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Rimms – Dell Precision 420 User Manual

Page 44

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RIMMs

To remove a Rambus in-line memory module (RIMM), perform the following steps.

1. Remove the computer cover according to the instructions in "

Computer Cover

."

2. Press the securing clips outward simultaneously until the RIMM disengages and pops out slightly from the socket (see

Figure 30

).

Figure 30. RIMM Removal

To install a RIMM, perform the following steps.

1. Remove the computer cover according to the instructions in "

Computer Cover

."

FAN_SYS

Microprocessor fan connector

HD_LED

Hard-disk drive LED connector

IDEn

EIDE interface connector

KYB

Keyboard connector

LINE_IN

External microphone connector

LINE_OUT

External speaker connector

MOUSE

Mouse connector

PANEL

Control panel connector

PARALLEL

Parallel port connector

PCIn

PCI expansion-card connector

POWER_1

Main power input connector

POWER_2

3.3-V power input connector

RIMMx_y

RIMM socket

SERIAL 1/2

Serial port connectors

SLOT1_PRI

Primary microprocessor connector

SLOT1_SEC

Secondary microprocessor connector

STANDBY

Standby power LED

STR_LED

Suspend-to-RAM LED

USB

USB connectors

TAPI

Telephony connector

WOL

Remote Wakeup on LAN power connector

CAUTION: Before you remove the computer cover, see "

Precautionary Measures

."

CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals, disconnect them from their
electrical outlets, and then wait at least 5 seconds before you remove the computer cover.

CAUTION: The RIMMs can get extremely hot during system operation. To avoid dangerous burns, be sure that the RIMMs
have had sufficient time to cool before you touch them.

NOTE: Before disconnecting a peripheral from the system or removing a component from the system board, verify that the standby
power LED on the system board has turned off. For the location of this LED, see

Figure 28

.

1 Securing clips (2)

CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals, disconnect them from their
electrical outlets, and then wait at least 5 seconds before you remove the computer cover. Also, before you upgrade memory,
see the other precautions in "

Precautionary Measures

. "