Haier 40D2500, 40D3505T Schematic

40″ LCD TV Haier 40D3505T-40D2500

Service

Table of Contents

Description Page Description Page

Table of Contents.......……...................................….....1

6.2 Power Board……..…………………... …....….........37

Important Safety Notice.......................................……..2

Revision List………………………………………………..3

1. General Specification....................................……….....4

2. Operating Instructions..………………….……...……..8

2.1 Remote Control…………….……...…………...……....8

2.2 OSD Menus…………....………………….….………..10

2.3 Panel Control And Rear Terminal Control………...12

3. Input/Output Specification………….....................….23

4. Mechanical Instructions……………………................25

5. Repair Flow Chart ……………………………………...28

6. PCB Layout …………...………………………………..35

6.1 Main Board …………...………………………………..35

6.3 IR Board………….……………..……….….......40

6.4 KeyBoard……..…………………...…….…........40

7. Adjustment..............................................................41

7.1 ADC/WB Adjustment..............................................41

7.2 Firmware and DDC Instruction..............................42

8. Block Diagram..…..…..............................................46

9. Wiring Diagram....…….............................................48

10. Schematic Diagram.………..…….………………....49

10.1 Main Board………..…….…………………...…......49

10.2 Power Board……..…..…....…………...……….....56

10.3 IR Board………….……………..……….…............58

10.4 Key Board……..…………………...…….…........59

SAFETY NOTICE

ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS

AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING

ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.

CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

1

40″ LCD TV Haier 40D3505T-40D2500

Important Safety Notice

Proper service and repair is important to the safe, reliable operation of all Haier Company Equipment. The service

procedures recommended by Haier and described in this service manual are effective methods of performing

service operations. Some of these service operations require the use of tools specially designed for the purpose.

The special tools should be used when and as recommended.

It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in

order to minimize the risk of personal injury to service personnel. The possibility exists that improper service

methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE

NOT EXHAUSTIVE. Haier could not possibly know, evaluate and advise the service trade of all conceivable ways in

which service might be done or of the possible hazardous consequences of each way. Consequently, Haier has not

undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not

recommended by Haier must first satisfy himself thoroughly that neither his safety nor the safe operation of the

equipment will be jeopardized by the service method selected.

Hereafter throughout this manual, Haier Company will be referred to as Haier.

WARNING

Use of substitute replacement parts, which do not have the same, specified safety characteristics might create

shock, fire, or other hazards.

Under no circumstances should the original design be modified or altered without written permission from Haier.

Haier assumes no liability, express or implied, arising out of any unauthorized modification of design.

Servicer assumes all liability.

FOR PRODUCTS CONTAINING LASER:

DANGER-Invisible laser radiations when open AVOID DIRECT EXPOSURE TO BEAM.

CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may

result in hazardous radiation exposure.

CAUTION -The use of optical instruments with this product will increase eye hazard.

TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S

REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF

THIS SERVICE MANUAL.

Take care during handling the LCD module with backlight unit

-Must mount the module using mounting holes arranged in four corners.

-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.

-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to

the panel.

-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).

-Make certain that treatment person’s body is grounded through wristband.

-Do not leave the module in high temperature and in areas of high humidity for a long time.

-Avoid contact with water as it may a short circuit within the module.

-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may damage the panel.)

2

40″ LCD TV Haier 40D3505T-40D2500

Revision List

Version Release Date Revision Instructions Customer Model Model

A00 Jul.08,2014 Initial release 40D3505T E40E21NKDE8H9NX

A01 Otc.14,2014 Initial release 40D2500 E40E21NKDE3HNNX

3

40″ LCD TV Haier 40D3505T-40D2500

1. General Specification

4

40″ LCD TV Haier 40D3505T-40D2500

5

40″ LCD TV Haier 40D3505T-40D2500

6

40″ LCD TV Haier 40D3505T-40D2500

7

40″ LCD TV Haier 40D3505T-40D2500

2. Operating Instructions

2.1 Remote Control

8

40″ LCD TV Haier 40D3505T-40D2500

9

40″ LCD TV Haier 40D3505T-40D2500

2.2 OSD Menus

10

40″ LCD TV Haier 40D3505T-40D2500

11

40″ LCD TV Haier 40D3505T-40D2500

12

40″ LCD TV Haier 40D3505T-40D2500

13

40″ LCD TV Haier 40D3505T-40D2500

14

40″ LCD TV Haier 40D3505T-40D2500

15

40″ LCD TV Haier 40D3505T-40D2500

16

40″ LCD TV Haier 40D3505T-40D2500

17

40″ LCD TV Haier 40D3505T-40D2500

18