4. Repair information
Read the following before handling electronic parts.
Warning:
Handling ESD-sensitive parts
Many electronic products use parts that are known to be sensitive to electrostatic discharge (ESD). To prevent
damage to ESD-sensitive parts, follow the instructions below in addition to all the usual precautions, such as
turning off power before removing logic boards:
Keep the ESD-sensitive part in its original shipping container (a special "ESD bag") until you are ready to
•
install the part into the machine.
Make the least-possible movements with your body to prevent an increase of static electricity from clothing
•
fibers, carpets, and furniture.
Put the ESD wrist strap on your wrist. Connect the wrist band to the system ground point. This discharges
•
any static electricity in your body to the machine.
Hold the ESD-sensitive part by its edge connector shroud (cover); do not touch its pins. If you are removing
•
a pluggable module, use the correct tool.
Do not place the ESD-sensitive part on the machine cover or on a metal table; if you need to put down the
•
ESD-sensitive part for any reason, first put it into its special bag.
Machine covers and metal tables are electrical grounds. They increase the risk of damage because they
•
make a discharge path from your body through the ESD-sensitive part. (Large metal objects can be
discharge paths without being grounded.)
Prevent ESD-sensitive parts from being accidentally touched by other personnel. Install machine covers
•
when you are not working on the machine, and do not put unprotected ESD-sensitive parts on a table.
If possible, keep all ESD-sensitive parts in a grounded metal cabinet (case).
•
Be extra careful in working with ESD-sensitive parts when cold-weather heating is used, because low
•
humidity increases static electricity.
Repair information
4-1