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Haier LE40B7500 User Manual

Haier LE40B7500
68 pages
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32&50 LCD TV LE32B7500-LE50B7500
1
Service
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Service
Table of Contents
Description Page Description Page
Table of Contents.......……...................................….....1
Important Safety Notice.......................................……..2
Revision List………………………………………………..3
1. General Specification....................................……….....4
2. Operating Instructions..………………….……...……..5
2.1 Remote Control…………….……...…………...……....5
2.2 OSD Menus…………....………………….….………....7
2.3 Panel Control And Rear Terminal Control………...19
3. Input/Output Specification………….....................….23
4. Mechanical Instructions……………………................26
5. Repair Flow Chart ……………………………………...31
6. PCB Layout …………...………………………………..38
6.1 Main Board …………...………………………………..38
6.2 Power Board……..…………………... …....….........40
6.3 IR Board………….……………..……….….......46
6.4 KeyBoard……..…………………...…….…........46
7. Adjustment..............................................................47
7.1 WB Adjustment..............................................47
7.2 Firmware and DDC Instruction..............................48
8. Block Diagram..…..…..............................................49
9. Wiring Diagram....…….............................................50
10. Schematic Diagram.………..…….………………....52
10.1 Main Board………..…….…………………...…......52
10.2 Power Board……..…..…....…………...……….....60
10.3 IR Board………….……………..……….…............67
10.4 Key Board……..…………………...…….…........68
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
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Haier LE40B7500 Specifications

General IconGeneral
Screen Size40 inches
Display TypeLCD
HDMI Ports3
Refresh Rate60 Hz
Aspect Ratio16:9
Response Time8 ms
Built-in SpeakersYes
VESA Mount Compatibility200 x 200 mm
Resolution1920 x 1080 pixels
Viewing Angle178°
Standby Power0.5 W

Summary

Safety Notice

General Specification

Operating Instructions

Input/Output Specification

Mechanical Instructions

Repair Flow Chart

No power

Troubleshooting steps for power-related problems.

Can't start

Diagnostic steps for TV startup failures.

Abnormal Display

Troubleshooting guide for screen image anomalies.

No display

Steps to resolve issues with a blank screen.

Sound problem

Troubleshooting audio issues like no sound or distortion.

Remote control malfunction

Steps to fix problems with the TV remote control.

Adjustment

WB Adjustment

Guide to adjusting white balance for optimal color.

Block Diagram

Wiring Diagram

Schematic Diagram

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