Dialogic SS7G21, SS7G22 manual Removing and Installing the Top Cover

Chapter 10 Working Inside the Product

Caution

Electrostatic Discharge (ESD) and ESD Protection:

ESD can damage Hard Disk Drives (HDDs), boards, and other parts. We recommend that you do all procedures in this chapter only at an ESD-protected workstation. If one is not available, provide some ESD protection by wearing an anti-static wrist strap attached to chassis ground (any unpainted metal surface) on your product when handling parts.

Caution

ESD and Board Handling:

Always handle boards carefully. They can be extremely sensitive to ESD. Hold boards only by their edges. After removing a board from its protective wrapper or from the product, place it on a grounded surface free of static electricity. Do not slide boards over any surface.

Caution

Cooling and Air Flow:

For proper cooling and airflow, always install the Top Cover before turning on the product. Operating the product without the Top Cover in place can damage product components.

10.3Removing and Installing the Top Cover

Removal of the Top Cover is necessary when installing or removing internal components. The Top Cover does not have to be removed when installing or replacing Power Supply Modules or Hard Disk Drives (HDDs), but it must be removed for installing SS7 Signaling Boards.

WARNING

If the unit is rack-mounted, make sure that the rack is anchored securely so it will not tilt forward when the unit chassis is extended. A crush hazard exists should the rack tilt forward that could cause serious injury.

Caution

For proper cooling and airflow, do not operate the SS7G21 or SS7G22 with the Top

Cover removed. Always reinstall the Top Cover before turning the unit on.

To remove the Top Cover, follow this procedure:

1.Remove the Top Cover securing screw, which is on the side of the unit, near the back corner (labelled A in Figure 19). Retain the screw for replacement when the Top Cover is refitted.

2.Push down on the blue locking button on the Top Cover while sliding the Top Cover rearward to release it from the chassis.

3.Lift the Top Cover up to remove.

To install the Top Cover (after completing internal work), follow this procedure:

1.Place the Top Cover over the top of the chassis, slightly back from the front panel.

2.Slide the Top Cover forward until the blue locking button snaps shut.

3.Replace, and securely tighten, the Top Cover securing screw (labeled A in Figure 19).

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