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.
CONTENTS
Chapter 1.General Information
Service Manual
Model No.:LEA-19H03P
1-1. Document Information
1-2. General Guidelines
1-3. Important Notice
1-3-1. Follow the regulations and warnings ..................................................... 3
1-3-2. Be careful to the electrical shock ........................................................... 3
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
kind 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
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 placed on top of or above the TV.
1-3-3. Electro static discharge (ESD)
3
Service Manual
Model No.:LEA-19H03P
Some semiconductor (solid state) devices can be damaged easily by static electricity.
Such components commonly are called Electrostatically Sensitive (ES) Devices. The following
techniques should be used to help reduce the incidence of component damage caused by
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"
components. The following techniques should be used to help reduce the ncidence of component
damage caused by static by static electricity.
1. Immediately before handling any semiconductor component or semiconductor-equipped
assembly, drain off any electrostatic charge on your body by touching a known earth ground.
Alternatively, obtain
should be removed to prevent potential shock reasons prior to applying power to the unit under
test.
and wear a commercially available discharging wrist strap device, which
2. After removing an electrical assembly equipped with ES devices, place the assembly on a
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.
1-3-5. 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.
1-3-6. 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 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
4
Service Manual
Model No.:LEA-19H03P
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:
may result in an explosion hazard.
2. Test high voltage only by measuring it with an appropriate high voltage meter or other voltage
measuring device (DVM, FETVOM, etc) equipped with a suitable high voltage probe.
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 nonabrasive applicator; 10% (by volume) Acetone and 90% (by volume) isopropyl alcohol (90%-99%
strength).
CAUTION:
Unless specified otherwise in this service manual, lubrication of contacts is not required.
Capacitors may result in an explosion hazard.
5. Do not defeat any plug/socket B+ voltage interlocks with which receivers covered by this
service manual might be equipped.
A wrong part substitution or incorrect polarity installation of electrolytic capacitors
This is a flammable mixture.
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
the test receiver positive lead.
Always remove the test receiver ground lead last. Capacitors may result in an explosion
hazard.
8. Use with this receiver only the test fixtures specified in this service manual.
CAUTION:
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.
11. 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.
Do not connect the test fixture ground strap to any heat sink in this receiver.
receiver ground lead to the receiver chassis ground before connecting
5
Service Manual
Model No.:LEA-19H03P
12. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
13. Use only an anti-static type solder removal device. Some solder removal devices not
classified as "anti-static" can generate electrical charges sufficient to damage ES devices.
14. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to
damage ES devices.
15. 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).
16. 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:
precautions.
17. Minimize bodily motions whenhandling unpackaged replacement ES devices. (
harmless motion such as the brushing together of your clothes fabric or the lifting of your foot
from a carpeted floor can generate static electricity sufficient to damage an ES device.)
Be sure no power is applied to the chassis or circuit, and observe all other safety
Otherwise
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.
6
1-4. 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, 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.
Service Manual
Model No.:LEA-19H03P
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.
7
Service Manual
Model No.:LEA-19H03P
Chapter 2. Specification
2-1. Specification list
ModelLEA-19H03P
Screen Size19 inches
Aspect Ratio16:9
Resolution1366*768
Response Time (ms)5ms
Angel of ViewH:170/V:160
Color Display16.7M
No. of Preset Channels256
OSD LanguageEnglish Russian
Color SystemSECAM
Audio System BG
Audio Output Power (Built-in) (W)2.5W*2
Audio Output Power (outer) (W)No
Total Power Input (W)30W
Voltage Range (V)AC100V~240V
Power Frequency (Hz)50~60Hz
Time of Sleep Timer (MINS)120Min
Net Weight (KG)3.2
Gross Weight (KG)4
Net Dimension (MM)461*349*160
Packaged Dimension (MM)540*120*405
8
2-2. External pictures (four faces)
Service Manual
Model No.:
Front Side
Left Side
9
Service Manual
Model No.:
Right Side
10
Back Side
Chapter 3. Disassemble and Assemble
Service Manual
Model No.:
3-1. Remove the Stand
1. Lay down the unit so that back cover faces
upward.
picture 1
1. Remove the 2 and 3 screws indicated in
picture 1.
2.Uncover the equipment, the FFC wire and
LVDS wire are shown below(See picture 3).
Remove the FFC wire and LVDS wire from
the panel.
2. Remove the 1 screw from the back cover
which are indicated with the number in the
picture above.
3-2. Remove the Back Cover
picture 3
3. Then remove the back cover from the unit.
(See picture 4).
picture 4
11
Service Manual
Model No.:
12
3-3. Remove the Main Board &
Small Board
There are four boards in the machine:
A:Remote Control Board;B:Main Board;C:LED
Driver Board ;D:Keypad Board (See picture 5).
picture 7
3-3-3. Remove the Keypad Board
There's no screw in this board,pull the keypad
board out from Front Cabinet directly.
picture 5
3-3-1. Remove the Mainboard and the
Driver Board
Remove the six screws indicated in picture 6.
Take out the mainboard and the drive board.
picture 8
3-3-4. Remove the Speakers
Remove the two screws indicated in picture 9
Take out one speaker,then another as this.
picture 6
3-3-2.Remove the Remote Control Board
Remove the screw indicated in picture 7.
Take out the mainboard and the drive board.
picture 8
Service Manual
Model No.:
Chapter 4. Location of Controls and Components
4-1. Board Location
No.Parts numberDescription
A Borad0090720951BRemote Control Board
B BoradDZZz0XF0E0400Main Board
C Borad0090722687 LED Driver Board
D Borad0090722685Keypad Board
4-2. Main Board
13
Service Manual
Model No.:
14
4-2-1. Function Description:
Main Board
Process signal which incept from exterior equipment then translate into signal that panel can display.
4-2-2. Connector denition
Main board connector
CNE1CNE2
Pin number Signal name Pin numberSignal name
1
+5V
1
GND
2IR2KEY1
3RED3KEY2
4GREEN
5GND
CNB1(No use)CNB2(No use)
Pin number Signal name Pin numberSignal name
1
GND
1
+5V
2TXD2GND
3RXD3SCL
4+5V4SDA
CON1CNC1
Pin number Signal namePin numberSignal name
1
PS_ON
1
L_N
2GND2L_P
3GND3R_N
4ADJ4R_P
5ON/OFF
6+12V
7+12V
Notes:
CNE1:Remote Control connector ; to A Board
CNE2:Keypad connector ; to D Board
CNB1:Sensitization connector
CNB2:Upgrade connector
CON1:Driver connector ; to C Board
CNC1:Speaker connector ; to Speaker
CND3:LVDS connector ; to Panel
Fu nction descrip tion:receive r emote control
signal
Connector denition:
see next page
Function description:Display program
Service Manual
Model No.:
16
Pin numberSignal nameDescription
1 RXO0- minus signal of odd channel 0(LVDS)
2 RXO0+ plus signal of odd channel 0(LVDS)
3 RXO1- minus signal of odd channel 1(LVDS)
4 RXO1+ plus signal of odd channel 1(LVDS)
5 RXO2- minus signal of odd channel 2(LVDS)
6 RXO2+ plus signal of odd channel 2(LVDS)
7 GND GND
8 RXOC- minus signal of odd clock channel (LVDS)
9 RXOC+ plus signal of odd clock channel (LVDS)
10 RXO3- minus signal of odd channel 3(LVDS)
11 RXO3+ plus signal of odd channel 3(LVDS)
12 RXE0- minus signal of even channel 0(LVDS)
13 RXE0+ plus signal of even channel 0(LVDS)
14 GND GND
15 RXE1- minus signal of even channel 1(LVDS)
16 RXE1+ plus signal of even channel 1(LVDS)
17 GND GND
18 RXE2- minus signal of even channel 2(LVDS)
19 RXE2+ plus signal of even channel 2(LVDS)
20 RXEC- minus sig n a l of even clock ch a n n e l
21 RXEC+ plus signal of even clock channel (LVDS)
22 RXE3- minus signal of even channel 3(LVDS)
23 RXE3+ plus signal of even channel 3(LVDS)
24 GND GND
25 NCNC
26 NC Test pin (Can’t connect to GND)
27 NCNC
28 VCC Power supply input voltage(5.0 V)
29 VCC Power supply input voltage(5.0 V)
30 VCC Power supply input voltage(5.0 V)
ANT.
Service Manual
Model No.:
17
Note:
* It is recommended that you'd better use 75Ω coaxial cable to remove
the disturbance caused by airwave.
* Don't bind antenna cable and electric wire together.
Chapter 5. External Equipment Connections
5-1. Antenna Connection
Antenna or Cable Service without a Cable Box Connections.
For optimum picture quality, adjust antenna direction if needed.
To improve picture quality in a poor signal area,
purchase and install a signal amplier.
If the antenna needs to be split for two TV’s,
install a “2-WaySignal Splitter” in the connections.
If the antenna is not installed properly, contact
your dealer for assistance.
Note:
All cables shown are not included with the TV.
Service Manual
Model No.:
18
PC/DVI AUDIO IN
Pb
PC IN
Y
HDMI IN
Pr
DIGITAL OUT
(COAXIAL)
PC/DVI AUDIO IN
Pb
PC IN
Y Pr
HDMI IN
DIGITAL OUT
(COAXIAL)
5-2. VCR Connection
To avoid picture noise (interference), leave an
adequate distance between the VCR and TV.
Connect the DVD video outputs (Y, P
b/Cb
, Pr/
Cr) to the COMPONENT (Y, Pb/Cb, Pr/Cr) input
jacks on the TV and connect the DVD audio
outputs to the AUDIO jacks on the TV’ as
shown in the gure.
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:
A:
Connect the audio and video cables from the
VCR’s 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).
B:
Insert a video tape into the VCR and press
PLAY on the VCR. (Refer to the VCR owner’s
manual.)
C:
Select the input source with using the SOURCE
button on the remote control, and then press
5
button to conrm.
5-3. DVD Connection
How to connect:
/6button to select the source, press the
How to use
A:
Turn on the DVD player, insert a DVD.
B:
Use the
control,
SOURCE
and then press 5/6button to
COMPONENT mode
button on the remote
to select
, press the button to
conrm.
C:
Press Play button on external equipment for
program play.
D:
Refer to the DVD player’s manual for operating
instructions.
5-4. HDMI or DVI Connection
To watch digitally broadcast programs, purchase
and connect a digital set-top box.
How to connect:
Use the TV’s COMPONENT (Y, Pb/Cb, Pr/
Cr) INPUT jacks, VGA or HDMI port for video
connec t i ons, d e pending on y our s e t -top
box connections available. Then, make the
corresponding audio connections.
Service Manual
Model No.:
19
Y Pb
DIGITAL OUT
HDMI IN
(COAXIAL)
PC/DVI AUDIO IN
Pr
/
HDMI IN
DIGITAL OUT
(COAXIAL)
PC/DVI AUDIO IN
Y Pb Pr
PC IN
How to use:
A:
Turn on the digital set-top box.
(Refer to the owner’s manual for the digital set-top
box.)
B:
Use SOURCE on the remote contralto select
PC or HDMI (Y, Pb/Cb, Pr/Cr) mode.
C:
Press Play button on external equipment for
program play.
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.
5-5. PC Connection
How to connect:
A:
Use the TV’s PC IN port for video connections.
B:
T h e n , m a k e th e co r r e s p o n d i ng au d i o
connection. If using a sound card, adjust the
PC sound as required.
How to use:
A:Turn on the PC and the TV.
B:
Turn on the display by pressing the POWER
button on the TV’s remote control.
C:
Use SOURCE on the remote control to select PC
source.
D:
Check the image on your TV. There may be
noise associated with the resolution, vertical
Note
Avoid keeping a fixed image o n the TV’s
screen for along period of Time. The fixed
image may become permanently imprinted on
the screen.
The synchronization input form for Horizontal
and Vertical frequencies is separate.
To obtain the best picture, do not play the USB,
YPbPr, HDMI or PC source at the same time.
5-6. Monitor Out Connection
The TV has a special signal output capability
which allows you to hook up a second TV or
monitor.
Co nnect the sec ond TV or monitor to the
TV’s AV OUT. See the Operating Manual of
the second TV or monitor for further details
regarding that device’s input settings.
Note
Component, PC, HDMI input sources cannot
be used for Monitor out.
W h e n co n ne c ti n g wi t h ex te r na l a u d i o
equipments, such as amplifiers or speakers,
please turn the TV speakers off.
Service Manual
Model No.:
20
DIGITAL OUT
HDMI IN
(COAXIAL)
Plug a set of headphones
Into the 3.5mm mini-jack
socket on the rear panel
of the set.
5-7.Headphones Connection
3.I f y o u c aus e a st atic di sch a rge wh en
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.
5-9.Recommendation input Format
Recommendation HDTV/SDTV(YPbPr/
YCbCr) input format
You can connect a set of headphones to your
set if you wish to watch a TV program without
disturbing the other people in the room.
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.
Sequence
Number
1480i/480p60
2576i/576p50
3720p50/60
41080i/1080p50/60
Format
Refresh Frequency
(Hz)
Rec omm e nda tio n P C conn ect i on
input format
sequence
number
1640*480@60Hz31.560
2800*600@60Hz37.8860
3
Format
1024*768@60Hz
(Recommendatory)
H-Frequency
(KHz)
48.3660
V-Frequency
(Hz)
Recommen dation DV I conn e ction
input format
Sequence
Number
1640*48060
Resolution
Refresh Frequency (Hz)
5-8.Power Source
Use the AC polarized line cord provided for
operation on AC.
Inser t the AC cord p l ug i n to a sta n d ard
polarized AC outlet.
Note
1.Never connect the AC line cord plug to other
than the specified voltage. Use the attached
power cord only.
2.If the polarized AC cord does not fit into a
non polarized AC outlet, do not attempt to le
or cut the blade. It is the user’s responsibility to
have an electrician replace the obsolete outlet.
2800*60060
31024*76860
Recommendation HDMI connection
input format
Sequence
Number
1480i/480p60
2576i/576p50
3720p50/60
41080i50/60
Format
Refresh Frequency (Hz)
Chapter 6. Operation Instructions
6-1. Front Panel Controls
SOURCE
Service Manual
Model No.:
1. TV/AV :All input source display and OK conrm.
2. CH(+/-) :Program minus and plus, menu options
3. VOL(+/-) :Volume increase and decrease, menu set and entry
4. MENU :Menu display
5. POWER :Is used to activate the display or return to standby mode.
6-2. BACK Panel Controls
5
1
2
1
2
3
4
5
COMPONENT IN
AV IN
PC IN
AV OUT
DC IN
6
HEADPHONEHeadphone
6
audio output terminal.
789
DIGITAL OUT
(COAXIAL)
7
8
HDMI IN
PC IN
USB
DIGITAL
OUT
HDMIConnect a signal to HDMI
9
PC/DVI
10
AUDIO
Connect a USB ash drive to view
PPEG2 videos,JPEG images or listen to
MP3 songs.
Digital/Coaxial output terminal
Connect a PC/DVI Audio device to these
jacks
10
3
4
21
1
2
3
4
5
5
TX1TX1
R2
NC/10RR2NC/10R
TX2TX2
+5V_DVD
TX3TX3
TX4TX4
L8NC/FB-0603-120-2AL8NC/FB-0603-120-2A
TX5TX5
GPIO_4
GPIO_5
+12V
R23
R23
NC/10K
NC/10K
GPIO_5
GPIO_4
R16
R16
NC/1K
NC/1K
Q5
1
NC/2N3904Q5NC/2N3904
32
GPIO_5 3
GPIO_4 3
R18
R18
NC/4.7K
NC/4.7K
CNA4
CNA4
1
2
3
4
5
NC/5PIN_2.0
NC/5PIN_2.0
DVD POWER SUPPLY
DD
Power for MT8222 only ( Always on )
LDO#1
+5V_ON
CB6
CB6
0.1uF
0.1uF
CC
5V to 3.3V
Estimated Power consumed : ??? A
Switch Regulator
DC12V
L2 FB-0805-220-3AL2 FB-0805-220-3A
+5V_ON
L202 NC/FB-0805-220-3AL202 NC/FB-0805-220-3A
CE8
CE8
+
+
100uF/16V
100uF/16V
BB
Core Power 1.1V
0.1uF
0.1uF
CB7
CB7
AP1084-ADJ
AP1084-ADJ
U8
U8
TO-252-3/SMD
TO-252-3/SMD
3
OUT
IN
GND
1
R0402/SMD
R0402/SMD
100K
100K
R1163
R1163
C511 10nF
C511 10nF
1 2
C0402/SMD
C0402/SMD
D62
D62
1 2
NC/SX34
NC/SX34
0.923 x (1+2K/10K) =
1.1V
2
U821
U821
1
BS
2
IN
3
SW
GND4FB
MP1482
MP1482
SOP8/SMD
SOP8/SMD
22uH/2A
22uH/2A
L5-9L27
L5-9
12
+3V3
R13
R13
110_1%
110_1%
R0603/SMD
R0603/SMD
R14
R14
180_1%
180_1%
R0603/SMD
R0603/SMD
+
+
CE15
CE15
220uF/16v
220uF/16v
Vout = 1.25 x ( 1 + 180/ 110 ) = 3.3V
MP1482_ON
SS
EN
Comp
L27
C513
C513
0.1uF
0.1uF
8
7
6
5
0.01uFC20.01uF
C2
C410
C410
C0402/SMD
C0402/SMD
C11911nF/NCC1191 1nF/NC
R116210K
R116210K
R0402/SMD
R0402/SMD
R2851
R2851
2K
2K
R0402/SMD
R0402/SMD
CB441
CB441
0.1uF
0.1uF
470uF/10v-LowESR CAP
470uF/10v-LowESR CAP
+3V3
GND
R1164
R1164
3.3nF
3.3nF
12
+
+
DV50
CB5
CB5
0.1uF
0.1uF
2.2K
2.2K
R0402/SMD
R0402/SMD
CE1
CE1
C4
NC/10nFC4NC/10nF
DV10
4
Q4
Q4
1
SOT23/SMD
SOT23/SMD
LDO#2
+3V3
SOT23/SMD
SOT23/SMD
23
NC/AO3401
NC/AO3401
Q54
Q54
NC/2N3904
NC/2N3904
CB891
CB891
0.1uF
0.1uF
32
C3
NC/0.1uFC3NC/0.1uF
3
MP1482_ON
1
+5V_DVD
U3
U3
IN
R52
R52
AP1117-ADJ
AP1117-ADJ
OUT
GND
1
NC/1K
NC/1K
DC12V
SOT223/SMD
SOT223/SMD
2
P_ONOFF
R0402/SMD
R0402/SMD
SW_POWER
L4
L4
FB-0805-220-3A
FB-0805-220-3A
CE116
CE116
100uF/16V
100uF/16V
R162247KR162247K
+
+
R11
R11
100
100
R0402/SMD
R0402/SMD
R12
R12
0
0
SW_POWER
0.1uF
0.1uF
C403
C403
L10
L10
FB-0805-220-3A
FB-0805-220-3A
CE846
CE846
10uF/10v
10uF/10v
C1171 10nF
C1171 10nF
1 2
R1619
R1619
CE6
CE6
10uF/10v
10uF/10v
+
+
3
R0402/SMD
R0402/SMD
R600100K
R600100K
1 2
C0402/SMD
C0402/SMD
D130
D130
NC/SX34
NC/SX34
AV12
CB860
CB860
0.1uF
0.1uF
47K
47K
+
+
C672
C672
0.1uF/NC
0.1uF/NC
+
+
1
U826
U826
1
BS
2
IN
3
SW
GND4FB
MP1482
MP1482
SOP8/SMD
SOP8/SMD
22uH/2A
22uH/2A
L5-9L44
L5-9
12
CE859
CE859
100uF/16v
100uF/16v
CAP5-2.5MM
CAP5-2.5MM
1
C671
C671
0.1uF/NC
0.1uF/NC
+5V_ON
R1621
R1621
100k
100k
R1620
R1620
10K
10K
Q45
Q45
2N3904
2N3904
32
Comp
DC12V
SS
EN
L44
C404
C404
0.1uF
0.1uF
8
7
6
5
CE117
CE117
220uF/16V
220uF/16V
CAP6.3-2.5MM
CAP6.3-2.5MM
R1618
R1618
100K
100K
R1617
R1617
10K
10K
Q44
Q44
2N3904
2N3904
32
C1172
C1172
R5042.7K 1%
R5042.7K 1%
R505
R505
12K 1%
12K 1%
R0603/SMD
R0603/SMD
+
+
C406
C406
0.1uF
0.1uF
+5V_ON
+
CE68
+
CE68
100uF/16v
100uF/16v
U49
U49
1
2
3
45
FDS9435
FDS9435
SOP8/SMD
SOP8/SMD
R2790
R2790
2.2K
2.2K
3.3nF
3.3nF
12
R0402/SMD
R0402/SMD
C0402/SMD
C0402/SMD
C4071nF/NCC4071nF/NC
R0603/SMD
R0603/SMD
ONLY FOR USB POWER
CB219
CB219
0.1uF
0.1uF
U50
U50
1
8
2
7
3
6
45
FDS9435
FDS9435
SOP8/SMD
SOP8/SMD
VCC
8
7
6
+5V_ON
TYPE/PACKAGE?
+12V
CB989
CB989
0.1uF
0.1uF
2
+3V3
R28454.7RR28454.7R
AV12 3,4
DV10 3,4
VCC 6,7,11,13
DC12V
TX6TX6
TX7TX7
TX11TX11
TX12TX12
+5V_ON
Q53
Q53
32
+9V
+
+
CE69
CE69
220uF/16v
220uF/16v
L5
L5
2009/11/11
R1712
R1712
4.7K
4.7K
1
FB-0805-220-3A
FB-0805-220-3A
TX8TX8
TX9TX9
TX10TX10
R41
R41
10K
10K
+3V3
+12V
+12V
+5V_ON
+5V_ON
+5V_TUNER
+5V_TUNER
+3V3_ON
+3V3_ON
DDRV
DDRV
UP34
GND
VCC
DIMMING
BL_ON/OFF
P_ONOFF
AV12
DV10
+12V
R28444.7RR28444.7R
AV12
DV10
VCC
VCC
J2
J2
1
3
2
TJC3-7A
TJC3-7A
DC_JACK
DC_JACK
DC_IN_HAIER
DC_IN_HAIER
CON1
CON1
SW_POWER
C646
C646
0.1uF
0.1uF
7
6
BL_ON/OFF
5
DIMMING
4
3
2
1
2N3904
2N3904
SOT23/SMD
SOT23/SMD
+
+
R43
R43
R511KR51
CE67
CE67
100uF/16v
100uF/16v
NC/1K
NC/1K
1K
1
+3V3 3,4,6,7,11,13
+12V 12,13
+5V_ON 6,7,8
+5V_TUNER 10,14
+3V3_ON 3,4,6,7,11,13
DDRV 3,4,5
UP343,7
GND 1,3,4,5,6,7,8,9,10,11,12,13,14
VCC6,7,11,13
DIMMING 13
BL_ON/OFF 13
P_ONOFF 7
+12V
P_ONOFF
UP34
Works at normal mode
LDO#3
VCC
AA
5V to DDRV
Estimated Power consumed : ??? A
If use sdram ,NC FB14 CE9 CB574 U11 R956 R958 CB573 CE5
The way to the factory mode menu:
Step 1: Press Menu,
Step 2: Input 8893,
Step 3: Press “OK”
System will be into the factory mode menu when 3 steps above are done.
8-1-2.How to exit
If you want to exit this factory menu, please press the button ”Exit” on the remote.
8-2. Measurements and Adjustments
8-2-1. Factory Menu 1
Source
Auto Color
Power On ModeOff:always standby;On:always power on
Signal Reset
Factory ResetFor factory only
EEP INITReset all date return to factory state
SWSoftware Version
Press
When we found the color was abnormal,
Press
to choose the source
3/
button to choose the default Signal
3/
prees button
to adjust.
Service Manual
Model No.:
24
8-2-2. Factory Menu 2
Color TemperatureAdjust the Color Temperature: standard,warm,cool;used when debugging
R Gain/ G Gain/ B
Gain / R O ffset/ G
Offset/ B Offset
Color Temperature value in Current source
8-2-3.Factory Menu 3
Service Manual
Model No.:
25
Video Mode
Contrast/ Brightness/ Tint/ Color/
Sharpness
Con tra s t M in / C o nt r ast Ma x/
Brightness Min/ Brightness Max/
Tint Min/ Tint Max/Color Min/Color
Max/ Backlight Min/ Backlight Max
Video Mode in Current source,press
Value in Standard mode,corresponding OSD defaut value
Register adjust area
to choose the source
3/
8-2-4.Factory Menu 4
Audio Mode
Treble/BassRegister adjust area
Volume 15/25/50/75/100 Adjust volume curve
Audio mode in current source,press
to choose the source
3/
Service Manual
Model No.:
26
8-2-5.Factory Menu 5
Every source switch,you can choose each source by it.Press
to choose On or Off
3/
8-2-6.Factory Menu 6
Some function switch,such as language or power,you can choose it by press
3/
Chapter 9. Trouble shooting
Service Manual
Model No.:
27
9-1. Simple check
Verify if the television is properly plugged
No picture/ No sound
Blank screen
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
No sound
Poor sound
No picture in some channel
No color for some channel program
(black and white)
Spots with some or all pictures
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.
Verify if the antennal is correctly connected.
Verify if the antennal is in good condition.
Make ne adjustment of channel.
Horizontal/ vertical bars or picture
shaking
Television out of control
Check for local interference such as an electrical appliance
or power tool.
Disconnect the television from power supply and 10
seconds later, connect the television to the power supply.
If the problem still exists, contact authorized after-sales
service for technical assistance.
No Sound
(All Mode)
Check the input
Source
Change Source input
Check the
input/output
Re-soldering or change
IC U13
Check the
input/output
Re-soldering or change
IC U55
Check the
input/output
Re-soldering or change
IC U2
Check the
Speaker
Change the Speaker
Check the
Sperker wire
Service Manual
Model No.:
28
9-2. Mainboard Failure Check
Phenomena: No Sound
Fail
Pass
Pass
Pass
Pass
Fail
Fail
Fail
Fail
Pass
9-3. Pannel Failure
Service Manual
Model No.:
29
Failure Mode
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
Vertical color line(light or
dark forever)
Horiz o n t a l line(light or
dark forever)
V B/DVertical bar
PartNameDescriptionPhenomenaFailure cause
V DimVertal gray line
V L/D
TCP
H B/DHorizontal bar
H DimHorizontal gary line
H L/D
Service Manual
Model No.:
30
Bladder between Polarizer and
top glass
1.Chip lose action
2.IC ahort or jointiog bad
3.Pannel and vsc connect bad
Dot DefectBright dot dark dot in pannelIncoming Inspection Standard
Polarizer BubbleBladder in Polarizer
Polarizer ScratchPolarizer ScratchTine or rigidity arose