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Page 3

3. Interface Operation

3.1 Top (Circuit diagrams sheet 2 of 8)

This page is function block. (1) Power. (2) VGA & DDC interface. (3) DVI & DDC interface. (4)

Scaler Gm5726H (Gm5766H). (5) Key & panel interface. (6) Audio.

3.2 Power (Circuit diagrams sheet 3 of 8)

3.2.1 P301 connector

A 5V power supply for LCD module, also it is main power of interface board. A VDD (+5V)

power supply for audio AMP. It is generated from the P301 connector. And adjust back

light of LCD module from I306 sclaer Gm5726H (Gm5766H) control.

3.2.2 I302 : 3-terminal regulator

A 3.3V power supply for I306 scaler IC Gm5726H (Gm5766H) and I308 EEPROM / I309

SPI flash ROM, it is generated from the 5V source.

3.2.3 I303 : 3-terminal regulator

A 1.8V power supply for I306 scaler IC Gm5726H (Gm5766H), it is generated from the

3.3V source (I302).

3.2.4 Q302, I301 : ON/OFF control for LCD module power

ON/OFF control (PANELVCC_EN) is performed for power ON/OFF and also for the power

saving sequence. It is support 5V to LCD module power. The PANELVCC_EN signal is

generated from I306 scaler IC Gm5726H (Gm5766H).

3.2.5 R305 : ON/OFF control for LCD module back light power

ON/OFF control (BKLT_EN) is performed for black light power ON/OFF and also for the

power saving sequence. The BKLT_EN signal is generated from I306 scaler IC

Gm5726H (Gm5766H).

022-83718162

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022-83715667

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General

Pixel pitch	0.285 x 0.285 mm
Display diagonal	19 \
Display resolution	1440 x 900 pixels
Viewable size diagonal	483 mm
Contrast ratio (typical)	1000:1
Digital vertical frequency	55 - 75 Hz
Digital horizontal frequency	30 - 83 kHz
Power requirements	100-240VAC
HDCP	Yes
Certification	FCC Class B
Product color	Silver
Country of origin	China
Market positioning	-
Panel mounting interface	100 x 100 mm
Power consumption (standby)	2 W
Power consumption (typical)	49 W
Storage temperature (T-T)	-20 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	15 - 90 %
Sustainability certificates	ENERGY STAR