Screw Identification and Tightening

Figure 4-3. Screw Identification

CAUTION: It is essential that the correct length screw be used when reinstalling a screw. Otherwise, hardware damage could result. Make sure that the screw is properly aligned with its corresponding hole, and avoid overtightening.

The removal procedure illustrations provide the correct screw length in parentheses next to the screw's label. Also, a graphic for that length screw is included in the illustration. Match the actual screw to the graphic in the illustration to check for correct length.

ZiF Connectors

Figure 4-4. Disconnecting an Interface Cable

Some of the computer's interface connectors are zero insertion force (ZIF) connectors. These connectors are not removable, but they must be released to disconnect a cable from them.

CAUTION: The ZIF connectors are fragile. To avoid damage, do not apply too much pressure to the movable part of the connector.

To disconnect an interface cable from a ZIF connector, follow these steps:

1. Insert a small flat-blade screwdriver or a chip-removal tool under the movable part of the connector.

If a small flat-blade screwdriver is unavailable, use a chip-removal tool to carefully pry up on first one end of the movable part of the connector and then the other end.

2. Pull gently upward on the movable part of the connector until it releases the interface cable.

3. Grasp the interface cable and pull it out of the connector.

To reconnect an interface cable to a ZIF connector, follow these steps:

1. Use a flat-blade screwdriver or chip-removal tool to open the movable part of the ZIF connector.

2. Orient the end of the interface cable with the ZIF connector, and insert the end of the cable into the connector.

3. While holding the cable in place, close the ZIF connector.

To ensure a firm connection, make sure the ZIF connector is completely closed.

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