In Case Of System Failure - DigiDesign D-show Manual

Table 28. Troubleshooting D-Show Errors and Messages
Symptom or Message
Power Supply Alert
Control Surface Change
Date & Time Check

In Case of System Failure

D-Show includes multiple redundancy and fail-safe routines
that help protect against problems that could interrupt audio.
These include the ability to maintain mix control even if a
failure occurs, to reset software and hardware components,
and to completely reset and reinstall the system software.
For maximum protection, the Redundant Power Supply and
Redundant Snake options are available to provide additional
backup power and system communication for uninterrupted
operation.
Maintaining Mix Control
If at any time the system fails, or if the system is reset or re-
started, the D-Show backup mode is automatically engaged to
maintain audio throughput and essential mix control.
While the backup personality is engaged, a dialog appears
on-screen in the banner display. The system then begins to re-
set itself in the background, while you can continue to use the
faders and mute switches to perform basic mixing. Plug-Ins
continue to process audio but their controls cannot be
changed until the process is complete.
Possible Cause
A power supply is failing or is not plugged in.
A power supply jumper switch is set incor-
rectly.
A unit Bus ID has changed, or a new sidecar
has been detected.
Clock setting of D-Show system should be
checked against current time.
Solution
Click Review to show the Options > Devices page. Reset
units as needed (see "Resetting Hardware Components" on
page 198).
Check the power supply jumper switch to make sure it
matches the number of installed power supplies in the unit.
(See the Redundant Power Supply Installation Guide.)
Click to clear the message. Check unit Bus IDs to make sure
input channel strips are arranged as desired.
Check and reset D-Show system time in the Options > Misc
page. Incorrect system time can affect D-Show data transfer
and plug-in authorizations.
If clock problems persist, the battery in the FOH Rack may
need to be replaced.
Features that Remain Active
The following essential mixing features remain available
while the backup personality is engaged:
• Bank Input Channels (Banks A–D); adjust levels and mutes.
(FX Returns are banked independently of Input Channels.)
• Bank to FX Returns; adjust faders and mutes
• Bank Output faders; adjust faders and mutes
• Control VCA masters, including VCA mutes, and have all
members of the VCA group reflect VCA adjustments
• Display the correct name for any fader in its 6-character dis-
play, even while banking
• Meter input signals on the channel input meters, and meter
bus outputs on the assignable meterbridge. The Selected
Channel meter continues to provide metering for the last
selected channel. Meter mode selection buttons remain ac-
tive on meterbridge (however, Meter mode does not auto-
matically follow output selection, if configured to do so).
• Compressor and gate meters remain active for all Input
Channels (however, Comp In and Gate In switches are not
available)
• Meterbridge System Status LEDs turn off
• Channel select is disabled for all inputs and outputs
Switch the Mute Group Masters, and see the effect on the
channels with member-mutes (flashing mute switches)
All 6-character displays switch to green
• Adjust near-field monitor and headphone levels
Chapter 27: Troubleshooting 195