Haier 40D2500 Service Manual

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Contents

Table of Contents2

Chapter 1. General Information4

Chapter 2. Speciﬁcation9

Chapter 3. Disassemble and Assemble12

Chapter 4. Location of Controls and Components14

Chapter 5. Installation Instructions19

Chapter 6. Operation Instructions21

Chapter 7. Electrical Parts24

Chapter 8. Measurements and Adjustments32

Chapter 9. Trouble Shooting36

Haier 40D2500 Service Manual Manual pdf 3 page image

Service ManualModel No.:4-3-2. Connector definition ..............................................................................154-4. LCD Panel ..................................................................................16Chapter 5. Installation Instructions5-1. Accessories ..............................................................................185-2. External Equipment Connections............................................19Chapter 6. Operation Instructions6-1. Front Panel Controls.................................................................206-2. Back Panel Controls .................................................................216-3. Setting Up Your Remote Control .............................................22Chapter 7. Electrical Parts7-1. Block Diagram............................................................................237-2. Circuit Diagram..........................................................................30Chapter 8. Measurements and Adjustments8-1. Service Mode ............................................................................318-1-1.How to enter into Service Mode............................................................ 318-1-2.How to exit ............................................................................................318-2. Measurements and Adjustments ............................................318-2-1. The Main Menu ....................................................................................318-2-2. General Setting ....................................................................................328-2-3. Picture ..................................................................................................328-2-4. Sound................................................................................................... 338-2-5. Debug...................................................................................................338-3. Software Update ......................................................................348-3-1. software update ....................................................................34Chapter 9. Trouble shooting9-1. Simple check ...........................................................................359-2. Mainboard IC Introduction......................................................389-3. Mainboard Failure Check........................................................399-4. Pannel Failure..........................................................................452TP.MS3393.PB71340D2500

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Questions and answers

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Frequently asked questions

To turn on the TV, press the POWER button on the front panel.

To change the input source, press the INPUT button on the front panel.

To change the volume on your Haier 40D2500 TV using the remote control, press the VOL+/VOL- buttons.

If the remote control is not working, ensure that you are aiming it towards the remote sensor on the TV. This will help the TV receive the signals from the remote control.

The 'KEY' component is likely related to the control or input functions of the device, possibly for remote control or manual input.

First, verify if the television is properly plugged in and receiving power. Check if the electricity supply is available. If everything is connected correctly and the issue persists, try restarting the television by disconnecting it from the power supply for 10 seconds and then reconnecting it.

To troubleshoot a blank screen, verify if the correct signals are being input. Press the SOURCE button to change the signal input to TV input. If the issue persists, restart the television by disconnecting it from the power supply for 10 seconds and then reconnecting it.

First, verify if the speakers are broken. If the speakers are not broken, check if the main board has the right input according to the source you are connecting (TV/COMPONENT/AV/VGA/HDMI etc.). Then, check the corresponding audio input circuit. If the issue persists, verify if UA1 has the right output and power. If UA1 is functioning correctly, check CN17 input. If all else fails, you may need to change the mainboard.

If the speakers are not broken, check if the main board has the right input according to the source you are connecting (TV/COMPONENT/AV/VGA/HDMI etc.). Then, check the corresponding audio input circuit. If the issue persists, verify if UA1 has the right output and power. If UA1 is functioning correctly, check CN17 input. If all else fails, you may need to change the mainboard.

If your TV is showing some channels in black and white, first verify if the same problem exists in other channels. If the issue persists, check the picture and sound system of the affected channel. If the problem is with the sound system, change the channel to the correct sound system (PAL-BG SECAM/L) and refer to the relative instructions in the manual for color adjustment. If the issue still persists, update the software and reboot the TV, or consider changing the mainboard.

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