This service information is designed for
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.
experienced repair technicians only and is not designed for use by the general public. It does
RNING
Qingdao Electronics
2009 (
All rights reserved. Unauthorized copying and distribution is a violation of
law.
limited com
pany
)
1
CONTENTS
Table of contents
1. General Information
1.1. General Guidelines...…………………………………………...….………..4
1.2. Important notice………………………………………………….…………...4
1.3. How to read this Service Manual…………………………...…..…………..5
2. Specifications
3. Location of Controls and Components
3.1.Board Location……………………………………….……………..…..……..7
3.2.
A Board----Main Boar
B Board---- Power Board
3.3.
………………..................…………………………….2
…………...............…………………..………..4
…………………………………………..…....................6
.............................7
…………………………………………..………..7
…………………….…….....……………….11
3.4. LCD Panel……………………………………………………….……………12
4. Disassemble and assemble
4.1 Remove the Front Cabinet……………………………….……..…….….…14
4.2 Remove the LCD panel…………………….…………….….………..……..14
4.3 Remove the Main Board…….........……………………..……..……………14
4.4 Remove the Power Board……………....……………..………….…………15
4.5 Remove the Speaker……….......…………………..…..…………..……….15
4.6 Remove the Keypad Assembly…....…………………..…......…………….15
4.7 Remove the Remote Control Board………………………….……………..15
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.
4
1.2.6 Take Care to Deal With The Cathode-Ray Tube
In the condition that an explosion-proof cathoderay tube is set in this equipment, safety is se-cured
against implosion. However, when removing it or serving from backward, it is dangerous to give a
shock. Take enough care to deal with it.
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.
1.2.9 Photo used in this 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
1.3.1 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,
5
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 HL22FPB1
Screen size21.6inch
Aspect ratio 16:9
Resolution 1366×768
Contrast Ratio 1000:1
Angel of viewH: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 Consumption(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
6
3. LOCATION OF CONTROLS AND COMPONENTS
3.1. Board Location
B Board
A Board
No. Description
A Board Main Board
B Board Power supply Board
C Panel
C
3.2. A Board----Main Board
3.2. 1 Function Description:
Main Board:
7
Process signal which incept from exterior equipment,then translate into signal that panelcan display.
1 NC
2 GND
3 GND
4 BL-ADJUST INVERTER Lightness Adjust
5 BL-ON/OFF INVERTER Switch Control
6 +12V 12V Power
7 +12V 12V Power
Other Connector
AC150V~AC240V Input (CN15)
Power supply for panel (CN11)
Power supply for panel (CN12)
Power supply for panel (CN13)
Power supply for panel (CN14)
Ground
Ground
3.4. LCD PANEL.
LVDS Connector (CN10)
Connector definition
CN10
PIN 1
12
13
4. 1Re move the Front Ca binet
①
4.2Remove the LCD panel
①Remover thesixscrewsindicatedwith ○.
②.Then remove the panel.
①
Remover thesixscrewsindicatedwith ○.
②. Stand up the TV,open the TV from the bottom.
③Removerpinindicatedwith ○.
④
Thenremovethe frontcabinetfromtheunit.
②
4.3Remove the MainBoard
③
①Remover the fourscrewsindicatedwith ○.
②Remover thefourscrewsindicatedwith
○.
4.4Remove thePowerBoard
①Remover thefourscrewsindicatedwith ○.
②Then remove the PowerBoard.
4.5Remove the Speaker
4.7Remove the Remote
Control Board
①Remover theone screwindicatedwith ○.
②Then remove the Remote Control Board .
①Remover thefourscrewsindicatedwith ○.
②Then remove the . Speaker
4.6Remove the Keypad
Assembly
①Remover thetwoscrewsindicatedwith ○.
②Then remove the KeypadAssembly.
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.
14
VGA Setup
You can use your LCD-TV as a monitor for your personal computer using a VGA
cable (not supplied).
Connection and use steps:
1.Read the user guide supplied with
your computer and ensure that it has
a VGA connector;
2.Make sure that the power of the LCD
-TV and the PC are off;
3.Connect a D type 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 image on your TV. There may be noise associated with the resolution,
vertical pattern, contrast or brightness in PC mode. If noise is present, change
the PC mode to another resolution, change the refresh rate to another rate or
adjust the brightness and contrast on the menu until the 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
VGAIN
PC AUDIOIN
Frame frequency(Hz)
60
60
60
Note: All above listed are subject to VESA criteria.
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 does not have
component video output,use S-Video.
How to use
1. Turn on the DVD player, insert a DVD.
INPUT
2. Use button on the remote
control to select the proper input.
Pr Pb Y
COMPONENT IN
R-AUDIO-L
S-VIDEO IN
15
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 cable TV converter box is connected to the TV.
For further information regarding cable TV service, contact your local cable TV
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 on cable box.
3. Select channels at the cable box or with
the cable box remote control.
Connection Option 2
1. Connect the audio and video cables from
the Cable Box's output 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.
INPUT
3. Select your desired channel with the
remote control for cable box.
ATN INR-AUDIO-LR-AUDIO IN-L
Pr Pb Y
COMPONENT IN
S-VIDEO IN
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 equipment, 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
R-AUDIO IN-L VIDEO
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.
16
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)
17
Analog Audio Cable
(Stereo to RCA type)
(not supplied with the product)
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.
LR
YPbPr
Audio In
Headphone
out
S-VID EO
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
Wider Hole
and Blade
AC O utlet
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.
Polarized AC Cord Plug
18
6. Operation Instructions
Basal information
6.1 Front panel controls
INPUT MENU VOL- VOL+ CH- CH+ POWER
R1 seriesseries F series K11
Control Panel Function
1. POWER Press to turn on and off the TV.
2. INPUT Selects the input signals.
3. MENUMenu 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.
6.2 Back panel controls
ATN INR-AUDIO-LR-AUDIO IN-L
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 output from 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 output from an external device to these jacks.
6.Video in Connect video output from an external device to this jack.
7.USB input Connect a USB flash drive to view JPEG images or listen to MP3
songs.
8.VGA Connect to the VGA 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 the PC audio input port.
10. HDMI: Connect a HDMI device to receive digital audio and uncompressed
digital video.
11. Component Input Connect a component video device to these jacks.
Pr Pb Y
S-VIDEO IN
COMPONENT IN
6.3 Setting Up Your Remote Control
VIDEO
VGA INUSBHDMI
PC AUDIO IN
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
19
Remote Control Key Functions
When using the remote control, aim it
towards the remote sensor on the TV
PICTURE
1
ARC
2
3
4
MENU
5
6
EXIT
7
USB
8
9
REV
10
DISPLAY GUIDE
11
12
13
(For TV without DVD)
CCD
MTS/SAP
1 2 3
4 5 6
7 8 9
INPUT
0
CH+
VOL-
ENTER
CH-
STOP
PLAY/PAUSE
PREV
FAVORITE
VOL+
AUDIO
SLEEP
MUTE
RECALL
REPEAT
NEXT
CH.LIST
14
15
16
17
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
18
7.Exit On Screen Display
8.Press to switch input source to USB in
9.DVD PLAY/PAUSE
19
10.DVD fast reverse
11.DVD fast forward
20
12.Press to display the TV status information on the top
of the TV screen
21
13.Shows program schedule in TV
14.Press to turn on and off the TV
15.Press to cycle through different sound settings
22
23
24
25
26
27
28
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
Note: the instruction on this manual takes
remote of TV with DVD for example.
Change to 100uF to
improve low
frequency
feature.(old=22uF)
U59
U59
I/L
VREF
VREF
I/R
PT2308
PT2308
VC5
1
-
-
O/L
+
+
+
+
-
-
O/R7GND
VREF_PT2308
R146 3.9kR146 3.9k
2
3
5
6
R17833.9kR17833.9k
C691
C691
2.2nF
2.2nF
C693
C692
C692
2.2nF
2.2nF
C693
10uF/10v
10uF/10v
C0805/SMD
C0805/SMD
C694
C694
R1778 3.9kR17783.9k
10uF/10v
10uF/10v
C0805/SMD
C0805/SMD
R1777 3.9kR1777 3.9k
C669
C669
R2031 470R2031 470
10uF/10v
10uF/10v
AL1
C0805/SMD
C0805/SMD
C670
C670
R2032 470R2032 470
10uF/10v
10uF/10v
AR1
C0805/SMD
C0805/SMD
L149FBL149
HPOUTL
FB
L150FBL150
HPOUTR
FB
C667
10uF/10v
10uF/10v
AL1
C0805/SMD
C0805/SMD
R1757
R1757
NS/10K
NS/10K
C668
C668
10uF/10v
10uF/10v
AR1
C0805/SMD
C0805/SMD
R1764
R1764
NS/10K
NS/10K
NO PLUG: HPDET#
PLUG: HPDET#
HPDET#
=
=
HIGH
GND
DV33
R1644
R1644
10k
10k
P44
T73T73
P44
1
HP
2
GND
SLIM_phonejack
SLIM_phonejack
HEAD PHONE OUTPUT
NC3NC
5
L
6
R
7
L
4
R16161KR1616
R16151KR1615
1K
1K
T74T74
HPOUTL
HPOUTR
NUSTC_5380P1_V2
NUSTC_5380P1_V2
NUSTC_5380P1_V2
Title
Title
Title
LINE OUT
LINE OUT
LINE OUT
Drawn
Drawn
Document Number
Document Number
Document Number
Size
Size
Size
C
C
C
MT5380P1-V2
MT5380P1-V2
MT5380P1-V2
Date:Sheet
Date:Sheet
Date:Sheet
A
Drawn
Rev
Rev
Rev
V1
V1
V1
of
of
of
1415Thursday, December 04, 2008
1415Thursday, December 04, 2008
1415Thursday, December 04, 2008
7.3. Wiring Connection diagram
customer type
Haier type
special number
special technique
document number
export country
customer
brand
HL22FPB1
LA22F3W
DC14C0E0900
AT08SR1101US46
Am eric a
HAC
Haier
2
LCD PANEL
4
10
6
CN
3
Power
supply
and
inveter
6
CN11
2
CN
CN10
CN15
1
TUNER
5
您正在使用
ZWCAD2008i试用版
详情请查阅WWW.ZWCAD.COM
7
8
Remote Control Board
Assembly
9
Keypad Assembly
NO.
1
Mainboard
subassembly
2
3
Power supply board
4
5
6
7
8
9
10
Combination wire
Remote Control Board
Assembly
Keypad Assembly
Power cord
NAME
LCD Panel
LVDS wire
Speaker wire
Speaker
Serial NO.
DC14C0E0900M
0094001227CA
0094001224B
0090402338
0090402274
0094015071
0090403157C
0090719341
0090701136
0090403211A
Spec
0090719615
Quantity
1
1
1
1
1
2
1
1
1
1
32
Workout
Auditing
Standardization
Approve
8. MEASUREMENTS AND ADJUSTMENTS
The way to the factory mode menu:
1st, press nemu,
2en, input 8893,
Finished these operations ,system will be into the factory mode menu.
8 . 1 Version ,S/N, Panel Resoution
Version:The first line is the model Name and the second line is current software version.
8 . 2 Video
1
8.2.1,Auto Color
The option could only be used in the VGA and Component model. When we found the color in the two
models was abnormal. Then we can use the function to adjust it automatically.
8.2.2,Color Temperature
The function could adjust the Color Temperature., used when debugging.
8 . 3 Audio
Dolby Banner: When turn it “ON”, the model will be in Dolby authentication state.
Compression: Compression style. RF: Atv line:AV/S-Video/YPbPr/VGA/USB
Compression Factor: Compression state.
Downmix: output model. MTS System: used when debugging. The parameters only used when
debugging, no need to be modified.
2
8 . 4 Channel
Range Scan: The function could make it to search the channels by differentiation the analog and
digital channels.
Single RF Scan: Search channels in the frequency scope set in advance.
3
Factory Scan: According to ANTENNA-ANALOG---〉ANTENNA-DIGITAL---〉CABLE- ANALOG---〉
CABLE- DIGITAL to search channels, used only in project debugging.
Tuner Diagnostic: Project debugging setting, used to inspect the audio function.
8 . 5Gamma
Gamma:
Bright:GAMMA0.8 Middle:default settings in the programme Dark:GAMMA1.2
4
8 . 6 Backlight
Backlight: adjust the backlight.
8 . 7 Function
5
Burning Mode:
Turn it “ON” to enter the aging model, This is for factory run-in testing. The screen would display red,
green, blue and black screen repeatedly. Each color screen could be exam at that time.
Clean Storage:The function could make the model turn back to the factory default setting.
6
Remark:
The date of the chart only is a example, please don’t adjust the factory mode base on it.
7
9. Trouble shooting
9.1. Simple check
No Picture,no sound
Blank screen
No sound
Poor sound
No picture in some channel
No color for some channel
program(black and white)
Verify if the television is properly plugged
Verify if the television is properly supplied power
Verify if electricity is available
Verify if correct signals are input
Press INPUT button to change signal input to TV input
Restart the television of power supply is interrupted
Press Mute button and verify if Mute mode is set.
Switch to otger channel and verify if the same problem
happens.
Press VOL+ button to see of he problem can be solved.
Verufy if sound system is correct .Refer to some chapter for
adjust.
Verify if correct channel is selected.
Adjust the antenna.
Make adjustments by Fine Tune and MANUAL Scan.
Verify if the same problem exists in other channels.
check out of picture and sound system.
Refer to relative instructions in the Manual for color adjust.
Spots with some or all pictures
Verify if the antennal is correctly connected.
Verify if the antennal is in good condition.
Make fine adjustment of channel.
43
9-2. Power Supply Board failure check.
Check (F1/3A) for 12V?
N
Check F1 and peripheral power supply
F1 is damaged?
NY
Check power
OK
supply net
follow F1
1:Power supply(U7、U9))
2:Reset signal
3:Crystal
Change U1/MP1410ES-LF or
Check U6/MCU
D17/SK34A-SMA
Check E33/470μF/16V for 5V
N
Turn on the TV-set(By button or
remote control)
N
Y
Check U1 for 5V
output
Check L9/47μH
Y
Y
Were those
LDO(U10,U13,U16,U18,U19,
etc.)worked normal?
LDO was damaged
or the loader is in
YN
short circuit
YN
OK
It’s normal but the
voltage is high
Check Pin No.4 of
U1/MP1410-ES or
change U1
It’s normal but the
voltage is Low
E33 was damaged
or the loader is in
short circuit
9.3. Main board failure check
State: No Sound
Pass
Pass
Pass
Pass
Pass
No Sound
(All Mode)
Check the input
Source
Check the input/output
Of IC U13 of Main B/D
Check the input/output
Of IC U55 of Main B/D
Check the input/output
Of IC U2 of Main B/D
Check the Speaker
Check the Sperker
wire
Fail
Fail
Fail
Fail
Fail
Change Source input
Re-soldering or change
IC U13
Re-soldering or change
IC U55
Re-soldering or change
IC U2
Change the Speaker
45
State:No picture
No Raster on Panel
Pass
Pass
Pass
Check the backlight B/D
Pass
Check the input/output of
jack CN3 of Main B/D
Check the input/output of
Jack CN4 of Main B/D
Check the Panel wire
Change the panel
Fail
Fail
Fail
Fail
Change the backlight B/D
Re-soldering or change
IC UA1 and RNA1-17
Re-soldering or change
IC U13
Change the Panel wire
46
9.4. Pannel failure
Failure Mode
Part Name Description Phenomena Failure cause
Block Defect :TCP cracking or cracking
Dim or L/D :TCP Sunken
:TCP lead cracking
:ACF bonding short
:Awful environment and something electric enter into
LCD
:Mis-align between TCP and Panel
:Panel failure
:TCP failure
TCP
V B/D Vertical bar
V Dim
V L/D
H B/D
H Dim
Vertal gray
line
Vertical color
line(light or
dark forever)
Horizontal
bar
Horizontal
gary line
Horizontal
H L/D
line(light or
dark forever)
Failure Mode
Part Name Description Phenomena Failure cause
Bright dot dark
dot in pannel
Bladder in
Polarizer
Polarizer Scratch
Incoming Inspection Standard
Bladder between Polarizer and top glass
Tine or rigidity arose
Panel or
Polarlzer
Dot Defect
Polarizer
Bubble
Polarizer
Scratch
Circuit
F/M inside
Polarizer
Abnormal
Display
Eyewinker inside
Polarizer
Abnormal Display
Eyewinker inside Polarizer
1. Chip lose action
2. IC ahort or jointiog bad
47
3. Pannel and vsc connect bad
Flashing
Bright and dark
display alternately
Failure Mode
Part Name Description Phenomena Failure cause
Circuit
White
Screen
Black
Screen
FIIcker Crosstalk
Abnormal
Color
Abnormal
Color
B/L normal, only
white screen
display
B/L normal, only
Black screen
display
Only color
abormal
Only color
abnormal
Maybe caused by surge current and EDS
LCD Vcom imbalance
Capacitance improper bring crosstalk inside LCD
pannel
1. Chip lose action
2. IC short or jointion bad
3. Pannel and vsc connect bad
Failure Mode
Part Name Description Phenomena Failure cause
Mechanlcal
Nolse
Ripple Connectric circle
B/L off B/L lose action
B/L dark
B/L wire
damaged
When turn
panel,appear
cacophony
B/L brightness
darker than normal
B/L wire damaged
Caused by Mechanica noise of backlight
unit
Causeed by between mechanism and
pannel
*Connect badness between wire and
electrode
*Connect badness
Short between wire and electrode
Operation abnormal or systemic noise
48
B/L wire
open
B/L shut
down
F/M
Without backlight Operation abnormal or systemic noise
B/L shutdown in
sometime
F/M in
B/L ,white,balck
Rotundity or
wirelike
Short bitween lamp housing and wire, Because
consume power too much
F/M in B/L unit
Failure Mode
Part Name Description Phenomena Failure cause
Brightness at
Light
leakage
bottom of LCM
brighter than
normal
B/L unit badness
Mechanlcal
or B/L
Uniformity
Mount hole
B/L brightness
asymmetric
Lack screw or
screw damage
Sheet in B/L unit is uneven
*Lack screw
Screw damage
49
Sincere Forever
Haier Group
Haier Industrial Park, No. 1, Haier Road
266101,Qingdao,China
http://www.haier.com
48
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