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Dell
990
service manual
Models:
990
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103 pages
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Troubleshooting
Specifications
Install
Error codes
Memory allocation error
No timer tick interrupt
Maintenance
System Configuration
Power Button Problem
Reset failed
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Contents
Regulatory Model D05D Regulatory Type D05D001
Page
Contents
Power-Switch Cable
Chassis Intrusion Switch
Coin-Cell Battery
Speaker
System Setup
Power Supply
Power Supply Unit PSU Thermal Sensor
Troubleshooting
Decreasing available memory
Memory allocation error
No timer tick interrupt
Diskette read failure
Specifications
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Page
Working on Your Computer
Before Working Inside Your Computer
Recommended Tools
Turning Off Your Computer
After Working Inside Your Computer
Page
Removing the Cover
Installing The Cover
Cover
Follow the procedures in After Working Inside Your Computer
Front Bezel
Removing the Front Bezel
Installing The Front Bezel
Cards
Removing the Expansion Card
Page
Installing The Expansion Card
Page
Optical Drive
Removing the Optical Drive
Installing The Optical Drive
Hard Drive
Removing the Hard Drive
Page
Installing The Hard Drive
Page
Memory
Removing the Memory
Installing The Memory
Chassis Intrusion Switch
Removing the Chassis Intrusion Switch
Installing The Chassis Intrusion Switch
Speaker
Removing The Speaker
Installing The Speaker
Heat Sink
Removing The Heat Sink and Processor
Page
Installing The Heat Sink and Processor
Page
Coin-Cell Battery
Removing The Coin-Cell Battery
Installing The Coin-Cell Battery
Power-Switch Cable
Removing The Power-Switch Cable
Installing The Power-Switch Cable
Front Thermal Sensor
Removing The Front Thermal Sensor
Installing The Front Thermal Sensor
Chassis Fan
Removing The System Fan
Installing The System Fan
Follow the procedures in After Working Inside Your Computer
Page
Input/Output Panel
Removing The Input/Output Panel
Installing The Input/Output Panel
Remove the Input/Output panel
Power Supply
Removing The Power Supply
Page
Installing The Power Supply
Lift the power supply out of the computer
Page
System Board
Removing The System Board
Installing The System Board
Follow the procedures in After Working Inside Your Computer
Page
Power Supply Unit PSU Thermal Sensor
Removing The PSU Thermal Sensor
Installing The PSU Thermal Sensor
Boot Menu
System Setup
System Setup
Boot Menu Enhancements
Timing Key Sequences
Navigation
Beep Codes and Text Error Messages
System Setup Options
Technology
SATA-2, SATA-3, and LOM MAC Address
System Configuration
Video
Security
Allow Non-Admin Password Changes This option is
Performance
Power Management
Protector or if Auto Power is set to disabled
Enable F12 Boot menu enabled by default
Post Behavior
Image Server
Maintenance
Virtualization Support
Address is
System Logs
Setting is
255.255.255.255
Displays the Bios Progress event log
Clear Log
Page
Diagnostic Light Patterns
Troubleshooting
Diagnostic LEDs
Power Button Problem
Power Button
Steps
Power Button Problem Description
LED
If the problem persists, the system board is faulty
Troubleshooting Steps Re-seat the processor
Troubleshooting Steps
Your computer
Possible expansion card failure has occurred
Beep Codes
Code1-1-2
Code Cause DMA page register read/write failure Through
Cause
Code Cause
Code
Cause Keyboard Controller Test failure Code
Code Cause Cache test failure
Error Messages
Address mark not found
Bad error-correction code ECC on disk read
Alert! Security override Jumper is installed
Bad command or file name
Data error
Decreasing available memory
Diskette subsystem reset failed
Hard-disk drive configuration error
Diskette drive 0 seek failure
Hard-disk drive controller failure
Invalid configuration information-please run Setup program
Invalid Memory configuration, please populate DIMM1
Hard-disk drive failure
Memory allocation error
Memory size in Cmos invalid
No timer tick interrupt
No boot device available
No boot sector on hard-disk drive
Non-system disk or disk error
Seek error
Read fault
Reset failed
Requested sector not found
Unexpected interrupt in protected mode
Time-of-day not set-please run the System Setup program
Timer chip counter 2 failed
Write fault
Write fault on selected drive
\ is not accessible. The device is not ready
Page
Processor
Specifications
Technical Specifications
Type
System Information
Audio
Network
Expansion Bus
PCI
External Connectors
Drives
Factor Back Panel Ultra Small Form Factor Front Panel Video
Connector
System Board Connectors
Vary based on the graphics card
Small Form Factor Ultra Small Form Factor
Controls and Lights
Turned on and is functional.
Power system by
System power supply
Outlet
Environmental
Power Wattage Maximum Voltage Heat Dissipation
Physical Height Width Depth Weight
S71.04-1985
Storage Grms Maximum shock Operating 40 G 105 G Altitude
Airborne contaminant level
102
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