Haier HLC24XSLW2 User manual

Order No.
LCD TV
Model No.
Chassis
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 by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair
the product or products dealt with in this service information by anyone else could result in serious injury or death.
Haier Group
©2010 Qingdao Haier Electronics Co., Ltd.
All rights reserved. Unauthorized copying and distribution is a violation of law.
SERVICE MANUAL
WARNING
TV1004S015V0
MTK5305
HLC24XSLW2
Service No. HLC24XSLW2
a
HLC24XSL2
HLC24XSL2a

CONTENTS
Chapter 1: General Information
1-1. Document Information........................................................................... 3
1-2. General Guidelines ................................................................................ 3
1-3. Important Notice ..................................................................................... 3
1-3-1. Follow the regulations and warnings ..................................................... 3
1-3-2. Be careful to the electrical shock........................................................... 3
1-3-3. Electro static discharge (ESD)............................................................... 3
1-3-4. About lead free solder (PbF).................................................................. 4
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1-3-6 Safety check after repairment................................................................. 4
1-3-7. Ordering Spare Parts............................................................................. 6
1-3-8. Photo used in this manual ..................................................................... 6
1-4. How to Read this Service Manual ...................................................... 6
1-4-1. Using icons: ........................................................................................... 6
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6SHFL¿FDWLRQOLVW ...................................................................................... 8
2-2 External pictures (four faces) .............................................................. 9
Chapter 3. Disassemble and Assemble
.............................................................................
11
...............11
......................................................................11
.............................................................................
12
..........................................................12
..................................................
12
Chapter 4. Location of Controls and Components
4-1. Board Location...................................................................................... 13
4-2. Main Board..............................................................................................
13
4-2-1 Function Description:............................................................................ 14
&RQQHFWRUGH¿QLWLRQ.............................................................................. 14
3-1 Remove the Pedestal
3-2. Remove the Front Cover And Remove the LCD Panel
3-3. Remove the Main Board
3-4. Remove the Speaker
3-5. Remove the Keypad Assembly
3-6. Remove the Remote Control Board
3-7. Remove the DVD Keypad Board
......................................................12
3-8. Remove the DVD ..................................................................................12

4-3. LED Driver Board ............................................................................ 16
4-3-1. Function description:............................................................................ 16
&RQQHFWRUGH¿QLWLRQ............................................................................ 16
4-4. LCD Panel.............................................................................................. 16
Chapter 5. Installation Instructions
Chapter 6. Operation Instructions
6-1. Front Panel Controls............................................................................ 23
6-2. Back Panel Controls
............................................................................. 23
6-3. Setting Up Your Remote Control
........................................................ 23
Chapter 7. Electrical Parts
7-1. Block Diagram....................................................................................... 25
7-3. Circuit Diagram ......................................................................................27
7-2 .Wiring Connection Diagram...............................................................
Chapter 8. Measurements and Adjustments
8-1. Service Mode ....................................................................................... 40
8-1-1.How to enter into Service Mode............................................................ 40
8-1-2.How to exit............................................................................................ 40
8-2. Measurements and Adjustments ...................................................... 40
8-2-1. Version, S/N, Panel Resoution ............................................................ 40
8-2-2. Video.................................................................................................... 41
8-2-3. Audio.................................................................................................... 42
8-2-4. Channel ............................................................................................... 42
8-2-5. Gamma................................................................................................ 44
8-2-6. Backlight .............................................................................................. 44
8-2-7. Function............................................................................................... 45
Chapter 9. Trouble shooting
9-1. Simple check ......................................................................................... 47
9-2. Power Supply Board Failure Check................................................. 48
9-3. Mainboard Failure Check .................................................................. 49
9-4. Pannel Failure ....................................................................................... 50
..........................................18
.......................................... 23
25

Service Manual
Model No.: HLC24XSLW2a
3
Chapter 1: General Information
1-1. Document Information
Document format: Adobe PDF
Author: Zhou Peng
Compiler: Bao Qinghong
1-2. General Guidelines
When servicing, observe the original lead dress. If a short circuit is found, replace all parts which
have been overheated or damaged by the short circuit.
After servicing, see to it that all the protective devices such as insulation barriers, insulation papers
shields are properly installed.
After servicing, make the following leakage current checks to prevent the customer from being
exposed to shock hazards.
1) Leakage Current Cold Check
2) Leakage Current Hot Check
3) Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive
1-3. Important Notice
1-3-1. Follow the regulations and warnings
Most important thing is to list up the potential hazard or risk for the service personnel to open
the units and disassemble the units. For example, we need to describe properly how to avoid the
possibility to get electrical shock from the live power supply or charged electrical parts (even the
power is off).
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 literture accompanying the appliance.
1-3-2. Be careful to the electrical shock
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or excessive moisture. This TV must not be exposed to dripping or splashing water, and objects
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1-3-3. Electro static discharge (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such

Service Manual
4
components commonly are called Electrostatically Sensitive (ES) Devices. The following
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electros static discharge (ESD).
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid-state) devices can be damaged easily by static electricity. Such
components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical
ES devices are integrated circuits and some field-effect transistors and semiconductor "chip"
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damage caused by static by static electricity.
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assembly, drain off any electrostatic charge on your body by touching a known earth ground.
Alternatively, obtain and wear a commercially available discharging wrist strap device, which
should be removed to prevent potential shock reasons prior to applying power to the unit under
test.
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conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of
the assembly.
1-3-4. About lead free solder (PbF)
This product is manufactured using lead-free solder as a part of a movement within the
consumer products industry at large to be environmentally responsible. Lead-free solder must be
used in the servicing and repairing of this product.
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low noise (resistors), etc. are used.
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the parts list.
Safety Component
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1-3-6 Safety check after repairment
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original positions, or whether there are the positions which are deteriorated around the serviced
places serviced or not. Check the insulation between the antenna terminal or external metal and
the AC cord plug blades. And be sure the safety of that.
General Servicing Precautions
Model No.: HLC24XSLW2a

Service Manual
5
1. Always unplug the receiver AC power cord from the AC power source before:
a. Removing or reinstalling any component, circuit board module or any other receiver
assembly.
b. Disconnecting or reconnecting any receiver electrical plug or other electrical connection.
c. Connecting a test substitute in parallel with an electrolytic capacitor in the receiver.
CAUTION: A wrong part substitution or incorrect polarity installation of electrolytic capacitors
may result in an explosion hazard.
2. Test high voltage only by measuring it with an appropriate high voltage meter or other voltage
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Do not test high voltage by "drawing an arc".
3. Do not spray chemicals on or near this receiver or any of its assemblies.
4. Unless specified otherwise in this service manual, clean electrical contacts only by applying
the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable non-
abrasive applicator; 10% (by volume) Acetone and 90% (by volume) isopropyl alcohol (90%-99%
strength).
CAUTION:7KLVLVDÀDPPDEOHPL[WXUH
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Capacitors may result in an explosion hazard.
5. Do not defeat any plug/socket B+ voltage interlocks with which receivers covered by this
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6. Do not apply AC power to this instrument and/or any of its electrical assemblies unless all
solid-state device heat sinks are correctly installed.
7. Always connect the test receiver ground lead to the receiver chassis ground before connecting
the test receiver positive lead.
Always remove the test receiver ground lead last. Capacitors may result in an explosion
hazard.
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CAUTION: 'RQRWFRQQHFWWKHWHVW¿[WXUHJURXQGVWUDSWRDQ\KHDWVLQNLQWKLVUHFHLYHU
9. Remove the antenna terminal on TV and turn on the TV.
10. Insulation resistance between the cord plug terminals and the eternal exposure metal should
be more than Mohm by using the 500V insulation resistance meter.
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If you have not the 500V insulation resistance meter, use a Tester. External exposure metal:
Antenna terminal Headphone jack.
Model No.: HLC24XSLW2a

Service Manual
Model No.: HLC24XSLW2a
6
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static type solder removal device. Some solder removal devices not
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5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to
damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before
you are ready to install it.
(Most replacement ES devices are packaged with leads electrically shorted together by
conductive foam, aluminum foil or comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES
device, touch the protective material to the chassis or circuit assembly into which the device will
be installed.
CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety
precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise
harmless motion such as the brushing together of your clothes fabric or the lifting of your foot
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1-3-7. Ordering Spare Parts
Please include the following informations when you order parts. (Particularly the Version letter)
1. Model number, serial number and software version
The model number and serial number can be found on the back cover of each product. Software
version can be found in the Spare Parts List.
2. Spare part No. and description
Spare part No. and description can be found in the Spare Parts List.
1-3-8. Photo used in this manual
The illustration and photos used in this Service Manual may not base on the final design of
products, which may differ from your products in some way.
1-4. How to Read this Service Manual
1-4-1. Using icons:
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icon is described in the table below:
Note:
A “note” provides information that is not indispensable, but may nevertheless be
valuable to the reader, such as tips and tricks.

Service Manual
7
Caution:
A “caution” is used when there is danger that the reader, through incorrect
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restart(part of) a procedure.
Warning:
A “warning” is used when there is danger of personal injury.
Reference:
A “reference” guides the reader to other places in this binder or in this manual, where
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Model No.: HLC24XSLW2a

Service Manual
Model No.: HLC24XSLW2a
8
Model HLC22XSL2
Screen Size 23.6 inch
Aspect Ratio 16:9
Resolution 1920x1080
Response Time (ms) 5 (GRAY TO
GRAY)
Angel of View H:170/V:60
Color Display 16777216
No. of Preset Channels 181
OSD Language English/French/Spanish
Color System NTSC
Audio System M, BG, I, L, L'
Audio Output Power
(Built-in) (W) 3W×2
YES
Total Power Input (W) 40W
Voltage Range (V) AC100V~240V
3RZHU)UHTXHQF\+] 60Hz
Time of Sleep Timer
(MINS) 120Min
Net Weight (KG) 3.5
Gross Weight (KG) 6.5
Net Dimension (MM) 528/160/388
Packaged Dimension
(MM) 620/130/450
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DVD Player
HLC22XSLW2
23.6 inch
16:9
1920x1080
5 (GRAY TO
GRAY)
H:170/V:60
16777216
181
English/French/Spanish
NTSC
M, BG, I, L, L'
3W×2
YES
40W
AC100V~240V
60Hz
120Min
3.5
6.5
528/160/388
620/130/450

Service Manual
9
2-2 External pictures (four faces)
Front Side
Left Side
Model No.: HLC24XSLW2a

Service Manual
Model No.: HLC24XSLW2a
10
Right Side
Back Side

①
②
Remover the fo screw indicated with
Remover the two pin indicated with
ur ○.
○.
Chapter 3. Disassemble and Assemble
3-1. Remove the Pedestal
3-2. Remove the Front Cover
And Remove the LCD Panel 3-3. Remove the Main Board
Service Manual
Model No.: HLC24XSLW2a
11
① Lay down the unit so that rear cover
downward.
② Remove the one screw from the
pedestal indicated with
③
○.
Then remove the pedestal .
①
②.
③
Remove the two screw indicated with ○.
Turn to back cover upwards
Then remove the back cover from the unit.
①Remove the pin indicated with ○.
②Then remove the panel.
HLC24XSL2a AND HL24XSLW2a

①remove the Keypad Assembly.
①
②.
Remover the four screw indicated with
Then remove the
○.
Speaker
①
②
Remover the one screw indicated with
Then remove the Remote Control Board
○.
.
3-4. Remove the Speaker
3-5. Remove the Keypad Assembly
3-6. Remove the Remote Control Board
Service Manual
Model No.: HLC24XSLW2a
12
①Remove the DVD label indicated with ○.
②Remove the two screw indicated with ○.
③Then remove the DVD Keypad Board .
①Remove the four screw indicated with ○.
②Then remove the DVD .
①
②
3-7. Remove the DVD Keypad Board
3-8. Remove the DVD

Chapter 4. Location of Controls and Components
4-1. Board Location
4-2. Main Board
Service Manual
13
Model No.: HLC24XSLW2a
No. Parts number Description
A board DC1BC0E0200M Main Board
DC1BC0E0100M Main Board
B board 0090724659 LED Driver Board
C DC1BC0E0200D DVD
DC1BC0E0100D DVD

4-2-1 Function Description:
Main Board
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Main board connector
Power connectors (CN1)
CN1
Pin number Signal name
1 +12V
2 +12V
3BL
4 DIM
5 GND
6 GND
7SW
Notes:
CN1-Pin 3: Backlight on/off:
The system can turn on or turn off the backlight of TFT LCD Panel through the power supply
unit path.
System board will use this pin to control system power.
CN1-Pin 4: Control the luminance of backlight
The system can generate the PWN signal to control the strength of TFT LCD Panel’s
backlight through this connector
CN2 CN3
Pin number Signal name Pin number Signal name
1SB5V 1 GND
2IR 2 AD1
3LED_R 3 AD2
4LED_G
5GND
Keypad and remote connector (CN2,CN3)
Service Manual
Model No.: HLC24XSLW2a
14
Speaker Connector (CN4)
Pin number Signal name
1L+
2L-
3R-
4R+
DVD Audio Connector (CN8)
Pin
numberSignal nameDescription
1 DVD_L_IN Left track
2 DVD_R_IN Right track
3 GND Ground

Service Manual
15
Pin number Signal nameDescription
1 NC NC
2 NC NC
3 NC NC
4 NC NC
5 LVDS_D0E_N LVDS EVEN 0 - Signal
6 LVDS_D0E_P LVDS EVEN 0 + Signal
7 GND Ground
8 LVDS_D1E_N LVDS EVEN 1 - Signal
9 LVDS_D1E_P LVDS EVEN 1 + Signal
10 GND Ground
11 LVDS_D2E_N LVDS EVEN 2 - Signal
12 LVDS_D2E_P LVDS EVEN 2 + Signal
13 GND Ground
14 LVDS_CE_N LVDS EVEN Clock - Signal
15 LVDS_CE_P LVDS EVEN Clock + Signal
16 GND Ground
17 LVDS_D3E_N LVDS EVEN 3 - Signal
18 LVDS_D3E_P LVDS EVEN 3 + Signal
19 GND Ground
20 NC NC
21 NC NC
22 NC NC
23 GND Ground
24 GND Ground
25 GND Ground
26 Panel_power Power for panel
27 Panel_power Power for panel
28 Panel_power Power for panel
29 Panel_power Power for panel
30 Panel_power Power for panel
LVDS Connector (CN5)
DVD Power Connector (CN7)
Pin
numb
er
Signal
nameDescription
1 STB stand by
2 5V 5V Power
3 GND Ground
4 GND Ground
5 12V 12V Power
DVD Video Connector (CN6)
Pin
num
ber
Signal
nameDescription
1 DVD_SW
2 DVD_PB Pb Signal
3 DVD_Y Y Signal
4 GND Ground
5 DVD_PR Pr Signal
6 GND Ground
7 DVD_IR IR control
DVDSKIP
Model No.: HLC24XSLW2a

4-3. LED Driver Board
4-3-1. Function description:
To supply power for Panel.
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INPUT CONNECTOR (CNC1)
Service Manual
Model No.: HLC24XSLW2a
16
Power supply and Inverter Connector
˄
CNC1
˅
Pin
numberSignal nameDescription
 1& 
 *1' Ground
 *1' Ground
 %/$'-867 ,19(57(5/LJKWQHVV$GMXVW
 %/212)) ,19(57(56ZLWFK&RQWURO
 9 9 Power
 9 9 Power
Other Connector
Power supply for panel (CNC2)
Power supply for panel (CNC3)
4-4. LCD Panel

Service Manual
17
Panle LVDS Connector (CNC4)
Model No.: HLC24XSLW2a

Chapter 5. Installation Instructions
Service Manual
Model No.: HLC24XSLW2a
18
Over-the-air TV reception quality will depend on your antenna type, antenna location and antenna positioning.
ANT IN
VHF Antenna
UHF Antenna
Turn clockwise to tighten
Bronze Wire
Be careful not to bend the bronze wire
when connecting the antenna.
Bronze Wire
Multi-family Dwellings/Apartments
(Connect to wall antenna socket)
Wall Antenna
Socket
RF Coaxial Wire (75 ohm)
Single-family Dwellings /Houses
(Connect to wall jack for outdoor antenna)
Outdoor Antenna
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.
To install the antenna properly please contact a
professional in your area.
Note
All cables shown are not included with the TV.R
ANT IN
Accessories
Antenna Connection
Connecting a VCR
To avoid picture noise (interference), leave an adequate
distance between the VCR and TV.
VCR
VIDEO
AV IN
AUDIO OUT
L R
L -AUDIO- R ANT IN
Alkaline battery (AAA) x2 DC power adapter
PLAY/PAUSE
REV
REPEAT
GUIDE
MTS/SAP
CCD ARC
FREEZE
ENTER
STOPUSB REC
PREV NEXT
CH.LIST
FAVORITE
TV
STB
INPUT
MUTE
VOL CH
MENU
SLEEP DISPLAY
EXIT
RECALL
PICTURE AUDIO PC HDMI
CABLE VCR AUD
DVD

19
Service Manual
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
Connect the audio and video cables from the VCR’sA
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 a 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.
Insert a video tape into the VCR and press
BPLAY on
the VCR. (Refer to the VCR owner’s manual.)
Select the input source with using the
CINPUT button
on the remote control, and then press

/

button
to select the source, press ENTER button to confirm.
A/V Source Setup
Connect the audio and video cables from the
A
external equipment’s output jacks to the TV input
jacks, as shown in the figure.
When connecting the TV to external equipment,
B
white, and Audio Right = red).
VIDEO
AV IN
AUDIO OUT
L R
L -AUDIO- R
How to use
Select the input source with using the
AINPUT
on the remote control.
Operate the corresponding external equipment.
B
Refer to external equipment operating guide.
Component Setup
How to connect
Connect the DVD video outputs (COMPONENT) toA
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.
If your DVD only has an S-VIDEO output jack, connect
B
this to the S-VIDEO input on the TV, as shown in the
figure.
Note
If your DVD player does not haveR
component video output, use S-Video.
COMPONENT
IN
Y Pb Pr L -AUDIO- R
How to use
Turn on the DVD player, insert a DVD disc.A
Use
BINPUT button on the remote control to select
proper input.
Connecting a computer
How to connect
To get the best picture quality, adjust the VGA A
graphics card to 1024s768.
Use the TV’s VGA or DVI (Digital Visual Interface)B
Audio IN port for audio connections, depending on
your computer connector.
If the graphic card on the computer does notq
output analog and digital RGB simultaneously,
connect only one of either VGA IN or HDMI IN to
display the VGA on the TV.
If the graphic card on the computer does outputq
analog and digital RGB simultaneously, set the TV
to either VGA or HDMI; (the other mode is set to
Plug and Play automatically by the TV.)
Then, make the corresponding audio connection.
C
If using a sound card, adjust the VGA sound as
required.
PC/DVI AUDIO IN PC IN
9*$ ,1
Model No.: HLC24XSLW2a