Hitachi 22LD4550U Service Manual

22"LCD TV
Service
Service
Service
Description

Table Of Contents......................................................1

Important Safety Notice...................................................2
Revision List.........................................................3
1. General Specification...............................................4
2. Operating Instructions.........................................5
2.1. The Use Of Remote Control.................................5
2.2. To Use The Menu...............................................6
2.3. External equipment setup.....................................47
2.4. Front Panel Control Knobs.................................58
3. Input/Output Specification.......................................59
4. Mechanical Instructions.........................................61
5. Repair Flow Chart ..............................................64
6. PCB Layout ....................................................69
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
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
TABLE OF CONTENTS
SAFETY NOTICE
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
Page Description
6.1.Main Board................................................69
6.2.Power Board..............................................72
6.3.Key Board.............................................73
6.4.IR Board................................................73
7. White-Balance, Luminance Adjustment...................74
8. Block Diagram..................................................76
9. Schematic.....................................................77
9.1 Main Board....................................................77
9.2.Power Board..................................................96
9.3.Key Board................................................98
10. Exploded View..............................................99
11. BOM List....................................................100
1
Hitachi 22LD4550U
Horizontal Frequency
43~58 kHz
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