Norcent LT2725 Service Manual

27'' LCD TV Color Monitor
Service
Service
Service
Description
Table Of Contents..........................................................1
Revision List............................................................2
Important Safety Notice.....................................3
1. Monitor Specification..................................................4
2. Operating Instructions............................................5
2.1 The Use Of Remote Control................................5
2.2 Front Panel Control Knobs...................................6
2.3 OSD Operating....................................................7
2.4 How To Connect...................................................12
3. Input/Output Specification.......................................15
3.1 Input Signal Connector.........................................15
3.2 Factory Preset Display Modes................................16
4. Mechanical Instructions...........................................17
5. Repair Flow Chart.................................................22
6. White Balance, Luminance Adjustment....................25
7. PCB Layout........................................................27
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

TABLE OF CONTENTS

Page Description
7.1 Main Board.......................................................27
7.2 Power Board......................................................29
7.3 Audio Board..........................................................31
7.4 Key Board..............................................................32
8. Block Diagram..........................................................33
8.1 Main Board.............................................................33
8.2 Power Board..........................................................34
9. Schematic Diagram.............................................35
9.1 Main Board........................................................35
9.2 Power Board...................................................53
9.3 Audio Board....................................................54
9.4 Key Board............................................................55
9.5 IR Board..............................................................56
9.6 Side Board.....................................................57
10. Exploded View.........................................................58
11. BOM List..........................................................59
SAFETY NOTICE
1
Norcent LT2725
Horizontal Frequency
31- 60 KHz
Page