Dell OptiPlex 170L Specifications Page 123
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Beep Codes
Your computer might emit a series of beeps during start-up if the monitor cannot display errors or problems. This series of beeps, called a beep code, identifies
a problem. One possible beep code (code 1-3-1) consists of one beep, a burst of three beeps, and then one beep. This beep code tells you that the computer
encountered a memory problem.
If your computer beeps during start-up:
1. Write down the beep code on the Diagnostics Checklist.
2. Run the Dell Diagnostics to identify a more serious cause.
3. Contact Dell for technical assistance.
green
green
green
yellow
A possible USB failure has
occurred.
l Reinstall all USB devices, check cable connections, and then restart the computer.
yellow
yellow
yellow
green
No memory modules are
detected.
l Reinstall all memory modules and restart the computer.
l To eliminate the possibility of a faulty memory connector, remove all memory modules, reinstall one
memory module (if the computer supports a single module), and then restart the computer. If the
computer starts normally, move the memory module to a different connector and restart the
computer. Continue until you have identified a faulty connector or reinstalled all modules without
error.
yellow
green
yellow
green
Memory modules are
detected, but a memory
configuration or compatibility
error exists.
l Ensure that no special memory module/memory connector placement requirements exist (see
"Memory" for more information).
l Verify that the memory modules that you are installing are compatible with your computer.
l If the problem persists, contact Dell.
yellow
green
green
green
Another failure has
occurred.
l Ensure that the cables are properly connected to the system board from all installed hard drives.
l Check the computer message that appears on your monitor screen.
l If the problem persists, contact Dell.
green
green
green
green
The computer is in a normal
operating condition after
POST.
l None.
Code
Cause
1-1-2
Processor register failure
1-1-3
NVRAM
1-1-4
ROM BIOS checksum failure
1-2-1
Programmable interval timer failure
1-2-2
DMA initialization failure
1-2-3
DMA page register read/write failure
1-3-1 through 2-4-4
Memory not being properly identified or used
3-1-1
Slave DMA register failure
3-1-2
Master DMA register failure
3-1-3
Master interrupt mask register failure
3-1-4
Slave interrupt mask register failure
- Notes, Notices, and Cautions 1
- Abbreviations and Acronyms 1
- Small Desktop Computer 1
- Mini-Tower Computer 1
- Advanced Troubleshooting 3
- Dell Diagnostics Main Menu 4
- Drivers 5
- Creating a Restore Point 7
- Reinstalling Windows XP 8
- Microsoft®Windows®XP 9
- Windows 2000 10
- Advanced Features 11
- Password Protection 12
- Typing Your System Password 13
- Setup Password 14
- System Setup 15
- Entering System Setup 16
- System Setup Screens 16
- Boot Sequence 17
- System Setup Options 18
- Booting to a USB Device 19
- Power Button 20
- Power Management 20
- Hyper-Threading 21
- Battery 22
- Before You Begin 24
- Cleaning Your Computer 26
- Chassis Speaker 28
- Removing the Chassis Speaker 29
- Operating System CD 33
- Glossary 34
- Getting Help 42
- AutoTech Service 43
- Problems With Your Order 44
- Product Information 44
- Before You Call 44
- Contacting Dell 45
- I/O Panel 53
- Memory 57
- Removing Memory 59
- Power Supply 60
- DC Power Connectors 62
- DC Power Connector P2 63
- DC Power Connector P5 63
- DC Power Connector P6 63
- DC Power Connector P7 63
- Main Power Connector 64
- 12-volt Power Connector 64
- Peripheral Power Connectors 64
- FCC Notices (U.S. Only) 66
- System Board 68
- Removing the Computer Cover 71
- Front View 72
- Back View 73
- Inside Your Computer 74
- System Board Components 75
- Opening the Computer Cover 82
- Front-Panel Inserts 86
- Installing a CD/DVD Drive 88
- Installing a Floppy Drive 90
- Installing Cards 100
- Removing Cards 101
- Control Panel 103
- Drives 105
- Hard Drive 106
- Installing a Hard Drive 107
- CD/DVD Drive 110
- Floppy Drive 114
- Back to Contents Page 117
- Processor 118
- Solving Problems 122
- Beep Codes 123
- Battery Problems 124
- Card Problems 124
- Drive Problems 125
- Dropped or Damaged Computer 126
- Error Messages 127
- General Problems 129
- Keyboard Problems 130
- Memory Problems 131
- Mouse Problems 131
- Network Problems 131
- Power Problems 132
- Printer Problems 132
- Sound and Speaker Problems 133
- System Board Problems 134
- Video and Monitor Problems 134
- If the screen is blank 135
- Specifications 136
- Warranty 140
- Adding User Accounts 142
- Fast User Switching 142
- Network Setup Wizard 143
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