User`s manual

Chapter 1 Hardware Configuration 17
1.9 Installing DRAM (SIMMs and DIMMs)
You can install from 2 to 256 MB of any brand DRAM into your
PCA-6155V. The card provides two 72-pin SIMM (Single In-line
Memory Module) and two 168-pin DIMM (Dual In-line Memory
Module) sockets. Each socket accepts 1, 4, 8, 16, 32 or 64 MB SIMMs,
or 8 to 128 MB DIMMs. DIMMs can be used when the SIMM sockets
are not used. Two sockets are available for 3.3 volt (power level)
unbuffered synchronous DRAM (SDRAM) DIMMs or EDO DRAM
DIMMs.
1.9.1 Installing SIMMs
Note: The modules can only fit into a socket one way. Their
gold pins must point down into the SIMM socket.
The procedure for installing SIMMs appears below. Please follow
these steps carefully.
1. Ensure that all power supplies to the system are switched Off.
2. Install the SIMM card. Install the SIMM so that its gold pins point
down into the SIMM socket.
3. Slip the SIMM into the socket at a 45 degree angle and carefully fit
the bottom of the card against the connectors.
4. Gently push the SIMM into a perpendicular position until the clips
on the ends of the SIMM sockets snap into place.
5. Check to ensure that the SIMM is correctly seated and all connec-
tor contacts touch. The SIMM should not move around in its
socket.