Acer AT3720A Service Manual page 41

Mains
Power supply electrical
1.
specification
Stand-by consumption
2.
Power consumption
3.
Mains disturbance behaviour
4.
Inverter
5.
Audio / Acoustical
Audio input
1.
PC Stereo Input
2.
Built-in Speaker
3.
acoustical noise (complete
4.
TV)
Chapter 1
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.
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 <35dBA (ISO-7779)
Audible noise in power ON mode <35dBA (ISO-7779)
Parasitic noise due to mechanical vibration during audio sweep
must be inaudible at 1m around the TV.
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