Maintaining T640 Pics And Pic Cables; Figure 82: Do Not Stack Fpcs - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide
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Maintaining T640 PICs and PIC Cables

Purpose
Action
156
When storing an FPC with one person, you must insert the FPC into a bag by yourself.
First lay the FPC horizontally on a flat, stable surface, component-side up. Orient the
FPC with the faceplate facing you. Carefully insert the FPC connector edge into the
opening of the bag, and pull the bag toward you to cover the FPC.
CAUTION: To prevent damage when storing FPCs:
Never lay an FPC component-side down.

Figure 82: Do Not Stack FPCs

Never stack an FPC under or on top of any other component (see Figure
82 on page 156).
T640 FPC Description on page 18
Troubleshooting the T640 FPCs on page 169
For optimum router performance, verify the condition of the PICs and PIC cables.
On a regular basis:
Use the cable management system to support cables and prevent cables from
dislodging or developing stress points.
Place excess cable out of the way in the cable management system. Do not allow
fastened loops of cable to dangle from the connector or cable management system,
because this stresses the cable at the fastening point. Putting fasteners on the loops
helps to maintain their shape.
Keep the cable connections clean and free of dust and other particles, which can cause
drops in the received power level. Always inspect cables and clean them if necessary
before connecting an interface.
Label both ends of PIC cables to identify them.
The following guidelines apply specifically to fiber-optic cable:
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