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Be
forewarned that the two fans present a serious hazard to fingers, tools, and meter probes. The fan blades
rota
te at high speed and have very sharp edges. They can quickly and easily remove a fingertip (gee ... how do
we
know this?) Coming into contact with a rotating fan blade will cause serious injury.
Whe
n reinstalling the top cover, make certain that all thirty screws are replaced, and that they are
snug
fit. Operating the unit with its cover removed
and
may compromise the ability of the Omnia to operate in high RF environments.
Na
rrowing down problems
Whe
n actually
troubleshooting your
emb
arking on an in-depth problem-solving mission. Take time to carefully consider whether your unit falls into
any of the following states:
1. T
he unit is totally dead. Is the power on? Is the line cord plugged into an outlet that has AC power? Is
an a
udio input level? Is there an audio output level? Is there a
scra
mbled, or not illuminated? Symptoms like these might indicate a po
examine the
power supply, be aware that it is
and
operate properly. Voltages measured when the power supply is not connected to the Omnia mo
may
not be correct.
2. T
he unit has power, but there is no audio output although the proc
first
thing to verify is whether t
help
s narrow down where the problem is. Look at the levels display. If there is input audio but no output audio
indi
cations, try cycling the unit's power. If that doesn't bring the operat
failu
r
e of some sort has occurred. If you get output levels but have no out
con
nected correctly. An analog out
devi
ce won't pass audio! Connect the appro
audi
o is making it to the next device.
The
next condition to check is to see if the failure has caused the
chec
k to see if the processing bargraphs are operating. If they are, then it's
stru
cture is sound and the system's hos
loss
of audio is confined to only one output port, e.
AES
/EBU output. Check the signal at each of these locations. If the signal is dead at all three, t
a di
gital audio problem after the dynamic processing DSP chips. If one of the output sections
then
it can be localized to that specific section.
Not
e: The composite outputs and the
to A
nalog converters. Therefore, it's possible for one type of output to fail without affecting the other. Likewise,
a fa
ilure in the AES/EBU driver section could result in the digital output being dea
system is operational.
4. Unit will not boot and "Downloading OS" is displayed ov
rear-panel PC software card. Try a different PC card containing the same style of Omnia software (fm Turbo,
net, or am) if one is available. Contact Omnia Customer Support or your dealer to obtain a replacement card.
or without all of the retaining screws will void your warranty
Omnia-3, try to ascertain some preliminary information first before
switching type, and therefore requires a load in order to start up
he front panel jog-wheel is operational. Verification of front panel operation
put connected to a digital device, or a digital output connected to an analog
priate test generator to the output cables to verify analog/digital
t processor is working. At this point, it would be a good idea to see if the
g. a composite output, the discrete left/right outputs or the
discrete left/right outputs are operated from their own specialized Digital
power indication? Are the LCD screens blank,
wer supply problem. If you wish to
essing bargraphs are working. The
ion back to normal, then a hardware
put audio, verify that the outputs are
processing to cease. Using program material,
a good indication that the basic DSP
er and over. This usually indicates a corrupt
96
tightened to a
there
therboard
hen this points to
is not operating,
d, while the rest of the
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