Norcent LT2722
2
Table Of Contents
Revision List .............…………...............……..............................................…………........................... 1
Table Of Contents .............................................................................................………….......................... 2
1. General Specifications ................................................................................………….......................... 3
2. Operating Instructions ..................................................................................……………..………….. 4
2.1 The Use Of Remote Control ..........................................................................................…………… 4
2.2 Front Panel Control Knobs ..........................................................................................…………… 5
2.3 OSD Operating ............................................................................................................…………… 5
2.4 Safety Notice ............ ...................................................................................................…………...…. 10
3. Input Specification ..........................................................................................……………………… 13
3.1 Input Signal connector ............................................................................................................... 13
3.2 Factory Preset Display Modes............................................................................................................ 14
4. Mechanical Instructions ........……………………………………………………………………………. 15
5. Repair Flow Chart ...................................................................................................................... 21
6. White Balance, Luminance Adjustment …………………………………………………………………. 26
7. BOM List ........................................................…………………………………………......................... 28
8. PCB Layout ........................………………………………………...........................………………...…. 51
8.1 Main Board ......................……....................................................…………………………………. 51
8.2 Power Board ...................……....................................................…………………………………. 55
8.3 Key/IR Board ...................…………..........................................………………………………….. 57
8.4 Earphone Board ..........................…………........................................……………………………….. 58
9. Block Diagram .........................................................................................…………………………...... 59
9.1 Main Board ...........................………........……………………………………………………………..... 59
9.2 Power Board ...................................………………………………………………………...………..... 60
9.3 Exploded View ...........................………………………………………………………………………. 61
10. Schematic Diagram .............…………....................................................…………………………… 62
10.1 Main Board ......................……....................................................………………………………… 62
10.2 Power Board ...................……....................................................………………………………… 74
10.3 Key/ IR Board ..........................…………........................................……………………………….. 76
