The same configuration that was active before the system was
reset will be active after reset.
When the cards and connected audio devices reset, they
momentarily stop their current activity and restart. During this
process configuration information is downloaded to the cards and
audio devices from the CPU card’s non-volatile RAM.
Note: Under normal operating conditions it is not necessary to
perform a full reset. Technical personnel might perform a full reset
if they believe that the CPU card is operating incorrectly as a
result of corruption of the microprocessor’s internal data or
instruction sequence.
Table 11: Key to CPU card lights and controls
5.5.1 Using the embedded configuration
In addition to the four EHX configurations that can be stored on the card, the
CPU card also includes an embedded configuration. The embedded configuration
is designed for fast fault checking following a system upgrade or field install (for
example, checking hardware connections with user panels and interface cards).
Note: The embedded configuration may also be used as a back-up configuration, in the
very rare event that a system error renders the other configurations unusable.
To activate the embedded configuration:
1) On the front of the CPU card, press and hold the CONFIG and the ENG
buttons.
2) Simultaneously, reset the CPU card by pressing and holding the CPU
card’s lower RESET button (the Full reset button).
Note: A tool, such as a pin, is used to press and hold the RESET
button.
3) Continue holding the CONFIG, ENG and RESET buttons until the CPU
card’s dot matrix display displays 0. It may take 1 - 2 seconds before 0
is displayed.
The embedded configuration has now been activated.
To deactivate the embedded configuration, perform a CPU card reset.
The configuration (1, 2, 3 or 4) that was previously active on the CPU card
replaces the embedded configuration as the active configuration.
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