This chapter tells you how to install and remove single in-line memory modules (SIMMs). You may need to remove and replace SIMMs if you are upgrading the memory in your system. Also, if diagnostic tests report failures, or if you get memory parity errors (see Chapter 7, “Troubleshooting”), you may need to remove and replace SIMMs.
Many customers order additional memory for their systems. You may have received extra SIMMs with your Indigo2 shipment or later in a separate package.
Carefully follow all steps in the following sections to shut down your system, remove the cover, install the SIMMs, replace the cover, and test to make sure the SIMMs are installed and working properly.
To shut down and power off the system, follow these steps:
Open the front cover.
Press and release the power switch on the front of the system to shut down the software and power off the system.
The system powers off automatically.
Press the monitor power switch to turn off your monitor.
Disconnect the power cable from back of the Indigo2.
Once the system is shut down and the power cable is disconnected, follow these steps:
Remove the front bezel.
Press down on the tabs on each side of the bezel, as shown in Figure 3-1.
Pull the bezel down and away from the chassis.
Remove the top cover, as shown in Figure 3-2.
Press up on the tabs on each side of the drive openings.
Pull up on the cover and rotate it back and away from the chassis.
To install SIMMs, follow these steps:
Ground yourself to a metal part of the chassis.
Put the wrist strap over your wrist, making sure it's tight against your arm.
Attach its alligator clip to a metal part of the chassis.
Caution: The system's internal components are sensitive to static electricity. Handle the parts carefully, and wear the wrist strap to avoid the flow of static electricity. Face the back of the chassis and locate the SIMM sockets.
The sockets are located in the center of the system, toward the back, as shown in Figure 3-3. There are twelve sockets, split into three banks—A, B, and C. Bank C are the four sockets farthest away from you. Bank B are the next four sockets. Bank A are the four sockets closest to you.
Install SIMMs consecutively, in groups of four, beginning with the open slot farthest away from you (from C to A).
Disconnect the SCSI cable from the back of the 5-1/4" drive tray. This allows better access to the SIMM slots.
Install the first SIMM.
Note: If you are installing SIMMs in bank C, you will must remove the 5-1/4" drive tray first, before installing the SIMMs. Turn to “Removing the 5-1/4" Drive Tray” for instructions. Facing the rear of the system and using both hands, grasp the top of the SIMM so the notch in the bottom corner of the SIMM is on your left, as shown in Figure 3-4.
Tip the top of the SIMM toward you, as shown in Figure 3-5, and press the SIMM securely into the socket at a 45-degree angle to the board.
Tilt the SIMM up into a vertical position.
The SIMM is positioned correctly when the latches on both sides of the SIMM socket are hugging the edges of the SIMM.
Install the other SIMMs.
Visually check the tops of the SIMMs to make sure they are installed all the way.
If a SIMM is not sitting vertically, push it farther upward.
Reconnect the SCSI cable on the back of the 5-1/4" drive tray.
You are ready to replace the cover.
It is important to replace the cover before testing the SIMMs. This ensures proper airflow through the system while the system is running the test.
To replace the cover, follow these steps:
Replace the top cover.
Facing the front of the system, place the prongs on the underside of the cover into the slots under the top ridge of the backplane of the chassis, as shown in Figure 3-6.
Lower the cover down onto the chassis until it snaps into place.
Replace the front bezel.
Place the tabs on the bottom of the bezel in the grooves in the front of the chassis, as shown in Figure 3-7.
Tilt the bezel up until it snaps into place.
Reconnect the power cable to the connector on the back of the system.
You are now ready to power up the system and check the new memory.
Now make sure the system recognizes the new memory. To check the amount of memory on your system, follow these steps:
If your Indigo2 is new, make sure you've already installed the system disk before turning on the system.
Press the power switch to turn on the power.
After the power-on diagnostics run, you'll see a notifier, as shown in Figure 3-8.
After a few seconds, you see the notifier shown in Figure 3-9.
The system boots up and brings up the login screen.
If no picture appears on your screen and the yellow fault light blinks, one or more SIMMs are not installed correctly. Turn off the system, remove the cover, and check that the SIMMs are installed correctly. Then try this procedure again. If it still fails, see Chapter 7, “Troubleshooting.”
Log in to your account. For more information on logging in, refer to “Logging In to the Workstation”.
When you log in, the default desk appears. In the upper left-hand corner of the screen are the toolchests.
Choose “System Manager” from the System toolchest.
You see a window showing Hardware and Shared Resources.
Look under the Hardware listing for the line showing memory. The amount of memory shown in megabytes should equal the amount of memory that came with the Indigo2 plus the amount of memory you installed.
For example, if you had 32 MB of memory on the Indigo2 when you started and you installed another 32 MB, you should have a total of 64 MB.
| Note: If the amount of memory you just installed is not added to the original amount, the SIMMs are not installed correctly. Make sure that all of the SIMMs are all the way in. Return to “Installing Memory” to check the SIMMs. Then try this procedure again. |
Now you are ready to use the Indigo2 workstation.
You may need to remove SIMMs if one fails or if you want to upgrade the memory in your system.
| Caution: SIMMs and the system's internal components are sensitive to static electricity. Handle the SIMMs carefully, and wear the wrist strap to avoid the flow of static electricity. |
To remove memory SIMMs, you must shut down the system, remove the cover, remove the 5-1/4" drive tray (if necessary), and remove the SIMMs. Then, replace the 5-1/4" drive tray (if you removed it) and the cover. You'll need a phillips screwdriver to remove the 5-1/4" drive tray.
To shut down the system, follow these steps:
Open the front cover.
Press and release the power switch on the front of the system to shut down the software and power off the system.
The system powers off automatically.
Disconnect the power cable from back of the Indigo2.
Once the system is shut down and the power cable is disconnected, follow these steps:
Remove the front bezel.
Press down on the tabs on each side of the bezel, as shown in Figure 3-10.
Pull the bezel down and away from the chassis.
Remove the top cover.
Press up on the tabs on each side of the drive openings.
Pull up on the cover and rotate it back and away from the chassis, as shown in Figure 3-11.
The SIMMs are located in the center of the system, toward the back, as shown in Figure 3-12.
The first few SIMMs are located beneath the 5-1/4" drive tray. If you need to remove these SIMMs, you must first remove the drive tray. See “Removing the 5-1/4" Drive Tray” for instructions.
If the SIMMs you are removing are not covered by the 5-1/4" drive tray, you do not need to remove the tray. Turn to “Removing the Memory SIMMs” for instructions on how to remove the SIMMs.
To remove the 5-1/4" drive tray, follow these steps:
Ground yourself to the system.
Attach the alligator clip of the wrist strap to a metal part of the chassis. Make sure the wrist strap is tight around your arm.
Caution: The system's internal components are sensitive to static electricity. Handle the parts carefully, and wear the wrist strap to avoid the flow of static electricity.
Disconnect the SCSI cable from the connector on the back of the 5-1/4" drive tray, as shown in Figure 3-13.
Use a phillips screwdriver to loosen the two screws holding the 5-1/4" drive tray to the chassis.
Note: If there is a drive installed, there is no need to remove the drive from the tray.
Push the drive tray assembly backward, and pull up to remove it, as shown in Figure 3-14.
To remove the memory SIMMs, follow these steps:
Make sure your wrist strap is attached to a metal part of the system and the elastic is secure around your arm.
Remove the SIMMs.
Face the back of the system.
Locate the memory SIMMs you want to remove.
Note: In order to replace a faulty SIMM, you need to remove the SIMM closest to you first, then remove the following SIMMs until you reach the SIMM you want to replace. Use the SIMM removal tool that came with your SIMMs. Place the flat side of the tool against the side of the SIMM (as shown in Figure 3-15) and press down on the latches on each side of the SIMM.
The SIMM releases and tips toward you about 45 degrees.
Pull the SIMM out of the socket.
Remove the other SIMMs.
To replace the SIMMs, turn to “Installing the SIMMs”.
If you removed the drive tray, follow these steps to replace it:
Make sure your wrist strap is attached to a metal part of the system and the elastic is secure around your arm.
Replace the 5-1/4" drive tray assembly.
Position the drive and tray so the tabs on the sides of the tray fit inside the slot openings in the chassis, and the open side of the tray faces the front of the system. (See Figure 3-16.)
Push the tray forward about a 1/2" to lock it in place.
Tighten the two captive screws.
Reattach the SCSI cable to the connector on the back of the drive tray.
To replace the cover, follow these steps:
Place the prongs on the underside of the cover into the slots under the top ridge of the backplane of the chassis, as shown in Figure 3-17.
Lower the cover onto the chassis until it snaps into place.
Replace the front bezel.
Place the tabs on the bottom of the bezel in the grooves in the front of the chassis, as shown in Figure 3-18.
Tilt the bezel up until it snaps into place.
Reconnect the power cable to the connector on the back of the Indigo2 chassis.
You are finished removing the SIMMs and are ready to power up the system.