user manual

Chapter 5: System Maintenance
5.3 Replacing or Upgrading Memory Modules
5.3.1 Memory Module Installation Overview

The subsystems come with a pre-installed 256MB (or above) DDR RAM
DIMM module on the controller. The controller supports one memory module
for the capacity up to 1GB. If a DDR RAM DIMM modules with a different
size is preferred or the original memory module has failed in some way, the pre-
installed module must be removed and replaced by a new one. Replacement and
installation instructions are described fully below.
 The DIMM module is located on the controller board. The controller board is a
sensitive component and must be treated with care to avoid being damaged.
WARNING!
The controller board in the module contains sensitive components. Please ensure
that all anti-static precautions stipulated above are strictly adhered to. Only
qualified engineers can replace a DIMM module.
5.3.2 Selecting a Memory Module
If the memory module mounted on the controller is going to be replaced, the
following factors should be considered when purchasing replacement modules.
 Pre-installed DIMM module: The subsystem comes with a 256MB DDR RAM
module pre-installed on the controller board. If you wish to change the size of
the DIMM, then a new, separately purchased DIMM can be installed.
 DDR RAM DIMM modules supported. The subsystems support DDR RAM
DIMM modules with the capacities ranging from 256MB to 1GB.
 Installation consideration: When installing the DIMM module, it is necessary
to handle the controller module. The controller board is more susceptible to
damage than the other components and must therefore be handled with extreme
care. All anti-static precautions specified in Section 2.3 must be strictly adhered
to.
 Secure installation: When replacing the DIMM module, make sure that the new
DIMM module is firmly in place prior to installing the controller module. If the
DIMM module is not firmly in place, the subsystem will not run and the
controller will need to be removed and the DIMM module correctly installed.
 Purchasing consideration: When purchasing a DDR RAM DIMM to install on
the controller board, contact your vendor for an updated list of certified
modules.
Replacing or Upgrading Memory Modules 5-5