Dell OptiPlex GX1 Dell OptiPlex GX1/GX1p Managed PC and OptiPlex NX1 Net PC S - Page 18

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The ATI multimedia channel (AMC) implements a local graphics bus that allows

external devices to attach directly to the graphics controller. The AMC allows

devices to transfer video stream data to the graphics controller, for example,

MPEG-2 decoding for digital video disk (DVD) applications, or to receive video

stream data from the graphics controller to the device, for example, TV-Out

circuitry, or to do both simultaneously.

Most of the video stream data trans-

fers occur on the AMC without congesting the PCI bus bandwidth.

The 40-pin AMC connector, shown in Figure 1-12, consists of three ports into

the graphics controller: a digital video stream (DVS) port for video input into the

graphics controller, a multimedia peripheral port (MPP) for video input and out-

put from the graphic controller, and an inter-integrated circuit (I

2

C)-compatible

serial control port for controlling the attached devices. A fourth port, audio

mixing bus (AMB), is not supported by the system. To route mixed audio from

an AMC-compliant adapter card to the system board, CD-ROM audio cables

must be attached from the adapter card’s CD-ROM audio input and CD-ROM

audio output connections to the AMC connector. See the AMC-compliant

adapter card’s documentation for more information.

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The OptiPlex GX1/GX1p and OptiPlex NX1 systems include a telephony appli-

cation programming interface (TAPI) that allows the system board audio to

interface with a modem to facilitate speakerphone functionality. The TAPI-

compliant telephony input is a mono source with a maximum signal level of

2 Vrms.

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Chassis Intrusion

displays the status of the system chassis intrusion monitor.

The settings for this option are

Enabled

,

Enabled-Silent

, or

Disabled

. The

default is

Enabled

.

If the computer cover is removed while the intrusion monitor is set to

Enabled

, the setting changes to

Detected

, and the following message

appears during the boot sequence at the next system start-up:

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If the computer cover is removed while the intrusion monitor is set to

Enabled-Silent

, the setting changes to

Detected

, but the alert message is not

displayed during the boot sequence at the next system start-up.

If the intrusion monitor is set to

Disabled

, no intrusion monitoring occurs and

no messages are displayed.

To reset the

Detected

setting, enter the System Setup program during the

system’s POST. Highlight the

Chassis Intrusion

option and press the left- or

right-arrow key to choose

Enabled

,

Enabled-Silent

, or

Disabled

.

NOTE: If a setup password has been assigned by someone else, contact your

network administrator for information on resetting the chassis intrusion detector.

Section	Page
Contents	3
System Overview	13
Chassis Differences	14
Chassis Similarities	15
Standard Features	15
Pentium II Microprocessor	15
Secondary L2 Cache	15
Main Memory	16
Upgradable BIOS in Flash Memory	16
EIDE Subsystem	16
SMART Technology	16
Integrated Diskette/Tape Drive Controller	17
Integrated SVGA Subsystem	17
Integrated Audio Controller	17
ATI Multimedia Channel	18
Telephony Application Programming Interface	18
Chassis Intrusion Detection	18
Integrated Ethernet NIC Support (Optional)	19
Network Cable Requirements	19
Full Set of I/O Ports	19
Power Supply	20
Location of Major Components	20
Advanced Expansion Features	25
OptiPlex NX1 Computer’s Expansion-Card Slot	26
Low-Profile Computer’s Expansion-Card Slots	26
Midsize Computer’s Expansion-Card Slots	26
Mini Tower Computer’s Expansion-Card Slots	28
Upgrade Options	28
Microprocessor/L2 Cache Upgrades	28
Main Memory Expansion	29
Video-Memory Upgrade Option	29
Computer Service Information	29
Online Documentation	29
System Diagnostics	30
System-Board Service Data	30
System Board	30
System Board Jumpers	32
Interrupt Assignments	33
DMA Channel Assignments	34
Hard-Disk Drive Service Information	34
Hard-Disk Drive for the Low-Profile Computer	35
Hard-Disk Drive for the Midsize Computer	35
Hard-Disk Drive for the Mini Tower Computer	36
Hard-Disk Drive for the OptiPlex NX1 Computer	36
Power-Supply Service Data	36
Pin Assignments for the DC Power Connectors	37
DC Power Distribution	38
System Power Supply for the OptiPlex NX1 Computer	43
OptiPlex NX1 Pin Assignments for the DC Power Connectors	44
DC Power Distribution for the OptiPlex NX1 Computer	45
Technical Specifications	47
Basic Troubleshooting	55
Initial User Contact	55
External Visual Inspection	56
Observing the Boot Routine	57
Internal Visual Inspection	58
Eliminating Resource Conflicts	59
Running the System Diagnostics	59
Server-Based Diagnostics	60
Hard-Disk–Based Diagnostics (OptiPlex NX1 Systems Only)	61
Diskette-Based Diagnostics	62
Connecting an External Diskette Drive to the OptiPlex NX1 Computer	63
Running the Diskette-Based Diagnostics	64
Getting Help	64
Beep Codes and Error Messages	65
POST Beep Codes	65
System Error Messages	67
Removing and Replacing Parts on the Low-Profile Chassis	73
Recommended Tools	73
Precautionary Measures	73
Inside the Computer	74
Computer Cover	76
Eject, Power, and Reset Buttons	77
Front-Panel Inserts	78
Control Panel	79
Drives	80
Externally Accessible Drive Assemblies	80
3.5-Inch Diskette Drive Assembly	81
5.25-Inch Drive Assembly	82
Hard-Disk Drive Assembly	83
System Power Supply	84
Expansion Cards	85
Expansion-Card Cage	85
Expansion Card	86
Riser Board	87
System Board	88
System Board Components	89
DIMMs	89
Video Memory	90
Microprocessor	91
SEC Cartridge/Heat Sink Assembly	91
System Battery	92
Removing and Replacing Parts on the Midsize Chassis	95
Recommended Tools	95
Precautionary Measures	95
Inside the Computer	96
Optional Stand	98
Computer Cover	99
Eject, Power, and Reset Buttons	100
Front-Panel Inserts	101
Control Panel	102
Drives	103
Externally Accessible Drive Assemblies	103
3.5-Inch Diskette Drive Assembly	104
5.25-Inch Drive Assembly	105
Hard-Disk Drive Bracket	106
Hard-Disk Drive	107
System Power Supply	108
Expansion Cards	109
Expansion-Card Cage	109
Expansion Card	110
Riser Board	111
System Board	112
System Board Components	113
DIMMs	113
Video Memory	114
Microprocessor	115
SEC Cartridge/Heat Sink Assembly	115
System Battery	116
Removing and Replacing Parts on the Mini Tower Chassis	119
Recommended Tools	119
Precautionary Measures	119
Inside the Computer	120
Computer Cover	122
Front Bezel	123
Eject, Power, and Reset Buttons	124
Front-Panel Inserts	125
Control Panel	127
Drives	128
Externally Accessible Drive Assemblies	128
3.5-Inch Diskette Drive Assembly	129
5.25-Inch Drive Assembly	130
Hard-Disk Drive Bracket	132
Hard-Disk Drive	133
System Power Supply	134
Expansion Cards	135
Expansion-Card Cage	135
Expansion Card	136
Riser Board	137
System Board	138
System Board Components	139
DIMMs	139
Video Memory	140
Microprocessor	141
SEC Cartridge/Heat Sink Assembly	141
System Battery	142
Removing and Replacing Parts on the OptiPlex NX1 Net PC Chassis	145
Recommended Tools	145
Precautionary Measures	146
Inside the Computer	146
Optional Stand	147
Computer Cover	148
Control Panel	150
Hard-Disk Drive	151
System Power Supply	152
Expansion-Card Cage	153
Expansion Card	154
Riser Board	155
System Board	156
System Board Components	157
DIMMs	157
Video Memory	158
Microprocessor	159
SEC Cartridge/Heat Sink Assembly	159
System Battery	160
System Setup Program	163
System Setup Screens	164
Device List	168

Dell OptiPlex GX1 Dell OptiPlex GX1/GX1p Managed PC and OptiPlex NX1 Net PC S - Page 18

Chassis Intrusion, Enabled, Enabled-Silent, Disabled, Detected - disable integrated video

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