Philips BDL4681XU/00, Service Manual

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BDL4681XU LCD 93
General Product Specification
Light sensor detects the change of illumination outside, and then it sends the signal to MCU via
Iˆ2C interface. MCU will ask inverter to switch the brightness if the outside illumination was
change over the default.MCU will transmit PWM signal to the inverter, and the inverter will
change the brightness of panel.
Each step has its own illuminate range according different environment illumination. This
technology makes the use of visual application more friendly and intelligently.
4.9 Smart Power
This function allows you to choose a certain level of power saving condition:
“OFF”: to set the system in normal power condition
“MEDIUM”: to set the system in medium level power saving status.
“HIGH”: to set the system in high level power saving status
Smart Power Setting Display Brightness
High 65%
Medium 80%
Off 90%
Smart Power requirements:
Smart
Power
Level
RS232 DATA[1] OSD
Off 0x00 OFF
Medium 0x02 Medium
High 0x03 High
Off: to be defined by supplier for optimal picture quality at Brightness level =70 and Contrast
level = 50
Medium: reduce backlight current around 80% compare to current settings
High: reduce backlight current around 65% compare to current settings