Nvsimm; Removing A Simm; Figure 11-23 Vsimm, Back View; Figure 11-24 Nvsimm, Battery Side - Sun Microsystems SPARCstation 20 Service Manual

VSIMM, Back View
FIGURE 11-23

NVSIMM

Each NVSIMM contains 2 Mbytes of memory, a battery, and power controller
circuitry to ensure memory is not lost when the system is shut down or halts
because of abnormal conditions. The NVSIMM is a card with a round, non-
replaceable battery mounted on one side. The NVSIMM plugs into a memory slot
located on the system board.
Battery
Jumper
Key notches
NVSIMM, Battery Side
FIGURE 11-24

Removing a SIMM

Refer to and proceed as follows:
FIGURE 11-25
Caution – The installed SIMMs are specifically designed to operate in the
SPARCstation 20 system. Do not remove DSIMMs, VSIMMs, or NVSIMMs from
different Sun systems and install them in a SPARCstation 20 system.
shows the battery side of the NVSIMM.
FIGURE 11-25
Chapter 11 System Board and Component Replacement 161