IBM PCI Cryptographic Coprocessor, Installation And Using Manual

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Chapter 5. Replacing Coprocessor Batteries
This chapter describes how to replace the batteries on the PCI Cryptographic
Coprocessor. Before beginning the procedure, read the following descriptive and
cautionary materials.
Four lithium batteries, wired in parallel, are mounted on the coprocessor to supply
power to the components, including protected memory. Your support software or
application software can query the coprocessor to determine whether the batteries need
to be replaced.
When the coprocessor is shipped from the factory, the protected memory contains a
certified device key . If your coprocessor has been initialized by support software, the
protected memory contains secret data, including cryptographic keys, user access
controls, and so forth.
Attention: If you remove any of the batteries without first backing up the power with a
fresh battery, the data in protected memory can be lost.
The Replacement Battery Kit for the coprocessor provides two batteries and a battery
tray needed to provide backup power while you replace the batteries. You need two
battery kits to replace all four of the batteries. To order the kits, contact your sales
representative.
Each Replacement Battery Kit (two kits are needed) includes:
v
Two replacement batteries
v
A battery tray with connecting wires
Replacing the Batteries
Before beginning the battery replacement procedure, read “Safety Information” on
page v and “Handling Static-Sensitive Devices” on page vi.
To replace the batteries, do the following:
1. Turn off the computer and all attached devices.
2. Disconnect all cables, including the power cable.
3. Remove the cover from the expansion slots according to the directions provided
with your computer.
4. Open the Replacement Battery Kits.
5. Remove the coprocessor from the PCI bus slot in the host computer.
6. Insert one of the new batteries into a battery tray provided with the kit. Align the
″
+
″
terminal on the battery with the
″
+
″
symbol on the battery tray (the end with
the red wire). Connect the tray’s wires to the connector J3 located near the
RS-232 serial port connector, as shown in the following diagram. The connector is
polarized to ensure a proper connection.
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