HL22XLT2
21.5″ LCD TV Haier HL22XLT2&HL22XLTW2
1
Service
Service
Service
Horizontal Frequency
31~68 KHz
TABLE OF CONTENTS
Description Page Description Page
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
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
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
2
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.)
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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)
Channel Coverage
VHF: 2 through 13
UHF: 14 through 69
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
Rear Connectors
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
Side Connectors
HDMI 2
Earphone Output
USB PORT
WEIGHT & DIMENSIOIN
Dimensions
with Stand
(W x H x D)(inch)
21.11x15.4x6.3
Dimensions
without Stand
(W x H x D)(inch)
21.11x13.84x1.62
Weight with Stand 8.82(lbs)
Weight without Stand
and Base
8.27(lbs)
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Model No. HL22XLT2 HL22XLTW2
WALL MOUNTING
VESA-compatible
wall bracket
(W x H)
100 x 100 mm
Screw type Metric 4 x 10 mm
POWER
Power Consumption 50W
Standby <1W
Mains Power 120V 60Hz
Audio Power 3W + 3W
Ambient Temperature 41°F ~ 95°F
PACKAGE CONTENTS
Supplied Accessories
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
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2. Operating Instructions
2.1 The Use of Remote Control
7
8
2.2 To Use the Menus
9
10
11
12
13
14
15
16
2.3 Front Panel Control Knobs
1.
POWER
Press to turn on / off (standby) the TV set.
2.
VOL +
Press to increase the volume.
3.
VOL -
Press to decrease the volume.
4.
CH ▲
Press to increase the channel number.
5.
CH ▼
Press to decrease the channel number.
6.
MENU
Press to open or exit the OSD (on-screen display) menu.
7.
INPUT
Press to select the input source.
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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.)
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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
. Sync
7 Green Ground 15 Serial Clock for DDC
8 Blue Ground
HDMI
Pin No. Description Pin No. Description
1
T
MDS Data2+ 11
T
MDS Clock Shield
2
T
MDS Data2 shield 12
T
MDS Clock-
3
T
DMS Data2- 13 CEC
4
T
MDS Data1+ 14 NC
5
T
MDS Data1 shield 15 SCL
6
T
MDS Da
t
a1- 16 SD
A
7
T
MDS Data0+ 17 DDC/CEC Ground
8
T
MDS Data0 shield 18 +5V Power
9
T
MDS Data0- 19 Hot Plug Detec
t
10
T
MDS Clock+
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