Solid State Logic AWS 900+ Owner's Manual page 134

Troubleshooting
To eliminate the first possibility, power down the console and re-seat the 16-pin IDC connector between the two
panels. Re-power the console and check the condition of the fault. As in previous examples, we will assume
that this did not resolve the problem. The next possibility to eliminate is that one of the Meter Panels is faulty.
Power down the console and swap Meter Panels between Bays 1 and 2. Re-power the console. If the panel
originally in Bay 1 was faulty, then neither Bay 1 or 2's metering will now function. In this cause you should
revert to the original configuration and replace the faulty panel. If, however, the problem was due to the failure
of Bay 2's Meter Panel output stage, then you should find that all your meters are now functioning correctly. As
Bay 1 is not required to buffer data onto another panel, this fault will not effect the operation of the console and
can be left in this position allowing you continue working unhindered.
Replacing Modules
Having identified the source of the problem, you are now in a position to replace the faulty part. If you
purchased an AWS 900+ spares kit, then locate the relevant assembly and follow the replacement instructions
below. If, however, you do not have a replacement card to hand, you should contact your local SSL distributor
who will be able to supply you with a replacement.
The channel and centre section modules can easily be removed from the console for replacement, but first you
must disconnect the console from its AC power source. Before turning off the power, make sure that you switch
off, or overpatch, all monitor sends. If you power down the console with any of these connected, the DC thump
generated could potentially damage your monitors.
IMPORTANT
The console's AC Line Power unit is mains powered, and is not transformer isolated. This unit generates DC
voltages up to 360V. This voltage is sufficient to be lethal. Always ensure that the power cord is physically
removed from the power inlet before attempting any maintenance.
Removal of modules while power is applied to the console will almost certainly result in component failure.
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AWS 900+ Owner's Manual