7. Inspection
7-1. Inspection before Power on
Before turning on the switch, check if the power cord
is plugged in and the fuse is in place. All
the
modules should be placed and secured. Make
sure
that the connection of exchange and stations are
completed.
Turn on the switch on the back of the exchange.
AC indicator lamp on the front of the exchange
should be on. If not, electricity is not supplied.
Turn off the switch and check the cord and fuse.
Handle Plug-in units with care; plug-in units in-
corporate CMOS. After the exchange is plugged in,
do not attempt to disconnect the plug-in unit.
If you wish to connect batteries, do so at this
point. Connect
the
cord from the power source.
Use 2 batteries: voltage; 24V, capacity; 3.5AH.
With batteries connected, the unit automatically
switches to battery operation when AC power source
is cut off. DC indicator lamp will be on accom-
panied by buzzer. To stop the buzzer, push the
buzzer reset switch.
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