Haier HL42B-B User manual

Brand: Haier

Model: HL42B-B

Category: TVs & monitors

Type: User manual

HL42B-B

(Chassis:MTK5371)

Order NO.WH070625S001V0

@(2007)(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. WAINING……………….……………………………………………………………………..3

2. SPECIFICATIONS…………………………………………………………………………... 6

3. LOCATION OF CONTROLS AND COMPONENTS…………………………………….. 7

3.1.Board Location……………………………….. ………………………………….…….7

3.2 Main Board…………….……………………………….. ……………………………...7

3.3 Power Board……………………………….. ………………………………………….11

3.5 LCD Panel……………………………….. …………………………………………….12

4. INSTALLATION INSTRUCTIONS………………………………………………………….15

4.1 External Equipment Connections………………………………….. ………………....15

4.2 HDMI Connections……………………………….. …………………………………….19

5. OPERATION INSTRUCTIONS……………………………………………………………..21

5.1 Front Panel Controls……………………………….. …………………………………..21

5.2 Back Panel Controls……………………………….. ………….………..……………...22

5.3 Universal Remote Controller……………………………….. …..……………………..22

6. DISASSEMBLY INSTRUCTIONS……………………………………..…………………...24

6.1 Whole Machine………………………………………………...………………………...25

6.2 Base Subassembly……………………………………………..…….………………....26

6.3 Back Subassembly…………………………………………..……….………………....27

6.4 Screen bracket Subassembly……………………………..…………………………...28

6.5 Front frame Subassembly…………………………………………….………………...29

6.6 Wire Subassembly…………………………………………………………………….…30

7. MEASUREMENTS AND ADJUSTMENTS……………………………………………..….31

8. BLOCK DIAGRAM AND CIRCUIT DIAGRAM…………………………………………….35

8.1 Block Diagram…………………………………………………………………………...35

8.2 Circuit Diagram……………………………………………………………………….….35

9. WIRING CONNECTION DIAGRAM………………………………………………………..53

10. TROUBLESHOOTING GUIDE…………………………………………………..………...53

10.1. Simple check…………………………………………………………..………….....53

10.2. PSU failure check…………………………………………………..…………….….57

10.5. Panel failure ……………..…………………………………………………………..58

1.Warning

WARNING

RISKELECTRIC SHOCK

DONOT OPEN

WARNING:To reduce the risk of electric shick 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 prevent 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.

FCC STATEMEN

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.

MAINTENANCE

To remove dirt or dust, wipe the cabinet with a soft, dry, lint-free cloth. Please be sure not to use a wet

cloth.

Cleaning the Screen

Early malfunctions can be prevented. Careful and regular cleaning can extend the amount of time you

will have

your new TV. Be sure to turn the power off and unplug the power cord before you begin any cleaning.

1. Here`s a great way to keep the dust off your screen for a while. Wet a soft cloth in a mixture of

lukewarm water

and a little fabric softener or dish washing detergent. Wring the cloth until it`s almost dry, and then use it

wipe the screen.

2. Make sure the excess water is off the screen, and then let it air-dry before you turn on your TV.

Cleaning the Cabinet

Extended Absence

If you expect to leave your TV dormant for a long time (such as a vacation), it`s a good idea to unplug

the power cord to protect against possible damage from lightning or power surges.

2. Specification

Model

Screen size

inch

Aspect ratio 16:9

Resolution 1366x768

Response Time ms)

8(GRAY TO GRAY)

Angel of view 178o

Color display 16777216

NO.of preset channels 181

OSD language English

Color system NTSC/ATSC

Audio system

Audio output power(Built-in)(W) 10W×2

Audio output power(outer)(W) YES

Total power input W

240W

Voltage range V

AC150V~AC240V

Power frequency Hz

50~60Hz

Time of sleep timer(MINS) 120Min

Net weight(KG) 57

Gross weight(KG) 66

Net dimension(MM) 42*4 7/8*29 7/8

Packaged dimension(MM)

3. LOCATION OF CONTROLS AND COMPONENTS

3.1.Board Location

No. Parts number Description

A Board Power Board

B Board Main Board

3.2. Main Board

3.2.1 Function Description:

Mian Board

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

Signal flowing chart

3.2.2 Connector definition

Main board connector

Power connector(CN26)

IR connector (CN2)

Key connector(CN28)

Backlight control connector(CN22)

LVDS Signal connector(CN23)

Pin number Signal name Description

1 ON/OFF Control the power of system

2 GND Ground

3 5VSB Power of TV standby

4 GND Ground

5 GND Ground

6 12V Power of system

7 12V Power of system

Pin number Signal name Description

1 5V Supply the Power of bright and IR receiver

2 IR Receive IR signal

3 G Show green when TV standby

4 B Show blue when TV working

5 GND Ground

6 NC NC

Pin number Signal name Description

1 GND Ground

2 AD0 Control Power,CH+,CH-

3 AD1 Control Menu,V+,V-,INPUT

Pin number Signal name Description

1 BKANJ Control the backlight of pannel

2 BKEN The system turn on or turn off the backlight of TFT LCD

Panel through the power supply unit path.

3 GND GND

4 5V Not use

Pin number Signal name Pin number Signal name Pin number Signal name

1 LVDS VDD 9 Not use 17 A1P

Notes:

Pin 16 is an option for DISM or LG format(LG=”GND” or “open” DISM=”High”),OUT TV is LG format

So Pin 16 is low.

AMP connector(CN20)

Speaker connector(CN21)

2 LVDS VDD 10 Not use 18 A1N

3 LVDS VDD 11 Not use 19 A2P

4 LVDS VDD 12 Not use 20 A2N

5 Not use 13 A0P 21 GND

6 Not use 14 A0N 22 GND

7 GND 15 GND 23 CK1P

8 GND 16 LVDS_SEL 24 CK1N

Pin number Signal name

25 A3P

26 A3N

27 GND

28 GND

29 Not use

30 Not use

Pin number Signal name Description

1 18V Power of Audio power amp

2 18V Power of Audio power amp

3 GND Ground

4 GND Ground

Pin number Signal name

1 L-

2 L+

3 R-

4 R+

Side AV connector(CN6)

Headphone wire connector(CN31)

Download connector(CN27)

3.3 Power Board

3.3.1 Function Description:

Supply power for Main board,Panel and DC/DC power board

Pin number Signal name

1 AVR

2 GND

3 AVL

4 GND

5 Video

Pin number Signal name Description

1 HPOUTL

2 HPDET The detect pin of headphone. The pin is high,when HP insert

HP terminal,or else It is low.

3 HPOUTR Ground

Pin number Signal name Description

1 3.3V Power the I2C

2 UORX Receiv signal from download tool

3 UOTX Send signal from download tool

4 GND Ground

3.3.2 Connector definition

CONNECTOR (CON2)

CONNECTOR (CON6)

CONNECTOR (CON4)

3.5. LCD PANEL.

3.5.1 Function Description:

Display the signal.

3.5.2 Connector definition

CON2 Signal name

1 24V

2 24V

3 24V

4 24V

5 24V

6 GND

7 GND

8 GND

9 GND

10 GND

CON6 Signal name

1-2 16.5V

3-4 GND

CON4 Signal name

1 ON/OFF

2 GND

3 5VSB

4 GND

5 GND

6 12V

Pin No Symbol Description Note

1 NC No Connection (3)

2 NC No Connection (3)

3 NC No Connection (3)

4 GND Ground

5 RX0- Negative transmission data of pixel 0

6 RX0+ Positive transmission data of pixel 0

7 GND Ground

8 RX1- Negative transmission data of pixel 1

9 RX1+ Positive transmission data of pixel 1

10 GND Ground

11 RX2- Negative transmission data of pixel 2

12 RX2+ Positive transmission data of pixel 2

13 GND Ground

14 RXCLK- Negative of clock

15 RXCLK+ Positive of clock

16 GND Ground

17 RX3- Negative transmission data of pixel 3

18 RX3+ Positive transmission data of pixel 3

19 GND Ground

20 NC No Connection

21 HND Select LVDS data format (2)

22 HND No Connection (3)

23 HND Ground

24 HND Ground

25 HND Ground

26 VCC Power Supply :+5V

27 VCC Power Supply :+5V

28 VCC Power Supply :+5V

29 VCC Power Supply :+5V

30 VCC Power Supply :+5V

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

Pin No. Symbol Description

VBL

+24V Power input

GND

Ground

11 ERR Normal(GND)

Abnormal(Open collector)

12 BLON BL ON/OFF

13 I_PWM Internal PWM Control

14 E_PWM External PWM Control

Notice:

#PIN 13: Analog Dimming Control (Use Pin 13) : 0v-3.3v and Pin 14 must open.

#PIN 14:PWM Dimming Control (Use Pin 14):Pin 13 must open.

#PIN 13(I_PWM) and Pin 14(E_PWM) can not open in same period.

4. INSTALLATION INSTRUCTIONS

4.1 External Equipment Connections

Accessories

Remote Control User Manual Battery Power cable

Antenna Connection

Generally speaking, to enjoy a clearer picture, we recommend that you use a CATV system or an

outdoor antenna . location and antenna positioning

■ To improve the picture quality in a poor signal area,

please purchase a signal amplifier and install properly.

■ If the antenna needs to be split for two TV`s, install a “2-

Way Signal Splitter” in the connections.

■ If the antenna is not installed properly, contact your dealer

for assistance.

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

To avoid picture noise (interference), leave an adequate distance

between the VCR and TV

Connection Option 1

Set VCR output switch to channel 3 or 4 and

then tune the TV to the same channel number.

Connection Option 2

1. Connect the audio and video cables from the

VCR's output jacks to the TV input jacks, as

shown in the figure.

When connecting the TV to VCR, match the

jack colors (Video = yellow, Audio Left = white, and Audio Right = red).If

you connect an S-VIDEO output from VCR to the S-VIDEO input, the

picture quality is improved; compared to connecting a regular VCR to the Video input.

2. Insert a video tape into the VCR and press PLAY on the VCR. (Refer to the VCR owner’s manual.)

3. Select the input source with using the INPUT button on the remote control, and then press ▲/▼ button to select the

source,press the ►button to confirm.

External Equipment Connections

External A/V Source Setup

How to connect

Connect the audio and video cables from the external equipment's

output jacks to the TV input jacks, as shown in the figure.

When connecting the TV to external equipment, match the

jack colors (Video = yellow, Audio Left = white, and Audio

Right = red).

How to use

1. Select the input source with using the INPUT button on

the remote control.

2. Press the ?/ ?button to select the desired source.

3. Press the ok button to confirm

2. Operate the corresponding external equipment.

How to connect

1. Connect the DVD video outputs (Y, Pb/Cb, Pr/Cr) to the Y, Pb, Pr

jacks on the TV and connect the DVD audio outputs to the YPbPr

Audio IN jacks on the TV, as shown in the figure.

2. If your DVD only has an S-VIDEO output jack, connect this to

the S-VIDEO input on the TV. as shown in the figure.

NOTE: If your DVD player does not have component video output,

use S-Video.

How to use

S-Video

CVBS

S-Video/CVBS

Audio In

RL V

AV O UT

R INPUT

Video Game Set

Camcorder

S-Video

CVBS

S-Video/CVBS

Audio In

RL V

AV O UT

R INPUT

Pr Pb

DVI Audio IN

YPbPr

Audio In

Headp hone

out

S-Video

CVBS

S-Video/CVBS

Audio In

1. Turn on the DVD player, insert a DVD.

2. Use the INPUT button on the remote control to select YPbPr mode.

3. Press Play button on external equipment for program play.

4. Refer to the DVD player's manual for operating instructions.

■ Component Input ports

To get better picture quality, connect a DVD player to the

Component input ports as shown below.

Component ports on the TV Y Pb Pr

Video output ports on DVD player

B-Y

R-Y

DTV connection

This TV can receive Digital Over-the-air/Cable signals without an external digital set-top box. However,

if you do receive Digital

signals from a digital set-top box or other digital external device, refer to the figure as shown below.

This TV supports HDCP (High-bandwidth Digital Contents Protection) protocol for Digital Contents

(480p,720p,1080i).

How to connect

Use the TV`s (Y, PB, PR) , VGA or HDMI jack for video

connections, depending on your set-top box connector.

Then, make the corresponding audio connections.

How to use

1. Turn on the digital set-top box. (Refer to the owner`s

manual for the digital set-top box.)

2. Use INPUT on the remote control to select YPbPr, VGA,

or HDMI source.

Digital Set-top Box

Digital Audio Output

Send the TV`s audio to external audio equipment (stereo system) via

the Digital Audio Output (Optical) port.

How to connect

1. Connect one end of an optical cable to the TV Digital Audio

(Optical) Output port.

2. Connect the other end of the optical cable to the digital audio (optical)

input on the audio equipment.

See the external audio equipment instruction manual for operation.

Note: When connecting with external audio equipments, such as

Signal YPbPr HDMI/DM

480i Yes Yes

480p Yes Yes

720p Yes Yes

1080i Yes Yes

Audio In

Pr Pb

DVI Audio IN

HDMI

Optical

YPbPr

udio In

Headphone

out

HDMI

Optical

YPbPr

udio In

Headphone

out

amplificatory or speakers, please turn the TV speakers off.

Caution: Do not look into the optical output port.

Looking at the laser beam may damage

your vision.

PC Connection

How to connect

1. To get the best picture quality, adjust the PC graphics card to 1024x768 .

2. Use the TV`s PC or DVI (Digital Visual Interface) Audio IN port for video connections, depending on

your PC connector.

■ If the graphic card on the PC does not output analog and digital RGB simultaneously, connect only

one of either VGA IN or DVI IN to display the PC on the TV.

■ If the graphic card on the PC does output analog and digital RGB simultaneously, set the TV to

either VGA or DVI; (the other mode is set to Plug and Play automatically by the TV.)

3. Then, make the corresponding audio connection. If using a sound card, adjust the PC sound as

required.

How to use

1. Turn on the PC and the TV.

2. Turn on the display by pressing the POWER button on the TV's remote control.

3. Use INPUT on the remote control to select VGA or HDMI source.

4. Check the image on your TV. There may be noise associated with the resolution, vertical pattern,

contrast or brightness in PC mode. If noise is present, change the PC 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. If the refresh rate of the PC graphic card can not be changed, change the PC graphic

card or consult the manufacturer of the PC graphic card.

NOTES:

1 Use a DVI cable.

2 Avoid keeping a fixed image on the TV's screen for a long period of time. The fixed image may

become permanently imprinted on the screen.

3 The synchronization input form for Horizontal and Vertical frequencies is separate.

Resolution

Frame

frequency

(Hz)

VGA

SVGA

XGA

64 0 * 4 8 0 6 0 H z

80 0 * 6 0 0 6 0 H z / 7 5 H z

1024 *768

60 Hz

Mode

Resolution

75 Hz

85 Hz

4.2 HDMI CINNECTIONS

When the source device(DVD player or Set Top Box) supports HDM

How To Connect

1. Connect the source device to HDMI port of this TV with an HDMI cable(not supplied with this

product).

2. No separated audio connection is necessary.

How To Use

If the source device supports Auto HDMI function, the output resolution of the source device will be

automatically

set to 1280x720p.

If the source device does not support Auto HDMI, you need to set the output resolution appropriately.

To get the best picture quality, adjust the output resolution of the source device to 1280x720p.

Select HDMI input source in input source option of Select Main source menu.

When the source device(DVD player or Set Top Box) supports DVI

How To Connect

1. Connect the source device to HDMI port of this TV with a HDMI-to-DVI cable(not supplied with this

product).

2. A separated audio connection is necessary.

3. If the source device has an analog audio output connector, connect the source device audio output to

DVI Audio

In port located on the

left side of HDMI port.

How To Use

If the source device supports Auto DVI function, the output resolution of the source device will be

automatically

set to 1280x720p.

If the source device does not support Auto DVI, you need to set the output resolution appropriately.

To get the best picture quality, adjust the output resolution of the source device to 1280x720p.

Press the INPUT button to select HDMI input source in input source option of Select Main source menu.

Installation

Cable sample

HDMI Cable

(not supplied with the product)

Connecting Headphones

You can connect a set of headphones to your set if you wish to watch a

TV programmer without disturbing the other people in the room.

Plug a set of headphones into the 3.5mm

mini-jack socket on the rear panel of the set.

Note

Prolonged use of headphones at a high volume

may damage your hearing.

You will not receive sound from the speakers

when you connect headphones to the system.

Power source

TO USE AC POWER SOURCE

Use the AC polarized line cord provided for operation on AC.

Insert the AC cord plug into a standard polarized AC outlet.

NOTES:

Never connect the AC line cord plug to other than the specified voltage.

Use the attached power cord only.

If the polarized AC cord does not fit into a non-polarized AC outlet,

do not attempt to file or cut the blade. It is the user`s responsibility to have an

electrician replace the obsolete outlet.

If you cause a static discharge when touching the unit and the unit fails to

function, simply unplug the unit from the AC outlet and plug it back in. The unit

should return to normal operation.

5. OPERATION INSTRUCTIONS

5.1 Front panel controls

HDMI to DVI Cable

( not supplied with the product)

Analog Audio Cable

(Stereo to RCA type)

(not supplied with the product)

YPbPr

Audi o In

Headphone

out

S- VIDEO

Polarized AC Cord Plug

AC Outlet

Wider Hole

and Blade

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Haier HL42B-B User manual

Brand: Haier

Model: HL42B-B

Category: TVs & monitors

Type: User manual

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Haier HL42B-B User manual

Haier HL42B-B User manual

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