Alesis DEQ830 Service Manual page 39

Front Panel Sub Assembly Test CON'T
25) Press PROGRAM.
DO NOT RUN THIS TEST FOR MORE THAN ONE MINUTE.
EXCESSIVE POWER USAGE WILL CAUSE POWER SUPPLY
TO OVERHEAT.
Verify that the front panel LEDs shows "ALL" for 1 second.
Verify that all the LEDs are on, that they have a consistent
brightness and that they are not flickering.
Problems with this inspection indicates that the unit is
problems with its LED display, and that the DUT has FAILED.
Failure of this test indicates that this sub-assembly cannot
continue further testing.
26) Press PROGRAM.
Verify that the front panel LEDs shows "SWITCH" for 1 second.
27) Press Band Buttons 0-29, LVL.
Verify that while the button is held, the display shows "BND X"
where X is the band number.
When pressing the LVL button, the band number shown is "30"
Verify that the display does NOT show "ERROR" or "COMBO"
Problems with this inspection indicates that the unit has
problems with its switches, and that the DUT has FAILED.
Failure of this test indicates that this sub-assembly cannot
continue further testing.
28) Press CHANNEL Buttons 1-8
Verify that while the button is held, the display shows "CHN X"
where X is the channel number.
"0".
Verify that the display does NOT show "ERROR" or "COMBO"
Problems with this inspection indicates that the unit has
problems with its switches, and that the DUT has FAILED.
Failure of this test indicates that this sub-assembly cannot
continue further testing.
This goes to the ALL led test.
This goes to the SWITCH test.
The last channel button is "7".
The first band button is "0".
The first channel button is