AT&T 2.1.1 manual Hardware Installation

Hardware Installation

Follow these steps to install additional memory on the memory expansion board:

1.Determine the type of SIMM strips you have from the part number printed on the modules:

—256 kB SIMMs contain the number 256 in the part number.

—1 MB SIMMs contain the number 1000 or 1024 in the part number.

N O T E :

If part numbers are missing or unreadable, you can identify the type of SIMM by examining the chips. The 256 kB chips have leads on all four sides. The 1 MB chips have leads on only two sides.

You may use only one type of SIMM on each memory board.

2.To install one kit of four SIMMs, insert the four SIMMs only in the sockets marked 1 in Figure 2-11.To install three kits of four SIMMs, insert SIMMs in all open sockets.

3.Referring to Figure 2-13,slide each module carefully into the socket with the circuit packs facing up. When the module is seated, press down gently until it snaps into place. Compare it with other modules already in place to ensure that it has been inserted correctly.

CAUTION:

Use extreme care when installing or removing SIMMs. The plastic retaining clips on the sockets are easily broken by using too much force.

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