H3C Technologies H3C S9500 Series Switches - Manual (Page 64)

Installation Manual
H3C S9500 Series Routing Switches
Chapter 3 Installation Preparation
3-2
Caution:
You can only hold the handles at both sides of the chassis when moving the switch, but
not the plastic panel of the chassis, the handle of the fan frame, the handle of the PSUs
or the air vents of chassis.
As these parts are not designed for bearing the weight of the entire chassis, any
attempt trying to carry the switch with these parts may impair the switch and even injure
yourself.
3.1.4 Wearing an ESD-Preventive Wrist Strap
To prevent the electronic components from being damaged by the electrostatic
discharge (ESD), take ESD measures for the area where the switch is located and note
the issues below:
z
Always wear an ESD-preventive wrist strap when installing the parts, especially
the electric printed circuit boards.
z
Hold the circuit board by the edge. Do not touch the components or the electric
printed circuit.
Take the following steps to use the ESD-preventive wrist strap.
Step 1: Wear the wrist strap on your wrist.
Step 2: Lock the wrist strap tight around your wrist to keep good contact with the skin.
Step 3: Insert it into the hole peculiar to ESD-preventive wrist strap in the chassis or
attach it to the grounding screw of the chassis the alligator clips.
Step 4: Make sure that the ESD-preventive wrist strap is well grounded.
Caution:
For the sake of safety, check the resistance of the ESD-preventive wrist strap. The
resistance reading should be in the range of 1 to 10 Mohm between human body and
the ground.
3.1.5 Safety Recommendations against Laser
Some LPUs of the S9500 series have optical interfaces. In operating status, it is
prohibited to stare into the open optical interface because the laser being transmitted
through the optical fiber will produces a small beam of light which has very high power