Haier HL24XD2 Schematic

23.6″ LCD TV Haier HL24XD2

Service

Horizontal Frequency

31~68 KHz

TABLE OF CONTENTS

Description Page Description Page

Table of Contents.......……....................................…........1

Important Safety Notice.......................................……......2

Revision List…………………………………………………3

1. General Specification.................................………........4

2. Operating Instructions…………………….……...….......6

2.1 The Use of Remote Control…….…………...…….......6

2.2 To Use the Menus…...………………….….………......7

2.3 Front Panel Control Knobs……………….………......12

2.4 How to Connect…….…………………….…..…….....13

3. Input/Output Specification…………....................…....14

4. Mechanical Instructions…………………….................16

5. Repair Flow Chart ……………………….…….…….....19

6. PCB Layout ………………..………………....…..........24

SAFETY NOTICE

ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS

6.1 Main Board…………………………...…….….......24

6.2 Power Board…..…………..………….…..…….......26

6.3 Key Board………………………..……..……….......29

6.4 IR Board…………………………..……….…….......29

7. Adjustment..............................................................30

8. Block Diagram.…….................................................31

9. Wiring Diagram.……...............................................32

10. Schematic Diagram………..……..………………...33

10.1 Main Board…………….…………………...….......33

10.2 Power Board………..…....…………...……….......43

10.3 Key Board……………….………….………….......45

10.4 IR Board……………………………….……….......46

11. Exploded View……………………….………….…...47

AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING

ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.

CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

Important Safety Notice

Proper service and repair is important to the safe, reliable operation of all Haier Company Equipment. The service

procedures recommended by Haier and described in this service manual are effective methods of performing

service operations. Some of these service operations require the use of tools specially designed for the purpose.

The special tools should be used when and as recommended.

It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in

order to minimize the risk of personal injury to service personnel. The possibility exists that improper service

methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE

NOT EXHAUSTIVE. Haier could not possibly know, evaluate and advise the service trade of all conceivable ways in

which service might be done or of the possible hazardous consequences of each way. Consequently, Haier has not

undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not

recommended by Haier must first satisfy himself thoroughly that neither his safety nor the safe operation of the

equipment will be jeopardized by the service method selected.

Hereafter throughout this manual, Haier Company will be referred to as Haier.

WARNING

Use of substitute replacement parts, which do not have the same, specified safety characteristics might create

shock, fire, or other hazards.

Under no circumstances should the original design be modified or altered without written permission from Haier.

Haier assumes no liability, express or implied, arising out of any unauthorized modification of design.

Servicer assumes all liability.

FOR PRODUCTS CONTAINING LASER:

DANGER-Invisible laser radiations when open AVOID DIRECT EXPOSURE TO BEAM.

CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may

result in hazardous radiation exposure.

CAUTION -The use of optical instruments with this product will increase eye hazard.

TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S

REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF

THIS SERVICE MANUAL.

Take care during handling the LCD module with backlight unit

-Must mount the module using mounting holes arranged in four corners.

-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.

-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to

the panel.

-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).

-Make certain that treatment person’s body is grounded through wristband.

-Do not leave the module in high temperature and in areas of high humidity for a long time.

-Avoid contact with water as it may a short circuit within the module.

-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may damage the panel.)

Revision List

Version Release Date Revision Instructions Model

A00 Apr.30,2010 Initial release E24AMZNK3WH3NN

1. General Specification

* This model complies with the specifications listed below. * Designs and specifications are subject to change without notice. * These models may not be compatible with features and/or specifications that may be added in the future.

Model No. HL19D2 HL24XD2 HL32D2 HL42XD2

DISPLAY

Viewable 18.5W" 23.6W" 31.5W" 42W"

Television System NTSC standard,ATSC standard (8-VSB, Clear-QAM)

VHF: 2 through 13 UHF: 14 through 69 Cable TV: Mild band (A - 8 through A - 1,A through I),

Channel Coverage

Tuner input (75Ω)

AV IN: AV/S-Video and L/R audio input

Super band (J through W), Hyper band (AA through ZZ,AAA, BBB), Ultra band (65 through 94, 100 through 125)

CONNECTIONS

PC IN: D-SUB and PC Audio (Headphone mini-jack)

Supported scan rate: 640x480@60/72/75Hz,720x400@70Hz,

800x600@56/60/72/75Hz,1024x768@60/70/75Hz, 1280x720@60Hz,1280x768@60Hz 1360x768@60Hz:For HL19D2 / HL32D2 only.

1280x1024@60Hz,1440x900@60Hz,1680x1050@60Hz

1920x1080@60Hz: For HL24XD2 / HL42XD2 only.

Rear Connectors Recommended: For HL19D2 / HL32D2: 1360x768

For HL24XD2 / HL42XD2: 1920x1080

Component Video and L/R Audio input

Supported resolution: 480i,480p,720p,1080i,1080p

HDMI input Supported scan rates: 480i, 480p, 720p, 1080i, 1080p

AV/S-Video input SPDIF

Side Connectors

HDMI HDMI HDMI 2 HDMI 2

Earphone Output USB PORT

AV/S-Video input SPDIF

Earphone Output USB PORT

AV/S-Video input SPDIF HDMI 1

Audio out Audio out AV IN 2

Earphone Output USB PORT

AV/S-Video input SPDIF HDMI 1

AV IN 2 Earphone Output USB PORT

Model No. HL19D2 HL24XD2 HL32D2 HL42XD2

WEIGHT & DIMENSIOIN

Dimensions 457.3 mm 572.2 mm 790.5 mm 1015.36 mm with Stand 324.8 mm 407.6 mm 569.1 mm 703.03 mm

(W x H x D) 171.29 mm 176.8 mm 239.6 mm 280.50 mm

Dimensions 457.3 mm 572.2 mm 790.5 mm 1015.36 mm without Stand 308 mm 372.8 mm 526.8 mm 654.67 mm

(W x H x D) 67.1 mm 65.4 mm 91.1 mm 97.10 mm

Weight with Stand 4.25 Kg 5.75 Kg 12.5 Kg 20.5 Kg

Weight without Stand and Base

VESA-compatible wall bracket 100 x 100 mm 100 x 100 mm 200 x 200 mm 400 x 200 mm

(W x H)

Screw type Metric 4 x 10 mm Metric 4 x 10 mm Metric 6 x 10 mm Metric 6 x 10 mm

3.85 Kg 5.4 Kg 10.6 Kg 17.6 Kg

WALL MOUNTING

POWER

Power Consumption 45W 70W 150W 250W

Standby <1W

Mains Power 120V~60Hz

Audio Power 3W + 3W 3W + 3W 10W + 10W 10W + 10W

Ambient Temperature

Supplied Accessories

English

5°C - 35°C

PACKAGE CONTENTS

TV unit x1 Base x1

Screws x 4 (for 32” only) Power cord x 1 Remote control x1 (with two size AAA alkaline batteries) User manual x1

FCC statement x1

Registration Card x1

2. Operating Instructions

2.1 The Use of Remote Control

Power

Press to power ON/OFF(standby) TV. (Note: 1. TV is never completely power off unless physically unplugged. 2. Press to turn on TV after the power on status, LED had changed to blue and stopped flashing.)

Video

Press repeatedly to choose S-Video/Composite source mode.

Comp

Press to choose Component source mode.

PC/HDMI

Press repeatedly to choose VGA or HDMI source mode.

Press to choose ATSC/NTSC TV source mode.

0 ~ 9 / – number Press to enter TV channel number to select channel (Press ‘-’ to choose the sub-channel).

PREV CH

Press to display the previous channel.

Sleep

Press to set the preset time to switch the TV to standby mode automatically (off / 5 / 10 / 15/ 30 / 60 / 90 / 120 / 180 /240 mins).

Freeze

Press to freeze the displayed picture.

MTS/SAP

Press to activate the NTSC TV sounds, such as: Stereo, SAP or Mono tone, and languages of DTV.

Wide

Press to choose the display aspect as: Normal, Zoom1, Wide, Zoom2, or HDMI PC mode.

Fav

Press "Fav" to open or toggle channel item in Favorite Channel List.

Source

Press repeatedly to choose the various input sources.

EPG

Press to display the Electronic Program Guide.

CH+ / CH -

Press + or - to browse through the TV channels.

Mute

Switch the sound ON/OFF.

Info

Press to show the information about the input source, TV channel, display resolution and current time.

VOL+ / VOL

Press + or - to adjust the volume.

Press to open or exit menu.

∧,∨,﹤,﹥, ENTER

Press to adjust the various function items on the menu.

Exit

Press to exit menu or OSD.

V-Chip

Press to lock Parental Control temporarily. (After setting the restricted table of MPAA or TV Rating.)

Video Adj

Provide video modes switching.

Audio Adj

Provide audio modes switching.

C. C.

Press repeatedly to change the closed caption type as CC On/CC Off/CC On With Mute.

2.2 To Use the Menus

1. Press the Menu button to display or close the main menu.

2. Use the Navigation Ring to move around to select, adjust or confirm an item in the OSD (On Screen Display) menu. Press the Menu button to enter the main OSD. Adjust the items including Video menu,Audio menu, Feature menu, Channel menu, and VGA menu. However, some function items in the menus may only be enabled in the particular source modes.

CHANNEL MENU

The Channel menu in TV mode shows as below.

1. Tuning Band: Select TV source signal from the Air (antenna) or Cable (CATV).

2. Channel Strength: Show the intensity of the received DTV signal.

3. Auto CH Search: Automatically scan all NTSC / ATSC TV channels and then store in the channel table. In channel scan process, the OSD can display the number of channels which had been found.

4. Add on CH Search: Add channels which are new found.

5. Channel List: Show the Channel List. User can edit (add/delete) the channel numbers.

6. Channel Labels: Show the NTSC / ATSC TV Channel Labels menu for user modifying channel labels specifically.

7. FAV Channel Setting: Show the Favorite Channel List. User can edit (add/delete) the favorite channels.

VIDEO MENU

The Video menu in most source modes shows as below. It provides several video adjustment items for user fine tuning the video display. Only in VGA source mode, the Video menu simply provides Picture mode, Color Temp, Backlight, Aspect Ratio, Preset items.

1. Picture Mode: Adjust the best picture appearance from selecting the preset value of Vivid, Standard, Eco, Movie, or Personal.

2. Brightness: Video brightness adjustment, the tuning range is 0 ~ 100.

3. Contrast: Video contrast adjustment, thetuning range is 0 ~ 100.

4. Sharpness: Video sharpness adjustment,the tuning range is 0 ~ 100.

5. Color: Video color chroma adjustment,the tuning range is 0 ~ 100.

6. Tint: Video tint adjustment, the tuning range is R50 ~ G50.

7. Color Temp: Three color temperature modes. (Normal / Warm / Cool)

8. Noise Reduction: Gives four NR effect degrees, such as: Low, Mid, High and Off.

9. Adaptive Contrast: Choose On or Off to adjust the gamma after analyzing the input signal automatically.

10. Backlight: Backlight strength adjustment,the tuning range is 0 ~ 30.

11. Aspect Ratio: Choose the display aspect: Normal, Zoom1, Wide, Zoom2, or HDMI PC mode.

12. Preset: Restore the default video settings.

AUDIO MENU

The Audio menu in TV mode shows as below. It provides audio adjustment for user to modify the audio setting. Audio language setting is only available with ATSC TV source, the option is disable under other source modes.

Sound Mode: Choose the audio mode: Personal, Music, or Speech.

2. Bass: Bass tone adjustment, the tuning range is 0 ~ 63. (The default state is enabled.)

3. Treble: Treble tone adjustment, the tuning range is 0 ~ 63. (The default state is enabled.)

4. Balance: Audio balance adjustment, the tuning range is L50 ~ R50.

5. Audio Source: Select the audio source from Mono, Stereo, or SAP. (This function works in ATV only.)

6. Audio Language: Change the audio language setting on ATSC TV programs. The number of the supported audio languages depends on the ATSC TV programs. (English / Français / Español)

7. SPDIF: Digital audio output format. Select from RAW and PCM. (This function works in DTV only.)

8. Speaker: Choose to turn on / off the TV internal speaker. The digital audio output signals and earphone output

signals will not be turned off even though the TV speaker is off. The default setting is On.

9. AVL: Choose On or Off to adjust volume to be consistent across programs and channels automatically.

10. Preset: Restore the default audio settings.

FEATURE MENU

The Feature menu in TV mode shows as below. This menu gives users the most flexibility to satisfy their generally demands. According to the various requirements in different source modes, certain features should be hidden (disable) on the menu. The detailed footnotes will be described clearly below.

1. Menu Language: Select the menu display language. (English / Français / Español)

2. Time: Set current time. The sub-menu includes Time Mode, Time Zone, and Daylight Savings.

[Time Mode] – Choose from Auto or Manual. [Time Zone] – Set current time zone. [Daylight Savings] – Set to On or Off.

3. Transparency: Adjust the transparency of the on-screen menu from range 0 to 10.

4. Password Setting: Change the 4-numeral parental control password. Three steps are

required for changing the password: Enter Old Password -> Enter New Password ->Confirm New Password. Note: This item is only available in TV, Composite and S-Video source modes. The default password is 『0 0 0 0』.

5. Parental Control: Provide the parental Control (V-chip) function setting. Before entering the Parental Control

sub-menu, user has to key in the password first. Enter the Parental Lock item, then the user can modify the restricted table about MPAA or TV Rating respectively. While exiting the sub-menu, the parental control function is working. The inhibitive channels or source signals can be unlock through key in the correct password. Note: This feature is only available in TV, Composite and S-Video source modes.(The default password is: 0 0 0 0.)

[Button Lock] – Select On or Off to lock or unlock the control buttons on the side panel of the TV. When this function enables, the control buttons on your TV will be locked and TV only can be controlled by remote control only.

[Block Unrated TV] – When Block Unrated TV is set to on, your TV will block unrated program. [USA Parental Locks] – Set the parental control level by MPAA or TV Rating. [Canadian Parental Locks] – Set the parental control level by English Rating or French Rating. [Open V-Chip] – Open V-Chip is an advanced V-Chip rating system for digital channels that are received.

The rating table will be updated by downloading the RRT5 data for blocking.

6. Closed Captions: Select a closed caption options. (Off / On / With Mute)

7. Analog Captions: Select an analog caption options. (CC 1-4 / TEXT 1-4)

8. Digital Captions: Select a digital caption options. (SERVICE 1-6)

9. Digital Captions Setup: Provide numerous options for setting the digital closed caption style in the sub-menu.

[Style] – Set to Automatic or Customer mode. If Custom mode is selected, user can modify the detail styles described below. The setting result will be shown immediately on the bottom of the submenu OSD. Note: This feature is only available in Digital TV (ATSC) mode.

[Size] – Digital closed caption font size, which can be set as Automatic, Small, Normal, or Large. [Font] – Digital closed caption font style,which can be chosen as Automatic, Default,or Font 1 ~ 7. [Text Color] – Automatic / White / Red / Green / Blue / Yellow / Magenta / Cyan / Black. [Text Opacity] – Automatic / Solid /Flashing / Transparent / Translucent. [Background Color] – Automatic /Black / White/ Red / Green / Blue / Yellow /Magenta / Cyan. [Background Opacity] – Automatic /Solid / Flashing / Transparent / Translucent. [Edge Effect] – Automatic / None/ Raised / Depressed / Uniform / Left / Shadow / Right Shadow. [Edge Color] – Automatic / Red / Green / Blue / Yellow / Magenta / Cyan / Black / White.

10. Input Labels: User can edit the input labels.

11. Component Setting: This option only shows and is available in component mode,which provides fine tuning

component display.

[Phase] – Adjust Picture Phase to reduce Horizontal-Line noise. The tuning range is from 0 to 31. [Preset] – Restore the default component setting values.

12. MultiMedia Menu: This option shows the photos in JPEG formats and plays the music in MP3 formats that stored

in a USB storage device.Note: File number is limited to 1000 files. JPEG sizes are limited as followed: For 19"/32": 10928x6114 For 24"/42": 15360x8640

There are two ways to enter JPEG Viewer and MP3 MusicBox interface:•• After plugging USB storage device into USB hub, Multimedia List menu will display.

• Select MultiMedia Menu in Feature Menu to choose JPEG Viewer or MP3 MusicBox. These two items are

activated only if the USB storage device is plugged into the USB hub.

[JPEG Viewer] – Press Menu to display control menu. Press Enter to enlarge the selected photo (orange frame) in browser.

• Image Delay: Set display time for each picture in slide show. There are three options: Fast, Slow, and Normal.

• Music On Slide Show: Enable background Music during slide show. It will play with the MP3 file sequence in

current folder repeatedly. Music On Slide Show item will be grayed out if there is no MP3 file in current folder.

• Start Slide Show: Enter Slide Show mode.

• Rotate Photo: Rotate selected picture. (0/90/180/270)

•• Back to Upper Folder: Return to the upper folder.

•• Back to Root Folder: Return to root folder.

•• Back To Browser: Return to Browser mode. (Photo page with control menu.)

•• Exit: Exit JPEG Viewer and return to original source. (Browser with Control menu.)

[MP3 MusicBox]

•• ListInfoBar (at the bottom): This part contains play list information as:

“Current Directory”, “Total File(s)”,“Total Folder(s)”, “Current Item” in current directory and Key Help Bar.

•• PlayList (on the right side): This part contains MP3 music files.

••ControlPanel (on the left side):

Bass, Treble, Balance, Volume: Adjust the audio tone. Mute Screen: This provides an option for enabling (On) or disabling (Off) auto turn-off backlight feature while

playing MP3 media. The setting status is valid in MP3 media player interface only. After setting to On state, backlight will be turned-off automatically after 10 seconds no any key pressed. Press any key to turn on the TV immediately; but if there’s no other keys pressed after 10 seconds, it will be turned-off again.

Preset: Resetting MP3 relative audio parameters to the default values. Exit MP3MusicBox: Exit MP3MusicBox interface.

13. Reset to Default: Restore all the default settings.

VGA MENU

This option only shows and is available in VGA mode, which provides several items for the VGA display fine tuning.

1. H-Position: Adjust the horizontal position of the picture. (0-40)

2. V-Position: Adjust the vertical position of the picture. (0-16)

3. Clock: Adjust picture clock to reduce Vertical-Line noise. (0-16)

4. Phase: Adjust picture phase to reduce Horizontal-Line noise. (0-31)

5. Auto Adjust: Adjust the settings automatically.

6. Preset: Restore the default VGA setting values.

2.3 Front Panel Control Knobs

1. VOL + VOL +: Press to increase the sound volume level.

2. VOL - VOL -: Press to decrease the sound volume level.

3. CH ▲ CH ▲: Press to select the next higher Programme number.

4. CH ▼ CH ▼: Press to select the next lower Programme number.

5. MENU Menu key: Press to open or exit the OSD (on-screen display) menu.

6. INPUT Input key: Press to select the input source.

POWER

Power key: Press to turn on / off (standby) the TV set. (Press to turn on TV after the power on status, LED had changed to the Blue colour and stopped flashing.)

2.4 How to Connect

1. HDMI – Connect the primary source for digital video such as a DVD multimedia player or set top box through this

all digital connector.

2. PC IN – Connect the video and audio cables from a computer here.

3. AV IN (AV/S-VIDEO) – Connect the input source for composite video devices, such as a VCR or video game. Use

the white and red connectors to connect the external audio from the same source. The signal being carried by the

S-Video cable and connector, if connected, will take priority over the Video RCA connector (yellow connector).

444 COMPONENT (Y/Pb/Pr with Audio L/R) – Connect the primary source for component video devices such as a

DVD Player or set top box here. Use red for Pr, blue for Pb, green for Y, red for right audio (R) and white for left

audio (L) inputs.

5. ANTENNA/CABLE DIGITAL/ANALOG – Connect to an antenna or digital cable (outof- the-wall, not from Cable

Box) for Digital TV.

6. SPDIF (Optical Digital Audio Out) – When a digital audio signal is associated with the input selected for viewing,

the digital audio will be available on this SPDIF connection to your home theater system.

7. USB PORT – Insert USB storage device to the USB port to view photos or listen to music.

8. Earphone Output – Connect to the headphones. When the headphone is inserted to the plug, all the speakers

will be muted.

Once your equipment is connected, use the following procedure to view the input signal:

Press the Source button on the remote control to select the relevant source to view. (ex: Press Comp

button to select “Component” if you have connected a video recorder to Component socket.)

3. Input/Output Specification

3.1 Input Signal Connector

D-SUB

Pin No. Description Pin No. Description

1 Red Video 9 No Pin

2 Green Video 10 Sync Ground

3 Blue Video 11 SDA(Remote Control)

4 SCL(Remote Control) 12 Serial Data for DDC

5 Ground 13 H. Sync

6 Red Ground 14 V. Sy n c

7 Green Ground 15 Serial Clock for DDC

8 Blue Ground

HDMI

Pin No. Description Pin No. Description

1 TMDS Data2+ 11 TMDS Clock Shield

2 TMDS Data2 shield 12 TMDS Clock-

3 TDMS Data2- 13 CEC

4 TMDS Data1+ 14 NC

5 TMDS Data1 shield 15 SCL

6 TMDS Data1- 16 SDA

7 TMDS Data0+ 17 DDC/CEC Ground

8 TMDS Data0 shield 18 +5V Power

9 TMDS Data0- 19 Hot Plug Detect

10 TMDS Clock+

+ 32 hidden pages