146 SPARCstation 20 Service Manual • July 1996
Installing a Single-Wide MBus Module
Caution – Use proper ESD grounding techniques when handling components. Wear
an antistatic wrist strap and use an ESD-protected mat. Store ESD-sensitive
components in antistatic bags before placing it on any surface.
1. Push the MBus module retainers to the unlocked position.
2. Position the MBus module so that the MBus module connector faces the
appropriate slot (
FIGURE 11-4).
FIGURE 11-4 Installing a Single-Wide MBus Module
Caution – A module must be installed in MBus module slot 0 (lower slot) or the
system will not work.
3. Insert the back edge of the module between the metal (lower) and plastic (upper)
tabs on the back panel.
4. Hold the MBus module corners and press down firmly until the module is seated
into the slot.
MBus module
Back panel MBus slot 0