Haier LEY22T1000HF Schematic

SERVICE MANUAL

LED TV

Model No.

MSD308

LEY22T1000HF

Chassis

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 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.

Service Manual

Model No.:

Chapter 1: General Information

1-1. Table of Contents

1. General Information...........................................................................

1-1. Table of Contents

1-2. General Guidelines
1-3. Important Notice
1-4. How to Read this Service Manual

6SHFL¿FDWLRQV....................................................................................

3. Location of Controls and Components...........................................

3-1. Board Location

3-2. Main Board & AV Board

3-3. LCD Panel

4. Disassemble and Assemble..........................................................

4-1 Remove the Pedestal

4-2 Remove the Back Cover 12

4-3 Remove the Adhesive Tape 12

4-4 Remove the Main Board 13

1

1
3
3
6

6

88

8

8

10

12

12

4-5 Remove the Speaker 13

4-6 Remove the Remote Control Board 14

5. Installation Instructions..…....………………...........………….........

5-1 External Equipment Connections 15

5-2 HDMI Connections 18

6. Operation Instructions....…....………………...........………….........

6-1 Front Panel Controls

6-2 Back Panel Controls

6-3 Universal Remote Control

7. Electrical Parts…....………………...........………….........................

7-1. Block Diagram

7-2. Circuit Diagram

7-3. Wiring Connection Diagram

15

21

21

21

22

23

23

24

33

- 01 -

Service Manual

Model No.:

8. Measurements and Adjustments........…………............................

8-1. How to enter into the factory model

8-2. How to update software
8-3. How to enter into the Hotel Model

9. Trouble-shooting…………..............................................................

9-1. Simple Check 48

9-2. Main Board Failure Check

9-3. Panel Failure

10. DVD OPERATION…………..............................................................

11. DVD Trouble shotting…………..............................................................

34

45

46
47

48

49

59

64

67

- 02 -

Service Manual

Model No.:

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

7RSUHYHQWGDPDJHZKLFKPLJKWUHVXOW LQ HOHFWULFVKRFNRU¿UHGR QRW H[SRVHWKLV79VHW

to rain or excessive moisture. This TV must not be exposed to dripping or splashing water,

DQGREMHFWV¿OOHGZLWKOLTXLGVXFKDVYDVHVPXVWQRWEHSODFHGRQWRSRIRUDERYHWKH79

1-3-3. 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
techniques should be used to help reduce the incidence of component damage caused by
electros static discharge (ESD).

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.

8VHWKHJHQHZLQJSDUWVVSHFL¿HGSDUWV

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

Ɣ&RPSRQHQWVLGHQWL¿HGE\PDUNKDYHVSHFLDOFKDUDFWHULVWLFVLPSRUWDQWIRUVDIHW\

- 03 -

Service Manual

Model No.:

1-3-6 Safety Check after Repairment

&RQ¿UPWKDWWKHVFUHZVSDUWVDQGZLULQJZKLFKZHUHUHPRYHGLQRUGHUWRVHUYLFHDUHSXW

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

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 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 non-abrasive applicator; 10% (by volume) Acetone and 90% (by volume)
isopropyl alcohol (90%-99% strength).

CAUTION:7KLVLVDÀDPPDEOHPL[WXUH
8QOHVVVSHFL¿HGRWKHUZLVHLQWKLVVHUYLFHPDQXDOOXEULFDWLRQRIFRQWDFWVLVQRWUHTXLUHG

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.

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.

8VHZLWKWKLVUHFHLYHURQO\WKHWHVW¿[WXUHVVSHFL¿HGLQWKLVVHUYLFHPDQXDO

CAUTION: 'RQRWFRQQHFWWKHWHVW¿[WXUHJURXQGVWUDSWRDQ\KHDWVLQNLQWKLVUHFeiver.

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

- 04 -

Service Manual

Model No.:

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 semiconductor­equipped 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.

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.

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

FODVVL¿HGDVDQWLVWDWLFFDQJHQHUDWHHOHFWULFDOFKDUJHVVXI¿FLHQWWRGDPDJH(6GHYLFHV

'RQRWXVHIUHRQSURSHOOHGFKHPLFDOV7KHVHFDQJHQHUDWHHOHFWULFDOFKDUJHVVXI¿FLHQW

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

OLIWLQJRI\RXUIRRWIURPDFDUSHWHGÀRRUFDQJHQHUDWHVWDWLFHOHFWULFLW\VXI¿FLHQWWRGDPDJH

an ES device.)

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 of each product and the
Software Version can be found at the Spare Parts List.

2. Spare Part No. and Description

<RXFDQ¿QGWKHPLQWKH6SDUH3DUWV/LVW

- 05 -

1-3-8. 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.

1-4. How to Read this Service Manual

Using Icons:

,FRQVDUHXVHGWRDWWUDFWWKHDWWHQWLRQRIWKHUHDGHUWRVSHFL¿FLQIRUPDWLRQ7KHPHDQLQJRI

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.

Service Manual

Model No.:

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.

Reference:

A “reference” guides the reader to other places in this binder or in this manual, where he/

VKHZLOO¿QGDGGLWLRQDOLQIRUPDWLRQRQDVSHFL¿FWRSLF

- 06 -

Service Manual

Model No.:

6SHFL¿FDWLRQV

Model LEY22T1000HF

Screen Size 21.5 inch

Aspect Ratio 16:9

Resolution 1920*1080

Response Time (ms)

Angel of View 176o

Color Display16.7M

5.0 (GRAY TO

GRAY)

No. of Preset Channels 1000

OSD LanguageEnglish

Color System PAL/SECAM

Audio System DK, BG, I, M, L, L'

Audio Output Power

3W×2

(Built-in) (W)

Audio Output Power

No

(outer) (W)

Tot al Power Input (W) 38W

Voltag

Power Frequency (Hz) 50~60Hz

Net Weight (KG) 3.35

Gross Weight (KG) 3.8

e Range (V)

AC 100-240V

Net Dimension (MM) 518.5*322*50

Packaged Dimension

518.5*363*160

(MM)

- 07 -

3. Location of Controls and Components

3-1 Board Location

Service Manual

Model No.:

A Board

No. Description

A Board Integration Mainboard

3-2 Main Board

DH1Q00M0600M

- 08 -

Service Manual

Model No.:

3-2-1 Function Description:

Main Board

Process signal which incept from exterior equipment then translate into signal that panel
can display.

&RQQHFWRUGH¿QLWLRQ

Main board connector

Keypad andremote connector (CN8)

3LQQXPEHU 6LJQDOQDPH 'HVFULSWLRQ

 /('B*





7

8

9

10

/('B5

STANDBY

,5 5(027(&21752/

*1'

9

NC

.(<

.(<

*1'

/$035('
/$03*5((1

*1'

32:(5)255(027(

Speaker connector (CN30)

Pin number Signal name Description
1 RSPK+ RSPK+
2 RSPK- RSPK­3 LSPK- LSPK­4 LSPK+ LSPK+

- 09 -

3-3. LED Panel

Service Manual

Model No.:

MTC215LED-P07H(CLAB215FA04 V4)

- 10 -

Service Manual

Model No.:

3-4-1.Connector de finition

PIN NO. REMARK FUNCTION

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 signal of even clock channel (LVDS)
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 NC NC
26 NC Test pin (Can’t connect to GND)
27 NC NC
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)

1) Keep the NC Pin and don’t connect it to GND or other signals.

2) GND Pin must connect to the ground, don’t let it be a vacant pin.

- 11 -

Service Manual

Model No.:

4. Disassemble and assemble

4-1 Remove the Pedestal

4-2Remove the Back Cover

/D\GRZQWKHXQLWVRWKDWUHDUFRYHU

faces upward

 5HPRYH WKHWKUHH VFUHZIURPWKH
UHDUFRYHULQGLFDWHGZLWKż

7KHQUHPRYHWKHSHGHVWDO

4-3. Remove the adhesive tape

5HPRYHWKHWKHVHVFUHZLQGLFDWHGRQ
¿JXUHDERYHE\ż

7KHQUHPRYHWKH EDFNFRYHUIURP WKH

unit.

Remove the adhesive tape indicated on the

¿JXUHDERYH

- 12 -

4-4 Remove the Main board

Service Manual

Model No.:

'LVFRQQHFWHG WKHFRXSOHU

CN5

5HPRYHWKH0DLQERDUG



CN8

CN800

CN19

CN30 CN804

CN805

CN18

4-5 Remove the speaker



Take out the speaker

- 13 -

Service Manual

Model No.:

4-6 Remove the remote control

take out the remote control

board

- 14 -

5. Installation Instructions

5-1 External Equipment Connections

Accessories

Service Manual

Model No.:

Remote Control

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.

User GUIDE

Battery

To improve picture quality from an antenna in a poor signal area, install a signal

DPSOL¿HU

If you need to split the antenna signal to connect two TVs, install a two-way splitter.

- 15 -

Base Stand Assembly Instruction

19"/22"/24"

1. Insert the stand support pillar into the stand as the arrow indicated
direction, and then fastened with one screw.

2. Insert the stand Ass'y into back cover as the arrow indicated direction,
and then fastened with one screw.

INSTALLATION NOTES

Locate the TV in a room where light does not strike the screen directly. Total darkness or a reflection on the screen
can cause eyestrain. Soft and indirect lighting is recommended for comfortable viewing.

Allow enough space between the TV and the wall to permit ventilation.

Please don’t rotate the TV!

Avoid excessively warm locations to prevent possible damage to the cabinet or premature component failure.

- 16 -

WALL MOUNTING INSTALLATION GUIDELINES

This television can be wall mounted as follows:

1.Place the LED LCD Television onto a solid surface. Please place some soft material
over the front of the screen to protect it from any damage.

2.Remove the screws from the lower part of the television, where the base joins to the
TV, and take away the stand (put the stand somewhere safe for future use).

19"/22"/24"

M4X5

M4X5

M4X5

M4X5

75mm

75mm

(19")

100mm

100mm

(22",24")

M4X5

M4X5

M4X5

M4X5

Introduction

02

- 17 -

Service Manual

Model No.:

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.

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 PC 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

- 18 -

Cable sample

Service Manual

Model No.:

HDMI Cable
(not supplied with the product)

HDMI to DVI Cable
( not supplied with the product)

Analog Audio Cable
(Stereo to RCA type)
(not supplied with the product)

-19 -

Service Manual

Model No.:

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:

Ŷ1HYHUFRQQHFWWKH$&OLQHFRUGSOXJWRRWKHUWKDQWKHVSHFL¿HGYROWDJH

Use the attached power cord only.

Ŷ,IWKHSRODUL]HG$&FRUGGRHVQRW¿WLQWRDQRQSRODUL]HG$&RXWOHW
GRQRWDWWHPSWWR¿OHRUFXWWKHEODGH,WLVWKHXVHUCVUHVSRQVLELOLW\WRKDYHDQ

electrician replace the obsolete outlet.

Ŷ ,I \RXFDXVH DVWDWLF GLVFKDUJHZKHQWRXFKLQJ WKHXQLW DQGWKH XQLWIDLOV WRIXQFWLRQ

simply unplug the unit from the AC outlet and plug it back in. The unit should return to
normal operation.

- 20 -

6. Operation Instructions

6-1 Front panel controls

Service Manual

Model No.:

1

Remote control sensor.
Indicator LED:

2

BLUE: POWER ON. RED: STAND BY.

Key board.

3

OPEN/CLOSE

PLAY/PAUSE

3

2

30 30

1

OPEN/CLOSE

1

PLAY/PAUSE

2
3
4
5

6

SOURCE
MENU

CH+/CH-

VOL+/VOL-

Display the input source menu.
Display main MENU.

In TV mode,press CH+ or CH- to change

the channel up and down.

In MENU, press CH+ or CH- to select items .

Adjust sound level.

SOURCE

MENU

CH+

CH-

VOL+

VOL-

STANDBY

1

2

3

4

5

6

7

In MENU,adjust the item that you Selected.

6.2 Back panel controls

4

SPDIF OUTPUT

3

input
input

digital audio output

input
input
input
input

1
2
3
4
5
6
7

USB

6

L/R AUDIO
VIDEO

S/PDIF

YPbPr
SCART

USB
HDMI2

1 2

7 8 9 10

7

5

COMMON INTERFACE (CI)

8
9
10
11
12
13

STANDBY

11 12 13

HDMI1 input

HEADPHONE
COMMON INTERFACE(CI)

PC AUDIO
VGA
RF

analogue audio output

input
input

input
input

- 21 -