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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
Summary of Contents for HL22XLT2
Page 5: ...6 2 Operating Instructions 2 1 The Use of Remote Control ...
Page 6: ...7 ...
Page 7: ...8 2 2 To Use the Menus ...
Page 8: ...9 ...
Page 9: ...10 ...
Page 10: ...11 ...
Page 11: ...12 ...
Page 12: ...13 ...
Page 13: ...14 ...
Page 14: ...15 ...
Page 20: ...21 Step3 Remove the AC BKT KEY BOARD IR BOARD and SPEAKERS Step4 The PANEL ...
Page 28: ...29 6 PCB Layout 6 1 Main Board 715G3759M02000005K ...
Page 29: ...30 ...
Page 30: ...31 6 2 Power Board HL22XLT2 HL22XLTW2 715G3895P01L30002H ...
Page 31: ...32 ...
Page 32: ...33 ...
Page 33: ...34 HL22XLTW2 715G4147P01H21002S ...
Page 34: ...35 ...
Page 35: ...36 ...
Page 36: ...37 6 3 Key Board 715G4105K01000004L 6 4 IR Board 715G4104R01000004S ...