Advantech MIC-3351, Startup Manual

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Chapter 1 Hardware Configuration 1 5
1.9 Installing SDRAM (SODIMMs)
The MIC-3351 provides two 144-pin SODIMM sockets, one on the
component side of the upper board and the other one on the solder
side of the upper board. Each socket accepts 16, 32, 64, or 128 MB
SDRAM. The sockets can be filled in any combination with DIMMs
of any size, giving a total memory capacity between 16 and 256 MB. If
only one SODIMM module is required, it can be installed in either
SODIMM socket.
The procedure for installing SODIMMs appears below. Please follow
these steps carefully.
1. Ensure that all power supplies to the system are switched Off.
2. Install the SODIMM module. Install the SODIMM so that its gold
pins point down into the SODIMM socket.
3. Slip the SODIMM into the socket at a 45 degree angle and carefully
fit the bottom of the module against the connectors.
4. Gently push the SODIMM toward the board until the SODIMM is
parallel to the CPU card, and the clips on the ends of the SODIMM
sockets snap into place.
5. Check to ensure that the SODIMM is correctly seated and all
connector contacts touch. The SODIMM should not move around
in its socket.
NOTE: 1. The SODIMM modules can only fit into sockets
one way, in accordance with the keyed notches
along the bottom edge of the modules. Their gold
pins must point down into the SODIMM socket.
2. To install the SDRAM module in the socket on the
solder side, users need to disassemble the MIC-
3351. Please refer to Figure 2-1 for details.