Upgrading the VAX 4000 Model 100A System
3.5 Installing the CPU Module
6. Disconnect the internal DSSI connectors from all drives mounted on the
shelves. Figure 3–5 shows one drive as an example.
Figure 3–5 Disconnecting Internal DSSI Connectors
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Internal DSSI connectors
7. Remove all SIMMs from the CPU module. (See Figure 3–6).
Caution
Static electricity can damage integrated circuits. Wear a wrist strap
and place an antistatic mat under the system unit when working with
the internal parts of the system unit.
Note
Note carefully the position of each memory module you remove; they
must be reinstalled later into the same slots.
Beginning with the SIMMs closest to the front of the enclosure remove
each as follows:
1. Release the memory module by pressing the metal board clips on the
memory module connector away from the center.
2. Tip the memory module rearward.
Upgrading the VAX 4000 Model 100A System 3–9