Acer TravelMate 240 Service Manual page 37

LCD
Item
Electrical Specification
Supply voltage for LCD display (V)
Supply voltage for LCD backlight (Vrms)
AC Adapter
Item
Vendor & model name
Input Requirements
Maximum input current (A,
@90Vac, full load)
Nominal frequency (Hz)
Frequency variation range (Hz)
Input voltage range (Vrms)
Inrush current
Efficiency
Output Ratings (CV mode)
DC output voltage
Noise + Ripple
Load
Output Ratings (CC mode)
DC output voltage
Constant current mode
Dynamic Output Characteristics
Turn-on delay time
Hold up time
Over Voltage Protection (OVP)
Short circuit protection
Electrostatic discharge (ESD)
Dielectric Withstand Voltage
Primary to secondary
Leakage current
Regulatory Requirements
28
3.3 (typ.)
650 (typ.)
Liton
1.5 A @ 110Vac
1.0 A @ 240Vac
50-60
47-63
90-270
The maximum inrush current will be less than 50A and 100A when the adapter
is connected to 115Vac and 230Vac respectively.
It should provide an efficiency of 80% minimum, when measured at maximum
load under 115Vac.
19V
300mVp-pmax (20 MHz bandwidth)
0(min) 3.16A(max)
19V +/-1.0V for CV mode
3.6 +/- 0.3A
3 sec (@ 115Vac)
5ms (@115Vac, Full load)
24V
3.9A max can be protected and output can be shorted without damage
15KV (at air discharge)
8KV (at contact discharge)
3000Vac
0.25 mA max. (@ 254Vac, 60Hz)
Safety Requirements:
1.The subject product rated 100-120V 60Hz must be listed under UL 1950 and
certified with SCA Standard C22.2 No.950.
2.The subject product rated 200-240V 50Hz must comply with low voltage
directive 73/23EEC.
EMI Requirements:
1.The subject product rated 100-120V 60Hz must meet the EMI requirements
of FCC part 15, Subpart B for Class B Digital Device and get FCC Certification
before marketing into USA and Canada.
2.The subject product rated 200-240V 50Hz must meet the EMC Directive 89/
336/EEC.
3.The subject product rated 100-120V must meet the VCCI-2 EMI
requirements.
Specification
3.3 (typ.)
650 (typ.)
Specification
TravelMate 240/ 250