Acer AL718, Service Manual

Page: 13 / 44

2. Power Module
followings:
2.1 Power characteristics.
2.2 Inverter output characteristics.
2.3 Audio output characteristics.
2.4 Power module of connector definition ;
CN1 ; Pin 1 & 2 ----> Vdc Output ( 5V +/- 5%)
Pin 3 ---------> Vdc Output ( 3.3V +/- 5%)
Pin 4 ---------> GND
Pin 5 ---------> Vdc Output ( 2.5V +/- 5%)
Pin 6 ---------> GND
Pin 7 ---------> On /Off ( "High" set Lamp on )
Pin 8 ---------> NA
Pin 9 ---------> Brightness Voltage
Pin 10 --------> Audio Volume
Input Rated Input Voltage 90~240 Vac , 50/60 Hz
Operation Input Voltage Range 90~260 Vac, 47~63 Hz
Max Input AC Current < 1.5A
Efficiency
5Vdc load 1A
3.3Vdc load 1A
2.5Vdc load 0.3A
Brightness Voltage from 0.3 ~ 3.3Vdc
ON / OFF Voltage : High(3.3Vdc)/ Low(0Vdc)
Brightness Voltage (Vadj)
0.3(Max.) ~ 3.3Vdc (min)
On / Off Voltage
High (3.3Vdc) / Low(0Vdc)
Audio Mute Voltage
0Vdc ( Mute enable ) / 3.3Vdc ( Mute Disable )
Audio Voltage Voltage
0.4Vdc (Min.) ~ 3.3Vdc(Max)
Output Static Output Characteristics
5V /1A Output : 4.75Vdc ~ 5.1Vdc
3.3V/1A Output : 3.135Vdc ~ 3.465Vdc
2.5V/0.3A Output : 2.375Vdc ~ 2.625Vdc
Rated Output kick-off Voltage 1150 ~ 2000Vrms
Rated Output Voltage Voltage 725Vrms
Rated Output Frequency 50 ~ 60Khz
Rated Output Current per tube 8mArms
Audio amplifier ST TDA7496
Maximum Audio Output Power 1W 2 @<3% Distortion , Speaker 1W2
Line Input Impedance 10K ohm
AL718
4-3