Alesis CoolFire 15 Service Manual page 8

a. Set Comp/LIMIT/DIST/EQ/NR/CAB/FX1/FX2/FX3/DIGFX to "OF" mode.
b. Set LEVEL to "30".
c. Set EFFECT knob to "PLAY" position.
d. Set "VALUE" to "30"
e. Turn "MASTER VOLUME" all the way to the right(clockwise) (maximum)
f. connect signal to "INPUT" jack.( 470Kohm resistor in series)
g. Signal output from "HEADPHONES" jack loaded one 32 ohm/1W resistor for each channel.
1. Main board voltage required condition:
① 5V：5V±0.18V(AC input +10%)
② 3.3V：3.3V±0.15V(AC input +10%)
2. "EFFECT" testing
2.1 normal condition using testing: rotate the "EFFECT" knob all the way to the left, the indicator points to
"PLAY", then adjust "VALUE" knob, verify the Performing modes and the display status corresponding.(the
details of display please refer to panel function introduction.
2.2 "COMP/LIMIT" testing: rotate the "EFFECT" knob one click to the right(so the indicator points to
"COMP/LIMIT", when the display shows "OF", connect 1KHZ/-45Db sine wave to unit, earphone will
output 1KHZ/36mV±5 sine wave, regard that voltage level as 0 voltage, rotate "VALUE" knob, verify
voltage level in different modes are match below data.
C1:+0.82dBu
C2:+1.59dBu
C3:+2.29dBu
C4:+2.29dBu
C5:+3.53dBu
C6:+4.09dBu
C7:+4.58dBu
C8:+5.05dBu
C9:+5.45dBu
L1:+1.59dBu
L2:+2.92dBu
L3:+4.09dBu
L4:+5.09dBu
L5:+5.85dBu
L6:+6.44dBu
L7:+6.78dBu
L8:+7.08dBu
L9:+7.34dBu
2.3: TYPE Performing mode testing: connect musical signal to INPUT jack, insert earphone connector to
HEADPHONES jack. Set EFFECT to TYPE, rotate VALUE knob output should change accordingly.
2.4 HPF Performing mode testing: connect musical signal to INPUT jack, insert earphone connector to
HEADPHONES jack. Set EFFECT to HPF, rotate VALUE knob output should change accordingly.
2.5 LO Performing mode testing: connect musical signal to INPUT jack, insert earphone connector to
HEADPHONES jack. Set EFFECT to LO, rotate VALUE knob output should change accordingly.
2.6. LO MID Performing mode testing: connect musical signal to INPUT jack, insert earphone connector to