1-12 Computer Group Literature Center Web Site
Installation Procedures
1
disconnect the AC or DC power source before connecting an external
battery except where necessary to prevent data loss.
2. Connect the external battery to utility connector J16 using an
appropriate user-supplied connector. (See Utility Connector J16 on
page 6-21 for pinout information.)
3. Place a jumper across J1 pins 2 and 3 to enable external battery
backup.
Note Removing the jumper from J1 pins 1 and 2 disconnects the
on-board battery. For more information, see On-board
Backup Battery on page 5-11.
Adding DRAM
The MBX board accommodates 8MB, 16MB, 32MB, 64MB, or 128MB of
expansion DRAM in a 168-pin DIMM socket, XU3. Expansion DRAM
must have the same characteristics as the on-board DRAM, namely:
❏ Single bank
❏ 60ns or faster
❏ 3.3V
❏ Unbuffered
❏ EDO (extended data out)
❏ Up to 4K refresh
To add DRAM, refer to Figure on page 6-2 for the location of connectors
and jumper headers and follow the steps below.
No special tools are required for this procedure.
War ni ng
To prevent serious injury or death from dangerous voltages, use extreme
caution when handling, testing, and adjusting this equipment and its
components.
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