Dell E2009W 서비스 매뉴얼 - 페이지 6
{카테고리_이름} Dell E2009W에 대한 서비스 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Dell E2009W 49 페이지. Lcd monitor
Dell E2009W에 대해서도 마찬가지입니다: 설정 매뉴얼 (2 페이지), 사용자 설명서 (30 페이지)
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Block Diagram
There are 4pcs PCBA in this monitor, one is power& inverter board which is a single layer board, one is
interface board , one is keypad which is OSD control. The system function block diagram as below
This PWA is included switching power supplier, inverter for CCFL and interface board.(fig.1)
INVERTER
1
2
3
4
Chapter 3- CIRCUIT THEORY
MOSFET
INL833
MOSFET
Feedback
Control
POWER
+24V DC output
Snubber
&Schottky
Power
Transformer
Rectifier&
Power
Filter
MOSFET
Circuit
AC Line Filter
AC Input
90V~264V
Fig.1
5
Service Manual
Brightness Control
ON/OFF Control
+5V DC output
Snubber
&Schottky
Feedback
and OVP
Photocoupler
PWM Control IC
LD7552B