Acer AL2017 Service-Handbuch - Seite 6

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Auch für Acer AL2017: Benutzerhandbuch (11 seiten), Spezifikationen (2 seiten), Service-Handbuch (37 seiten), Schnellstart-Handbuch (2 seiten)

Acer

1. Monitor Block Diagram

The LCD Monitor contains an interface board, and inverter/power/Audio board, keypad board and flat

panel. In Inverter/power/Audio board, power section supplies +14V & +5V for Inverter/Audio and

Interface board used. The inverter section drives the backlight of panel and the DC-DC conversion.

DVI

(Option)

1.1 Switching Mode Power Supply

1.1.1 AC Current Input Circuit

P801 is a connector for connecting AC Power. F801 is a fuse to protect all the circuit. AC

input voltage is from 90v to 264V. R801 and R802 joined between two inputting main circuit to

prevent man from shock. L801 is used to clear up low frequency wave. C801 and C802 are used to

discharge the waves that L801 produced. High frequency waves are damped by C801 and C802.

D801 is a rectifier which composed of 4 build-in diodes, it inverts AC to DC.

1.1.2 High Voltage to Low Voltage Control Circuit

C804 is used to smooth the wave from rectifier. IC802 is a highly integrated PWM controller.

When rectified DC high voltage is applied to the HV pin during start-up, the MOSFET Q804 is

Chapter 3- CIRCUIT THEORY

DVI

DDC

Red

Green

Blue

Vsync

Hsync

SCL

SDA

VGA

DDC

Flash

A/D&

Scaler&MCU

OSD

(EEprom)

Key-pad

Service Manual

To LCD

module