Alesis DEQ224 Service Manual page 26

Front Panel Sub Assembly Test CON'T
12) Press the STORE button.
Verify that the Channel A signal AND Channel B signal LEDs turn
on, and that when the button is held, that the LEDs that are on
do not flicker.
Problems with no response or flickering LEDs indicate poor or
failed switch, OR failed LED.
turn on at the same time.
test has FAILED.
Failure of this inspection indicates that the DUT cannot
continue further testing.
13) Press the POWER button.
Verify that the unit turns OFF.
Problems with this inspection indicate that the Power button
has FAILED.
Failure of this inspection indicates that the DUT cannot
continue further testing.
14) Press the POWER button.
Verify that the unit turns ON.
Problems with this inspection indicate that the Power button
has FAILED.
Failure of this inspection indicates that the DUT cannot
continue further testing.
15) Unplug the power supply to the DUT.
the DUT. This is the end of the Front Panel Sub-Assembly electrical
test.
Be sure to verify that BOTH LEDs
Either type of problem indicates the
Then unplug all other cabling to