Acer AT3720A AT3720A Service Guide - Page 41

Mains 1. Power supply electrical specification 2. Stand-by consumption 3. Power consumption 4. Mains disturbance behaviour 5. Inverter The power supply for this product is an internal converter, with a non-replaceable fuse internally. This converter is designed to meet CE mark requirement. • Input voltage and frequency range: The operating range of line voltage is AC 90 volts to 264 volts, 47Hz to 63 Hz. • Input current: 2.2A • Line fuse: The AC input is fused and becomes electrically open as a result of an unsafe current condition. This fuse is inside the power supply converter and is not use replaceable, and must be returned for replacement. This fuse is well selected to handle inrush current for all combinations of line voltage and frequency. 5 watts (max) 185 Watts No disjunction during 0 to 40ms mains interrupt, with max load, min mains voltage. No software reboot during the test. No over voltage causing any damage during mains interrupt (0 to any time). The inverter which is used to light up backlight of LCD panel is well designed to meet requirement of panel specification. Audio / Acoustical 1. Audio input 2. PC Stereo Input 3. Built-in Speaker 4. acoustical noise (complete TV) Level: 500 mVrms Type: Stereo R/L Channels Impedance: More than 22 K ohm Interface: RCA Jack, R: Red color, L: White color Level: 500 mVrms Type: Stereo R/L Channels Impedance: More than 22 K ohm Interface: 3.5mm stereo jack Max. audio output (at 10% THD max.) at 500 Vrms / 1KHz input: 8W + 8W Sound Distortion at 250 mW / KHz: 1% THD max. Speaker: 20W (10W + 10W) Speaker impedance: 4 ohm at 1KHz Residual Hum at Min. Volume: 500 uW Max. Max Hum at Max. Volume: 1000 uW Max. Audible noise in standby mode