External Audio Input - Alesis Micron Service Manual

Audio Output Test
1) While listening to the headphones, press a key and turn the Master Volume
knob clockwise until the sound is at a comfortable listening level (this verifies
that the Master Volume pot is functional). Verify that both the left and right
sides of the headphones produce a sound.
2) Plug the headphones into the Q02 audio output left jack. Verify that when a
key a pressed, a sound is heard on one side (left side) of the headphones.
NOTE: the Master Volume knob may require adjustment in order to hear this
sound more easily.
3) Repeat step 2) for the Q02 audio output right jack. The sound should again
be heard on the left side of the headphones.
Audio Output Test
1) Plug the headphones into the Q02 headphone output jack (Master Volume
knob may require readjustment to bring headphone output to a comfortable
listening level).
2) Press and hold down a key (do not release). A single sound should be heard
from the headphones.
3) Press and hold a second key (do not release the first key) and verify that a
second sound is heard together with the first one.
4) Press and hold a third key (do not release the first and second key) and verify
that a third sound is heard together with the first and second ones.
5) Repeat step 4) five more times, so that a total of eight notes are playing
simultaneously, each time verifying that the new note is heard along with the
existing notes that are already playing.

External Audio Input

1) Hold down the [phrase] and [latch] buttons together. Verify that the second
line of the LCD says "Audio in -> out". Release the buttons.
2) Connect the AP generator output to the Q02 audio input left.
3) Set the AP generator output to produce a 2Vp, 1KHz sinewave and turn on
the output.
4) Verify that there is a sound from the left side of the headphones
5) Connect the AP generator output to the Q02 audio input right and verify that
there is a sound from the right side of the headphones.