Acer AL722 AL722 Monitor Service Guide - Page 9

3. VK-715 Control Panel and Audio Board E. Description The VK-715 is designed to offer a user interfaced control panel which passes and receives signals to and from VL-710 display control board. Also there is a stereo audio amplifier to drive a pair of speakers. When in power saving mode the audio circuit can be turned off by the control signal from VL-710 board. F. Electrical characteristics (Tamb=25°) Audio amplifier(USE Panasonic VP-7723A Audio Analyzor. Item Audio Input Freq. Input Voltage(V) Input Current(m A) Audio Voltage Gain 50m Vrms 1KHz Frequency Response 100m Vrms 50Hz-20KHz Signal to Noise ratio 500m Vrms 1KHz Cross talk 100m Vrms 1KHz Distortion 500m Vrms 1KHz Output Watt. 500m Vrms 1KHz Volume Control Speakers⇒model:4Ø28CP 2X2w speaker; Impedance 8 Ω at 1KHz Spec. Comment Min. Typ. Max. 8.4 9 9.6 - 500 800 - - 14d B Volume Max.,load 8 Ω -3dB - +3d B Volume Max.,load 8 Ω - - -70d B Volume Max.,load 8 Ω - - -60d B Volume Max.,load 8 Ω - - 1% Volume Max.,load 8 Ω - - 0.5W Volume Max.,load 8 Ω - - - Analog G. Connector and Switch Locations H. Connector and Switch Locations Location J1 J2 J3 J4 J5 Type 96113-0813 SCJ-0348-C 87502-0200 87502-0200 96113-1013 Maker E&T SC ACES ACES E&T Number of pins 8 9 2 2 10 9