Haier HL22XLT2, Service Manual

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21.5 ″ LCD TV Haier HL22XLT2&HL22XLTW2
1
Service
Service
Service
Horizontal Frequency
31~68 KHz
TABLE OF CONTENTS
Description Page Description Page
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
6.1 Main Board………..…………………...…….….......29
6.2 Power Board…..…………..………….…..…….......31
6.3 Key Board………………………..……..……….......37
6.4 IR Board…………………………..……….…….......37
7. Adjustment..............................................................38
8. Block Diagram.…….................................................39
9. Wiring Diagram.……...............................................40
10. Schematic Diagram………..……..………………...41
10.1 Main Board…………….…………………...….......41
10.2 Power Board………..…....…………...……….......51
10.3 Key Board……………….………….………….......55
10.4 IR Board……………………………….……….......56
Table of Contents.......……....................................…........1
Important Safety Notice.......................................……......2
Revision List…………………………………………………3
1. General Specification.................................………........4
2. Operating Instructions…………………….……...….......6
2.1 The Use of Remote Control…….…………...…….......6
2.2 To Use the Menus…...………………….….………......8
2.3 Front Panel Control Knobs……………….………......16
2.4 How to Connect…….…………………….…..…….....17
3. Input/Output Specification…………....................…....18
4. Mechanical Instructions…………………….................20
5. Repair Flow Chart ………………………………………22
6. PCB Layout …………...………………………………...29