4-2 Service Manual
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• Keep the ESD-sensitive part in its original shipping container (a special “ESD bag”) until you are
ready to install the part in the printer.
• Make the fewest 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 printer.
• Hold the ESD-sensitive part by its edge connector shroud (cover); do not touch its pins.
• If you need to put down the ESD-sensitive part for any reason, first put it into its special bag.
• Printer 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 printer
covers when you are not working on the printer, 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.
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