Haier HL22XLT2, HL22XLTW2 Schematic

21.5″ LCD TV Haier HL22XLT2&HL22XLTW2

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…...………………….….………......8

2.3 Front Panel Control Knobs……………….………......16

2.4 How to Connect…….…………………….…..…….....17

3. Input/Output Specification…………....................…....18

4. Mechanical Instructions…………………….................20

5. Repair Flow Chart ………………………………………22

6. PCB Layout …………...………………………………...29

SAFETY NOTICE

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

6.1 Main Board………..…………………...…….….......29

6.2 Power Board…..…………..………….…..…….......31

6.3 Key Board………………………..……..……….......37

6.4 IR Board…………………………..……….…….......37

7. Adjustment..............................................................38

8. Block Diagram.…….................................................39

9. Wiring Diagram.……...............................................40

10. Schematic Diagram………..……..………………...41

10.1 Main Board…………….…………………...….......41

10.2 Power Board………..…....…………...……….......51

10.3 Key Board……………….………….………….......55

10.4 IR Board……………………………….……….......56

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.)

1. General Specification

Note

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

Model No. HL22XLT2 HL22XLTW2

DISPLAY

Viewable 21.5"

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

VHF: 2 through 13 UHF: 14 through 69

Channel Coverage

Rear Connectors

Cable TV: Mild band (A - 8 through A - 1,A through I),

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

CONNECTIONS

Tuner input (75Ω) AV IN: AV/S-Video and L/R audio input 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. Note: 1280x1024@60Hz, 1440x900@60Hz, 1680x1050@60Hz, 1920x1080@60Hz:

For HL22XLT2 / HL22XLTW2 only.

Recommended: HL22XLT2 / HL22XLTW2: 1920x1080@60Hz

Component Video and L/R Audio input

Supported resolution: 480i@59.94/60Hz, 480p@59.94/60Hz,

720p@59.94/60Hz, 1080i@59.94/60Hz, 1080p@59.94/60Hz

HDMI input

Supported scan rates: 480i@59.94/60Hz, 480p@59.94/60Hz,

720p@59.94/60Hz, 1080i@59.94/60Hz, 1080p@59.94/60/24/30Hz

AV/S-Video input SPDIF HDMI 1

HDMI 2

Side Connectors

Dimensions with Stand (W x H x D)(inch)

Dimensions without Stand (W x H x D)(inch)

Weight with Stand 8.82(lbs)

Weight without Stand and Base

Earphone Output USB PORT

WEIGHT & DIMENSIOIN

21.11x15.4x6.3

21.11x13.84x1.62

8.27(lbs)

Model No. HL22XLT2 HL22XLTW2

WALL MOUNTING

VESA-compatible wall bracket (W x H)

Screw type Metric 4 x 10 mm

Power Consumption 50W

Standby <1W

Mains Power 120V 60Hz

Audio Power 3W + 3W

Ambient Temperature 41°F ~ 95°F

Supplied Accessories

100 x 100 mm

POWER

PACKAGE CONTENTS

TV unit x 1 Base x 1 Remote control x 1 (with two size AAA alkaline batteries) User manual x 1 Registration Card x 1

2. Operating Instructions

2.1 The Use of Remote Control

2.2 To Use the Menus

2.3 Front Panel Control Knobs

POWER

VOL +

VOL -

CH ▲

CH ▼

INPUT

Press to turn on / off (standby) the TV set.

Press to increase the volume.

Press to decrease the volume.

Press to increase the channel number.

Press to decrease the channel number.

Press to open or exit the OSD (on-screen display) menu.

Press to select the input source.

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).

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. 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. USB PORT – Insert USB storage device to the USB port to view JPEG photos, listen to MP3 music, or to run the [Time Shift] function.

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 INPUT button on the remote control to select the relevant source to view. (ex: Press INPUT button to select “Component” if you have connected a video recorder to the Component input.)

3. Input/Output Specification

3.1 Input Signal Connector

D-SUB

HDMI

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

7 Green Ground 15 Serial Clock for DDC

8 Blue Ground

. Sync

Pin No. Description Pin No. Description

MDS Data2+ 11

MDS Data2 shield 12

DMS Data2- 13 CEC

MDS Data1+ 14 NC

MDS Data1 shield 15 SCL

MDS Data1- 16 SDA

MDS Data0+ 17 DDC/CEC Ground

MDS Data0 shield 18 +5V Power

MDS Data0- 19 Hot Plug Detect

MDS Clock+

MDS Clock Shield

MDS Clock-

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