Performing A Memory Upgrade; Installing Dimms - Dell PowerEdge 4200 Installation And Troubleshooting Manual

Performing a Memory Upgrade

Use the following procedure to perform a memory
upgrade to the system board:
1. Remove the left computer cover.
See "Removing the Computer Covers" in Chapter 7.
CAUTION: See "Protecting Against Electro-
static Discharge" in the safety instructions at
the front of this guide.
2. Locate the DIMM sockets in which you will
install or replace DIMMs.
Figure 8-1 shows the location of the DIMM sockets
on the system board.
3. Install or replace the DIMMs as necessary to
reach the desired memory total.
Follow the instructions in "Installing DIMMs" or
"Removing DIMMs" found later in this section, as
appropriate.
4. Replace the left computer cover, and then recon-
nect the computer and peripherals to their power
sources and turn them on.
After the system completes the power-on self-test
(POST) routine, it runs a memory test that displays
the new memory total, which includes all newly
installed memory.
NOTE: If the memory total is incorrect, turn off and
disconnect the computer and peripherals from their
power sources, remove the computer cover, and
check all the installed DIMMs to make sure they are
seated properly in their sockets. Then repeat step 4.
The system detects that the new memory does not
match the system configuration information, which
is stored in nonvolatile random-access memory
(NVRAM). The monitor displays an error message
to that effect that ends with the following words:
Press <F1> to continue; <F2> to enter
System Setup, <F10> to enter Utility
Mode.
5. Press <F2> to enter the System Setup program, and
check the Base Memory and Extended Memory
8-6 Dell PowerEdge 4200 Systems Installation and Troubleshooting Guide
categories in the system data box on the System Setup
screens.
The system should have already changed the value in
the Extended Memory category to reflect the newly
installed memory. Verify the new total by adding the
Base Memory and Extended Memory values.
NOTE: The value of Base Memory is given in kilo-
bytes. To convert kilobytes to megabytes, divide the
kilobyte total by 1024.
If the total is incorrect, one or more of the DIMMs
may not be installed properly. Repeat this procedure
again, checking to make sure the DIMMs are firmly
seated in their sockets.
6. Enter the EISA Configuration Utility. Then save
the configuration and exit the utility.
Running the EISA Configuration Utility and saving
the configuration is required for the system to recog-
nize the newly installed DIMM(s). See Chapter 5,
"Using the EISA Configuration Utility," in the User's
Guide for instructions on running the utility and sav-
ing the configuration.
7. Run the RAM Test Group in the system
diagnostics.
See Chapter 5, "Running the System Diagnostics,"
for information.

Installing DIMMs

Install DIMMs starting with socket DIMM_A, located
farthest from the microprocessor sockets, and working
towards DIMM_H. If a DIMM is already installed in the
socket you need, you must remove it. Follow the instruc-
tions in the next subsection, "Removing DIMMs," if
appropriate.
To install a DIMM, follow these steps:
1. Press the ejectors on the DIMM socket down and
outward as shown in Figure 8-4 to allow the
DIMM to be inserted in the socket.
2. Align the DIMM's edge connector with the slot in
the center of the DIMM socket, and insert the
DIMM in the socket.
The card-edge connector on the DIMM is keyed
using two notches so that the DIMM can be installed
in the socket in only one way (see Figure 8-4).