Haier HL22FG1 User manual

1
WARNING
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 b electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the
product deal with in this service information by anyone else could result in serious injury or death.
COLOR
TV
@2009(Full name of the company who issues the service information)
All rights reserved. Unauthorized copying and distribution is a violation of
law.
Chassis:MTK5380LC
Customer Model:HL22FG1
Service Model:HL22FG1a

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CONTENTS
Table of conents………………..................…………………………….2
1. General Information…………...............…………………………..3
1-1. General Guidelines...…………………………………………………..3
1-2. Important notice………………………………………………………...3
1-3. How to read this Service Manual……………………………………..4
2. Specifications……………………………………………....................6
3. Location of Controls and Components ...........................7
3-1.Board Location…………………………………………………………..7
3-2. Main Board & AV Board………………………………………………..7
3-3. Power Board…………………………………………………………….9
3-4. LCD Panel………………………………………………………………10
4. Disassemble and assemble…………………...........………….11
4-1 Remove the Pedestal ……………………………………………….…12
4-2 Remove the Back Cover…………………...…………………………..12
4-3 Remove the adhesive tape…….........…………………………………12
4-4 Remove the Terminal Bracket……………....…………………………12
4-5 Remove the power module……….......……………………………….13
4-6 Remove the Main board……………....……………………………….13
4-7 Remove the small power board……………………….………………13
4-8 Remove the speaker …....……………………………………………..13
4-9 Remove the remote control board …….....…………………………..13
5. Installation Instructions ………..................………………..…..14
5-1 External Equipment Connections …………………………..........…..14
5-2 HDMI Connections ..………………………….............................…...16
6. Operation Instructions …………………………........................19
6-1 Front Panel Controls …………………………………………….........19
6-2 Back Panel Controls ……………...……………………………..........19
6-3 Universal Remote Controller...........................................................19
7. Electrical parts ............................................................................21
7-1. Block diagram ...............................................................................21
7-2. Circuit Diagram..............................................................................21
7-3 .Wiring Connection Diagram...........................................................36
8. Measurements and Adjustments .......................................37
8-1. Service Mode ..................................................................................37

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8-1-1.How to enter into Service Mode ......................................................37
8-1-2.How to exit ..................................................................................37
8-2. Measurements and Adjustments ..................................................37
9. Trouble shooting ......................................................................43
9-1. Simple check ...............................................................................43
9-2. Power Supply Board failure check ..............................................44
9-3. Main board failure check ..............................................................45
9-4. Pannel failure ...............................................................................47

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1. General Information
1-1 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
1-2 Important notice
1-2-1. 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
1-2-2. Be careful to the electrical shock
To prevent damage which might result in electric shock or fire, do not expose this TV set to rain or
excessive moisture. This TV must not be exposed to dripping or splashing water, and objects
Filled with liquid, such as vases, must not be place on top of or above the TV
1-2-3. Electro static discharge (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such
Components commonly are called Electrostatically Sensitive (ES) Devices. The following
tech-niquesshouldbeusedtohelpreducetheincidenceofcomponentdamagecausedbyelectro
Static discharge (ESD).
1-2-4. About lead free solder (PbF)
This product is manufactured using lead-free solder as a part of a movement within the consum-er
products industry at large to be environmentally responsible. Lead-free solder must be used in the
servicing and repair of this product.
1-2-5. Use the genewing parts (specified parts)
Special parts which have purposes of fire retardant (resistors),high-quality sound (capacitors), low
noise(resistors), etc. are used.
When replacing any of components, be sure to use only manufacture's specified parts shown in
the parts list.
Safety Component
●Components identified by mark have special characteristics important for safety.

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1-2-7. Safety Check after Repairment
Confirm that the screws ,parts and wiring which were removed in order to service are put in the
original positions, or whether there are the portions 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.
Insuration Test
1. Unplug the plug from the AC outlet.
2. Remove the antenna terminal on TV and turn on the TV.
3. Insulation resistance between the cord plug terminals and the eternal exposure metal
should be more than M ohm by using the 500V insulation resistance meter
4. If the insulation resistance is less than M ohm, the inspection repair should be required.
If you have not the 500V insulation resistance meter, use a Tester.
External exposure metal: Antenna terminal Headphone jack
1-2-8. Ordering Spare Parts
Please include the following informations when you order parts. (Particularly the Version
letter)
1. Model number and Version letter
The model number can be found on the back of each product and the Version letter can
be found at the end of the serial number.
2. Part No. and Description
You can find them in your service manual
.
The illustration and photos used in this Manual may not base on the final design of products, which
may differ from your products in some way.
1-3. How to read this Service Manual
1-4-1. Using Icons
Icons are used to attract the attention of the reader to specific information. The meaning of each 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.
Caution:
A “caution” is used when there is danger that the reader, through incorrect manipulation,
1-2-6. Photo used in this manual

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may damage equipment, loose data, get an unexpected result or has to 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 he/she will
find additional information on a specific topic.
2. Specification
Model
Screen size 21.6inch
Aspect ratio 16:9
Resolution 1366×768
Contrast Ratio 1000:1
Angel of view H:170/V:160
Color display 16.7M
OSD language English
Color system ATSC/NTSC
Color Temperature Cold/Standard/Warm
Audio output power(Built-in)(W) 3W×2
Power Consmption(in Standby) 1W
Total power input（W）50W
Voltage range（V）120V±10% V
Power frequency（Hz）60HZ
Time of sleep timer(MINS) 240Min
Net weight(KG) 4.5
Gross weight(KG) 5.6
Net dimension(MM) 534/164/392
Packaged dimension(MM) 600/210/460
3. LOCATION OF CONTROLS AND COMPONENTS
HL22FG1

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3-1 Board Location
No. Parts number Description
B Board Power Board
3-2 Main Board & AV Board
3-2-1 Function Description:
Main Board：
Process signal which incept from exterior equipment，then translate into signal that panel can
display.
3-2-2 Connector definition
Main board connector
Power connectors (CN3, CN5)
CN3 CN5
A Board BBoard
A Board Main Board

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Notes:
CN3-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.
CN3-Pin 7: System power on / standby
System board will use this pin to control system power.
CN3-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.
Keypad and remote connector (CN2)
Pin number Signal name Description
1 IR_IN IR
2 CPU5V 5V
3 LED_G LAMP GREEN
4 GND GND
5 LED_R LAMPRED
6 K7 POWER
7 K6 MENU
8 K5 P_
9 K4 P+
10 K3 V_
11 K2 V+
12 K1 SOURCE
Speaker connector (CN1)
Pin number Signal name Description
1 LSPK LSPK
2 GND GND
3 GND GND
4 RSPK RSPK
DVD VIDEO Connector: CN6
Pin number Signal name Description
Pin number Signal name Pin number Signal name
1 +12V 1 +12V
2 +12V 2 GND
3 BL 3 GND
4 DIM 4 +5V
5 GND 5 STB
6 GND
7 SW

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1 GPIO GPIO
2 PB_IN PB1 IN
3 Y_IN Y1_IN
4 GND GND
5 PR_IN PR1 IN
6 GND GND
7 IR DVD IR
DVD AUDIO Connector: P1
Pin number Signal name Description
1 LI YPBPR1L_IN
2 RI YPBPR1R_IN
3 GND GND
Other connectors:
CN19 to Upgrade the program of MTK5380LC (U13) AND FLASH (U17)
U0TX
+3V3SB
U0RX
J3
4x1 W/HOUSING
DIP4/W/H/P2.0
1
2
3
4
3-3. Power Board
3-3-1 Function Description:
Supply power for Main board, Panel.
3-3-2Connectordefinition
INPUT CONNECTOR (CN6)
CN10 Signal name

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3-4. LCD Panel
3-4-1 Function Description: Display the signal.
3-4-2 Connector definition
1 N
2 GND
3 GND
4 DIM
5 EN
6 +12V
7 +12V
Pin number Signal name Description
1-3 LVDSVDD Power for panel
4-6 GND Ground
7 A0N LVDS EVEN 0 - Signal
8 A0P LVDS EVEN 0 + Signal
9 A1N LVDS EVEN 1 - Signal
10 A1P LVDS EVEN 1 + Signal
11 A2N LVDS EVEN 2 - Signal
12 A2P LVDS EVEN 2 + Signal
13,14 GND Ground
15 CK1N LVDS EVEN Clock - Signal
16 CK1P LVDS EVEN Clock + Signal
17 A3N LVDS EVEN 3 - Signal
18 A3P LVDS EVEN 3 + Signal
19 A4N LVDS ODD 0 - Signal
20 A4P LVDS ODD 0 + Signal
21 A5N LVDS ODD 1 - Signal
C M O （V 2 1 6 B 1- L 01)

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CN1 (Header):S14B-PH-SM4-TB (D)(LF)(JST) or equivalent.
Pin No. Symnbol Description
1
2
3
VBL
+5.0V Power input
4
5
6
13
14
25
26
GND
Ground
7-12
15
16
17
18
LVDS EVEN LVDS EVEN Signal
19-24
27
28
29
30
LVDS ODD
LVDS ODD Signal
4. Disassemble and assemble
22 A5P LVDS ODD 1 + Signal
23 A6N LVDS ODD 2 - Signal
24 A6P LVDS ODD 2 + Signal
25,26 GND Ground
27 CK2N LVDS ODD Clock - Signal
28 CK2P LVDS ODD Clock + Signal
29 A7N LVDS ODD 3 - Signal
30 A7P LVDS ODD 3+ Signal

4.1Remove the Front Co ver
①
②. Stand up the TV,open the TV from the bottom.
③Remover pin indicated with ○.
④
Remover the six screw indicated with ○.
Then remove the front cover from the unit.
4.2Remove the LCD panel
①
②
③
①Remover the four screw indicated with ○.
②.Then remove the panel.
4.3Remove the Main Board
①Remover the four screw indicated with ○.
②Remover the four screw indicated with ○.
③Then remove the Main Board.
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4.5Remove the Power Board
①Remover the four screw indicated with ○.
②Then remove the Power Board.
4.7Remove the Keypad
Assembly
①Remover the two screw indicated with ○.
②Then remove the Keypad Assembly.
4.6Remove the Speaker
①Remover the four screw indicated with ○.
②Then remove the . Speaker
4.8Remove the Remote
Control Board
①Remover the one screw indicated with ○.
②Then remove the Remote Control Board .
4
4
4
4

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5. Installation Instructions
5-1 External Equipment Connections
Antenna Connection
Connect one end of a coaxial cable (not included) to the ANT IN jack on the back of your TV/DVD
combo, then connect the other end of the cable into the antenna or cable TV wall outlet.
To improve picture quality from an antenna in a poor signal area, install a signal amplifier.
If you need to split the antenna signal to connect two TVs, install a two-way splitter.
Choose Your Connection
There are several ways to connect your television, depending on the components you want to
connect
and the quality of the signal you want to achieve. The following are examples of some different
ways to connect your TV with different input sources. Choose the connection which is best for you.

PC AUDIO IN
VGA IN
You can use your LCD-TV as a monitor for your personal computer using a VGA
cable (not supplied).
VGA Setup
Connection and use steps:
1.Read the userguide supplied with
your computer and ensure that it has
a VGA connector;
2.Make sure that the power of the LCD
-TV and thePC are off;
3.Connect a Dtype 15-pin PC interface
cable ( not supplied ) to the PC video
interface connector on the PC. Then
connect the other end to the PC video
interface connector on the back of the
LCD-TV.Tighten the screws on the PC
connectors once they are firmly
connected;
4.Turn on the power of the LCD-TV first ,
and then turn on the power of the PC;
5.Press INPUT button to set the video input mode of the LCD-TV to PC;
Once the input for PC is selected and if you see no image press function
F8 on you pc.
6.Check the imageon your TV. There may be noise associatedwith the resolution,
vertical pattern, contrast or brightness in PC mode. If noise is present, change
the PC mode to another resolution, change the refreshrate to another rate or
adjust the brightness and contrast on the menu untilthe picture is clear. If the
refresh rate of the PC graphic card can not be changed, change the PC graphic
card or consult the manufacturer of the PC graphic card.
Resolution
Mode
VGA
SVGA
XGA
Resolution
640x480
800x600
1024x768
Line frequency(KHz)
31.5
37.9
48.4
Frame frequency(Hz)
60
60
60
Component Setup
How to connect
Connect the DVD video outputs (Y, PB, PR)
to the Component(Y, Pb, Pr) IN jacks on
the TV and connect the DVD audio outputs
to the AUDIO IN jacks on the TV,as shown
in the figure.
NOTE: If your DVD player doesnot have
component video output,use S-Video.
How to use
1. Turn on the DVD player, insert a DVD.
2. Use button on theremote
control to selectthe proper input.
INPUT
Note: Allabove listed aresubject to VESAcriteria.
COMPONENT IN
Pr Pb Y
R-AUDIO-L
S-VIDEO IN
15

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5-2 HDMI Connections
When the source device(DVD player or Set Top Box) supports HDM
How To Connect
1. Connect the source device to HDMI port of this TV with an HDMI cable(not supplied with this
product).
2. No separated audio connection is necessary.
Cable TV Setup
After subscribing to a cable TV service from a local provider you can watch cable
TV programming. The TV cannot display TV programming unless a TV tuner
device or cableTV converter box is connected to the TV.
For further informationregarding cable TV service, contact your local cableTV
service provider(s).
Connection Option 1
1. Select 3 or 4 with channel switch on cable
box.
2. Tune the TV channel to the same selected
output channel oncable box.
3. Select channelsat the cable box or with
the cable box remote control.
Connection Option 2
1. Connect the audio and video cables from
the Cable Box'soutput jacks to the TV
input jacks, as shown in the figure.When
connecting the TV to a Cable Box, match
the jack colors
(Video = yellow, Audio Left = white, and
Audio Right= red).
2. Select the input source by using the
button on the remote control.
3. Select your desired channel with the
remote control forcable box.
INPUT
COMPONENT IN
Pr Pb Y
ATN IN R-AUDIO-L R-AUDIO IN-L
S-VIDEO IN
VIDEO
R-AUDIO IN-L VIDEO
External Component Source Setup
How to connect
Connect the audio and video cables from
the external equipment's output jacks to the
TV input jacks, as shown in the figure.
When connecting the TV to external equip-
ment, match the jack colors (Video = yellow,
Audio Left =white, and Audio Right = red).
How to use
1. Select the input source by using the
button on the remote control.
2. Operate the corresponding external equi-
pment. Refer to external equipment ope-
rating guide.
INPUT

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How To Use
If the source device supports Auto HDMI function, the output resolution of the source device will be
automatically
set to 1280x720p.
If the source device does not support Auto HDMI, you need to set the output resolution
appropriately.
To get the best picture quality, adjust the output resolution of the source device to 1280x720p.
Select HDMI input source in input source option of Select Main source menu.
When the source device(DVD player or Set Top Box) supports DVI
How To Connect
1. Connect the source device to HDMI port of this TV with a HDMI-to-DVI cable(not supplied with
this product).
2. A separated audio connection is necessary.
3. If the source device has an analog audio output connector, connect the source device audio
output to DVI Audio
In port located on the
left side of HDMI port.
How To Use
If the source device supports Auto DVI function, the output resolution of the source device will be
automatically
set to 1280x720p.
If the source device does not support Auto DVI, you need to set the output resolution appropriately.
To get the best picture quality, adjust the output resolution of the source device to 1280x720p.
Press the INPUT button to select HDMI input source in input source option of Select Main source
menu.
Installation
Cable sample
HDMI Cable
(not supplied with the product)
HDMI to DVI Cable
( not supplied with the product)

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Connecting Headphones
You can connect a set of headphones to your set if you wish to watch a
TV programmer without disturbing the other people in the room.
Plug a set of headphones into the 3.5mm
mini-jack socket on the rear panel of the set.
Note：
■Prolonged use of headphones at a high volume
may damage your hearing.
■You will not receive sound from the speakers
when you connect headphones to the system.
Power source
TO USE AC POWER SOURCE
Use the AC polarized line cord provided for operation on AC.
Insert the AC cord plug into a standard polarized AC outlet.
NOTES:
■ Never connect the AC line cord plug to other than the specified voltage.
Use the attached power cord only.
■If the polarized AC cord does not fit into a non-polarized AC outlet,
do not attempt to file or cut the blade. It is the user`s responsibility to have an
electrician replace the obsolete outlet.
■If you cause a static discharge when touching the unit and the unit fails to
function, simply unplug the unit from the AC outlet and plug it back in. The unit
should return to normal operation.
Analog Audio Cable
(Stereo to RCA type)
(not supplied with the product)
YPbPr
Audio I n
LR
Headphone
out
S- VID EO
PolarizedAC Cord Plug
AC Outlet
Wider Hole
and Blade

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6. Operation Instructions
Basal information
6-1 Front panel controls
6-2 Back panel controls
6-3 Setting Up Your Remote Control
After it has been set up properly, your remote control can operate in six different modes:
TV, VCR, CABLE, DVD, SETBOX or AUDIO. Pressing the corresponding button on the remote
control
R1 series series F seriesK1 1
INPUT MENU VOL- VOL+ CH- CH+ POWER
Control Panel Function
1. POWER Press to turnon and off the TV.
2. INPUT Selects the inputsignals.
3. MENU Menu display. Press to access the on-screen menu display.
4. VOL- Volume down / Left button to adjust the item in the OSD.
VOL+ Volume up/ Right button to adjust the item in the OSD
/Press to enter.
5. CH- TV channel down / to select the item in the menu.
CH+ TV channel up / to select the item in the menu.
6. Power indicator
7. Remote Sensor Receivers IR signals from the remote control.
Do not put anything near the sensor ,which may
block the remote control signal.
COMPONENT IN
Pr Pb Y
ATN IN R-AUDIO-L R-AUDIO IN-L PC AUDIO IN VGA INUSB HDMI S-VIDEO IN VIDEO
1.ANT IN(Antenna Input) Connect cable or antenna signals to the TV, either
directly or through your cable box.
2.Headphone jack : Headphone audio output terminal.
3.Audio in Connect audio outputfrom an external device to these jacks.
4.S-VIDEO Connect S-Video out from an S-Video device to the jacks.
5.Audio in Connect audio outputfrom an external device to these jacks.
6.Video in Connect video outputfrom an externaldevice to thisjack.
7.USB input Connect a USB flash drive to view JPEG images or listen toMP3
songs.
8.VGA Connect to theVGA 15PIN analog output connector of a PC
graphics card to use set as a PC display.
9.PC audio in Connect the audio output from the pc to thePC audio input port.
10. HDMI: Connect a HDMI device to receive digital audio and uncompressed
digital video.
11. Component Input Connect a componentvideo device to these jacks.

Remote Control Key Functions
When using the remote control, aim it
towards the remotesensor on the TV
(For TV withoutDVD)
PICTURE
CCD
INPUT
ARC
MENU
VOL-
EXIT
USB
PLAY/PAUSE
REV
DISPLAY GUIDE
1 2 3
4 5 6
7 8 9
MTS/SAP
CH+
CH-
VOL+
ENTER
STOP
PREV
FAVORITE
0
AUDIO
SLEEP
REPEAT
NEXT
CH.LIST
MUTE
RECALL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Note: the instructionon this manualtakes
remote of TVwith DVD forexample.
1.Press repeatedly to cycle through the available
picture modes
2.Press to change the aspect ratio
3.Select a closed caption
4.Show the input source
5.Press to open the on-screen menu
6.Volume/Channel Selection
7.Exit On Screen Display
8.Press to switch input source to USB in
9.DVD PLAY/PAUSE
10.DVD fast reverse
11.DVD fast forward
12.Press to display the TV status information on the top
of the TV screen
13.Shows program schedule in TV
14.Press to turn on and off the TV
15.Press to cycle through different sound settings
16.Press to display the sleep timer option
17.Select MONO, STEREO, SAP in NTSC system
18.Press to change a channel
19.Press to select digital channels. For example, to
enter “54-3”, press “54”, “ ” and “3”.
20.Switches the video sound on or off
21.Accesses the highlighted item in the on-screen menu
22.Press to jump back and forth between two channels
23.DVD REPEAT
24.DVD STOP
25.DVD Next Chapter
26.DVD Previous Chapter
27.Open the channel list in TV
28.Open the favorite channel list in TV
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