1 SPARCstation 2 Memory Boards



Product Description

SPARCstation 2 memory boards consist of two printed circuit boards, each of which extends a SPARCstation 2's DRAM capacity by 32 megabytes. Of the two boards, there is a primary board that plugs into SBus slot 1 on the SPARCstation 2's main-logic board, and a secondary board that plugs into the primary board in a two-board-set configuration.

A SPARCstation 2's DRAM capacity can be expanded to 96 megabytes using one memory board (64 megabytes in SIMMs plus 32 megabytes in a primary memory board). A SPARCstation 2's DRAM capacity can be expanded to 128 megabytes using two memory boards (64 megabytes in SIMMs, 32 megabytes in the primary memory board, and 32 megabytes in the secondary memory board).

The SPARCstation 2 memory boards occupy one SBus slot physically, but they are not SBus devices because they receive their DRAM control signals from the main-logic board on a path different from that of the SBus.

Features

The SPARCstation memory boards feature:

EMI Compliance

The SPARCstation 2 memory boards have been tested for electromagnetic interference (EMI) compliance (U.S.A. FCC, Canada DOC, Japan VCCI, Germany VDE). When installed and operated in accordance with this document, the EMI class marked on the SPARCstation 2's label will remain the same.

Unpacking a Memory Board

Unpack a memory board from its packing box. You should have the following:

After removing these items from the packing box, be sure to store the box and its packing material for future use.

Identifying the UNIX Version of Your Operating System

Determine which version of the operating system you are running. For example, for either Solaris 1.x (SunOS 4.x) or Solaris 2.x (SunOS 5.x) enter:


uname -rs

Shutting Down the System

Note - The system might not recognize the new device unless you follow the shut down procedures in the handbook for SMCC peripherals.

Before installing a board, you must halt the operating system and turn off the system power.

    1. Go to the appropriate handbook for your operating system (the Handbook for SMCC Peripherals that came with the memory board).
    2. See the section about shutting down the system, and return to this book after you perform the procedure.

Caution - When the operating system or any other stand-alone program has already booted, do not use the L1-A or Stop-A keys to halt your system. Abruptly aborting program execution can damage your files.

    3. Turn off the power to your system components in this sequence:
      a. Monitor
      b. External drive unit (if you have one)
      c. System unit

Caution - Do not disconnect the power cord from the power outlet on your system or from the wall outlet. This connection provides the ground path necessary to remove and install the printed circuit board and components without damaging them with static electricity.

Removing the System Cover

Remove the system cover. See Appendix A, "Removing the System Cover."

Attaching the Wrist Strap

You must attach the anti-static wrist strap to both yourself and the system to prevent damage to your system. The wrist strap provides a ground between your body and the chassis of your system for static electricity. Electric current and voltage do not pass through the wrist strap. Sun provides wrist straps with all add-on printed circuit boards which might otherwise be damaged by static electricity.

Caution - If you do not wear a wrist strap, the board and its components can be damaged by electrical charges.

To attach the wrist strap to your wrist and the system:

    1. Wrap the wrist strap twice around your wrist with the conductive adhesive tape.

    The adhesive side must be against your skin.

    2. Attach the adhesive copper strip to the metal casing of the power supply inside your system.

What's Next

You have finished the first steps in preparation for installing your SPARCstation 2 memory board(s). Now you should read the following chapter(s):