Dell Precision 220 User Manual Page 68
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- TROUBLESHOOTING
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technical assistance.
Diagnostic LEDs
The power indicator light-emitting diode (LED) and the hard-disk drive LED on the front of the computer emit diagnostic codes that can help you
troubleshoot a system problem. Table 3 lists the codes for the diagnostic LEDs, probable causes, and suggested corrective actions.
Table 3. Diagnostic LED Codes
Back to Contents Page
CAUTION: Before servicing any components inside your computer, see "Safety First—For You and Your Computer."
Power LED Code
Hard-Disk Drive
LED Code
Cause
Action
Blinking yellow
Blank
System power supply
failure
See "Getting Help" for instructions on
obtaining technical assistance.
Blinking yellow
Solid green
Voltage regulator failure
on the system board.
See "Getting Help" for instructions on
obtaining technical assistance.
Solid yellow
N/A
A device on the system
board may be faulty or
is incorrectly installed.
Be sure that each microprocessor is
properly seated, remove all expansion
cards, and then reboot. If the system does
not boot, see "Getting Help" for
instructions on obtaining technical
assistance.
Solid green and a
beep code during
POST
N/A
A problem was
detected while the BIOS
was executing.
See Table 2 for instructions on diagnosing
the beep code.
Solid green power
indicator and no
beep code and no
video during POST
N/A
The monitor or the
graphics card may be
faulty.
See "Troubleshooting the Monitor." If the
monitor is operating properly and is
correctly connected, see "Getting Help" for
instructions on obtaining technical
assistance.
Solid green power
indicator and no
beep code but the
system locks up
during POST
N/A
An integrated system
board device may be
faulty.
See "Getting Help" for instructions on
obtaining technical assistance.
- Backing Up Your Files 2
- Basic Checks 2
- Look and Listen 3
- System Setup 3
- Replacing the Battery 4
- International Dialing Codes 6
- Americas Contact Numbers 7
- Europe Contact Numbers 9
- Overview 15
- Features 15
- Before You Start Testing 15
- Advanced Testing 16
- Installing an Expansion Card 23
- Removing an Expansion Card 25
- Troubleshooting the Keyboard 26
- Troubleshooting the Mouse 26
- Troubleshooting the Monitor 26
- Troubleshooting I/O Ports 27
- Back to Contents Page 29
- Help Overview 29
- Contacting Dell 29
- Installing SCSI Devices 35
- Technical Assistance 38
- Help Tools 38
- Problems With Your Order 39
- Product Information 39
- Before You Call 40
- Internal Views 44
- System Board Components 45
- System Board Jumpers 46
- System Board Labels 47
- Troubleshooting the Battery 52
- Troubleshooting Drives 55
- Hardware Features 56
- Software Features 57
- Manageability Features 57
- ENERGY STAR®Compliance 59
- Installing RIMMs 60
- Removing Modules 61
- Securing clips (2) 62
- System Messages 63
- System Beep Codes 66
- Warning Messages 67
- Diagnostics Messages 67
- Diagnostic LEDs 68
- Getting Started 73
- Controls and Indicators 75
- Chassis Intrusion 77
- Password." 81
- AC Power Recovery 82
- Asset Tag 82
- Auto Power On 82
- Boot Sequence 82
- CPU Speed 83
- Integrated Devices 83
- Keyboard NumLock 85
- PCI IRQ Assignment 85
- Remote Wake Up 86
- Report Keyboard Errors 86
- Second Processor 86
- System Data 87
- System Date 87
- System Memory 87
- System Security 87
- System Time 88
- ZIP Floppy Support 88
- Error Messages 90
- Input Errors 90
- Memory-Resident Programs 91
- Program Conflicts 91
- Memory Address Conflicts 91
- BIOS Recovery Utility 92
- Processor 93
- System Information 93
- Expansion Bus 94
- Key Combinations 95
- Physical 96
- Environmental 96
- Using System Setup 97
- System Setup Options 97
- Entering System Setup 98
- System Setup Screen 98
- System Setup Navigation Keys 98
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