Does anybody know what is the internal audio connectors pin assignment on
A7M266. There are 6 pins next to CD and AUX on the mainboard. The diagram in
the manual shows only general labels MIC2 and HPHONE, but there is no pin
designation. I'm connecting iPanel Deluxe, and would like to have all audio
connectors on the panel, not on the back.
Thanks!
I searched in Google, but there is nothing about that 2x3 header.
Does the iPanel Deluxe have an AAPANEL connector ? The motherboard
header pattern for it looks like this (from a CUSL2 manual):
Line_out_R x x Line_In_R
AGND3 x x AGND2
Line_out_L x x Line_In_L
x AGND
MICPWR x x MIC2
The 2x3 header on the A7N266 could be something like -
Line_out_R, Line_out_L, GND, MIC-in, MIC-pwr, GND (MIC-in == MIC2)
but that is just a wild assed guess.
With a voltmeter, you'll be able to find MIC_pwr, because it will
read +5.0 on the volts scale when you touch it (with the system powered
up). With the power unplugged and your meter on ohms, you might be
able to figure out which pin is ground.
To find the MIC-in pin, power up your system and enable the microphone
input. Then, with your finger, touch each of the six pins until you
hear a "hum" in the audio.
That leaves figuring out which of the pins is Line_out. With your
meter on "AC volts", place a pure tone (say a 1KHz sine wave) on the
audio. Turn the volume all the way up. When your meter touches the
line out pins, they should measure 1 Volt RMS at full volume. By
placing the tone alternately on the left-only or the right-only
channel, you should be able to figure out which channel is which.
That is a lot of work, when you could just plug your stuff into
the back of the computer. You'll also need to make some kind of
adapter to get from the 2x5 AAPANEL to the 2x3 audio header.
HTH,
Paul
