Chapter 8 Hardware Configuration And Expansion; The 100U Card Cage - Sun Microsystems Sun Workstation 100U System Manager's Manual

Chapter 8
Hardware Configuration and Expansion
This chapter describes the seven-slot Multibus card cage in the Model 100U and the fifteen-slot
Multibus card cage in the 150U, and gives brief configuration details of the boards which may
be supplied with them. For specific details of the configuration and descriptions of the boards
and their jumpers, see the board-level manuals for individual boards.
In general, the Sun Workstation is shipped with all its boards (tape and disk controllers and
such) already installed. However, if you are upgrading a Sun to include more peripherals, you
can use this section to discover how to install the boards and how to set the switches (or them.
This chapter can also be used during troubleshooting, if you need to poke inside the card cage
and identify the boards.
8.1. The lOOU Card Cage
The card cage holding the Model 100U circuit boards lives in the black cabinet below the moni-
tor housing.
Turn off the power and disconnect the power cord be/ore opening up the Sun
Workstation's enclosure.
To get to the Model 100U card cage, first unscrew the six screws on the sides of the black
cabinet.
Stand at the back of the Sun Workstation where all the cable connectors are. Gently slide out
the enclosure. There are many cables and wires connecting the enclosure to various parts of the
workstation. You must pull the enclosure out gently to avoid breaking anything. Eventually,
you won't be able to pull it any further because the wires are stretched as far as they can go.
As you look at the enclosure from the back of the workstation, the power supply is in the metal
case on the lelt of the enclosure, and the Multibus card cage is on the right of the enclosure.
The top of the card cage itself is uppermost, and the top of the boards is to the right.
The following diagrams show a few typical configurations for the desktop workstation. In the
diagrams, the notation 'P2' indicates slots spanned by the P2 bus connector. Cards are shown
in the slots where they are installed at the factory. Detailed explanations of the reasons for
placing certain cards in specific slots follow this section.
Revision H of 12 March 1984
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