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System Checkout
Configuration
Mode
If the Test/Config Mode LED is illuminated steadily, the system is in either
configuration mode or walk test mode. If the LED is flashing, the configuration has
been corrupted and has been reset to defaults; you must therefore review / re-enter
your configuration.
Common
Trouble
If only a common trouble is indicated on the main panel and none of the above
confirming trouble indicators are on, then check the following for possible fault:
i) Check for any missing interconnection wiring.
ii) Check for any missing modules that are part of the configuration.
iii) Check jumper positions. Particularly ensure that the continuity jumper is installed
only on the last circuit adder module in the system.
iv) Check for improperly secured cabling.
CPU Fault This LED will only illuminate for a short period upon power up when system is
normal.It will illuminate steadily when there has been a major CPU failure. This
indicates the system is not functioning and main board must be replaced.
Message Description