Acer AL2002 AL2002 Service Guide - Page 12

11 Go to cover page Table 2. AC TO DC Converter Requirements Input Voltage Range The operating range shall be from 90 to 132 and 195 to 240 VAC sinusoidal for all models specified. Input Frequency Range Input power frequency range shall be from 47.5 to 63Hz over the specified input voltage range. Power Consumption Power consumption for the monitor shall be less than 49W over the specified voltage and frequency ranges. In power off mode the power consumption will be less than 1W (at 90VAC~240VAC). Line Fuse The AC input shall be fused and become electrically open as a result on an unsafe current level. The fuse may not be user replaceable. Initial Cold Start The power supply shall start and function properly when under full load, with worst case conditions of input voltage, input frequency, operating temperature, and cold backlight lamps. Inrush Current The inrush current must be limited to 42A when operated at 120VAC, and 80A when operated at 220VAC. In - rush current is measured at an ambient temperature of 25° C, with the unit temperature stabilized in the power - off Hot Start Cycle The power supply shall not be damaged when switched ON for one second and OFF for one second for seven consecutive times after operating for one hour at full load, 25°C, and nominal input line voltage. Under Voltage The power supply shall contain protection circuitry such that the application of an input voltage below the minimum specified in this table shall not cause damage to the power supply unit nor cause failure of the input Line Transient The power supply shall operate within IEC 801-4 (±1KV) and IEC 801 -5 (±2KV) for the domestic U.S. Version. The UPS power supply shall operate and comply with CE mark. 3.11. Display Communications Channel The monitor assembly shall provide a display communications channel that conforms to VESA DDC2B hardware requirements. This configuration shall contain the 256-byte EDID file as specified by VESA E-EDID Standard. The monitor contains a separate EEProm for each video input to store EDID information. Once the EDID is programmed there is a write protection that is enabled so that the EEPROM cannot be overwritten.