Installation Manual
Quidway Eudemon 200 Firewall
Chapter 5 Hardware MaintenanceHardware
Maintenance
5-5
End
Remove the RPU
Locate the SDRAM
on the RPU
Remove the SDRAM
Install a new SDRAM
Install the RPU
Prepare tools
Start
End
Remove the RPU
Locate the SDRAM
on the RPU
Remove the SDRAM
Install a new SDRAM
Install the RPU
Prepare tools
Start
Figure 5-4
SDRAM maintenance flow
SDRAM is a component of Eudemon200’s mainboard, which can be upgraded and
replaced as needed. In general, it needs to be upgraded in the following situations:
z
The SDRAM capacity needs to be increased when the user upgrades the
application program.
z
The SDRAM capacity needs to be increased because the route table is too large
to be maintained by the Eudemon200 firewall or other applications consume large
memory.
z
The existing SDRAM is damaged.
Caution:
z
Do not touch the component on the surface of the SDRAM with bare hand. You can only take it at the
non-conductive edge.
You can only hold it by the non-conductive edge of the SDRAM, because the
SDRAM is prone to the electrostatic damage due to improper operations.
z
You may feel hard while removing the SDRAM, but do not overexert during the operation.
I. Remove an RPU
The SDRAM is located on the RPU. Before replacing the SDRAM, remove the RPU
(following the way introduced in Section 5.4 RPU Removal and Installation and make
sure of the SDRAM location.