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Tools to Help Solve Problems: Dell Precision Workstation 470 and 670 Computers User's Guide
file:///T|/htdocs/systems/ws670/EN/ug_en/advtrbl.htm[3/20/2013 9:31:57 AM]
Solid green and a beep
code during POST
N/A A problem was detected while the
BIOS was executing.
See "Beep Codes" for instructions on diagnosing
the beep code. Also, check the diagnostic lights
to see if the specific problem is identified.
Solid green power light and
no beep code and no video
during POST
N/A The monitor or the graphics card
may be faulty or incorrectly installed.
Check the diagnostic lights to see if the specific
problem is identified. See "Video and Monitor
Problems."
Solid green power light and
no beep code but the
computer locks up during
POST
N/A An integrated system board device
may be faulty.
Check the diagnostic lights to see if the specific
problem is identified. If the problem is not
identified, contact Dell
for technical assistance.
Diagnostic Lights
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in
the Product Information Guide.
To help you troubleshoot a problem, your computer has four lights labeled "A," "B," "C," and "D" on the front panel. The lights
can be yellow, green, or off. When the computer starts normally, the lights flash. After the computer starts, all four lights
display solid green. If the computer malfunctions, the color and sequence of the lights identify the problem.
Diagnostic Light Codes Before POST
Light Pattern Problem Description Suggested Resolution
off
off
off
off
No electrical power is
supplied to the computer.
Connect the computer to an electrical outlet. Ensure that the front-
panel power light is on. If the power light is off, ensure that the
computer is connected to a working electrical outlet and then press
the power button.
If the problem is still not resolved, contact Dell
for technical
assistance.
yellow
off
off
off
The computer is in a
normal off condition; the
computer is connected to
an electrical outlet.
Press the power button to turn the computer on.
If the computer does not turn on, ensure that the front-panel
power light is on. If the power light is off, ensure that the computer
is connected to a working electrical outlet and then press the power
button.
If the problem is still not resolved, contact Dell
for technical
assistance.
yellow
yellow
off
off
The computer is in a
reduced power or "sleep"
state.
Use one of the appropriate methods to "wake up" the computer.
See "Advanced Features
."
If the problem is not resolved and you are trying to wake the
computer with a USB mouse or keyboard, substitute the mouse or
keyboard with a working PS/2 mouse or keyboard and then try to
wake the computer.
yellow
yellow
yellow
off
The BIOS is not executing. Ensure that the processor is seated correctly and restart the
computer.
If the problem is still not resolved, contact Dell
for technical
assistance.
off
yellow
off
off
A possible power supply or
power cable failure has
occurred.
Perform the procedure in "Power Problems
."
If the problem is still not resolved, contact Dell
for technical
assistance.
- User's Guide 1
- Finding Information 2
- Specifications 4
- Caring for Your Computer 9
- Front View 11
- Front View (Doors Open) 12
- Back View 13
- Inside Your Computer 16
- System Board Components 17
- Advanced Features 25
- Security 26
- Password Protection 27
- Assigning a System Password 28
- Typing Your System Password 28
- Admin Password 29
- System Setup 30
- System Setup Options 31
- Boot Sequence 35
- Clearing Forgotten Passwords 36
- Clearing CMOS Settings 37
- Hyper-Threading 37
- IEEE 1394a 38
- U320 SCSI Controller 38
- Power Management 38
- Copying CDs and DVDs 39
- Using Blank CDs and DVDs 40
- Helpful Tips 40
- Installing the Driver 42
- Features 42
- Using RAID Storage Manager 44
- Logical Devices 45
- Creating an Array 46
- Deleting an Array 47
- Rebuilding to a Hot-Spare 48
- Verifying an Array 48
- SATA Host RAID 49
- Configuring Drives 50
- Rebuilding Arrays 51
- Deleting Arrays 51
- Viewing Array Properties 52
- Using the Disk Utilities 53
- SCSI Host RAID 53
- Viewing Array 54
- Creating Arrays 55
- Creating RAID 1 Arrays 56
- Adding a Spare Drive 57
- Verifying Data Integrity 58
- Bootable Array 58
- Write Cache 59
- Removing and Replacing Parts 60
- Opening the Computer Cover 61
- Memory Overview 63
- Installing Memory 65
- Removing Memory 66
- Memory Fan and Shroud 67
- Overview 67
- Connecting Cables 68
- SCSI ID Numbers 69
- Hard Drive 70
- Removing a Hard Drive 71
- Installing a Hard Drive 72
- Floppy Drive (Optional) 74
- Removing a Floppy Drive 75
- Installing a Floppy Drive 75
- CD/DVD Drive 77
- Installing a CD/DVD Drive 78
- Removing the Drive Door 80
- Replacing the Drive Door 81
- Removing a CD/DVD Drive 93
- PCI Cards 97
- Removing a PCI Card 100
- PCI Express Cards 101
- Removing a PCI Express Card 104
- Processor Airflow Shroud 105
- Removing the Airflow Shroud 106
- Processor 108
- Installing the Processor 109
- Removing the Processor 111
- Replacing the Battery 114
- Installing a VRM 115
- Removing a VRM 116
- Control Panel 117
- Removing the Control Panel 118
- Front Panel 119
- I/O Panel 120
- Removing the I/O Panel 122
- Replacing the I/O Panel 123
- Removing the Power Supply 123
- Replacing the Power Supply 125
- System Board 127
- Removing the System Board 128
- Replacing the System Board 128
- Closing the Computer Cover 129
- Tools to Help Solve Problems 131
- Diagnostic Lights 132
- Beep Codes 135
- Error Messages 136
- Dell Diagnostics 141
- Dell Diagnostics Main Menu 142
- What Is a Driver? 143
- Identifying Drivers 143
- Manually Reinstalling Drivers 144
- Creating a Restore Point 145
- Enabling System Restore 146
- Windows XP 146
- Windows 2000 146
- Before You Begin 147
- Reinstalling Windows XP 147
- Windows XP Setup 148
- Solving Problems 150
- Drive Problems 151
- CD and DVD drive problems 152
- Hard drive problems 152
- IEEE 1394a Device Problems 154
- Keyboard Problems 154
- Lockups and Software Problems 155
- Memory Problems 156
- Mouse Problems 157
- Network Problems 158
- Power Problems 159
- Printer Problems 160
- Processor Problems 160
- Sound and Speaker Problems 161
- No sound from headphones 162
- Video and Monitor Problems 163
- Cleaning Your Computer 165
- CDs and DVDs 166
- Choosing a Wallpaper 168
- Choosing a Screen Saver 169
- Choosing a Desktop Theme 169
- Desktop Cleanup Wizard 170
- Internet Connection Firewall 171
- Adding User Accounts 172
- Fast User Switching 172
- Appendix 174
- AutoTech Service 175
- Technical Support Service 175
- Problems With Your Order 176
- Product Information 176
- Before You Call 176
- FCC Notices (U.S. Only) 188
- Glossary 190
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