Lenovo 104614U User Manual page 8

• ESD and holding system boards: Be careful when holding the system board. They are extremely
sensitive to ESD. Only touch the edge when holding the system board. Lay the system board with
components side facing upwards after taking the system board out of the protection bag or the sever.
Use the conductive foam pad (if any) rather than the system board package. Do not slide the system
board on any surface.
• Installing or removing jumper: Jumper is a small plastic conductor between two jumper pins. Some
jumpers have a small wing on the top for you to use fingertips or fine needle forceps to clip it. If the
jumper has no such wing, be careful when installing or removing it with needle forceps, and clip the
jumper's narrow face instead of the wide one. Clipping the wide face will damage the contacts inside
the jumper, which will lead to intermittent faults to some functions controlled by the jumper. Clip the
jumper carefully with pliers or other tools and do not squeeze when removing it. Otherwise, pins on the
system board may be bent or broken.
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