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Handling and Storing FPCs

This section explains how to avoid damaging the FPCs that you install into routing platforms. Many components on the FPC are fragile.

Failure to handle FPCs as specified in this document can cause irreparable damage.

This section discusses how to hold FPCs in both the vertical and horizontal positions. Regardless of orientation, this section uses the same terms for all four edges of the FPC (see Figure 1):

The instructions in this section apply to all FPCs. The figures show T640 FPCs.

Figure 1: FPC Edges

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Holding an FPC

You hold an FPC vertically (except with an M20 router) when installing it into the chassis or an equipment rack. When carrying an FPC, you can hold it either vertically or horizontally.

An FPC configured with four PICs can weigh as much as 32 lb (14.5 kg). Be prepared to accept the full weight of the FPC as you lift it.

To hold an FPC vertically, follow this procedure (see Figure 2):

  1. Orient the FPC so that the faceplate faces you.
  2. Place one hand around the FPC faceplate about a quarter of the way down from the top edge. To avoid deforming the electromagnetic interference (EMI) shielding strip, do not press hard on it.
  3. Place your other hand at the bottom edge of the FPC. If the FPC has heat sinks about midway between the faceplate and connector edge, place your other hand against the heat sinks.

    Figure 2: Holding an FPC Vertically

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If the FPC is horizontal before you grasp it, place your left hand around the faceplate and your right hand along the bottom edge.

If the FPC is vertical before you grasp it (for example, if it is installed in a routing platform), you can place either hand around the faceplate and your other hand under the bottom edge.

To hold an FPC horizontally, follow this procedure (see Figure 3):

  1. Orient the FPC so that the faceplate faces you.
  2. Grasp the top edge with your left hand and the bottom edge with your right hand. If the FPC has heat sinks about midway between the faceplate and connector edge, place your right hand against the heat sinks.

You can rest the faceplate of the FPC against your body as you carry it.

Figure 3: Holding an FPC Horizontally

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As you carry the FPC, do not bump it against anything. FPC components are fragile.

Never hold or grasp the FPC anywhere except places that this document indicates. In particular, never grasp the connector edge, especially at the power connector in the corner where the connector and bottom edges meet (see Figure 4).

Figure 4: Do Not Grasp the Connector Edge

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Never carry the FPC by the faceplate with only one hand (see Figure 5).

Figure 5: Do Not Carry an FPC with Only One Hand

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Do not rest any edge of an FPC directly against a hard surface (see Figure 6).

Figure 6: Do Not Rest the FPC on an Edge

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If you must rest the FPC temporarily on an edge while changing its orientation between vertical and horizontal, use your hand as a cushion between the edge and the surface.

Storing an FPC

You must store an FPC as follows:

When you store an FPC on a horizontal surface or in the shipping container, always place it inside an antistatic bag. Because the FPC is heavy, and because antistatic bags are fragile, inserting the FPC into the bag is easier with two people. To do this, one person holds the FPC in the horizontal position with the faceplate facing the body, and the other person slides the opening of the bag over the FPC connector edge.

If 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.

Never stack an FPC under or on top of any other component (see Figure 7). Never lay an FPC component-side down.

Figure 7: Do Not Stack FPCs

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