Dell P2210 Service Manual download pdf (Page 6)

Service Manual

Chapter 3- CIRCUIT THEORY

Block Diagram

There are 4pcs PCBA in this monitor, one is power& inverter& board which is a

single layer board, one is interface board including USB HUB 1up/4down, one is

keypad which is OSD control, and one is USB transfer board located on the right

side back cover. The system function block diagram as below

This is included switching power supplier, inverter for CCFL and interface

board.(fig.1)

Inverter

Transformer

DC JACK

For Audio

DC output

Feedback

and OVP

ON/OFF Control

Brightness Control

Power PWM

Control IC

LD7575

+12V

Snubber

&Schottky

Transformer

Snubber

&Schottky

AC Input

90V~264V

Power

MOSFET

DC output

Brightness Control

Photocoupler

Regulator&

Filter

Circuit

DCR Control

Inverter IC

INL837

+5V

Lamp2

+16V

Rectifier&

Filter

Circuit

Snubber

&Schottky

+16V

Feedback

Control

To Panel CCFL

DC output

Power

MOSFET

Lamp2

AC Line Filter

Fig.1

INVERTER POWER

1 2 3 4 5 6 7 ... 49

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Dell P2210 Service Manual Page 6

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