China TV 21TS1020 Schematic

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Page 1

SERVICE MANUAL

MODEL: 21TS1020

CHASSIS: 3P66SN

Page 2

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

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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

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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

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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

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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.

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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

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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.

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MechanicalInstructions

3P66

EN 8

Page 10

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.（）。

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Service Modes

b. After TV operate normally, use 3P66SN Latam RC to perform Auto-search or select CH03. c. Enter factory mode (exact details refer to 3P66SN alignement instruction), use Multimeter

measure at J852 to achieve a reading of 0.25 0 .02 Vrms.

d. Enter factory mode page 7 in the selection of BTSC-L1, use multimeter FLUKE 87 Ⅲ to measure R860(CHL),

and R862(CHR) ( effective L, R audio output from TDA9580 BTSC demodulation), Adjust BTSC-L1 to achieve

CHR, CHL at 0.5 0.02 Vrms.

e. FLUKE 54200 transmitting colour bar Signal frequency at 61.25MHZ Signal strength at 80dB, Item Test1，， under BTSC, BTSC-MOD to set Stereo.

f. Use Dual Trace Oscilloscope, CH1 measures R860 (CHL), CH2 measures R862(CHR).Enter Factory mode page 7, Select Stereo in BTSC-MODE, adjust BTSC-A1 and BTSC-A2, to achieve the clearest, cleanest, least interdependent waveforms of 300Hz and 3kHz. Also adjust BTSC-TC, to achieve the best waveform of 300Hz and 3kHz. (Suggest default value of 4)

g. “Reduce the signal strength of FLUKE 54200 to 30dB, transmitting colour bar, Signal frequency at 61.25MHZ， BTSC-Stereo, SAP-MOD, audio frequency at L=300Hz, R=3kHZ. Adjust values of BTSC-ST and BTSC-SP while

pressing “SAP” key on the RC, until no detection of Stereo and SAP, then Adjust values of BTSC-ST and

BTSC-SP while pressing “SAP” key on the RC, until proper detection of Stereo and SAP. Final confirmation of values for BTSC-ST and BTSC-SP.”

3P66

FLUKE87Ⅲto

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

Debugging items and directive from the page " 0" to page" 15" consists of 16 items, and a "predetermined adjustment page" Belows are testing the items specified，：

EN 10

(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

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EN 11

(1) Page 1

3P66

Service Modes

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

EW parabola/width PW 50Hz EW parabola/width 0…63 40

EW parabola/width PW-60 60Hz EW parabola/width 0…63 40

EW trapezium TC 50Hz EW trapezium 0…63 25

EW trapezium TC-60 60Hz EW trapezium 0…63 25

Upper corner parabola UCP 50Hz Upper corner parabola 0…63 40

Upper corner parabola UCP-60 60Hz Upper corner parabola 0…63 40

Lower corner parabola LCP 50Hz Lower corner parabola 0…63 42

Lower corner parabola LCP-60 60Hz Lower corner parabola 0…63 42

Horizontal

parallelogram

HPAR 50Hz

Horizontal

HPAR-60 60Hz Horizontal

parallelogram

0…63 28

Horizontal bow HBOW 50Hz Horizontal bow 0…63 35

Horizontal bow HBOW-60 60Hz Horizontal bow 0…63 35

(2) Page 2

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

Black level offset C BLC

Common

course

black

Black level offset R BLR Fine black level offset R 0…63 33

level

offset

0…63 7

Black level offset G BLG Fine black level offset G 0…63 35

Black level offset B BLB Fine black level offset B 0…63 36

White point R WPR White point R 0…63 42

White point G WPG White point G 0…63 31

White point B WPB White point B 0…63 48

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(3) Page 3

Service Modes

3P66

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

AGC Take over AGC AGC Take-over 0…63 20

VG2 VG2 Adjustment Vg2 voltage 0…63 25

(4) Page 4

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

Speech treble S-TR Speech treble 0…63 24

Speech bass S-BA Speech bass 0…63 42

Music treble M-TR Music treble 0…63 42

EN 12

Musia bass M-BA Music bass 0…63 48

Theatre treble T-TR Theatre treble 0…63 32

Theatre bass T-BA Theatre bass 0…63 48

AV curve offset AV-OF AV curve offset compare TV -31…+32 -3

Volume curve V-05 0-5 Volume curve 0…81 40

Volume curve V-10 5-10 Volume curve 0…81 55

Volume curve V-20 10-20Volume curve 0…81 63

Volume curve V-30 20-30Volume curve 0…81 67

Volume curve V-40 30-40Volume curve 0…81 69

Volume curve V-50 40-50Volume curve 0…81 70

Volume curve V-63 50-63Volume curve 0…81 80

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EN 13

(5) Page 5

3P66

Service Modes

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

Soft brightness S-BRI Soft brightness 0…63 35

Soft color S-COL Soft color 0…63 25

Soft contrast S-CON Soft contrast 0…63 30

Soft sharpness S-SHA Soft sharpness 0…63 35

Nature brightness N-BRI Nature brightness 0…63 35

Nature color N-COL Nature color 0…63 25

Nature contrast N-CON Nature contrast 0…63 40

Nature sharpness N-SHA Nature sharpness 0…63 60

Rich brightness R-BRI Rich brightness 0…63 40

Rich color R-COL Rich color 0…63 30

Rich contrast R-CON Rich contrast 0…63 60

Rich sharpness R-SHA Rich sharpness 0…63 63

(6) Page 6

Service setting OSDService setting OSD

Description Value Default

display

IFA IFB IFC IF PLL demodulator

frequency setting

0: 58.75MHz 1: 45.75MHz 2: 38.90MHz

3: 38.00MHz 4: 33.40MHz

5: 33.90MHz

AGC Speed A SPD AGC Speed 0..3 1

Noise reduce NR Noise reduce(effect

when reopen TV)

0: OFF

1: ON

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Service Modes

3P66

EN 14

BKS&BSD Register BKS BKS&BSD Register

BKS(Black stretch

switch):

setting

0:off 1:on

BSD(Black stretch depth):

0: 15 IRE 1: 30 IRE

BKS=1(default)

0: BSD=0 1: BSD=1

Blue screen B B Blue screen(effect

when reopen TV)

0: No blue screen

1: blue screen

Video mute V-M Video mute 0: No black screen when

switch off

1: black screen when

switch off

3P66 selection

or 5P66

3 or 5 3P66 or 5P66

selection(AV

switch )

0: 3P66

1: 5P66

AV POC Setting A-POC AV POC Setting 0: POC=0

1: POC depend on IFI

TV POC Setting T-POC TV POC Setting 0: POC depend on LOCK

or SL

1: POC depend on LOCK

or IFI

2: POC depend on LOCK

or SL or IFI

Blue screen condition BLUE Blue

condition

screen

0: depend on program

1: AV depend on IFI TV depend on IFI or SL

Switch off condition OFF Switch off condition 0: depend on program

1: AV depend on IFI

TV depend on IFI and

VG2 MODE VG2-Mode VG2 MODE 0: light –Line mode

1: character mode

VSD-Bri VSD-Bri 0…63 25

CC Delay DELAY CC Delay 0…127 2

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EN 15

(7) Page 7

3P66

Service Modes

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

BTSC-MODE MODE BTSC

mode force

0…2

selection

BTSC-ST ST Stereo noise limit 0…15 5

BTSC-SP SP SAP noise limit 0…15 4

BTSC-LI LI Sound input level 0…15 9

BTSC-A1 A1 Separate 0…31 15

BTSC-A2 A2 Separate 0…31 20

BTSC-TC TC Time constant 0…7 4

BTSC-STS STS Stereo level switch 0/1 0

BTSC-DETECT DETECT BTSC detect time 0…255 50

ST-TIMER ST-TIMER Stereo detect count 0…255 0

MONO-TIMER M-TIMER Mono detect count 0…255 0

(8) Page 8

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

Bass and Treble BAS-TRE Bass and Treble

display in sound

Balance BLANCE Balance display in

sound menu

Disco Gain DISG Gain

selection

DISCO

COFF COF Coring of SVM

specification

0: no display

1: display

0: no display 1: display

normal

gain

1: gain 6dB

:coring

according to

specification

1: coring off

Cap bank switch for

DCXO

PAL-M Cap bank switch for DCXO

DCXO NTSC DCXO_CAP

setting

PM-M DCXO PAL-M DCXO_CAP

setting

0…3 2

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Service Modes

3P66

EN 16

PAL-N Cap bank

switch for DCXO

PAL-N DCXO PAL-N DCXO_CAP

setting

0…3 2

1 of volume VOL1 VOL-1 sound curve 0…63 30

AKB AKB Black

current

stabilize

0: active

1: not active

DSA Register DSA Dynamic skin tone

angle

OSD Position O-V50 50Hz OSD vertical

123

degree

117

0…63 35

degree

position

OSD Position O-V60 60Hz OSD vertical

0…63 35

position

OSD Position O-HOR OSD

horizontal

0…63 36

position

Init NVM INIT Initialize 0/1 0

(9) Page 9

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

AV1 AV1 AV1 switch 0: no AV1

1: have AV1

S-VIDEO S-VIDEO S-VIDEO switch 0: no s-video

1: have s-video

YUV YUV YUV switch 0: no YUV

1: have YUV

AV2 AV2 AV2 switch 0: no AV2

1: have AV2

MONO IC MONO TV

MONO

selection

0: stereo

1: mono 2:mono(no MTS)

3:no4052,have MTS(5P66)

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EN 17

3P66

Service Modes

Standly remember R-POWER Power station 0:Direct bootstrap

1: Standby

2: remember Last

state

Logo LOGO Logo switch 0: no LOGO

1: have LOGO

Type of LOGO TYPE Type of LOGO 0:normal LOGO

1:Continental

Electric

8th key of board KEY8 8th key of board

option

0: no 8thmute key

1:have 8

mute

key

Vertical linearity 5VLIN 50Hz

Vertical

0…63 32

linearity

Vertical linearity 6VLIN 60Hz

Vertical

0…63 32

linearity

VCS 5VSCR 50Hz VSCR 0…63 32

VCS 6VCSR 60Hz VSCR 0…63 32

(10) Page10

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

Sub-brightness SUB-BRI Sub-brightness 0…63 4

Max-brightness MAX-BRI Max-brightness 0…63 63

Sub-contrast SUB-CON Sub-contrast 0…63 5

Max-contrast MAX-CON Max-contrast 0…63 63

Max-colour MAX-COL Max-colour 0…63 63

No signal EWW N-EWW No signal EWW -31…+32 0

ESPANA option ESP Espanish option 0: no

1: have

FRANCE option FRA

Franch option 0: no

1: have

PORTUGAL option POR Po

rtuguese option 0: no 1

1: have

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Service Modes

3P66

EN 18

Brightness of black

balance

BT Brightness of black

balance (TV and

YUV)

Contrastness of black balance

Brightness of white

balance

Contrastness of white

Balance

CT Contrastness of black

and

balance(TV

YUV)

WBT Brightness of white

balance(TV

and

YUV)

WCT Contrastness of white

balance(TV

and

YUV)

VX VX-VAM VX or VAM active for

VX 16:9 VX

NORMAL and VX

EXPAND

0…63 10

0…63 25

0…63 23

0: VX

1: VAM

(11) Page 11

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

Peak white PWL Peak

white

Cathode HDOL Cathode voltage 0…15 10

Offset

demodulator

OIF Correction for DC

offset

Mono active MONO-PIN Mono active 0: L&R

FBC&FBC1 register FBC01 FBC: Fixed beam

current

FBC1:

beam current

during switch

limiting

the

IF-PLL

switch off

Fixed

0…15 15

0…63 32

1: Fix R

0:FBC=0

FBC1=0 1:FBC=1

FBC1=0

2:FBC=0 FBC1=1

3:FBC=1

FBC1=1

PAL-M OF YD0-YD3

SETTING

NTSC OF YD0-YD3

SETTING

AV OF YD0-YD3

SETTING

P-YD PAL-M OF Y

0…15 9

DELAY

N-YD NTSC OF Y

0…15 8

DELAY

A-YD AV OF Y DELAY 0…15 10

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EN 19

3P66

Service Modes

DMPH register DMPH DMPH

not

active

1: active

0(MTS)

1(noMTS)

CBAF0&CBAF1 CBAF0-1 Bass

frequency

selection

CTRF0&CTRF1 CRTF0-1 Treble frequency

selection

CB register CB

Chroma

center

bandpass

frequency

MTXF&MUS&MAT MATRIX 0:NTSC-Japanes

eorPALmatrix

1/3/5/7:

PAL

matrix

4:NTSC-Japanese

matrix

6:NTSC-USA

matrix

FMWB register FMWB 0: FMWB=0

1: FMWB=1 2: continue detect

FML mode

mode

detect

FML

minute

0..3 0

0: Fsc

1: 1.1 F sc

0…7 4

0…3 0

HCO register HCO EHT tracking

0:EHT

tracking

mode

0/1 1

Only

on vertical

1:EHT tracking on

vertical&EW

(12) Page 12

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

AGN AGN gain

demodulator

0: normal

1: +6dB

0: PAL AGN=0

NTSC AGN=0

1: PAL AGN=0

NTSC AGN=1

2: PAL AGN=1

NTSC AGN=0

3: PAL AGN=1

NTSC AGN=1

(

(MTS)

MTS

）

Page 21

Service Modes

3P66

EN 20

AGNE1&AGNE0 AGNE Extended gain

settings for FM demodulator

0: normal 1: +3.8dB 2: -6dB 3: -3dB

FMWS1&FMWS2 FMWS Window select for

FM demodulator

0: 100kHz

1: 225kHz

2: 450kHz 3: 900kHz

BPB2 BPB2

Bypass sound bandpass

filter

section 2

0: active 1: bypass

FFI FF1 Fast filter IF-PLL 0: normal time

1: increased time

COR1&COR2 A-COR Video dependent

coring

For AV

0: off 1: 0 and 20 IRE

2: 0 and 40 IRE

3: 0 and 100 IRE

COR1&COR2 T-COR Video dependent

coring

For TV

0: off 1: 0 and 20 IRE

2: 0 and 40 IRE 3: 0 and 100 IRE

PF0&PF1 PEAK Peaking center 000000b-111111b 56

frequency

and

delay

0: 2.7MHz 190ns

1: 3.1MHz 160ns

bit0,bit1 NTSC PEAK FQ bit2,bit3 PAL PEAK FQ

bit4,bit5 AV PEAK FQ

2: 3.5MHz 143ns

3: 4.0MHz 125ns

FOA&FOB FOA-FOB Phase

constant

00:normal

01:slow

10:OSDmode

time

0:FOA=1 FOB=1 AV

FOA=0 FOB=0 TV

1:FOA=1 FOB=0 2:FOA=0 FOB=1

11:fast

DSG of TV TV -DSG Gain from audio

inputs to audio

0: 0dB

1: +6dB

outputs(TV)

DSG of AV AV -DSG Gain from audio

inputs to audio

0: 0dB 1: +6dB

outputs(AV)

LOGO position LOGO-UD LOGO position 0…63 10

Page 22

EN 21

3P66

Service Modes

Menu horizontal

position

DSGLS register DSGLS Extra

MENU-H Menu horizontal

position

gain

selection

0…63 35

0: 0dB 1

loudspeaker

outputs

(13) Page 13

1: +6dB

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

Slicing level SSL

Slicing level FSL Forced slicing level

Slicing level for

horizontal sync separate

for vertical sync

0: 50%

1: 30%

0:slicing

dependent

level

noise detector

1:fixed

slicing

level of 60%

AAS0&AAS1 AAS Black area to switch

off the black strech

0: 12% 1: 20%

2: 6%

3: 8%

SOC0&SOC1 SOC Soft clipping level

0…3 2

00: 0%above PWL

01: 5%above PWL

10: 10%above PWL 11: soft clipping off

MUTE PIN logic M-MUTE MUTE PIN logic 0: for 7266SA

mute L no mute H

1: for 2052

mute H

no mute L

HBL HBL RGB blanking mode 0:normal blanking

1:wide blanking

WBF WBF Timing of wide blank

(Lift wide blanking)

WBR WBR Timing of wide blank

(Right wide blanking)

0: 3.5us

15: 5.9us

0: 7.8us

15: 10.2us

Page 23

Service Modes

(14) Page 14

3P66

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

NVM version C0 Char0 48…255

NVM version C1 Char1 48…255

NVM version C2 Char2 48…255

NVM version Y Year 8…10

NVM version M Month 0…12

NVM version D Day 0…31

EN 22

XDT XDT X-ray protection 0: hardware

1: software

XDT SW active XDT-OFFON XDT SW active 0: not active

1: active

SW detect times XDT-TIME SW detect times 0…255 10

STB setting STB Standby 0: standby

1: normal

EVG register EVG Enable vertical

guard

CHSE1&CHSE0

CHSE The CHSE

vaule of strong

signal

0: not active

1: active

0: -34dB 1: -37dB

2: -41dB

3: -46dB

Auto low signal identify CHSE ON The switch of

Weak signal

0: turn off

1: turn on

identify

(15) Page 15

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

Black balance of

YUV

Y-BR Black balance of

YUV (Red)

-32…31 +2

Page 24

EN 23

3P66

Service Modes

Black balance of

Y-BG Black balance of

YUV

Black balance of

Y-BB Black balance of

YUV

White balance of

Y-WR Black balance of

YUV

Black balance of

Y-WG Black balance of

YUV

Black balance of

Y-WB Black balance of

YUV

4.11. White Balance auto-adjustment4.11. White Balance auto-adjustment

White

CPU

CPU Sub address

YUV (Green)

YUV (Blue)

YUV (RED)

YUV (Green)

YUV (Blue)

-32…31 0

-32…31 +3

-32…31 +2

-32…31 0

NVM

NVM Sub

Balance

Item

Slave

address

(TDA11135,11136,12156,11145,12165

/ TDA11105,TDA11106)

Slave

address

BLOR 0x8A 0x17 / 0x09 0xa0 0x003b

BLO G 0x8A 0x1 8 / 0x0 a 0xa0 0x003 c

BLO B

WPR

WPG

WPB

0x8A

0x1 6 / 0x0 b

0x 2 0

0x21/

0x22/

/0x12

0x 1 3

0x 1 4

0xa0

0x003 d

0x003 e

0x003 f

0x004 0

Page 25

Block Diagram Chassis

3P66

E24

Page 26

Circuit

Diagrams

Circuit Diagrams and PWB Layouts

3P66

E25

Page 27

Main PCB (Top Side)

Circuit Diagrams and PWB Layouts

3P66

E26

Page 28

Main PCB (Bottom Side)

Circuit Diagrams and PWB Layouts

3P66

E27

Page 29

EN 28

3P66

IC601(POWER SUPPLY)STR-W6554A Block Diagram:

IC Data Sheet

Page 30

IC Data Sheet

IC101(OTP SIGNAL PROCESSOR FOR CRT TV)TDA11106PS N3 Block Diagram:

3P66

EN 29

Page 31

EN 30

3P66

IC Data Sheet

Page 32

Troubleshooting

3P66

8.Troubleshooting

The following problems do not always indicate a hardware failure. Therefore, please use the

guide

before calling for repair service. If, after following the

service.

Problem Checks and Adjustments

none of the remedies work, unplug the TV and call for

troubleshooting guide below

EN 31

TV will not turn on

No picture, no sound

No sound, picture OK

Spots on the screen (Snow)

Poor reception of broadcast channels

Make sure the power cord is plugged in,

then press POWER button.

Check battery in the remote control.

(Maybe batteries are dead.)

Ensure the TV power is ON . Check antenna/ cable connections. Try different channel.

Maybe sound is muted. Try pressing

VOL+ button is not set to minimum. Try another channel. Check the AV cables for disconnection.

Maybe the TV is being affected by

interference from automobiles, trains,

high-voltage transmission lines, neon

signs or another sources of interference.

Try redirecting or relocating your antenna

to reduce the affects of the interference. Change channels to confirm if the

symptom is still present.

Try another channel.

Check antenna connections. If using VCR, check TV/VCR button. Adjust fine tuning control. Probably local interference, such as an

appliance.

VCR

Cannot select a certain channel

Remote Control does not operate

The picture is doubled or tripled (GHOST)

Degraded colours or tints

When the VCR test signal (TSG) is

received, the lower side of the test pattern is distorted as shown in the figure. This is not a malfunction and the playback picture is not influenced by it.

That channel may be locked out with

SKIP CHANNEL function.

Check for any obstacle between the

remote control and the remote control sensor window .

Maybe batteries are dead. Try replacing

batteries with new ones.

Check for incorrect battery orientation.

Please change the direction, height or

positionof the antenna. Reflections from building or mountains might cause this phenomenon. A highly directional antenna may improve the reception.

Check whether all the picture adjustments

have been properly performed. Enter into the (Picture mode) inside the menu to select a different picture set-up.