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4. Repair Information
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 printer.
•Make the least-possible movements with your body to prevent an increase of static electricity from clothing fibers, carpets, and furniture.
•Secure the ESD wrist strap around your wrist and connect the wrist band to the engine 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 the pins. If you are removing a pluggable module, use the correct tool.
•Do not place the ESD-sensitive part on the printer cover or on a metal table, as electrical grounding may occur, which increases the risk of damage due to the discharge path your body could establish through the ESD-sensitive part. (Large metal objects can be discharge paths without being grounded.)
•When laying the ESD-sensitive part down, always return it to the ESD-sensitive bag.
•If possible, keep all ESD-sensitive parts in a grounded metal cabinet (case).
•Take care working with ESD-sensitive parts when cold weather heating is used, as low humidity increases static electricity.
