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.
• 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.
Note
Make sure the AC power cord is not connected to the AC inlet of the PBX.
68 Installation Manual
4.2.5 Installing/Removing the Optional Service Cards
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