Haier DX-LTDVD19-09 Schematic

DX-LTDVD19-09

@ (2008)(Haier Electronic Company Limited)

violation of law.

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

CONTENT

1. SPECIFICATIONS…………………………………………………………………… ……………….. ..3

2. WAINING……………………………………………………………………………………… ………… 4

3. LOCATION OF CONTROLS AND COMPONENTS……………………………………… ……..….. 6

3.1. Board Location……………………………….. ……………… ……………………… …….……..6

3.2 Main Board & AV Board……………………………….. …………………………………… …….7

3.3 Power Board……………………………….. ………………………………………………… ……9

3.4 LCD Panel…………………..……………………………….. ……………………………… ...….10

External Equipment Connections…………………………………………………………………..….11

5. OPERATION INSTRUCTIONS………………………………………………………………………….15

5.1 Front Panel Controls……………………………….. ……………………………………….15

5.2 Back Panel Controls……………………………….. ………….………..……. …………….16

5.3 Universal Remote Controller……………………………….. …..………………………….17

6. DISASSEMBLY INSTRUCTIONS……………………………………..…………….……………….18

6.1 Whole Machine………………………………………………...…………………….……….18

6.2 Support Stand Assembly……………………………………………..……... ……....……..19

6.3 Back Cabinet Assembly……………………………………..……….………………..…….20

6.4 Front Cabinet Assembly……………………………..………………………………..……..21

6.5 Miscellaneous Material Assembly………………………………….………………...…....… 21

7. MEASUREMENTS AND ADJUSTMENTS……………………………………………………….…25

8. WIRING CONNECTION DIAGRAM……………………………………………….. ………………32

9. TROUBLESHOOTING GUIDE…………………………………………………..…………....…...33

9.1. Simple check…………………………………………………………..……………….……...33

9.2. Power Supply Board failure check………………………………..……………………….……34

9.3. Main board failure check…………………………………………………………………….…. .35

9.4. Pannel failure ……………..………………………………………………………………...……37

10. MAINTENANCE……………………………………………………………………………...……39

11. CIRCUIT DIAGRAM…………………………………….….……… ……………………… …………. 40

1. Specification

Model DX-LTDVD19-09

Screen size 19inch

Aspect ratio 16:10

Resolution 1440*900

Response Time（ms)

Angel of view H:160/V:160

Color display 16,777,216

NO.of preset channels 181

OSD language English/Spanish/French

Color system note 1

Audio system note 2

Audio output

power(Built-in)(W)

Audio output

power(outer)(W)

Total power input（W）＜＝80W

Voltage range（V）

Power frequency（Hz）

Time of sleep

timer(MINS)

5/10/15/30/60/90/120/180/240

2×3W

AC120V

60Hz

Net weight(KG) 5

Gross weight(KG) 6.35

Net dimension(MM) 462*179.5*388.5

Packaged

dimension(MM)

Notes:

1.NTSC:

2. M standard: each channel bandwidth is 6 MHz and the frequency of audio is 4.5 MHz higher than the

frequency of video.

Standards Developed by National TV Standards Committee

522*203*438

2. Warning

WARNING

RISKELECTRIC SHOCK

DONOT OPEN

WARNING: To reduce the risk of electric shock don’t remove cover or back.

No user-serviceable parts inside refer service to qualified service personnel.

Safety of operators has been taken into consideration at the design and manufacture phase, but inappropriate operation may cause electric shock or fire. To prevent the product from being damaged, the following rules should be observed for the installation, use and maintenance of the product. Read the following safety instruction before starting the operation. The User Manual uses the following symbols to ensure a safe operation and preventany damage to operators or properties:

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 LITERATURE ACCOMPANYING THE APPLIANCE.

FC C STATEMENT

This equipment has been tested and found to comply with the limits for a Class B digital device,

pursuant to Part 15 of the FCC Rule. These limits are designed to provide reasonable protection

against harmful interference in a residential installation. This equipment generates, use and can radiate

radio frequency energy and, if not installed and used in accordance with the instructions, may cause

harmful interference to radio communications. However, there is no guarantee that interference with

not occur in a particular installation. If this equipment does cause harmful interference to radio or

television reception, which can be determined by turning the equipment off and on, the user is

encourage to try to correct the interference by one or more of the following measures:

*Reorient or relocate the receiving antenna.

*Increase the separation between the equipment and receiver.

*Connect the equipment into an outlet on a circuit different from that to which the receivers

connected.

*Consult the dealer or an experienced radio/TV technician for help.

This device compiles with Part 15 of the FCC Rules. Operation is subject to the following two

conditions: (1) This device may be not cause harmful interference, and (2) this device must accept any

interference received, including interference that may cause undesired operation.

FCC CAUTION:

To assure continued compliance and possible undesirable interference, the provided ferrite cores must

be used when connecting this plasma display to video equipment; and maintain at least 40cm spacing

to other peripheral device.

CANADIAN NOTICE:

This Class B digital apparatus compiles with Canadian ICES-003.

IMPORTANT SAFETY INSTRUCTIONS

Read all of the instructions before using this appliance. When using this appliance, always exercise basic safety precautions, including the following:

1) Save these Instructions ---the safety and operating instructions should be retained for future

reference.

2) All warning on the appliance and in the operating instructions should be followed.

3) Cleaning --- Unplug from the wall outlet before cleaning. Do not use liquid cleaners or aerosol

cleaners. Use only dry cloth for cleaning.

4) Attachments ---do not use attachments not recommended by the manufacturer as they may cause

hazards.

5)Water and moisture -- do not place this product near water, for example, near a bathtub, wash bowl,

kitchen sink, laundry tub, in a wet basement, or near a swimming pool.

6) Accessories ---do not place this unit on an unstable cart, stand, tripod, bracket, or table. Use only

with a cart, stand, tripod, bracket, or table recommend by the manufacture, or sold with the unit.

7) Ventilation ---Slots and openings in the cabinets and the back or bottom are provided for ventilation.

These openings must not be blocked. In a built in installation such a bookcase or rack do not install

product unless proper ventilation is provided.

8) Power Source ---this TV should be operated only from the type of power source indicated on the

rating label. If you are not sure of the type of power supply to your home, consult your appliance dealer

or local power company.

9) Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two

blades with one wider than the other. A grounding type plug has two blades and a third grounding prong.

The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your

outlet, consult an electrician for replacement of the obsolete outlet. To prevent electric shock, ensure

the grounding pin on the AC cord power plug is securely connected.

10) Power cord protection ---Power supply cords should be routed so that they are not likely to be

walked on or pinched by items placed upon or against them. Pay particular attention to cords or plugs,

convenience receptacle, and the point where they exit from the appliance.

11) Lighting precaution ---for added protection for this product during a lighting storm or when it is left

unattended for long period of time, unplug it from the wall outlet and disconnect the antenna or cable

system. This will prevent damage to the product due to lighting and power line surges.

12) Never push objects of any kind into this product through openings as they may touch dangerous

voltage point or short out parts that could result in a fire or electric shock. Avoid spilling liquid of any kind

on the product.

13)Servicing ---do not attempt to service the product by yourself, as opening or removing covers may

expose you to dangerous voltage or other hazards. Refer all servicing to authorized service personnel.

14) Unplug this unit from the wall outlet and refer servicing to qualified service personnel under the

following conditions:

a. When the power supply cord or plug is damaged or frayed.

b. If liquid has been spilled, or objects have been fallen into the unit.

c. If the unit has been exposed to rain or water.

d. If the unit does not operate normally by following the operating instructions. Adjust only those

controls that are covered by the operating instructions, as improper adjustment of other controls

may result in damage and will often require extensive work by a qualified technician to restore

the unit to its normal operation.

e. If the unit has been dropped or damaged in any way.

f. When the unit exhibits a distinct change in performance; this indicates a need for service.

15) Heat --- The product should be situated away heat source such as radiators, heat registers,

stoves, or other products (Including amplifiers) that product heat.

16) Overloading ---Do not overload wall outlets and extension cord as this can result in a risk of fire

or electric shock.

3. LOCATION OF CONTROLS AND COMPONENTS

3.1. Board Location

No. Parts number Description

A Board

B Board Power Board

C Board

3.2. Main Board & AV 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

Main board connector

Power connectors (CN3, CN5)

Pin number Signal name Pin number Signal name

1 +12V 1 +12V

2 +12V 2 GND

3 BL 3 GND

4 DIM 4 +5V

5 GND 5 STB

6 GND

7 SW

CN3 CN5

Notes:

CN3-Pin 3: Backlight on/off:

The system can turn on or turn off the backlight of TFT LCD Panel through the power supply unit path.

CN3-Pin 7: System power on / standby

System board will use this pin to control system power.

CN3-Pin 4: Control the luminance of backlight

The system can generate the PWN signal to control the strength of TFT LCD Panel’s backlight through

this connector.

Keypad and remote connector (CN2)

Speaker connector (CN1)

DVD VIDEO Connector: CN6

Pin number Signal name Description

1 GPIO GPIO 2 PB_IN PB1 IN 3 Y_IN Y1_IN 4 GND GND 5 PR_IN PR1 IN 6 GND GND 7 IR DVD IR

DVD AUDIO Connector: P1

Pin number Signal name Description

1 LI YPBPR1L_IN 2 RI YPBPR1R_IN 3 GND GND

Other connectors:

1, CN19 to Upgrade the program of MTK5380C (U13) AND FLASH (U17)

+3V3SB

U0RX U0TX

1 2 3 4

4x1 W/HOUSING

DIP4/W/H/P2.0

3.3. Power Board

3.3.1 Function Description:

Supply power for Main board, Panel.

3.3.2Connectordefinition

INPUT CONNECTOR (CN6)

CN10 Signal name

1 N

2 GND

3 GND

4 DIM

5 EN

6 +12V

7 +12V

3.4. LCD PANNEL.

AU（T190PW01）

3.4.1 Function Description:

Display the signal.

3.4.2 Connector definition

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 + Signal

9 A1N LVDS EVEN 1 - Signal

10 A1P LVDS EVEN 1 + Signal

11 A2N LVDS EVEN 2 - Signal

12 A2P LVDS EVEN 2 + Signal

13,14 GND Ground

15 CK1N LVDS EVEN Clock - Signal

16 CK1P LVDS EVEN Clock + Signal

17 A3N LVDS EVEN 3 - Signal

18 A3P LVDS EVEN 3 + Signal

19 A4N LVDS ODD 0 - Signal

20 A4P LVDS ODD 0 + Signal

21 A5N LVDS ODD 1 - Signal

22 A5P LVDS ODD 1 + Signal

23 A6N LVDS ODD 2 - Signal

24 A6P LVDS ODD 2 + Signal

25,26 GND Ground

27 CK2N LVDS ODD Clock - Signal

28 CK2P LVDS ODD Clock + Signal

29 A7N LVDS ODD 3 - Signal

30 A7P LVDS ODD 3+ Signal

CN1 (Header):S14B-PH-SM4-TB (D)(LF)(JST) or equivalent.

Pin No. Symnbol Description

7-12

VBL

GND

LVDS

EVEN

+5.0V Power input

Ground

LVDS EVEN Signal

19-24

LVDS

ODD

LVDS ODD Signal

4. External Equipment Connections

Accessories

Remote Control User GUIDE Battery

Antenna Connection

1、 Connect one end of a coaxial cable (not included) to the ANT IN jack on the back of your TV/DVD

combo, then connect the other end of the cable into the antenna or cable TV wall outlet.

2 、To improve picture quality from an antenna in a poor signal area,

install a signal amplifier.

3、 If you need to split the antenna signal to connect two TVs, install

a two-way splitter.

Choose Your Connection

There are several ways to connect your television, depending on the components you want to connect

and the quality of the signal you want to achieve. The following are examples of some different ways

to connect your TV with different input sources. Choose the connection which is best for you.

VCR connection

External Equipment Connections

5. OPERATION INSTRUCTIONS

Basal information

5.1 Front panel controls

5.2 Back panel controls

5.3 Universal Remote Controller

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