Haier HL42XD1 Schematic

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42 LCD TV

Haier HL42XD1

Service

			Horizontal Frequency
			31~68 kHz
	TABLE OF CONTENTS
Description	Page	Description	Page
Table of Contents........……...................................…........1		6.3 Inverter Board……..…...……..…………..…….......28
Important Safety Notice.......................................……......2		6.4 Key Board………………………..……..……….......28
Revision List…………………………………………………3		6.5 IR Board…………………………..……….…….......29
1. General Specification.................................………........4		7. Adjustment..............................................................	30
2. Operating Instructions…………………….……...….......5		8. Block Diagram.…….................................................33
2.1 The Use of Remote Control…….…………...…….......5		9. Wiring Diagram.……...............................................34
2.2 To Use the Menu…...…………………….…………......6		10. Schematic Diagram………..……..………………...35
2.3 How to Connect…….…………………….…..…….....11		10.1 Main Board…………….…………………...….......35
2.4 Front Panel Control Knobs……………….………......12		10.2 Power Board…..………....…………...……….......47
3. Input/Output Specification…………....................…....13		10.3 Inverter Board…..…..…....…………...……….......52
4. Mechanical Instructions…………………….................15		10.4 Key Board……………….………….………….......53
5. Repair Flow Chart ……………………….…….…….....19		10.5 IR Board……………………………….……….......54
6. PCB Layout ………………..………………....…..........23		11. Exploded View……………………….………….…...55
6.1 Main Board………………..……………...…….….......23		12. BOM List……………….…………………………….57
6.2 Power Board……..…………..………….…..…….......25

SAFETY NOTICE

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

42 LCD TV

Haier HL42XD1

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.)

42 LCD TV

Haier HL42XD1

1. General Specification

42 LCD TV

Haier HL42XD1

2. Operating Instructions

2.1 The Use of Remote Control

42 LCD TV	Haier HL42XD1
2.2 To Use the Menus

1.Press the MENU/EXIT 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/EXIT 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.Channels List: Show the channel List. User can edit (add/delete) the channel numbers.

6.Channel Labels: Show the NTSC / ATSC TV channel label 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 and Preset items.

1.Picture Mode: Adjust the best picture appearance from selecting the preset value of Vivid, Standard, PWR, Theater, Sport, or Custom.

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

42 LCD TV

Haier HL42XD1

3.Contrast: Video contrast adjustment, the tuning 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.Backlight: Backlight strength adjustment, the tuning range is 0 ~ 30.

9.Aspect Ratio: Choose the display aspect: Standard/Fill/Overscan.

10.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.

1.Sound Mode: Choose the sound mode: Standard, Movie, News, or Custom.

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.

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 flexibilities to satisfy their generally demands. According to the various requirements in different source modes, certain features should be hidden (disable) on the menu. The details footnotes will be described clearly below.

42 LCD TV

Haier HL42XD1

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. Advanced Video: Provide the Noise Reduction, Adaptive Contrast, and DCR for enhancing video quality.

[Noise Reduction] – Gives four NR effect degrees, such as: Low, Mid, High and Off. The default setting is Mid.

[Adaptive Contrast] – Choose On or off to adjust the gamma after analyzing the input signal automatically.

[DCR] – Dynamic Contrast Ratio (DCR) auto adjusts the backlight of the screen.

[Preset] – Restore the default advanced video option settings.

4.Transparency: Adjust the transparency of the on-screen menu from range 1 to 10.

5.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 .

42 LCD TV

Haier HL42XD1

6. 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 Locks 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 un-lock through pressing the V-CHIP key on the remote control and then 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 will 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.

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

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

9.Digital Captions: Select a digital caption options. (Service 1-6)

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

[Style] – Set to Automatic or Custom 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 sub-menu 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.

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

12.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 100.

[Preset] – Restore the default component setting values.

42 LCD TV

Haier HL42XD1

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. (0-100)

2.V-Position: Adjust the vertical position of the picture. (0-100)

3.Clock: Adjust picture clock to reduce Vertical-Line noise. (0-100)

4.Phase: Adjust Picture Phase to reduce Horizontal-Line noise. (0-100)

5.Auto Adjust: Adjust the settings automatically.

6.Preset: Restore the default VGA setting values.

42 LCD TV	Haier HL42XD1
2.3 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. The white color band on the rear of the TV indicates this connection.

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

3.AV IN (AV/S-VIDEO) – Connect the primary 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).

4.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. From left to right, 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 (out of- 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.AUDIO OUT – Connect an external sound system with standard audio cable to the AUDIO OUT L and R jacks on the back of your TV and to the AUDIO IN jacks on the amplifier.

42 LCD TV	Haier HL42XD1
2.4 Front Panel Control Knobs

42 LCD TV

Haier HL42XD1

3. Input/Output Specification

3.1 RGB Signal input

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-Sync.

7	Green Ground	15	Serial Clock for DDC

8	Blue Ground

3.2 HDMI Digital connector

Pin No.	Description	Pin No.	Description

1	TMDS Data2+	11	TMDS Clock Shield

2	TMDS Data2 Shield	12	TMDS Clock-

3	TMDS 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+

42 LCD TV

Haier HL42XD1

3.3 Signal type

AV (Composite Video input)

Video

System

NTSC

Amplitude

1.0 V(p-p), negative sync.

Impedance

75 ohm terminated

S-Video (Y / C input)

S-Video

System

NTSC

Y signal amplitude

1.0Vpp (including sync)

C signal amplitude

0.286Vpp

Impedance

75 ohm terminated

Component (Y, Pb/Cb, Pr/Cr input)

Component

System

1080i, 480p, 720p, 480i

Y signal amplitude

1.0Vpp (including sync)

Cr, (R-Y) / Cb, (B-Y)

±0.35Vpp, 75 ohm

Signal amplitude

Impedance

75 ohm terminated

Y = 0.299R + 0.587G + 0.114B

(R-Y)= 0.701R + 0.587G + 0.114B

(B-Y)=0.299R + 0.587G + 0.886B

3.4 PC Timings List

Vesa Modes

Horizontal

Vertical

Nominal

Sync

Pixel

Mode

Resolution

Total

Freq.

Polarity

Clock

(KHz)

(Hz)

(MHz)

640x480@60Hz

800 x 525

31.469

59.940

25.175

VGA

640x480@72Hz

832 x 520

37.861

72.809

31.500

640x480@75Hz

840 x 500

37.500

31.500

DOS

720x400@70Hz

900 x 449

31.469

70.087

28.322

800x600@56Hz

1024 x 625

35.156

56.250

36.000

SVGA

800x600@60Hz

1056 x 628

37.879

60.317

40.000

800x600@72Hz

1040 x 666

48.077

72.188

50.000

800x600@75Hz

1056 x 625

46.875

49.500

1024x768@60Hz

1344x806

48.363

60.004

65.000

XGA

1024x768@70Hz

1328x806

56.476

70.069

75.000

1024x768@75Hz

1312x800

60.023

75.029

78.750

CVT-0.92M9

1280x720@60Hz

1664x748

45.000

60.000

74.250

WXGA

1280x768@60Hz

1440x790

47.396

59.995

68.250

SXGA

1280x1024@60Hz

1688x1066

63.981

60.020

108.000

WXGA+

1440x900@60Hz

1600x926

55.469

59.901

88.750

WSXGA+

1680x1050@60Hz

1840x1080

65.290

59.954

146.250

FHD

1920x1080@60Hz

2200x1125

67.500

60.000

148.500

42 LCD TV

Haier HL42XD1

4. Mechanical Instructions

1. Remove the stand and base.

2. Remove rear cover.

42 LCD TV

Haier HL42XD1

3. Release the connectors and remove inverter board.

4. Remove main board and power board.

42 LCD TV

Haier HL42XD1

5. Remove BKT, speakers IR board and key board.

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