Схема и Сервис Мануал На Английском Haier Let32h320 Шасси Mt5310

Order No.

LCD TV

Model No.

Chassis

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 by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

Haier Group

2010 Qingdao Haier Electronics Co., Ltd.All rights reserved. Unauthorized copying and distribution is a violation of law.

SERVICE MANUAL Haier

WARNING

TV1107S001V0

MT5310

LET32H320LET42H320

1

Service Manual Model No.: LET32H320 LET42H320

CONTENTSChapter 1. General Information1-1. Document Information .............................................................31-2. General Guidelines...................................................................31-3. Important Notice .......................................................................3

1-3-1. Follow the regulations and warnings ..................................................... 31-3-2. Be careful to the electrical shock ........................................................... 31-3-3. Electro static discharge (ESD) ............................................................... 31-3-4. About lead free solder (PbF) .................................................................. 41-3-5. Use the genewing parts (speci ed parts) .............................................. 41-3-6 Safety check after repairment ................................................................. 41-3-7. Ordering Spare Parts ............................................................................. 61-3-8. Photo used in this manual ..................................................................... 6

1-4. How to Read this Service Manual ...........................................61-4-1. Using icons ............................................................................................ 6

Chapter 2. Specifi cation2-1. Specifi cation list .......................................................................82-2 External pictures (four faces)..................................................9Chapter 3. Disassemble and Assemble3-1 Remove the Stand ................................................................... 113-2. Remove the Back Cabinet ..................................................... 11 3-3. Remove the Terminal Bracke ............................................... 113-5 Remove the Mainboard ...........................................................123-7. Remove the Remote Control Board ......................................12Chapter 4. Location of Controls and Components4-1. Board Location .......................................................................134-2. Mainboard ...............................................................................154-3. Power Supply Board ..............................................................164-4. LCD Panel ...............................................................................17Chapter 5. Installation Instructions5-1 External Equipment Connections ..........................................205-2 CONNECTING YOUR TV .........................................................20


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Chapter 6. Operation Instructions6-1. Front Panel Controls ..............................................................226-2 Back Panel Controls ...............................................................226-3 Setting Up Your Remote Control ...........................................23Chapter 7. Electrical Parts7-1. Circuit Diagram.......................................................................247-2 . Wiring Connection Diagram .................................................39Chapter 8. Measurements and Adjustments8-1. Service Mode .........................................................................41

8-1-1.How to enter into Service Mode............................................................418-1-2.How to exit ............................................................................................41

8-2. Measurements and Adjustments ..........................................418-2-1. The Main Menu ....................................................................................418-2-2. General Setting ....................................................................................428-2-3. EEPROM Setting .................................................................................438-2-4. Software UpDate .................................................................................43

Chapter 9. Trouble shooting9-1. Simple check ..........................................................................449-2. Mainboard Failure Check ......................................................459-3. Pannel Failure .........................................................................52

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Chapter 1. General Information

1-1. Document Information

Document format: Adobe PDFAuthor: Zhao XinjieCompiler: Bao Qinghong

1-2. General Guidelines

When 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 Check2) Leakage Current Hot Check3) Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive

1-3. Important Notice

1-3-1. Follow the regulations and warnings

Most 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.

1-3-2. Be careful to the electrical shock

To prevent damage which might result in electric shock or re, do not expose this TV set to rain or excessive moisture. This TV must not be exposed to dripping or splashing water, and objects lled with liquid, such as vases, must not be placed on top of or above the TV.

1-3-3. Electro static discharge (ESD)

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such


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components commonly are called Electrostatically Sensitive (ES) Devices. The following techniques should be used to help reduce the incidence of component damage caused by electros static discharge (ESD).

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid-state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor "chip" components. The following techniques should be used to help reduce the ncidence of component damage caused by static by static electricity.

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

1-3-4. About lead free solder (PbF)

This product is manufactured using lead-free solder as a part of a movement within the consumer products industry at large to be environmentally responsible. Lead-free solder must be used in the servicing and repairing of this product.

1-3-5. Use the genewing parts (speci ed parts)

Special parts which have purposes of re retardant (resistors), high-quality sound (capacitors), low noise (resistors), etc. are used.

When replacing any of components, be sure to use only manufacture's speci ed parts shown in the parts list.

Safety Component

Components identi ed by mark have special characteristics important for safety.

1-3-6 Safety check after repairment

Con rm that the screws, parts and wiring which were removed in order to service are put in the original positions, or whether there are the positions 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.

General Servicing Precautions

5


1. Always unplug the receiver AC power cord from the AC power source before: a. Removing or reinstalling any component, circuit board module or any other receiver

assembly. b. Disconnecting or reconnecting any receiver electrical plug or other electrical connection. c. Connecting a test substitute in parallel with an electrolytic capacitor in the receiver.

CAUTION: A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard.

2. Test high voltage only by measuring it with an appropriate high voltage meter or other voltage measuring device (DVM, FETVOM, etc) equipped with a suitable high voltage probe. Do not test high voltage by "drawing an arc".

3. Do not spray chemicals on or near this receiver or any of its assemblies.

4. Unless specified otherwise in this service manual, clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable non-abrasive applicator; 10% (by volume) Acetone and 90% (by volume) isopropyl alcohol (90%-99% strength).

CAUTION: This is a ammable mixture. Unless speci ed otherwise in this service manual, lubrication of contacts is not required. Capacitors may result in an explosion hazard.

5. Do not defeat any plug/socket B+ voltage interlocks with which receivers covered by this service manual might be equipped.

6. Do not apply AC power to this instrument and/or any of its electrical assemblies unless all solid-state device heat sinks are correctly installed.

7. Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead.

Always remove the test receiver ground lead last. Capacitors may result in an explosion hazard.

8. Use with this receiver only the test xtures speci ed in this service manual.

CAUTION: Do not connect the test xture ground strap to any heat sink in this receiver.

9. Remove the antenna terminal on TV and turn on the TV.

10. Insulation resistance between the cord plug terminals and the eternal exposure metal should be more than Mohm by using the 500V insulation resistance meter.

11. 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.


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3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an anti-static type solder removal device. Some solder removal devices not classi ed as "anti-static" can generate electrical charges suf cient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it.(Most replacement ES devices are packaged with leads electrically shorted together by

conductive foam, aluminum foil or comparable conductive material).

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed.

CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted oor can generate static electricity suf cient to damage an ES device.)

1-3-7. Ordering Spare Parts

Please include the following informations when you order parts. (Particularly the Version letter)

1. Model number, serial number and software versionThe model number and serial number can be found on the back cover of each product. Software

version can be found in the Spare Parts List.

2. Spare part No. and descriptionSpare part No. and description can be found in the Spare Parts List.

1-3-8. Photo used in this manual

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

1-4. How to Read this Service Manual

1-4-1. Using icons:Icons are used to attract the attention of the reader to speci c 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.

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

manipulation, 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 nd additional information on a speci c topic.


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Model LET32H320 LET42H320Screen Size 32" 42"Aspect Ratio 16:9 16:9Resolution 1920x1080 1920x1080Response Time (ms) 8 (GRAY TO GRAY) 8 (GRAY TO GRAY)Angel of View H:178, V:178 H:178, V:178Color Display 16.7M 16.7MNo. of Preset Channels 100 100OSD Language English,France etc. English,France etc.Color System PAL/SECAM PAL/SECAMAudio System DK, BG, I, M, L DK, BG, I, M, LAudio Output Power (Built-in) (W) 8W2 8W2Audio Output Power (outer) (W) No NoTotal Power Input (W) 80W 130WVoltage Range (V) AC150V~240V AC150V~240VPower Frequency (Hz) 50~60Hz 50~60HzTime of Sleep Timer (MINS) 120Min 120MinNet Weight (KG) 6.8 11.5Gross Weight (KG) 8.5 14.5Net Dimension (MM) 782X160X557 1014280697

Packaged Dimension (MM) 1000135635 1282185752

Chapter 2. Specifi cation2-1. Specifi cation list

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2-2 External pictures (four faces)

Front Side

Left Side


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Right Side

Back Side

Chapter 3. Disassemble and Assemble

1. Lay down the TV set .2. Remove the screw from the stand which is

indicated with circle in the picture above.3. Remove the stand

3-2. Remove the Back Cabinet

1.Remove the two screws indicated with circle.2.Remove all pins around the Cabinet.3.Carefully raise the Back Cabinet from

bottom.

3-3. Remove the Terminal Bracket3-1 Remove the StandRemove the screws indicated by the red circles in the picture.

LET32H320

LET42H320

3-4. Remove the Power Supply Module

Remove the screws indicated by the red circles in below picture.

LET32H320

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3-7. Remove the Remote Control Board

1. Remove the one screw indicated with circle.2. Remove the Remote Control Board.

3-6. Remove the KEY Board

Remove the Key board indicated by red circles in below picture.

3-8. Remove the Speaker

Remove the screws indicated by the red circles in below picture. Take out the speakers.

3-5 Remove the Mainboard

1. Remove the screws indicated with circle.2. Remove the Mainbord and the LED Driver

Board.

LET42H320

LET32H320

LET42H320 LET32H320

LET42H320


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LET32H320 LET42H320

Chapter 4. Location of Controls and Components

4-1. Board Location

LET32H320

No. Parts number Description

A Board DH1HD1E0200M Mainboard(0090804469)

B Board 0094002488 Power Supply Board

C Panel 0094002883DA LCD Panel

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LET42H320

No. Parts number Description

A Board DH1GL2E0200M Mainboard(0090728289)

B Board 0094001855A Power Supply Board

C Panel 0094001903DB LCD Panel


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Key Board connector J15Pin number Signal name

1 GND2 KEY13 KEY04 3.3VS

4-2. Mainboard

Speaker connector J10Pin number Signal name

1 LOUT+2 LOUT-3 ROUT+4 ROUT-

Mainboard power supply connector J1

Pin number Signal name1 12V2 12V3 GND4 12V5 GND6 GND7 5VS8 ADJ9 GND

10 PW

11 NC12 ON/OFF

Remote control connector J7Pin number Signal name

1 5VS2 IR3 LED_R4 LED_G5 GND

Connector Defi nition

Eye guide connector J17Pin number Signal name

1 3V32 GND3 SCL4 SDA

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LET32H320 LET42H320

LED light connector J700Pin number Signal name

1 LED_R2 LED_G3 GND

Remote control connector CN23Pin number Signal name

1 5VS2 IR3 I/O4 3D5 GND

9 SDA8 SCL7 GND6 3.3V

4-3. Power Supply Board

CON1 is the Power cord connector


4-4. LCD Panel

24V connector CON3Pin number Signal name

1 +24V2 +24V3 +24V4 +24V5 +24V6 GND7 GND8 GND9 GND

10 GND11 NC12 BL-ON/OFF13 E-PWM14 GND

LET32H320

LET42H320Mainboard power supply connector CON2

Pin number Signal name1 12V2 12V3 GND4 12V5 GND6 GND7 5VS8 ADJ9 GND

10 PW11 NC12 ON/OFF


LET32H320

LET42H320


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LET32H320

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LET42H320


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Chapter 5. Installation Instructions

5-1 External Equipment Connections

ANTENNA CONNECTION

Connect your aerial to the back of the TV into the ANTENNA IN socket.

IMPROVE YOUR SIGNAL

To improve picture quality in a poor signal area, use a signal ampli er (not supplied).

5-2 CONNECTING YOUR TV

Remote Control Batteries

Accessories

User Manual

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CONNECT A DVD PLAYER TO YOUR TV

Connect the DVD video outputs (Y, Pb, Pr) to the COMPONENT (Y, Pb, Pr) IN socket on your TV.1 Turn on the DVD player and insert a DVD.2 Press the button to select .3 Refer to the DVD player user guide for operating instructions.

CONNECT A DVD PLAYER OR VCR TO YOUR TV

This is the way for connectting a DVD player or VCR to your TV. Make sure that both the TV and DVD player or VCR are switched off before you connect them.1 Connect the AV DVD/VCR outputs to the AV IN socket on your TV.2 Press the SOURCE button on the TV to set the video input mode to AV.

CONNECT YOUR PC TO THE TV

You can use your TV as a monitor for your personal computer by connecting it with a VGA cable (not supplied).1 Read your computer user guide and check it has a VGA connector.2 Turn the power off on your TV and PC.3 onnect a D type 15-pin VGA interface cable to the VGA video interface connector on the PC.

Connect the other end of the cable to the PC interface connector on the TV. Tighten the screws on the VGA connectors and connect the audio cable (not supplied) to the audio input socket on the back of the TV.4 Turn on the power of the TV rstly and then the PC.5 Press the button on the TV or TV remote control to set the video input mode to VGA.6 Once the image shows, if there is noise present, change the VGA mode to another resolution,

change the refresh rate to another rate or adjust the brightness and contrast on the menu until the picture is clear.

DVD

SCART INPUT

1 Connect the scart lead from the external device (DVD player, Set-top box or games console) to the TV scart socket.2 Press the SOURCE button to select SCART mode.3 Press the PLAY button on the external device.

HDMI input

1 Connect the cable from the HDMI device to the TV HDMI socket.2 Press the SOURCE button to select HDMI mode.3 Refer to the HDMI device user guide for how to operate.


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Chapter 6. Operation Instructions6-1. Front Panel Controls

6-2 Back Panel Controls

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6-3 Setting Up Your Remote Control


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Chapter 7. Electrical Parts7-1. Circuit Diagram

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24

25



26

27



28

29



30

31



32

33



34

35



36


37


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7-3 . Wiring Connection DiagramLET32H320

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LET42H320


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Chapter 8. Measurements and Adjustments

8-1. Service Mode

8-1-1.How to enter into Service Mode

The way to the factory mode menu:Step 1: Press Menu,Step 2: Input 8893,Step 3: Press OKSystem will be into the factory mode menu when 3 steps above are done.

8-1-2.How to exitIf you want to exit this factory menu, please press the button Exit on the remote.

8-2. Measurements and Adjustments

8-2-1. The Main Menu

In factory mode menu,press up/down button to choose the up/down item,press left/right button to the submenu,press "OK"button to af rm .press MENU button go to the next page.

MT5310 Factory Menu

This page is general function setting

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8-2-2. General Setting

Picture ModeThis page is software version

This page is control the sound effect

Color MODEThis page is control the Color Mode.

Picture MODEThis page is control the picture Mode.


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8-2-3. EEPROM Setting

RESET ALL is to clean up Eeprom data and it will make the TV come back to the default mode

8-2-4. Software UpDate

In this page , you just consider the software update function.Plug USB into the USB port ,select opposite software press "right button ".

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Chapter 9. Trouble shooting

9-1. Simple check

No picture/ No sound

Verify if the television is properly pluggedVerify if the television is properly supplied powerVerify if electricity is available.

Blank screen

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

No sound

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

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

No picture in some channelVerify 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 adjust.

Spots with some or all picturesVerify if the antennal is correctly connected.Verify if the antennal is in good condition.Make ne 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.


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9-2. Mainboard Failure Check

1 Power supply trouble

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2 Display trouble(exceptional screen)


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3 Display trouble(white screen)

47


4 Display trouble(black screen)


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5.Audio trouble(No sound)

49


6 PC no signal or abnormal picture


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7 HDMI problem

8 USB problem

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9-3. Pannel Failure

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56

Sincere Forever

Haier GroupHaier Industrial Park, No.1, Haier Road

266101, Qingdao, Chinahttp://www.haier.com

Printed in China

Схема и Сервис Мануал На Английском Haier Let32h320 Шасси Mt5310

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Transcript of Схема и Сервис Мануал На Английском Haier Let32h320 Шасси Mt5310