Self Test Procedure - Mackie SR40-8 Service Manual

ULTRA MUTE SELF TEST PROCEDURE
The following procedure tests the Ultra Mute system. Performing it will not erase any
stored mute groups/scenes.
Step Procedure
1 Power off the console
2 Connect MIDI in to MIDI out, connect
pins 2 and 3 on the data port
3 While powering up, hold down Ultramute
control switches 0, 1, and 2
4 Release switches
5 Individually press all mute switches
(sequence not relevant)
6 Individually press all Ultramute control
switches (sequence not relevant)
7 Disconnect the MIDI in and MIDI out,
disconnect pins 2 and 3 on the data port
8 Press Ultramute control switches 8 and 9
simultaneously
9 Press and hold Ultramute control switches
8 and 9 again
10 Release switches
24
Result / Verify
n/a (the console is off)
n/a (you accidentally burn your finger
soldering pins on an old DB9 plug)
0, 1, and 2 LEDs light
Both numeric displays count 0-9, A-F (1-16
hex), all mute LEDs light
Switch's corresponding LED shuts off while
switch is depressed
Switch's corresponding LED lights while switch
is depressed (bottom row switches light same
LED's as top row)
Count on the numeric displays stops (MIDI =
first display, RS-232 = second)
All mute LEDs flash together
All LEDs off
System bypass LED on, TEST COMPLETE