Graham-Patten SoundPals, User Manual

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SoundPals User's Guide DMIX-41 • 59
DMIX-41 Troubleshooting
The table below lists DMIX-41 problems and solutions.
Problem Procedure
No signal at
either AES
output.
•
Is power applied? Check LED and
supply.
•
Is there a current timing master? Check
for flashing green LED. If yes, consult
factory.
•
Is at least one input enabled as timing
master? Check for a lit green master
LED. If none, remove remote control
interface connector. Check
connections.
•
Does at least one input enabled as
master have an error-free input? Check
for at least one continuously lit green
LED with associated blinking or
extinguished red LED. If none, check
AES input signal associated with each
enabled master showing errors.
No audio on
AES output.
•
Is at least one error-free input not
muted? Check for an extinguished red
LED. If none, remove remote control
interface connector. Check
connections. If still none, check AES
inputs for valid signals.
•
Are all signals being mixed silent? Use
DAC to check audio on all mixed inputs.
Remote
interface not
active.
•
Remove the remote connector. Using a
short wire connect pin 6 to each pin in
turn. If operation is correct check
remote wiring and perform the following
tests.
•
Is remote interface driven with logic
levels? If yes, check that the low level
is between 0 V and
+
1 V with respect to
the chassis. Check high level is
between
+
4 V and
+
5 V with respect to
the chassis.
•
Is remote interface driven with contact
closures? If yes, check that the
common is correctly connected. Check
that the contact resistance is
<
100
Ω
.