Handling Electrostatic Discharge-Sensitive Devices - IBM IntelliStation M Pro Hardware Maintenance Manual

3. Check the power cord:
4. Remove the cover.
5. Check for any obvious non-IBM alterations. Use good judgment as to the safety
6. Check inside the unit for any obvious unsafe conditions, such as metal filings,
7. Check for worn, frayed, or pinched cables.
8. Make sure that the power-supply cover fasteners (screws or rivets) have not

Handling electrostatic discharge-sensitive devices

Any computer part containing transistors or integrated circuits (ICs) should be
considered sensitive to electrostatic discharge (ESD). 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
2. Make sure that the ESD-protective devices you use have been certified (ISO
When handling ESD-sensitive parts:
v Keep the parts in protective packages until they are inserted into the product.
v Avoid contact with other people.
v Wear a grounded wrist strap against your skin to eliminate static on your body.
v Prevent the part from touching your clothing. Most clothing is insulative and
v Use the black side of a grounded work mat to provide a static-free work surface.
v Select a grounding system, such as those in the following list, to provide
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IBM IntelliStation M Pro Types 6220 and 6230: Hardware Maintenance Manual
a. A third-wire ground connector must be in good condition. Use a meter to
measure third-wire ground continuity for 0.1 ohm or less between the
external ground pin and frame ground.
b. The power cord must be the applicable type as specified in the parts
listings.
c. Insulation must not be frayed or worn.
of any non-IBM alterations.
contamination, water or other liquids, or signs of fire or smoke damage.
been removed or tampered with.
here.
9000) as fully effective.
retains a charge even when you are wearing a wrist strap.
The mat is especially useful when you are handling ESD-sensitive devices.
protection that meets the specific service requirement.
Note: The use of a grounding system is preferable but not required to protect
against ESD 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 connector on ac-operated computers.