Alesis DEQ830 Service Manual page 28

Rear Panel Sub Assembly Test – ANALOG CON'T
4) Press PROGRAM until unit displays "A."
Verify that the front panel LEDs shows test messages:
EEPROM -> COL -> ROW -> ALL -> SWITCH -> MIDI
STOP here.
not testing this feature and have not attached the MIDI
loopback cable.
5) Press PROGRAM.
Verify that the front panel LEDs shows test "A." for AUDIO AP
TEST.
6) When in Factory Test Mode, the unit will bypass audio so that AP
tests can run.
sequence. It is NOT necessary to enter a serial number since one has
not been assigned to the sub-assembly at this stage.
TESTS at the appropriate menu to run all AP tests. The menu system
should be self-explanatory and will guide the user through connection
checks. DISREGARD instructions to power-up the DUT, as the DUT has
already been powered, and is already in the correct Factory Test
Mode.
Verify that the tests run without displaying a "Test Failed"
message.
Problems with multiple test failures may be an indication of
faulty test connection.
found with the cabling.
correctly, then the DUT has FAILED.
Failure of this test indicates that this sub-assembly cannot
continue further testing.
7) Unplug the IEC Power Cable to the BB01 Power Supply.
other cabling to the DUT.
Assembly Analog test.
test.
IGNORE any messages regarding MIDI, since we are
Press ENTER on the computer to start the test
Repeat the tests if a problem was
If all the cables have been connected
This is the end of the Rear Panel Sub-
Proceed to the Rear Panel Sub-Assembly Digital
Select ALL
Then unplug all