Cisco 7513 Series Manual - Halaman 9
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Halaman Cetak
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Keep your back straight and lift with your legs, not your back. If you must bend down to lift the
chassis, bend at the knees, not at the waist, to reduce the strain on your lower back muscles.
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When lifting the chassis, grasp the underside of the chassis exterior with both hands. Do not
attempt to lift the end of the chassis with the handles on the interface processor carriers; these
handles are not designed to support the weight of the chassis.
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Always disconnect all external cables before lifting or moving the chassis.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which can occur when electronic boards or components are
handled improperly, can result in complete or intermittent failures. Each processor module consists
of a printed circuit board that is fixed in a metal carrier. EMI shielding, connectors, and a handle are
integral components of the carrier. Handle processor modules by the metal frame or carrier only;
avoid touching the board (particularly avoid touching any components, connector pins, or the metal
fingers on the edge connector).
Following are guidelines for preventing ESD damage:
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Always use an ESD wrist strap or ankle strap and ensure that it makes good skin contact.
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When removing or installing interface processors, connect the equipment end of the ground strap
to the chassis ground screw on the interface processor end of the chassis.
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Place removed processor modules board-side-up on an antistatic mat or in a static shielding bag.
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If you are returning a replaced part to the factory, immediately place it in a static shielding bag
to avoid ESD damage to the board.
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Avoid contact between the board and clothing. The ESD strap only protects the board from ESD
voltages on the body; ESD voltages on clothing can still cause damage.
Caution
be between 1 and 10 megohms.
Cable Strain Relief
If possible, position the new replacement chassis close enough to the existing system so that you can
avoid having to disconnect power and interface cables. Be sure to disengage any strain relief devices
before attempting to pull the cables from the port. Following are descriptions of the different
methods of strain relief that are used on the AC-input and DC-input power cables and the various
types of network interface cables:
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On the AC power input receptacle (on the interface processor end of the AC-input powered
chassis), a cable retention band snaps up around the plug on the power cable to prevent it from
being inadvertently pulled out of the receptacle.
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On the DC-input power supply, use nylon cable ties to fasten the power cable to a bracket located
just to the right of the input terminal block. Carefully cut these cable ties before you disconnect
the power cable leads from the terminal block; replace the cable ties after you install the new
chassis, and wire the power cable leads to the terminal block.
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Serial interface cables (all types) use thumbscrews on the cable connectors that secure the cable
to the Fast-Serial Interface Processor (FSIP) port.
For safety, periodically check the resistance value of the antistatic strap. The measurement should
Cisco 7513 and Cisco 7576 Chassis Replacement and Upgrade Instructions
Cable Strain Relief
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