Lenovo L2021 WA, Руководство по обслуживанию

Страница: 3 / 64

Lenovo Service Manual L2021W
3
CONTENTS
1. LCD Specifications .................................................................................................... 4
1.1 Product Features ............................................................................................................................ 4
1.2 Factory preset modes ..................................................................................................................... 5
2.Operation instruction ................................................................................................. 6
2.1 Control Buttons .............................................................................................................................. 6
2.2 OSD User mode adjustment .......................................................................................................... 7
3.Interface description ................................................................................................. 11
3.1 VGA Interface description .......................................................................................................... 11
3.2 DVI Interface description ............................................................................................................ 11
4. Panel Feature ........................................................................................................... 12
4.1 General Specifications ................................................................................................................. 12
4.2 Absolute Maximum Ratings ........................................................................................................ 12
4.3 Electrical Characteristics ............................................................................................................ 13
4.4 Panel Block Diagroam ................................................................................................................. 14
4.5 LVDS Connector pin Assignment ............................................................................................... 14
5.Block Diagram .......................................................................................................... 15
5.1 LCD Block Diagram ................................................................................................................... 15
5.2 MainBoard Block Diagram ......................................................................................................... 15
5.3 Power/ Inverter Board Block Diagram ...................................................................................... 16
5.4 Software Flow Chart .................................................................................................................... 17
6.
Circuit Schematic
.................................................................................................. 18
6.1 Main Board---715G3327-1 .......................................................................................................... 18
6.2 Power Board715G4174-2 ............................................................................................................. 23
6.3 Inverter part ................................................................................................................................. 24
6.4 Key Board715G3248/715G3249 .................................................................................................. 25
7.Explore Views ............................................................................................................ 26
8. PCB Layout .............................................................................................................. 27
8.1 MainBoard- 715G3327-1 ............................................................................................................ 27
8.2 PowerBoard 715G4174 ................................................................................................................ 29
8.3 KeyBoard ...................................................................................................................................... 31
9.
Maintenance
........................................................................................................... 32
9.1 Maintainability Requirement ..................................................................................................... 32
9.2 Disassembly SOP .......................................................................................................................... 32
9.3 Trouble Shooting .......................................................................................................................... 37
9.4 software update step .................................................................................................................... 42
9.5 Writing DDC program step ......................................................................................................... 48
9.6 Factory mode adjustment ............................................................................................................ 51
10.BOM List ................................................................................................................. 53
10.1 Model
：
TAASRJEYXAG1HNJ ............................................................................................... 53