Installation guide

10
General Maintenance Guidelines
OL-2189-01
General Safety Precaution and Maintenance Guidelines
Warning Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
Warning Do not use this product near water; for example, near a bathtub, washbowl, kitchen sink or laundry
tub, in a wet basement, or near a swimming pool.
Warning During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly
touch the backplane with your hand or any metal tool, or you could shock yourself.
Warning Before opening the chassis, disconnect the telephone-network cables to avoid contact with
telephone-network voltages
Warning Thisequipmentistobeinstalledandmaintainedbyservicepersonnelonlyasdefined byAS/NZS3260
Clause 1.2.14.3 Service Personnel.
Warning To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord.
General Maintenance Guidelines
This section covers the following topics:
• Installation and Replacement Suggestions, page 10
• Hot Swapping Line Cards, page 11
Installation and Replacement Suggestions
The following examples list recommended installation and replacement practices for the 8xDMTs.
Caution Any line card that is only partially connected to the backplane can disrupt system operation.
• Do not force the line card into its slot. This action can damage the pins on the backplane if they are
not aligned properly with the line card.
• Ensure that the line card is straight and not at an angle when you install the line card in the slot.
Installing the line card at an angle can damage the card. Use the guide rails to install the line
card correctly.
• Fully depress the ejector levers to ensure that the card connector mates with the backplane correctly.
Firmly seat the line card in the slot.