Cadac B-Type Installation & User Manual Download

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APP-V

Revision B2005-2

B-Type

16. If MAINS OK LED is illuminated but O/P OK LED is not, check the 15-way ‘D’-

connector on the PSU block is tightened. Check that the connector on the 8023
control card is pushed in all the way.

17. If the O/P LED is still not lit, remove the 15-way ‘D’-connector and link pins 9 - 10

and 1 - 7 on the PSU. If the PSU starts, the 8023 card or its wiring is fault. If the
PSU is still not working, it should be returned to the factory.

18. Check the fan (on back of PSU-block) is running. If it is not the PSU will overheat

and shut down or not provide full O/P capability. The fan can become stuck if
subjected to a hard knock - try to free the fan with the power turned OFF. If the
fan does not come on, return the PSU to the factory.

19. If the PSU shuts down when connected to the console, check that each PSU-

block can deliver approximately 103A and start into 90A. With the PSU discon-
nected from any outside loads, check that there is no reference to mains earth
from the 13V and 48V rails.

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There are times during the operation of a digital control system when things happen
that are unexpected. A data message may be formatted in an unexpected manner or
a hardware device may report an expected condition. These events may be trivial in
that they will not affect the overall operation of the system or they may be fatal in that
the system can no longer continue to function. The CADAC consoles have a system
of logging these unexpected events (and some of the user actions) in the battery
backed memory of the Central Control Module. The log reports these events in a way
that does not affect the operator progressing through the performance of the show so
3 different event categories are defined:

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If any of the following errors occur it will usually be after power-up (or RESET) when
the CCM tests its own internal memory and hardware device. The CCM will display a
message and flash all of the keypad buttons to attract the user’s attention. The CCM
will continue its normal function after the user has pressed a button to acknowledge
the fault report.

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When the CCM starts it checks its battery backed memory. Several different tests are
performed and if any of them fails this error is reported and logged.

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A special area of the battery backed memory stores the console’s “mapping informa-
tion”. If this area is found to be corrupted, then this error is reported and logged. The
user will then have to map the console to reset this information, please see the oper-
ating manual for instructions.

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It is possible for the user to clear all the battery backed memory if it is suspected of
being corrupted. Hold the P and N buttons down and RESET the CCM, keep the P
and N buttons held down until the CCM displays the message “Manual Reset”. The
buttons may then be released and the CCM displays the message “Maps lost”.

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There is a wire in the data communication bus that is used by some of the program-
mable modules to request attention from the CCM. It is normally held at logic high
and if it is pulled low then the CCM searches through the for one that requires atten-
tion. When the CCM starts it will perform any necessary function to clear all modules
that may be requesting attention, if the attention line is then still seen to be logic low,
the CCM will report this error meaning that pin 23 or U1 appears to be held low.

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When the CCM first starts running, it will try to exchange a message with the “motor
fader communication processor” and if it is not successful it will report this error.