IBM 8688 manual Handling static-sensitive devices, Grounding requirements

4.Remove the cover.

5.Check for any obvious non-IBM alterations. Use good judgment as to the safety of any non-IBM alterations.

6.Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.

7.Check for worn, frayed, or pinched cables.

8.Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with.

Handling static-sensitive devices

Any server part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge (ESD), or static-sensitive. ESD damage can occur when there is a difference in charge between objects. Protect against ESD damage by equalizing the charge so that the server, the part, the work mat, and the person handling the part are all at the same charge.

Notes:

1.Use product-specific ESD procedures when they exceed the requirements noted here.

2.Make sure that the ESD-protective devices you use have been certified (ISO 9000) as fully effective.

When handling static-sensitive parts:

vKeep the parts in protective packages until they are inserted into the product.

vAvoid contact with other people.

vWear a properly grounded wrist strap against your skin to help eliminate static electricity from your body.

vPrevent the part from touching your clothing. Most clothing is insulative and retains a charge even when you are wearing a wrist strap.

vUse the black side of a grounded work mat to provide a static-free work surface. The mat is especially useful when handling static-sensitive devices.

vSelect a grounding system, such as those in the following list, to provide protection that meets the specific service requirement.

Note: The use of a grounding system is desirable but not required to protect against electrostatic discharge damage.

–Attach the ESD ground clip to any frame ground, ground braid, or green-wire ground.

–Use an ESD common ground or reference point when working on a double-insulated or battery-operated system. You can use coax or connector-outside shells on these systems.

–Use the round ground-prong of the ac plug on ac-operated servers.

Grounding requirements

Electrical grounding of the server is required for operator safety and correct system function. Proper grounding of the electrical outlet can be verified by a certified electrician.

200IBM xSeries 450 Type 8688: Hardware Maintenance Manual and Troubleshooting Guide