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Dell OptiPlex GX110 Service Manual - Page 41

tion. Therefore, when you measure these voltages, the DC power input

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keyboard controller P1 PWRGOOD system board +3 VDC battery power management RTC/ and NIC logic NVRAM POWER1 system power supply PSON# +5 VFP +5 VDC -5 VDC +12 VDC -12 VDC P7 +3.3 VDC PSON# +5 VFP +5 VDC -5 VDC +12 VDC -12 VDC POWER2 +5 VDC -5 VDC +12 VDC -12 VDC RISER riser board +3.3 VDC +5 VDC +12 VDC -12 VDC +5 VFP +5 VDC -5 VDC +12 VDC -12 VDC PCI1 through PCI5 P1 ISA1 through ISA4 internal P2 hard-disk drive internal P3 hard-disk drive P4 3.5-inch diskette drive P5 optional drive P6 optional drive P9 optional drive +12 VDC FAN main memory DIMM_A DIMM_B DIMM_C +5 VFP +5 VDC +5 VDC +5 VDC PANEL USB KYBD +5 VDC processor MICROPROCESSOR core regulator +3.3 VDC core VCC +2.1 to +3.5 VDC MOUSE NOTE: +5 VFP is routed to the integrated NIC logic on the system board and to P1 on the riser board. The OptiPlex NX1 computers have an 80-W computer power supply. The power supply can operate from an AC power source of 115 VAC at 60 Hz or 230 VAC at 50 Hz. The system power supply provides the DC operating voltages and currents listed in Table 1-5. NOTE: The power supply produces DC voltages only under its loaded condition. Therefore, when you measure these voltages, the DC power input connectors must be connected to their corresponding power input connectors on the system board and hard-disk drive. System Overview 1-29

Section	Page
Dell OptiPlex GX1 and NX1 Service Manual	1
Contents	3
System Overview	13
Chassis Differences	14
Chassis Similarities	15
Standard Features	15
Pentium II Microprocessor	15
Secondary L2 Cache	15
Main Memory	15
Upgradable BIOS in Flash Memory	16
EIDE Subsystem	16
SMART Technology	16
Integrated Diskette/Tape Drive Controller	16
Integrated SVGA Subsystem	17
Integrated Audio Controller	17
ATI Multimedia Channel	17
Telephony Application Programming Interface	18
Chassis Intrusion Detection	18
Integrated Ethernet NIC Support (Optional)	18
Network Cable Requirements	19
Full Set of I/O Ports	19
UPS	19
Location of Major Components	19
Advanced Expansion Features	24
OptiPlex NX1 Computer’s Expansion-Card Slot	25
Low-Profile Computer’s Expansion-Card Slots	25
Midsize Computer’s Expansion-Card Slots	25
Mini Tower Computer’s Expansion-Card Slots	27
Upgrade Options	27
Microprocessor/L2 Cache Upgrades	27
Main Memory Expansion	28
Video-Memory Upgrade Option	28
Computer Service Information	28
Remote Management Support Features (Optional)	28
Online Documentation	28
System Diagnostics	29
System-Board Service Data	29
System Board	29
System Board Jumpers	30
Interrupt Assignments	31
DMA Channel Assignments	32
Hard-Disk Drive Service Information	32
Hard-Disk Drive for the Low-Profile Computer	33
Hard-Disk Drive for the Midsize Computer	33
Hard-Disk Drive for the Mini Tower Computer	34
Hard-Disk Drive for the OptiPlex NX1 Computer	34
Power-Supply Service Data	34
Pin Assignments for the DC Power Connectors	35
DC Power Distribution	36
System Power Supply for the OptiPlex NX1 Computer	41
OptiPlex NX1 Pin Assignments for the DC Power Connectors	42
DC Power Distribution for the OptiPlex NX1 Computer	43
Technical Specifications	45
Basic Troubleshooting	53
Initial User Contact	53
External Visual Inspection	54
Observing the Boot Routine	55
Internal Visual Inspection	56
Eliminating Resource Conflicts	57
Running the System Diagnostics	58
Server-Based Diagnostics	58
Hard-Disk–Based Diagnostics (OptiPlex NX1 Systems Only)	59
Diskette-Based Diagnostics	61
Connecting an External Diskette Drive to the OptiPlex NX1 Computer	61
Running the Diskette-Based Diagnostics	62
Getting Help	63
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	75
Eject, Power, and Reset Buttons	76
Front-Panel Inserts	77
Control Panel	78
Drives	79
Externally Accessible Drive Assemblies	79
3.5-Inch Diskette Drive Assembly	80
5.25-Inch Drive Assembly	81
Hard-Disk Drive Assembly	82
System Power Supply	83
Expansion Cards	84
Expansion-Card Cage	84
Expansion Card	85
Riser Board	86
System Board	87
System Board Components	88
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	114
Video Memory	115
Microprocessor	116
SEC Cartridge/Heat Sink Assembly	116
System Battery	117
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	140
Video Memory	141
Microprocessor	142
SEC Cartridge/Heat Sink Assembly	142
System Battery	143
Removing and Replacing Parts on the OptiPlex NX1 Net PC Chassis	145
Recommended Tools	145
Precautionary Measures	145
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	158
Video Memory	159
Microprocessor	160
SEC Cartridge/Heat Sink Assembly	160
System Battery	161
System Setup Program	163
System Setup Screens	164
Device List	169

Match case Limit results 1 per page

System Overview

1-29

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6\VWHP±3RZHU±6XSSO\±IRU±WKH±2SWL3OH[±1;²±

&RPSXWHU±

The OptiPlex NX1 computers have an 80-W computer power supply. The

power supply can operate from an AC power source of 115 VAC at 60 Hz or

230 VAC at 50 Hz. The system power supply provides the DC operating volt-

ages and currents listed in Table 1-5.

NOTE: The power supply produces DC voltages only under its loaded condi-

tion. Therefore, when you measure these voltages, the DC power input

connectors must be connected to their corresponding power input connectors

on the system board and hard-disk drive.

–12 VDC

power

management

and NIC logic

+3.3 VDC

POWER1

system

power supply

RTC/

NVRAM

+3.3 VDC

+5 VDC

+5 VFP

+12 VDC

–12 VDC

+5 VDC

–5 VDC

+12 VDC

–12 VDC

+5 VDC

–5 VDC

PSON#

+5 VFP

+5 VDC

–5 VDC

+12 VDC

PWRGOOD

PSON#

+5 VFP

+5 VDC

–5 VDC

+12 VDC

–12 VDC

+3 VDC

keyboard

controller

+5 VDC

+12 VDC

–12 VDC

+12 VDC

3.5-inch

diskette drive

battery

ISA1

through

ISA4

PCI1

through

PCI5

MICROPROCESSOR

PANEL

KYBD

MOUSE

DIMM_A

DIMM_B

main

memory

FAN

RISER

internal

hard-disk drive

optional

drive

riser board

system board

optional

drive

internal

hard-disk drive

processor

core regulator

POWER2

core VCC +2.1 to +3.5 VDC

USB

+3.3 VDC

optional

drive

+5 VFP

DIMM_C

NOTE: +5 VFP is routed to

the integrated NIC logic on

the system board and to P1

on the riser board.