4.1.3.1 Disconnecting the CPU backup battery
Before performing any service on the CPU card, the backup battery must be
disconnected. To do so, place the CON9 jumpers in the OFF position as
described in the previous procedure.
Table 4-1: CON9 Pin configuration
If the matrix is going to be stored for more than 3 months, the CPU backup
battery needs to be temporarily deactivated while the matrix is stored.
To do so, put the CON9 jumper in the OFF position as described above. In order
to power up and start operating the matrix, reconnect the CPU backup battery
by placing the CON9 jumper in the ON position, as described above.
Note: Battery deactivation should be carried out by qualified service personnel.
4.1.3.2 Low power warning
If the CPU card is left unpowered for a period of time the batteries for the
battery backed up RAM may become discharged. This results in the run time
information being lost.
If this state is detected by the CPU card then the CPU card will provide
signalization in the form of 2 rapid flashes followed by a slow flash of the OK
LED. If EHX is logging, then the following message will appear in the log.
Non Volatile Data is invalid - Please check Battery Voltage
If on successive power downs of the Eclipse HX-Delta matrix the above state is
detected, and the message appears in EHX logs, then it is advisable to check the
health of the CPU card on board battery, which should be nominally at least
2.8V.
The minimum at which the data may remain intact is around 1.5V but normally
the battery should be replaced before the voltage drops to this level.
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type.
Lithium batteries can overheat or explode if they are shorted.
When handling the CPU card or a loose battery, do not touch any
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