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TA64 Hardware Manual
1-12
Themis Computer
1.5
TOD/NVRAM Battery Replacement
The TA64 has its own lithium battery to operate the TOD clock and maintain the
contents of the NVRAM during a power shutdown. Located directly on the top sur-
face of the PCB, the battery provides power backup for approximately 10 years.
In the event the battery must be replaced, follow these steps:
1.
Remove the 6 screws holding the Memory Module to the top (component)
side of the TA64 and remove the Memory Module (see
Figure 1-5
).
2.
Locate the lithium battery on the surface of the TA64.
Figure 1-5.
Location of the TOD/NVRAM Battery
4-pin, unkeyed
Lithium Battery
TOD/NVRAM
Remove the 6 screws securing the Memory Module
and locate the lithium battery.
Memory Module.
Содержание TA64
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