Huawei Quidway Eudemon 200 Installation Manual page 55

Installation Manual
Quidway Eudemon 200 Firewall
Prepare tools Prepare tools
Remove the RPU Remove the RPU
Locate the SDRAM Locate the SDRAM
Remove the SDRAM Remove the SDRAM
Install a new SDRAM Install a new SDRAM
Install the RPU Install the RPU
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:
The SDRAM capacity needs to be increased when the user upgrades the
application program.
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.
The existing SDRAM is damaged.
Caution:
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.
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.
Start Start
on the RPU on the RPU
End End
Chapter 5 Hardware MaintenanceHardware
5-5
Maintenance