3com S8520X-28S 0235A370 User Manual

Product codes
0235A370
Page of 88
 
3-12 
 
Use the PGND cable provided with the switch to connect the grounding strip in the equipment room. 
Otherwise, the grounding effect may not be ensured, which easily causes damage to the switch.  
 
Installing a Power Module 
Each S5820X series provides two power module slots on its rear panel. Hot swappable power module 
slot 1 is empty when the switch is shipped, and hot swappable power module 2 is installed with a filler 
panel. You can select one or two power modules for your switch as needed. For details about optional 
power modules, refer to 
 on page 
This section describes how to install and remove the power module and the power cord. To prevent 
damage to the device and personal injury, follow the installation and power-on procedure illustrated in 
 and the power-off and removal procedure illustrated in 
.  
Figure 3-17 
Installation and power-on procedure 
Install the 
power module
Connect the 
power cord
Switch on the 
power module
Install the 
power module
Connect the 
power cord
Switch on the 
power module
 
 
Figure 3-18 
Power-off and removal procedure 
Switch off the 
power module
Disconnect the 
power cord
Remove the 
power module
Switch off the 
power module
Disconnect the 
power cord
Remove the 
power module
 
 
Installing the Power Module 
The procedures of installing any type of hot-swappable power module into the S5820X series are 
similar. The installation procedure is as follows:  
Step1 
Wear an ESD-preventive wrist strap, ensure a good skin contact and make sure that the 
ESD-preventive wrist strap is properly grounded.  
Step2 
Take the power module from the package and check that the power module model is as required.  
Step3 
Face the slot into which the  power module is to be inserted..  
Step4 
Insert the power module with the upside up (if you insert it with the upside down, the insertion is not 
smooth because of the specific structure design of the power module and slot). Grasp the handle of the 
module with one hand and hold the module bottom with the other, and then slide the module slowly 
along the guide rails into the slot (see callout 1 in 
).  
Step5 
Fasten the captive screw on the power module clockwise with a Philips screwdriver until the power 
module is fixed into the chassis (see callout 2 in 
).