KX-TDA3194XJ - Panasonic PBX Service Manual (repair manual). Page 9

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To protect the main board from static electricity, do not touch parts on the main board or on the optional service cards.To dis-
charge static electricity, touch ground or wear a grounding strap.

• When installing or removing the optional service cards, the power switch of the PBX must be in the off position.
• For each card, the maximum number that can be installed in the PBX is listed in “1.3.1 Optional Equipment”.
• Any card that exceeds the capacity of the PBX will be ignored.
• When the PBX starts up with an invalid configuration, some cards will be ignored.

1. Before installing the optional service cards, cut and remove the appropriate dummy cover plates from the main unit.

For safety reasons, smooth the cut edges after removing the dummy cover plates.

2. Position the card in the open slot, making sure that the tabs on the both sides of the card fit into place. Then, holding the card

firmly in place, lower the rear end so that the hole of the card fits over the extension bolt.

When installing the optional service cards, do not put pressure on any parts of the main board (e.g., tall capacitors). Doing
so may result in damage to the PBX.