Acer AL2017 Service Manual - Page 6
Browse online or download pdf Service Manual for Monitor Acer AL2017. Acer AL2017 40 pages. Lcd display
Also for Acer AL2017: User Manual (11 pages), Specifications (2 pages), Service Manual (37 pages), Quick Start Manual (2 pages)
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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.
2. Interface BOARD DIAGRAM
DVI
(Option)
3. Electronic Circuit Theory
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
5
Service Manual
To LCD
module