China TV 14TS1010 Schematic

SERVICE MANUAL

MODEL: 14TS1020

CHASSIS: 3P68S

EN 1

3P68S

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 differentsetexecutions.

1.1.Technical Specifications

TV PRODUCT FEATURE LIST

System

Picture

SOUND

AV STEREO

Chassis

CRT Size Main IC.

Main PCB Size

Color Standard

Sound Receiver

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

Nicam/A2 (with AV STEREO)

Tone control

Surround

MTS (with AV STEREO )

Tone control

Surround

Tone control

Surround

3P68S(14" CRT

TV)

14" Ultra Slim

TDA11145

197*250

NTSC-M/PAL-

M/N M,N

PAL/NTSC

AC100-240V

50/60Hz

＜1W

< 60W

181CH

75 Ohm

(Unbalance)

NO NO NO NO NO NO NO

YES

Standard, Soft,

Rich, User

YES

NO NO NO NO NO NO NO NO NO

ical Specifications, Connections, and Chassis Overview

Techn

3P68S

EN 2

Features

MONO

Audio Output Power (MAX)

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

2W*1

YES

15 Mins

YES YES

NO NO NO NO

NO YES YES

NO YES

NO YES YES

Terminals

Certification

Other

OSD Language

RCA Jack

SCART

Jack in Side/Front

Jack in Rear

CE/EMC Handset

AV In- (RCA)

AV Output

Earphone Out

YUV

S-Video In

SCART

AV In-(RCA)

AV Output

Earphone Out

YUV

S-Video In UL CB

English, French,

Portuguese,

Spanish

YES

NO NO NO NO NO NO NO

1 NO NO NO NO NO

YES

RC13

EN 3

3P68S

1.2. Connections

Connecting the Aerial(or Cable Television

Cable Television Network

Audio /Vid eo In put

Technic

VIDEO

al 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.

VCR

Decoder/

VIDEO

video game device

VIDE O

AUDI O

AUDIO

Video disc player

Camcorder

Satellite receiver

Technic

al Specifications, Connections, and Chassis Overview

PERIPHERAL EQUIPMENT CONNECTIONS

3P68S

EN 4

There is a wide range of audio and video equipment that can be connected to your TV. Connection d

erial s

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

2. C

onnect the aerial cable to the RF aerial in socket of the VCR. elect the program number where the VCR channel is stored.

3. S ress the PLAY button on the VCR.

4. P

Audio/ V

1. Connect the audio/video out sockets of the VCR to audio/video in sockets of the set. ress the AV/TV button to select AV.

2. P ress the PLAY button on the VCR.

3. P

The V

Precautions w

When u

Switch o

Always e

iagrams at the end of this section show

ocket

ideo in

sockets

CR playback picture appears on the screen.

hen connecting to other equipments

sing external equipment with this TV, please read the

ff all power supplies to the equipment and TV before connection.

nsure that the input

utput terminals are correctly connected..

and o

you w

here the different equipment

instruction m

anual of

the

should be c

xternal e

onnected at the backside of the TV.

quipment.

3P68S

EN 51.

Technical Specifications, Connections, and Chassis Overview

1.3. ChassisOverview

CRT PANEL

MAIN

CHASSIS

PANEL

POWER SUPPLY

LINE DEFLECTION

FRAME DEFLECTION

TUNER IF

AV IN

/ VIDEO

AUDIO

CPU CONTROL

AUDIO AMPLIFIER

Safety Instructions

3P68S

EN6 2.

2.Safety Instructions

1. Power-suppl y cord s should be routed so that they ar e not likely t o be walked on or na gged by items placed upon or a from t servicing to y

2. Do n

a risk of fire o r electric sh ock.

3. U

damp c

4. If t electrical s your a

5. Do n shock.

6. Do n dangerous c

7. Do n human a

8. A environment.

9. Do n

10. Do n

11. Do n

12. K

13. Do n

14. Do n

15. C

16. If t

section in y dealer.

other c

18. F antenna or c

19. If

authorized d

20. To p

21. A

22. If t

gainst them. Pay particular atten tion to cords at doo rs, pl ugs, receptacles, and the point where they exi t

he product. Wh en the power cord or plug is damaged or frayed, unplug the TV f rom the wall outlet a nd ref er

our authorized deale r.

ot overload wa ll outlets, extensi on cords, or c onveni ence receptacles on other equipment as t his can resul t

nplug the TV product from th e wall outlet before cleaning. Do n ot use liquid cleaners or aerosol cleaners. Use a

loth for clean ing.

he TV sh ould be dropp ed and/ or broken, it could resul t in an injur y, and continued use could result in fire or

hock. Immediately tu rn off the pow er switch, di sconne ct the power plug fr om the power outlet a nd contact

uthorized deal er.

ot insert liqu ids or foreign objec t. Penetration of liquids or fore ign objects could result in fire or elec trical

ot attempt to s ervice the TV yourself. Opening o r remo ving covers can expose you to hig h voltage and other

onditions. Ref er all servicing to your authori zed dealer.

ot place the TV on an unstable shel f, slant or vibrant surface. The T V may f all, causing serious injur y to

nd serious dam age to the app liance .

void dusty pla ces, since ac cumula ted dust insi de the chassis may cause fa ilure o f the TV when in hig h humidity

ot place the TV near w ater. F or example, a bathro om, a beach, e tc.

ot obstruct th e ventilation openi ngs of the equ ipment with items such as n ewspap ers, tablecloth, et c. ot place the TV on a carpet, sofa or bedd ing.

eep the TV away from heat sources such as radiators, he aters, stoves and other heat gen eratin g products.

ot place the TV in a "built- in" enclosure, unle ss proper ven tilati on is provide d. ot place flowe r vases, pots , cups, cosme tics, l iquids such as water, etc o n or around the TV.

hoose a p lace where light (a rtific ial or sunlight) doe s not shine directly on the scree n.

he TV do es not work pr operly and yo u are unable t o restore nor mal operation by fo llowin g the "troubl eshoot ing"

our instruction manu al, do not att empt any furt her adjustment. Unp lug the TV and consult you r authorized

7. Do n

ot touch the controls other than those described in the oper ating i nstruc tions a s improper ad justme nt of ontrols may result in damaging. Pl ease ask your service auth orized dealer to restore the TV t o normal oper ation. or added prote ction for thi s TV du ring a lightning sto rm, unplug it from the wal l outlet and d isconn ect the

able system.

a strang e sound or smell giv es off from th e TV, p lease t urn off and unplug it from the wal l outlet, then refe r to

ealer.

revent fire, never place an y type of cand le or naked flames on the top or n ear the TV.

void any kind o f impact to the TV. B e spec ial careful not to damage t he screen fac e.

he TV is to rem ain unused fo r a period of time. Turn of f and unplug i t from the wal l outlet.

3P68S

EN73.

MechanicalInstructions

Service Modes

3P68S 4.

4. 3P68S 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"RIGHT"keys can adjust the 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:

EN8

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.（）。

3P68S

b. After TV operate normally, use 3P66SN Latam RC to perform Auto-search or select CH03. c. E

nter factory mode (exact de tails r efer to 3P66SN alignement instruction), use Multimeter

measure at J

d. E

nter factory mode page 7 in the selection of BTSC-L1, use mult imeter FLUKE 87 Ⅲ to measure R860( CHL),

862(CHR) ( eff ective L, R audio ou tput from TDA9580 BTSC demodulation), Adjust BTSC-L1 to achieve

and R CHR, C e. F under B

f. U page 7, S interdependent w and 3

g. “Reduce t BTSC-Stereo, S

pressing “SAP” k BTSC-SP w values f

HL at 0.5 0.02 Vrms.

LUKE 54200 tra nsmitt ing colour ba r Signal f requen cy at 61.25MH Z Signal s trengt h at 80dB, Item Test1，，

TSC, BTSC-MOD to set S tereo.

se Dual Trace Oscillo scope, CH1 measures R860 (CHL), CH2 meas ures R862(CHR).Enter Fact ory mode

kHz. (Suggest default value of 4)

or BTSC-ST and BTSC-SP.”

852 to achieve a read ing of 0.25 0 .02 Vrms.

elect Stereo in BTSC-MODE, adjust BTSC-A1 and BTSC-A2, to achieve the clearest, cleanest, least

aveforms of 30 0Hz and 3kHz. Also adjust B TSC-TC , to achieve the bes t waveform of 300Hz

he signal stre ngth of FLUKE 54200 to 30dB, transmitting colour bar , Signal freq uency a t 61.25MHZ，

AP-MOD, audio frequency at L=300Hz, R=3k HZ. Adjust va lues of BTSC-ST and BTSC-SP while

ey on th e RC, until no detection of Stereo and SAP, th en Adjust val ues of BTSC-ST and

hile pressing “SAP” key on the RC, unt il proper det ection of Ste reo and SAP. Final confirmation of

EN9

Service Modes

4.10. Factories parameters of the adjustment4.10. Factories parameters of the adjustment

Debugging items and directive fro m the page " 0" to page" 15" consists of 16 ite ms, and a "predetermined adjustment p

age" Below s are testing the it ems specified，：

UKE 87 Ⅲ to

(0) Page 0

Service setting OSD display Description Value DefaultService setting OSD display Description Value Default

Horizontal shift HSH 50Hz Horizontal center 0…63 35

Horizontal shift HSH-60 60Hz Horizontal center 0…63 30

EW Width EWW 50Hz EW Width 0…63 50

EW Width EWW-60 60Hz EW Width 0…63 50

Vertical Slope VSL 50Hz Vertical Slope 0…63 30

Vertical Slope VSL-60 60Hz Vertical Slope 0…63 30

Vertical Shift VSH 50Hz Vertical Shift 0…63 35

Vertical Shift VSH-60 60Hz Vertical Shift 0…63 35

Vertical Amplitude VAM 50Hz Vertical Amplitude 0…63 25

Vertical Amplitude VAM-60 60Hz Vertical Amplitude 0…63 25

S-correction SC 50Hz S-correction 0…63 20

S-correction SC-60 60Hz S-correction 0…63 20

+ 21 hidden pages