Is there a key sequence for the DM3200...

[MrKnobs]

... that activates system tests like on the DM24 mixer?

Thanks!

Terry D.

 

[Jarno]

Apply power to the DM-3200 while holding down the
SHIFT + Output Assign 1 + Output Assign 2 keys.

More info found on Service Manual:
viewtopic.php?f=55&t=55