4.2.5 Installing/Removing the Optional Service Cards
CAUTION
• Before touching the product (PBX, cards, etc.), discharge static electricity by touching ground or
wearing an
earthing strap. Failure to do so may cause the PBX to malfunction due to static electricity.
• When installing or removing the optional service cards, the power switch must be turned off, and the
AC power cord must be removed from the AC inlet.
• When installing or removing the optional service cards, do not put pressure on any parts of the mother
board. Doing so may result in damage to the PBX.
• Disconnect the AC power source before servicing the equipment.
Note
Make sure the AC power cord is not connected to the AC inlet of the PBX.
90 Installation Manual
4.2.5 Installing/Removing the Optional Service Cards
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