DYNEX SERVICE MANUAL - rtellason.comrtellason.com/manuals/Service manual DX-LDVD19-10A.pdf · 1...

1

DYNEX SERVICE MANUAL

WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does

not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products

powered b electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the

product deal with in this service information by anyone else could result in serious injury or death.

COLOR TVModel No. DX-LDVD19-10A

2009 (Qingdao Electronics limited company)

All rights reserved. Unauthorized copying and distribution is a violation of

law.

2

CONTENTS Table of contents………………..................………………….……….2 1. General Information…………...............…………………………..4

1.1 General Guidelines................................................................................4 1.2 Important notice…………………………………………………………..…4

2. SPECIFICATIONS………………………………………………….…...7

3. LOCATION OF CONTROLS AND COMPONENTS…..…..8

3.1Board Location……………………………….. ………….……………..…..8

3.2 A Board----Main Board………………………………...…………...……....8

3.3 B Board----Power Board……………………………..………….... ……..12

3.4 LCD Panel……………………………….. ………..………………………13

4. Disassemble and assemble…...………..…………………….....16

4.1 Remove the Pedestal…..……………………….….………………….….16

4.2 Remove the Front Cabinet….…….……………………...……….………16

4.3 Remove the LCD panel……………………………………………………16

4.4 Remove the Main Board…………………………………………..………17

4.5 Remove the Power Board.………...…………………..………….………17

4.6 Remove the DVD Keypad Assembly and DVD…………….……….….17

4.7 Remove the Speaker….…………………………...………….……….….17

4.8 Remove the Keypad Assembly…………………….…….…………....…17

4.9 Remove the Remote Control Board…………………………...…………17

5. INSTALLATION INSTRUCTIONS…………………………...….18

6. OPERATION INSTRUCTIONS……………………………….…..21

6.1 Front Panel Controls…………………………………………..................21

6.2 Back Panel Controls………………………………………….……….......22

1.3 How to read this Service Maunal…………………………………………..5

3

6.3 Setting up Your Remote Control…………………………………..……..23

7. MEASUREMENTS AND ADJUSTMENTS…………………..26

8. Electrical parts……………………………...…………………………..30

8.1 Wiring Connection Diagram…………………..……………………..……30

8.2 Block Diagram…….………………………………..……….…………......32

8.3 Circuit Diagram……………………………….........................................32

9. Trouble Shooting Guide …………………………………………..50

4

1. General Information 1.1 General GuidelinesWhen servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.

1) Leakage Current Cold Check 2) Leakage Current Hot Check 3) Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive

1.2 Important notice 1.2.1 Follow the regulations and warningsMost important thing is to list up the potential hazard or risk for the service personnel to open the units and disassemble the units. For example, we need to describe properly how to avoid the possibility to get electrical shock from the live power supply or charged electrical parts (even the power is off).

This symbol indicates that high voltage is present inside. It is dangerous to make any king of contact with any inside part of this product.

This symbol indicates that there are important operating and maintenance instructions in the literture accompanying the appliance

1.2.2 Be careful to the electrical shock To prevent damage which might result in electric shock or fire, do not expose this TV set to rain or excessive moisture. This TV must not be exposed to dripping or splashing water, and objects

Filled with liquid, such as vases, must not be place on top of or above the TV

1.2.3 Electro static discharge (ESD)Some semiconductor (solid state) devices can be damaged easily by static electricity. Such Components commonly are called Electrostatically Sensitive (ES) Devices. The following tech-niquesshouldbeusedtohelpreducetheincidenceofcomponentdamagecausedbyelectro Static discharge (ESD). 1.2.4 About lead free solder (PbF)This product is manufactured using lead-free solder as a part of a movement within the consum-er products industry at large to be environmentally responsible. Lead-free solder must be used in the servicing and repair of this product. 1.2.5 Use the genewing parts (specified parts)Special parts which have purposes of fire retardant (resistors),high-quality sound (capacitors), low noise(resistors), etc. are used. When replacing any of components, be sure to use only manufacture's specified parts shown in the parts list.

Safety Component Components identified by mark have special characteristics important for safety.

5

1.2.6 Take Care to Deal With The Cathode-Ray TubeIn the condition that an explosion-proof cathoderay tube is set in this equipment, safety is se-cured

against implosion. However, when removing it or serving from backward, it is dangerous to give a

shock. Take enough care to deal with it.

1.2.7 Safety Check after RepairmentConfirm that the screws ,parts and wiring which were removed in order to service are put in the

original positions, or whether there are the portions which are deteriorated around the serviced

places serviced or not. Check the insulation between the antenna terminal or external metal and

the AC cord plug blades. And be sure the safety of that.

Insuration Test1. Unplug the plug from the AC outlet.

2. Remove the antenna terminal on TV and turn on the TV. 3. Insulation resistance between the cord plug terminals and the eternal exposure metal

should be more than M ohm by using the 500V insulation resistance meter

4. If the insulation resistance is less than M ohm, the inspection repair should be required. If you have not the 500V insulation resistance meter, use a Tester. External exposure metal: Antenna terminal Headphone jack

1.2.8 Ordering Spare PartsPlease include the following informations when you order parts. (Particularly the Version letter)1. Model number and Version letter

The model number can be found on the back of each product and the Version letter can be found at the end of the serial number.

2. Part No. and Description You can find them in your service manual.

1.2.9 Photo used in this manualThe illustration and photos used in this Manual may not base on the final design of products, which may differ from your products in some way.

1.3 How to read this Service Manual1.3.1 Using IconsIcons are used to attract the attention of the reader to specific information. The meaning of each icon is

described in the table below:

Note:A “note” provides information that is not indispensable, but may nevertheless be valuable to the reader, such as tips and tricks.

Caution:A “caution” is used when there is danger that the reader, through incorrect manipulation,

6

may damage equipment, loose data, get an unexpected result or has to restart(part of) a procedure.

Warning:A “warning” is used when there is danger of personal injury.

Reference:A “reference” guides the reader to other places in this binder or in this manual, where he/she will find additional information on a specific topic.

7

2. Specification

Screen Size 18.5" Display Type LCD Panel Supplier AUO Panel Technology TN Panel 60 Hz vs.120 Hz 60Hz Display Resolution 720P Panel Resolution 1366(H)x768(V) Backlight Technology CCFL Aspect Ratio 16:9 Contrast Ratio 1000:1 Brightness cd/m2 300 Panel Native Color Temperature 6500 Uniformity 0.75(9point) Response Time - Fact Tag 5ms Panel Bit Depth 6bit Lamp Life 50000 Horizontal Viewing Angle 170 Vertical Viewing Angle 160 Chipset Provider & part # zoran775 ATSC Tuner with Clear QAM Yes NTSC Tuner (air & cable) Yes Tuner Module Provider & part # NXP Comb Filter 3d y/c digital USB Port for thumb drive (side) - Supports F/W Upgrade, MP3, JPEG Yes(For firmware update, back side, with cover) PC Input - VGA (back) Yes (SIDE BACK) Shared Audio Inputs Yes (COMPOSITE & S-VIDEO) RF Input (back) Yes (SIDE BACK) Watts/Channel 3W x 2 Sound Leveler Yes Audio-only (panel off) Yes MTS/SAP Yes Mono or Stereo Speaker Stereo Power Light On-Blue; Off-red Power: AC 120volt/60Hz Yes DVD Player Yes

Optical Disk Playback Support DVD Video/-R/-RW/+R/+RW/CD-R/-RW/JPEG

PhotoDVD video interface to TV Component - Progressive PC Input Max, Resolution (match panel) 1360*768

8

3. LOCATION OF CONTROLS AND COMPONENTS 3.1 Board Location

No. Description A Board Main Board B Board Power supply Board C DVD D Speaker

3.2 A Board----Main Board

3.2. 1 Function Description:

Main Board

Process signal which incept from exterior equipment then translate into signal that panel can display.

3.2.2 Connector definition

A Board

C

B Board

D

9

Main board connector

LVDS Connector (CN7)

Pin number Signal name Description 1-3 LVDSVDD Power for panel 4-6 GND Ground 7 A0N LVDS EVEN 0 - Signal 8 A0P LVDS EVEN 0 + Signal9 A1N LVDS EVEN 1 - Signal10 A1P LVDS EVEN 1 + Signal11 A2N LVDS EVEN 2 - Signal12 A2P LVDS EVEN 2 + Signal13,14 GND Ground 15 CK1N LVDS EVEN Clock - Signal16 CK1P LVDS EVEN Clock + Signal17 A3N LVDS EVEN 3 - Signal

PIN 1

10

Power supply and Inverter Connector CN3

Pinnumber Signal name Description

GroundGround

Power

Power

Audio Output Connector CN1


18 A3P LVDS EVEN 3 + Signal19 NC NC 20 NC NC 21 NC NC 22 NC NC 23 NC NC 24 NC NC 25,26 GND Ground27 NC NC 28 NC NC 29 NC NC 30 NC NC

PIN 1

PIN 1

11

Audio OutputGroundGround

Audio Output

Connector


Power

Ground

Key Connector Key Connector

Key ConnectorKey ConnectorKey ConnectorKey Connector

Key ConnectorDVD Power Connector (CN5)


1 STB stand by 2 5V 5V Power 3 GND Ground 4 GND Ground 5 12V 12V Power

DVD Video Connector (CN6)

PIN 1

PIN 1

12


1 DVD_SW DVD2 DVD_PB Pb Signal 3 DVD_Y Y Signal 4 GND Ground 5 DVD_PR Pr Signal 6 GND Ground 7 DVD_IR IR control

DVD Audio Connector (P1)


1 DVD_L_IN Left track 2 DVD_R_IN Right track 3 GND Ground

Update Connector (CN4)


Ground

3.3.B Board------- (Power Board) Supply power for Main board and Panel

PIN 1

PIN 1

PIN 1

13

Power supply and Inverter Connector CN10Pin

number Signal name Description

GroundGround

Power

Power

Other Connector AC150V~AC240V Input (CN13)Power supply for panel (CN11) Power supply for panel (CN12)

3.4. LCD PANEL.

14

Connector definition

4.1 Remove the Pedestal

① Lay down the unit so that rear

cover downward.② Remove the two screw from the pedestal indicated with③

.

Then remove the pedestal .

①

②

4.2Remove the Front Cabinet

Remover pin indicated with .

Remover the six screw indicated with

Turn to front cover upwards

4.3Remove the LCD panel

①

Remover the four screw indicated with

.

Remover the pin indicated with ≯.

①

4.4Remove the Main Board

①

Remover the two screw indicated with .

Remover the four screw indicated with ≯.

4.5Remove the Power Board


4.8Remove the Keypad

Assembly

Remover the two screw indicated with

.


.

Then remove the . Shield Shelf

4.6Remove the DVD Keypad

Assembly and DVD

4.7Remove the Speaker


4.9Remove the Remote

Control Board

Remover the one screw indicated with

.

24

5. INSTALLATION INSTRUCTIONS Accessories

Remote Control User Manual Battery

Connecting an antenna or cable TVTo connect an antenna, cable TV, or satellite TV box:

1 Connect one end of a 75 ohm cable (not included) to the RF OUT jack on the antenna or on the cable or satellite TV box.

2 Connect the other end of the cable to the ANT/CABLE IN jack on the back of your TV.

Notes:

Use a 75 ohm cable to eliminate interference and noise from radio waves.

Do not bundle the 75 ohm cable with the power cord or other cables.

If the antenna is not installed correctly, contact qualified service personnel to correct the problem.

To improve picture quality in a poor signal area, purchase and install a signal amplifier.

Connecting a cable TV or satellite boxIf you subscribe to a cable TV service from a local provider you can watch cable TV programming. The TV cannot display TV programming unless a TV tuner device or cable TV converter box is connected to the TV.

For further information regarding cable TV service, contact your local cable TV service provider(s).

To connect to a cable TV or satellite TV box:1 Connect the incoming cable from the satellite wall jack to the

SATELLITE IN jack on the satellite box.

2 Depending on the jacks available on the satellite TV receiver (set top box), connect a cable from the outgoing jacks on the satellite box to the corresponding jacks on the back of your TV. The connection can be to the HDMI, component video, S-Video, or AV jack.

3 If you use a component video, S-Video, or AV cable, connect audio cables to the corresponding jacks on the back of your TV and on the staellite box.

4 Turn on your TV, then press INPUT to select VIDEO mode for the type of connection you use.

5 Select the channel you want with the remote control for the cable box.

Connecting a VCRTo connect a VCR (option 1):

1 Make sure that your TV’s power cord is unplugged and the VCR is turned off.

2 Connect a 75 ohm RF wire to the ANT OUT jack on your VCR and to the ANT/CABLE IN jack on your TV (1), then switch the output of the VCR to 3 or 4 and tune your TV to the same channel.

To connect a VCR (option 2):1 Make sure that your TV’s power cord is unplugged and the VCR is

turned off.

2 Connect an AV cable to the AV VIDEO OUT jack on the VCR.

3 Connect the other end of the cable to the VIDEO IN jack on the back of your TV.

VHF antennaUHF antenna

ANT/CABLE INMulti-family dwellings or apartmentsConnect to wall antenna outlet.

Bronze wire - do not bend

Wall antenna outlet

75 ohm RF coaxial wire

Single-family dwellings or housesConnect to wall antenna jack for outdoor antenna.

Turn clockwise to tighten

Bronze wire - do not bend

Back of TV

S-Vi

deo

cabl

e

Com

pone

nt v

ideo

cab

les

HD

MI c

able

Cable box

CO

MP

ON

EN

TIN

AUDI

OIN

RL

VIDE

OIN

YPb

P r

S-VI

DEO

INA U

DIO

INL

RAN

T /CA

BLE

IN

VCR

1

2

Back of TV

To S-VIDEO IN jack

To VIDEO IN and AUDIO-L and R jacks

S-Vi

deo

cabl

e

75 ohm RF wire

Note: Cables are often color-coded to connectors. Connect yellow to yellow, red to red, and white to white.

Vide

o ca

ble

AUD

IO-L

and

R c

able

s

For a better picture, you can connect an S-Video cable to the S-VIDEO Out jack on the VCR and to the S-VIDEO IN jack on your TV.

4 Connect an audio cable to the AV AUDIO OUT jacks on the VCR.

5 Connect the other end of the cable to the AUDIO IN L and R jacks on the back of your TV.

To play from the VCR (option 2):1 Turn on your TV, then press INPUT to select Composite or

S-Video input mode.

2 Turn on the VCR, insert a videotape, then press PLAY on the VCR.

Connecting a camcorder or gameTip: Some game consoles have an HDMI connector, which can be used for

a better picture.

To connect a camcorder or game:1 Make sure that your TV’s power cord is unplugged and the

camcorder or game is turned off.

2 Connect an AV cable to the AV OUT VIDEO, AUDIO-L, and AUDIO-R jacks on the camcorder or game.

3 Connect the other end of the cable to the VIDEO IN, AUDIO-L, and AUDIO-R jacks on the back of your TV.

To play from a camcorder or game:1 Turn on your TV, then press INPUT to select Composite mode.

2 Turn on the camcorder or game, and set it to the correct output mode. See the camcorder’s or game’s user guides for more information.

Connecting an HDMI deviceTo connect an HDMI device:

1 Make sure that your TV’s power cord is unplugged and the HDMI device is turned off.

2 Connect an HDMI cable to the HDMI OUT jack on the HDMI device.

3 Connect the other end of the cable to the HDMI jack on the back of your TV.

To play from the HDMI device:1 Turn on your TV, then press INPUT select HDMI.

2 Turn on the HDMI device, and set it to the correct output mode. See the HDMI device’s user guide for more information.

Note: If the external device has DVI output only, use a DVI-to-HDMI adapter to connect to the HDMI jack, then connect an audio cable to the PC AUDIO IN jack.

Connecting a component video deviceTo connect a component video device:

1 Make sure that your TV’s power cord is unplugged and the component video device is turned off.

2 Connect a component video cable to the COMPONENT OUT jacks on the component video device.

3 Connect the other end of the component video cable to the COMPONENT IN jacks on the back of your TV.

4 Connect an audio cable to the AUDIO OUT jacks (L/R) on the component device.

5 Connect the other end of the audio cable to the COMPONENT AUDIO-R and AUDIO-L jacks on the back of your TV.

To play from a component device:1 Turn on your TV, then press INPUT to select Component.

2 Turn on the component video device and set it to the correct output mode. See the component video device’s user guide for more information.

Connecting a computerTip: Some computers have an HDMI connector, which can be used for a

better picture.

To connect a computer:1 Make sure that your TV’s power cord is unplugged and the

computer is turned off.

2 Connect a VGA cable (not provided) to the VGA jack on the computer, then connect the other end of the cable to the VGA IN jack on the back of your TV.

Note: The VGA cable should be a 15-pin D-Sub (analog RGB) cable.

AUDI

OIN

RL

V IDE

OIN

S-VI

DEO

IN

Camcorder or game

Back of TV

AV cable

Note: Cables are often color-coded to connectorsConnect yellow to yellow, red to red, and white to white.

HD

MI

HDMI

Back of TV

HDMI cable

Device with HDMI output

CO

MP

ON

EN

TIN

YPb

Pr

S-VI

DEO

INAU

DIO

INL

R

Back of TV

Com

pone

nt v

ideo

cab

les

Aud

io c

able

s

Component video device

Note: Cables are often color-coded to connectors.

PCAU

D IOIN

VG

AIN

Audio cable (stereo mini plugs)

D-Sub cable (analog RGB)

Back of TV

Computer

27

6. OPERATION INSTRUCTIONS Basal information

6.1 Front panel controls

TV componentsFront and side panels

# Component Description

1 MENU Press to open the on-screen menu.

2 INPUT Press to select the video input source.

3 VOL+/VOL- Press to increase or decrease the volume.

4 CH+/CH- Press to go to the next or previous channel in the channel list.

VOL VOL CH CH POWERMENU INPUT + - + -

5 POWER button Press to turn on your TV. Press again to put your TV in standby mode.

6 Power indicator Lights blue when your TV is turned on. Lights red when your TV is in standby mode. Not lit when the power cord is unplugged.

7 Remote sensor Receives signals from the remote control. Do not block.

# Component Description

28

6.2 Back panel controls

Back## Component Description

1 HDMI jack Connect an HDMI device, such as a cable box or DVD player, to this jack. An HDMI cable carries both video and audio, so you do not need to make an audio connection. For more information, see “Connecting an HDMI device” on page 9.

2 PC AUDIO jack Connect the audio output from your computer to this jack. For more information, see “Connecting a computer” on page 9.

3 VGA jack Connect the video output from your computer to this jack. For more information, see “Connecting a computer” on page 9.

4 SERVICE For firmware update only.

5 VIDEO IN jack Connect the video output from an AV device to this jack. For more information, see “Connecting a VCR” on page 8.

PCAU

D IOIN

CO

MPO

NEN

TIN

A UDI

OIN

RL

VIDEO

IN

YP b

Pr

S-VI

DEO

INA U

DIO

INL

RAN

T/CA

B LE

INVG

AIN

HD

MI

S ERV

I CE

6 AUDIO IN jacks Connect the audio output (L and R) from an AV device to these jacks. For more information, see “Connecting a VCR” on page 8.

7 S-VIDEO jack Connect an S-Video device to this jack. S-Video does not carry an audio signal, so you will need to connect audio cables from the device to the AUDIO IN jacks.

8 COMPONENT IN jacks

Connect a component video device to these jacks. For more information, see “Connecting a component video device” on page 9.

9 (Component) AUDIO IN jacks

Connect the audio output (L and R) from a component device to these jacks. For more information, see “Connecting a component video device” on page 9.

10 Headphone jack Plug headphones into this jack.

11 ANT/CABLE IN jack Connect the 75 ohm cable from an antenna or cable box to this jack.

## Component Description

29

6.3 Setting up Your Remote Control

Remote control

POWER DVD OPEN/CLOSE

CCD MTS/SAP SLEEP PICTURE

1 2 3

4 5 6

7 8 9

0

MUTECH+

CH-

VOL-

VOL+

ENTER

MENU INFO

CH.LIST FAVORITE ZOOM

TITLE DISPLAY SETUP SUBTITLE

REV PREV NEXT

PLAY/ENTER

PAUSEMENU STOP

SLOW

ZOOM T.SEARCH

PROGRAM REPEAT A-B

EXIT

RECALL

INPUT

ANGLE

AUDIO

GUIDE

43

3435

3637

38

3132

33

40

4241

39

10+

# Button Description

1 POWER Press to turn on your TV. Press again to put your TV in Standby mode.

2 INPUT Press to select the input source.

3 CCD Press to turn closed captioning on or off. For more information, see “Using closed captioning” on page 20.

4 MTS/SAP Press to select the audio mode. For analog channels, you can select STEREO, SAP (secondary audio program), or MONO.For digital channels, you can select the audio track (if more than one track is available). For more information, see “Adjusting the sound” on page 13.

5 Numbers Press to enter channel numbers or the parental control password.

6 RECALL Press to go to the last viewed channel.

Using the remote controlInstalling remote control batteries

To install remote control batteries:1 Open the battery compartment cover by pressing the release

button.

2 Insert two AA batteries into the battery compartment. Make sure that the + and – symbols on the batteries match the + and – symbols in the battery compartment.

3 Replace the cover.

Notes:

Do not mix different types of batteries.

Do not mix old and new batteries.

Remove batteries when they no longer have a charge. Chemicals may leak into the battery compartment. Battery chemicals can cause a rash. If chemicals leak, clean the battery compartment with a cloth.

Remove the batteries if you do not intend to use the remote control for an extended amount of time.

Do not dispose of batteries in a fire. Dispose of them as hazardous waste.

7 CH+/CH-VOL+/VOL–

Press CH+ or CH- to go to the next or previous channel in the channel list. For more information, see “Selecting a channel” on page 11.Press VOL+ or VOL- to increase or decrease the volume.

8 ENTER Press to confirm selections in an on-screen menu or to open a submenu.

9 MENU Press to open the on-screen menu.

10 CH.LIST Press to open the channel list. For more information, see “Selecting a channel” on page 11.

11 FAVORITE Press to display the favorite channel list. For more information, see “Setting up a favorite channel list” on page 15.

12 TITLE Press to display the DVD title menu (when available).

13 DISPLAY Press to cycle through information about the DVD, including Time Elapsed, Time Remaining, Chapter Elapsed, Chapter Remaining, and Display off.

14 REV Press to fast reverse a DVD.

15 FWD Press to fast forward a DVD.

16 MENU Press to go to the root menu on a DVD.

17 PLAY/ENTER Press to play a DVD.

18 , , , and Arrow keys

Press to navigate in the on-screen DVD menus.

19 ANGLE Press to change the viewing angle of a DVD (when available).

20 AUDIO Press to select the audio track of a DVD.

21 PROGRAM Press to program DVD playback.

22 OPEN/CLOSE Press to eject the DVD.

23 DVD Press to go to DVD mode.

24 PICTURE Press to select the picture mode. You can select Vivid, Standard, Energy Savings, Theater, Sports, or Custom. For more information, see “Adjusting the picture” on page 12.

25 SLEEP Press to set the sleep timer. For more information, see “Setting the sleep timer” on page 21.

26 • (Dot) Press to enter a digital sub-channel.

27 GUIDE Press to display EPG OSD of the channel, including program name. channel number, program description, channel label and program show time.

28 MUTE Press to turn off the sound. Press again to turn on the sound. Does not affect headphones.

29 INFO Press to display information about the current program. For more information, see “Displaying additional information” on page 12.

30 EXIT Press to close the on-screen menu.

31 ZOOM Press to select the aspect ratio of the picture. You can select Normal, Zoom, Wide, Cinema, or Auto Zoom. For more information, see “Adjusting the TV picture” on page 12.

32 SUBTITLE Press to turn on DVD sub-titles and select the subtitle language.


33 SETUP Press to open the DVD General Setup Page. Press twice to open the DVD Preference Page.

34 NEXT Press to go to the next chapter on a DVD.

35 PREV Press to go to the previous chapter on a DVD.

36 PAUSE Press to pause DVD playback.

37 STOP Press to stop DVD playback.

38 SLOW Press to play a DVD in slow motion. Each time this button is pressed, the setting changes.

39 T.SEARCH Press to display the DVD search menu.

40 ZOOM Press to zoom in on the DVD picture.

41 A-B Press to replay a selected portion of the DVD.

42 REPEAT Press to repeat a DVD chapter. Press again to repeat a DVD title. Press again to repeat the entire DVD. Press again to cancel.

43 DVD 10+ If a chapter or track number is over 10, press this button, then press the number for last digit in the chapter or track number.


Aiming the remote controlTo use the remote control:

• Point the remote control towards the remote sensor on the front of your TV. The remote control’s range is about 26 ft. (8 m).

Notes:

Do not expose the remote control to shock or liquids.

Do not use the remote control in an area with high humidity.

Do not place the remote control in direct sunlight.

Do not place objects, such as furniture, between the remote control and the remote sensor.

The remote control may not work if direct sunlight or bright light shines on the remote sensor. Either move your TV or change the angle at which you use the remote control.

Programming a universal remote control to work with your TV

You can operate your TV with a new or existing universal remote control.

To program a universal remote control:1 Find the code for your universal remote control by identifying its

model (or your set-top box’s remote control manufacturer and model) on the charts below, then make note of the numbered code below it. You will use the numbered code to program your remote control to work with your TV.

Codes for other remote controls are available online at: www.dynexproducts/universalcontrolcodes.aspx

Tips:

• The brand name is often visible on the front of the universal remote control, and the model number is often visible on the back.

• If your universal remote control isn’t listed on the chart, refer to your universal remote control’s instructions and try codes for the brands Orion, Emerson, Memorex, Sansui, Sylvania, or Zenith. You may need to try several codes before finding a match.

2 Follow your universal remote control’s instructions to enter the code you found in Step 1.

Tips:

• If your universal remote control has a code search feature, run a code search to identify a code that matches your TV. See your universal remote control’s instructions for details.

• If your universal remote control has a “Learn” feature, you can manually program it using your TV remote to “teach” the commands one at a time. See your universal remote control’s instructions for details.

3 If all else fails, you must use a different universal remote control that can operate both your set-top box and your TV. Five such remotes are listed on the chart, but many other compatible models are available in the market.

For more help, call technical support for your universal remote control or set-top box manufacturer, or call the Dynex Customer Care Center at 1-800-305-2204.

Dynex TV codes for universal remote controls(for all Dynex TVs manufactured after Jan. 1, 2007)

Universal remote control manufacturer and model

Philips PHDVD5, PH5DSS, PMDVR8, PDVR8

RCARCU807

One for AllURC-6690

SonyRM-VL600

115 135 0464 8043

Set-top box manufacturer and model

ComcastM1057

Dish NetworkVIP508, VIP622

MotorolaDRC800

TIVOSeries 3, HD

DirectTVRC23

0463 720 0463 0091 10463

30

7. MEASUREMENTS AND ADJUSTMENTS The way to the factory mode menu: First: press menu, Second: choose the AUDIO,Third: input 8893. Finished these operations, system will be into the factory mode menu. Press toselect articles, and then press the Right or enter button to sub-menu.

Software Upgrade

White Balance/Color Temp

31

Picture Mode Setting

Audio Mode Setting

32

SSPLL Setting

IF you want to exit this factory menu, please press the button” Exit” in the remoter.

7.1 Picture

1 Press MENU. The on-screen menu opens with the Picture menudisplayed, then press ENTER/CH- . The Picture menu opens.2 Press CH+ or CH- to highlight an option, then pressENTER/VOL+ to enter the sub-menu. You can select:o Mode-Selects the picture mode - Vivid, Standard,Energy Savings, Theater, Sports, or Custom. You canalso press PICTURE on the remote control to select thepicture mode.o Brightness-Adjusts the brightness.o Contrast-Adjusts the contrast.o Color-Adjusts the color saturation.o Tint-Adjusts the image tint.o Sharpness-Adjusts the sharpness.o Advanced Video-Lets you set the following:o Aspect Ratio-Select Normal, Zoom, Wide, Cinema,or Auto Zoom.o Overscan-Turn this On to adjust the picture'sreproduction rate when receiving DVI signals in VIDEOformat. Available when the signal uses EIA timing(480i/480p/720p/1080i/1080p).3 Press MENU to return to the previous menu, or press EXIT toclose the menu.

33

7.2 Audio

1 Press MENU. The on-screen menu opens.

2 Press VOL+ or VOL- to highlight AUDIO, then pressENTER/CH-. The Audio menu opens.3 Press CH+ or CH- to highlight an option, press ENTER/VOL+ toopen the sub-menu, then press CH+/- to adjust.

34

7.3 CHANNELS

7.4 SETTINGS

1 Press MENU. The on-screen menu opens.

2 Press VOL+ or VOL- to highlight CHANNELS, then press

ENTER/CH-.

Parental controls let you prevent your children from watchinginappropriate material on TV. When set, parental controls read therating of the program (with some exceptions, such as news and sports)and deny access to programs that exceed the ratings level you select. Towatch programs that exceed the selected rating, you must enter apassword.

8. Electrical parts8.1 Wiring Connection Diagram

o

Workout Auditing Standard-ization Approve

brandcustomer

export country

special techniquedocument number

special number

customer type DX-LDVD19-10A

LX19 T2W

DC16 K 0E0100

AMERICABBY

DYNEX

AT09SR0305US04

special techniquedocument number

BESTBUYAmerica

brandcustomer

export country

special numberhaier type

customer type

DYNEX

Explain: The line bundle screw and the damageable element that does not mark in explosion picture please refer to BOM

ApproveStandard-izationAuditingWorkout

numbername special number standardreference number

LCD panel bracket

Base neck

reference number

name special number standard number

l

0090204117

Plastic Front Cabinet

Speaker

Base pannel

DVD Keypad Auto-inserted Board Assembly

8.2 Block Diagram

8.3 Circuit Diagram

37

9. TROUBLE SHOOTING GUIDE 9.1. Simple check

No Picture, no sound Verify if the television is properly plugged Verify if the television is properly supplied power Verify if electricity is available

Blank screen

Verify if correct signals are input Press INPUT button to change signal input to TV input Restart the television of power supply is interrupted

No sound

Press Mute button and verify if Mute mode is set. Switch to other channel and verify if the same problem happens. Press VOL+ button to see of he problem can be solved.

Poor sound Verify if sound system is correct .Refer to some chapter for adjust.

No picture in some channel

Verify if correct channel is selected. Adjust the antenna. Make adjustments by Fine Tune and MANUAL Scan.

No color for some channel program(black and white)

Verify if the same problem exists in other channels. check out of picture and sound system. Refer to relative instructions in the Manual for color adjusts.

Spots with some or all pictures Verify if the antennal is correctly connected. Verify if the antennal is in good condition. Make fine adjustment of channel.

Horizontal/vertical bars or picture shaking

Check for local interference such as an electrical appliance or power tool.

Television out of control

Disconnect the television from power supply and 10 seconds later, connect the television to the power supply. If the problem still exists, contact authorized after-sales service for technical assistance.

9.2 Power Supply Board failure check

38

9.3 Main board failure check

State: No power First, check cables which connect with PSU, then check as follows

1) Check PSB input voltage AC inputvoltage : 120VConnector: CN13

2 Check PSB output voltage orderlyVoltage: +12V, +12V Connector: CN10

32

9.3 Main board failure check State: No picture

Fail Pass

Fail Pass

Fail Pass

Fail Pass

Fail Pass

No Sound (All Mode)

Check the input Source Change Source input

Check the input/output

Of IC U22 of Main B/D Re-soldering or change IC U22





Check the Speaker Change the Speaker

Check the Sperker wire

33

State No picture

Fail

Pass

Fail Pass

Fail Pass

Fail

Pass

No Raster

on Panel

Check the backlight B/D

Change the backlight B/D

Check the input/output of

jack CN2 of Main B/D

Re-soldering or change IC U1 and RNA1-17

Check the input/output of

Jack CNC1 of Main B/D Re-soldering or change IC U1

Change the panel

Change the Panel wire Check the Panel wire

41

Part Name Description Phenomena Failure cause

V B/D Vertical bar

V Dim Vertal gray

line

V L/D

Vertical color

line(light or

dark forever)

H B/D Horizontal

bar

H Dim Horizontal

gary line

TCP

H L/D

Horizontal

line(light or

dark forever)

Block Defect :TCP cracking or cracking

Dim or L/D :TCP Sunken

:TCP lead cracking

:ACF bonding short

:Awful environment and something electric enter into

LCD

:Mis-align between TCP and Panel

:Panel failure

:TCP failure

Failure Mode


Dot Defect Bright dot dark

dot in panel Incoming Inspection Standard

Polarizer

Bubble

Bladder in

Polarizer Bladder between Polarizer and top glass

Polarizer

ScratchPolarizer Scratch Tine or rigidity arose

Panel or Polarizer

F/M inside

Polarizer

Eye winker inside

Polarizer Eye winker inside Polarizer

Abnormal

Display Abnormal Display

Circuit

Flashing Bright and dark

display alternately

1.Chip lose action 2.IC ahort or jointiog bad 3.Pannel and vsc connect bad

42

Failure Mode


White

Screen

B/L normal, only

white screen

display

Black

Screen

B/L normal, only

Black screen

display

Maybe caused by surge current and EDS

FIIcker Crosstalk LCD Vcom imbalance

Abnormal

Color

Only color

abormal

Capacitance improper bring crosstalk inside LCD

panel

Circuit

Abnormal

Color

Only color

abnormal

1.Chip lose action 2. IC short or jointion bad 3.Pannel and vsc connect bad

Failure Mode


Mechanlcal

Nolse

When turn

panel,appear

cacophony

Caused by Mechanica noise of backlight unit

Ripple Connectric circle Causeed by between mechanism and pannel

B/L off B/L lose action *Connect badness between wire and electrode

B/L dark B/L brightness

darker than normal

*Connect badness Short between wire and electrode

B/L wire

damaged B/L wire damaged Operation abnormal or systemic noise

43

B/L wire

open Without backlight Operation abnormal or systemic noise

B/L shut

down

B/L shutdown in

sometime

Short bitween lamp housing and wire, Because

consume power too much

F/M

F/M in

B/L ,white,balck

Rotundity or

wirelike

F/M in B/L unit

Failure ModePart Name Description Phenomena Failure cause

Lightleakage

Brightness at bottom of LCM brighter than normal

B/L unit badness

UniformityB/L brightness asymmetric

Sheet in B/L unit is uneven Mechanlcalor B/L

Mount holeLack screw or screw damage

*Lack screw Screw damage

48

Sincere Forever

DYNEX SERVICE MANUAL - rtellason.comrtellason.com/manuals/Service manual DX-LDVD19-10A.pdf · 1...

Documents

Transcript of DYNEX SERVICE MANUAL - rtellason.comrtellason.com/manuals/Service manual DX-LDVD19-10A.pdf · 1...