RCAMODE)

14/21RF:TDA11106 21Slim:TDA11136

FLAT CRT 80W;21"SLIM CRT 100W

3P66E(SCART MODE)

14/21RF:TDA11106 21Slim:TDA11136

FLAT CRT 80W;21"SLIM CRT 100W

3P66S

14''-21''

TDA11145

14"70W;21" REAL FLAT CRT 90W;21"SLIM CRT 115W

75 Ohm(Unbalance)

Standard,Soft,Rich, User

Audio Output Power （）MAX（）

2W+2W 2W+2W 2W+2W 5W+5W

Technical Specifications, Connections, and Chassis Overview

3P66 1.

EN 2

Features

Subwoofer Out

Mute

sounds effect

No signal auto standby

Timer Off/On

Sleep Timer

Rename channel

Favorite channel

Biological Clock

Calendar

Program prearrange

Child Lock

Quick view

Hotel mode

Clock

Game

CCD

V-Chip

High gain tuner

Customer Band Name (OSD)

Mode

Teletext

Pages

X26 Packet

OSD Language

NO NO NO NO

YES YES YES YES

No NO NO NO

15 MIN 15 MIN 15 MIN 15Min

YES YES YES YES

NO NO NO NO

YES YES YES YES

NO NO NO NO

YES YES YES YES

NO NO NO NO

NO NO NO YES

NO NO NO NO

ENGLISH , RANCAIS,Portuguese,T URKEY,ARABIC,FARSI, RUSSIA,SPAIN,THAI,VI ETNAM

ENGLISH, FRANCAIS,Portuguese, TURKEY,ARABIC,FAR SI,RUSSIA,SPAIN,THAI ,VIETNAM

English,French,Portuguese,Spanis h

Terminal

Certification

Other

RCA Jack

SCART

AV In-Front

AV Input-Rear

AV Output

earPhone

YUV

S-Video In

CE/EMC

Handset

Option feature cost

Applicable Cabinet

YES YES NO YES

NO NO YES NO

111

YES YES YES

NO NO NO NO

YES YES NO YES

NO NO NO NO

YES YES YES YES

YES(OPTION) YES(OPTION) YES(OPTION) NO

RC13 RC13 RC13 RC13

YES

14NK,14NX,14NZ,14NI,14NS,14N03,14N01,14N02,14N07,21NX,21NZ,21T05,21N0

5,21NK,21NI,21TN,21TI,21T15,21N15,21NS,21N03,21T03,21N01,21T01,21N02,21

N07,21T07,21N0C,21TOC,21T91,21N91,21N10,21T10,21D93,21T11,21U10,21D11,

21D88,21U11,21U16,21N12,21T12,21U12

EN 3

3P66

1.2. Connections

Connecting the Aerial(or Cable Television

Cable Television Network

Front(or side)Audio/Video Input(option)

SOCKETS

Technical Specifications, Connections, and Chassis Overview

Network)

To view television channels correctly ,a signal must be received by the set from one of the following sources:

*An outdoor aerial *A cable television network

75 ANT

Plug the aerial or cable network input cable to the 75 coaxial socket on the rear of the television.

VIDEO

LEFT

RIGHT

VIDEO

LEFT

RIGHT

LEFT

VIDEO

AV2 IN

VCR

Decoder/

video game device

Video disc player

Camcorder

Satellite receiver

Technical Specifications, Connections, and Chassis Overview

3P66

EN 4

STEREO A

V&YUV

AV1 IN

VIDEO

LEFT

AV OUT

VIDEO

LEFT

RIGHT

AV1 IN

VIDEO

LEFT

RIGHT

YCbCr IN

75 ANT

Cable Television Network

VCR

Decoder/

video game device

RIGHT

YCbCr IN

AV OUT

VIDEO

LEFT

RIGHT

AV1 IN

VIDEO

LEFT

RIGHT

Video disc player

Camcorder

Satellite receiver

Amplifier

VCR

EN 5

3P66

Technical Specifications, Connections, and Chassis Overview

PERIPHERAL EQUIPMENT CONNECTIONS

There is a wide range of audio and video equipment that can be connected to your TV. Connection diagrams at the end of this section show

Aerial socket

1. Connect the RF out socket of the VCR to the aerial socket on the back of the set.

2. Connect the aerial cable to the RF aerial in socket of the VCR.

3. Select the program number where the VCR channel is stored.

4. Press the PLAY button on the VCR.

Audio/ Video in

1. Connect the audio/video out sockets of the VCR to audio/video in sockets of the set.

2. Press the AV/TV button to select AV.

3. Press the PLAY button on the VCR. The VCR playback picture appears on the screen.

Precautions when connecting to other equipments

When using external equipment with this TV, please read the Switch off all power supplies to the equipment and TV before connection. Always ensure that the input

sockets

and output terminals are correctly connected..

you where the different equipment

instruction manual of

the

should be connected at the backside of the TV.

external equipment.

Technical Specifications, Connections, and Chassis Overview

1.3. ChassisOverview

CRT PANEL

3P66

EN 6

MAIN

CHASSIS

PANEL

POWER SUPPLY

LINE DEFLECTION

FRAME DEFLECTION

TUNER IF

AV I/O

AUDIO / VIDEO

VIDEO IF SOUND IF

CPU CONTROL

AUDIO AMPLIFIER

EN 7

3P66

Safety Instructions

2.Safety Instructions

1. Power-supply cords should be routed so that they are not likely to be walked on or nagged by items placed upon or against them. Pay particular attention to cords at doors, plugs, receptacles, and the point where they exit from the product. When the power cord or plug is damaged or frayed, unplug the TV from the wall outlet and refer servicing to your authorized dealer.

2. Do not overload wall outlets, extension cords, or convenience receptacles on other equipment as this can result

in a risk of fire or electric shock.

3. Unplug the TV product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a

damp cloth for cleaning.

4. If the TV should be dropped and/ or broken, it could result in an injury, and continued use could result in fire or

electrical shock. Immediately turn off the power switch, disconnect the power plug from the power outlet and contact your authorized dealer.

5. Do not insert liquids or foreign object. Penetration of liquids or foreign objects could result in fire or electrical

shock.

6. Do not attempt to service the TV yourself. Opening or removing covers can expose you to high voltage and other

dangerous conditions. Refer all servicing to your authorized dealer.

7. Do not place the TV on an unstable shelf, slant or vibrant surface. The TV may fall, causing serious injury to

human and serious damage to the appliance.

8. Avoid dusty places, since accumulated dust inside the chassis may cause failure of the TV when in high humidity

environment.

9. Do not place the TV near water. For example, a bathroom, a beach, etc.

10. Do not obstruct the ventilation openings of the equipment with items such as newspapers, tablecloth, etc.

11. Do not place the TV on a carpet, sofa or bedding.

12. Keep the TV away from heat sources such as radiators, heaters, stoves and other heat generating products.

13. Do not place the TV in a "built-in" enclosure, unless proper ventilation is provided.

14. Do not place flower vases, pots, cups, cosmetics, liquids such as water, etc on or around the TV.

15. Choose a place where light (artificial or sunlight) does not shine directly on the screen.

16. If the TV does not work properly and you are unable to restore normal operation by following the "troubleshooting"

section in your instruction manual, do not attempt any further adjustment. Unplug the TV and consult your authorized dealer.

17. Do not touch the controls other than those described in the operating instructions as improper adjustment of

other controls may result in damaging. Please ask your service authorized dealer to restore the TV to normal operation.

18. For added protection for this TV during a lightning storm, unplug it from the wall outlet and disconnect the

antenna or cable system.

19. If a strange sound or smell gives off from the TV, please turn off and unplug it from the wall outlet, then refer to

authorized dealer.

20. To prevent fire, never place any type of candle or naked flames on the top or near the TV.

21. Avoid any kind of impact to the TV. Be special careful not to damage the screen face.

22. If the TV is to remain unused for a period of time. Turn off and unplug it from the wall outlet.

MechanicalInstructions

3P66

EN 8

EN 9

3P66

Service Modes

4. 3P66SN Service Modes

4.1. Enter and exit service mode4.1. Enter and exit service mode

a. Enter "factory service mode" Press "MENU","Q.VIEW" and "PP" in turn.： b. Enter "design service mode" : After entering "factory service mode",select"SC"item,then press "8","9"keys.

(Normally "design service mode"is not needed for production line.)

c. Exit service mode: Press"DISPLAY"key to exit service mode.

Adjustment: In service mode,pressing digital keys directly can enter the corresponding page,pressing "MENU"key can enter

the next page,pressing "SCAN"key can enter prevenient page.

Pressing "UP"and"DOWN"keys can select the items to adjust, pressing"LEFT" and

values.

4.2. BUS OPEN mode4.2. BUS OPEN mode

In service mode, pressing"MUTE"key can enter "BUS OPEN"mode, which is useful for white balance adjustment

using AUTO WHITE BALANCE EQUIPMENT or mass data written into EEPROM. IC. Pressing"MUTE"key again can exit "BUS OPEN" mode.

4.3. VG2 adjust mode4.3. VG2 adjust mode

Two methods to adjust VG2 voltage:

(1) OSD mode: This mode is for sets with AKB function(page10 "VG2-MODE"is set to 1 and hardwire is with CCC loop ), adjust

the VG2 potmeter on the FBT till "OK" is displayed.

(2) Horizontal line mode: This mode is for sets without AKB function(page 10"VG2-MODE" is set to 0 and hardwire is without CCC loop), adjust the VG2 potmeter on the FBT untill the faint horizontal line appears in dark room(usually only one colour: Red ,green or blue.

*Note:VG2 voltage is also controled by"VG2-BRI"on page (5).

*Note:

"RIGHT"keys can adjust the

4.4. FACTORY mode4.4. FACTORY mode

In service mode, pressing"PP"key can erter "FACTORY MODE", which is useful for aging in production lines. Pressing "PP"key again can exit "FACTORY MODE".

4.5. RF AGC adjustment4.5. RF AGC adjustment

a. Receive 571.25MHz , 60dB color bar signal. b. Enter factory mode and press digital key "03". c. Measure tuner AGC point voltage, and adjust AGC item till the voltage is (or till picture noise just2.7V 0.1V

disappears) Usually the AGC value is fixed to 20.。

4.6. FOCUS adjudtment4.6. FOCUS adjudtment

a. Receive cross-hatch pattern signal. b. Set picture to"RICH" mode. c. Adjust FBT's FOCUS knob till picture is clear.

4.7. SCREEN VOLTAGE adjustment4.7. SCREEN VOLTAGE adjustment

a. The TV set will be set up in the "AV" "STANDARD" mode, no signal input. b. Enter into adjust factory mode, and press "03" keys to choose "Vg2" item, it will be permitted to enter light Line mode.

c. In light-Line mode, Rotating screens potential for grid-line level so you can adjust. Press "CH+."or "CH-." Key ,

the by-line can be returned to the state in full screen mode, and then exit it.

4.8. Aging of machine mode4.8. Aging of machine mode

a. When enter into factory mode state, pressing P.P. key will be permitted to enter Aging of machine mode. b.Press "8"key and "9"key one by one button exit aging mode .

4.9. BTSC alignment method(3P66SN)4.9. BTSC alignment method(3P66SN)

a. FLUKE 54200 trasmitting colour bar Signal frequency at 61.25MHZ Signal strength at 80dB Test 3 under，，， BTSC settings sound frequency at 300HZ Input signal to 3P66SN Latam RF, turn on TV.（）。

+ 22 hidden pages

China TV 21TS1020 Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual