Mackie Ultra 34 Ultrapilot Service Manual

Page 2

ULTRAMIXSELF TEST PROCEDURE

Setup:

Connect the MIDI OUT iackof the DUT to the MIDI IN jackof the DUT.
Use Control Interface Port test adapter to connect the TXto the RXsignal at the CIPl.

RAM Test: (Tests SRAM and EEPROM)

Action:

Response:

Apply power to DUT. 2

PASS : The three LEDs on thefront panel will light up sequentially
(MIDI first, then Bypass, then Local). All LE Ds will then go off and
the Bypass LED will come back on, indicating that the DUT is in its
default power-on mode and is readyfor normal operation.

FAIL: The bottom two LEDs (Bypass and Local Mode) will flash
quickly and the DUT will hold in this failure mode.

IO Port Test: (Tests MIDI IO and Control Interface Port IO)

Action:

Response:

Simultaneously apply power to DUT and
depress Local Mode switch.3

PASS : All threefront panel LEDs should flash at about 4 Hz.4

FAIL: One (or more) of the LEDs remain unlit,
Bottom (Local Mode) LED =CIP failure
Middle (Bypass) LED = MIDI port failure

Switch Test: ( Tests the front panel switches )

Action:

Response:

This is a continuation of the IO Port Test.
Depress each switch, one switch at a time.

When a switch is depressed, its companion LED will go off as long
as the switch is engaged. Release the switch and the LED should
res umeflashing.

1Control Intreface Port

2 If DUT is already powered up, remove power then reapply power.

3 See Note2
The LEDs will not be flashing in sync, but thats ok.