Acer AL511 AL511 Service Guide - Page 15

7. POWER BOARD A. Description There are three kind of circuits in this power board-AC/AC, inverter and audio B. Electrical characteristics B-1 FOR HANNSTAR PANEL INPUT VOLTAGE MIN. 11.4V INPUT CURRENT -------- BACKLIGHT VOLTAGE LAMP CURRENT DRIVING FREQUENCY EFFICIENCY Operating Life Time 684Vrms 3mA rms. 40KHz -------40,000 TYP. 12V 1A 760V rms. 6mA rms. 55KHz 75% ------- MAX. 13.8V 1.2A -------7mArms 80KHz COMMENT Vin=12V MAX. BRIGHTNESS Vin = 12V Hours (note) Note: Life time(Hr) can be defined as the time in which it continues to operate under the condition: Ta=25±3°C, IL=6.0mA B-2 For AU panel INPUT VOLTAGE INPUT CURRENT BACKLIGHT VOLTAGE MIN. 11.4V -------- TYP. 12V 1A 630V rms. MAX. 13.8V 1.2A 690Vrms COMMENT Vin=12V MAX. BRIGHTNESS LAMP CURRENT 3mA rms. 6.5mA rms. 8mArms DRIVING FREQUENCY 40KHz 55KHz 60KHz EFFICIENCY Operating Life Time -------30,000 75% ------- Vin = 12V Hours (note) Note: Life time(Hr) can be defined as the time in which it continues to operate under the condition: Ta=25±3°C, IL=8.0mA 15