6-16 'HOO2SWL3OH[*;0DQDJHG3&DQG2SWL3OH[1;1HW3&6\VWHPV6HUYLFH0DQXDO6\VWHP3RZHU6XSSO\)LJXUH6\VWHP3RZHU6XSSO\5HPRYDOTo remove the system power supply, follow these steps: 'LVFRQQHFWWKH$&SRZHUFDEOHIURPWKHEDFNRIWKHV\VWHPSRZHUVXSSO\ )UHHWKHV\VWHPSRZHUVXSSO\IURPWKHVHFXULQJWDEODEHOHG¥5(/($6(≥!μDQGURWDWHLWXSZDUGXQWLOLWORFNVPress the securing tab to release the power supply. 'LVFRQQHFWWKH'&SRZHUFDEOHVIURPWKHV\VWHPERDUGDQGWKHGULYHV )DFLQJWKHOHIWVLGHRIWKHFRPSXWHUPRYHWKHIURQWHQGRIWKHV\VWHPSRZHUVXSSO\WRZDUG\RXDQGOLIWLWXSWRGLVHQJDJHWKHSRZHUVXSSO\IURPWKHVORWLQWKHFKDVVLV /LIWWKHV\VWHPSRZHUVXSSO\IURPWKHFRPSXWHUWhen you reinstall the system power supply, place the power-supply detentlink over the pin on the power supply as you position the power supply in thechassis opening.DC power cablespower-supplydetent linkpower supplysecuring tabslot

Standard Features

Pentium II Microprocessor

External Visual Inspection

Observing the Boot Routine

Internal Visual Inspection

Eliminating Resource Conflicts

Device List

Diskette-Based Diagnostics

Hard-Disk–Based Diagnostics (OptiPlex NX1 Systems Only)

Running the System Diagnostics

Precautionary Measures

Inside the Computer

Optional Stand

Computer Cover

Eject, Power, and Reset Buttons

Front-Panel Inserts

Control Panel

Drives

Expansion-Card Cage

System Board

System Board Components

Video Memory

Microprocessor

System Battery

Front Bezel

Inch Diskette Drive Assembly

Inch Drive Assembly

Hard-Disk Drive Bracket

Hard-Disk Drive Assembly

System Power Supply

Expansion Cards

DIMMs

SEC Cartridge/Heat Sink Assembly

OptiPlex NX1 Computer

Secondary L2 Cache

SMART Technology

Telephony Application Programming Interface

Dell OptiPlex GX1 Service Manual

Hard-Disk Drive

Expansion Card

Riser Board

OptiPlex GX1

System Features

Video Controller

Hardware Features

Software Features

Wakeup On LAN

Security Cable Slot and Padlock Ring

Intel PIIX4 INF Update Installer for Windows 95

Getting Help

System Setup Screens

Using the System Setup Program

configuration options

Time

Reserved Memory

CPU Speed

DAC Snoop

Password Status

Setup Password

ENERGY STAR Compliance

Sound

Parallel Port

Speaker

Assigning a System Password

System Setup options

Entering the System Setup Program

ICU Database

Preparing to Use the ICU

Starting the ICU

Network Cable Requirements

Removing the Computer Cover

Jumpers

Rotating the Power Supply Away From the System Board

Drives: Primary and Secondary

Removing an Expansion Card

Removing and Replacing the Front Bezel

Partitioning and Formatting SCSI Hard-Disk Drives

Adding a Listed Card

Modifying a Card

Class A Device

Responding to Error Messages

System Data options

Windows NT 3.5x NIC

connecting peripheral devices

using the power switch

using the optional stand for vertical orientation

accessing online documentation

system setup screens

using the system setup program

using the system password feature

using the setup password feature

quick start

preparing to use the icu

starting the icu

adding a listed card

adding an unlisted card

modifying a card

removing a card

viewing resources

exiting from the icu

removing the computer cover

replacing the computer cover

inside your computer

expansion cards

adding memory

adding video memory

upgrading the microprocessor

replacing the system battery

connecting drives

installing scsi devices

key combinations

controls and indicators

security features

chassis intrusion

security cable slot and padlock ring

disabling a forgotten password

system setup navigation keys

system setup options

system information

removing dimms

before you start testing

starting the dell diagnostics

how to use the dell diagnostics

confirming the system configuration information

main menu categories

error messages

reserved memory

cpu speed

dac snoop

password status

auto power on

wakeup on lan

parallel mode

responding to error messages

removing and replacing the computer cover

troubleshooting a wet computer

troubleshooting expansion cards

troubleshooting system memory

troubleshooting the system board

troubleshooting the keyboard

troubleshooting a parallel printer

system board components

system board jumpers

system board labels

removing an expansion card

replacing the battery

checking connections and switches

system setup program

system beep codes

warning messages

input errors

memory address conflicts

problems with your order

returning items for warranty repair or credit

video memory test

text mode color test

text mode pages test

graphics mode test

color palettes test

OptiPlex GX110

OptiPlex NX1