Dell OptiPlex 755 Support Question
Dell OptiPlex 755 Support Question
Find answers below for this question about Dell OptiPlex 755.Need a Dell OptiPlex 755 manual? We have 3 online manuals for this item!
Question posted by printal on March 30th, 2014
What Does Dell Optiplex 755 Diagnostic Lights 1 3 4 Stand For
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Current Answers
Answer #1: Posted by DellJesse1 on March 31st, 2014 7:35 AM
DellJesse1
Member since:
April 19th, 2012 Points: 1,551,500
Member since:
April 19th, 2012 Points: 1,551,500
printal,
The diagnostic led indicators do not show an error for the led lights 134 lit up. You can verify the lights again and then click the link below to download the manual. Within the manual are all diagnostic indicators and their meaning.
Thank You,
Dell-Jesse1
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Related Dell OptiPlex 755 Manual Pages
Quick Reference
Guide - Page 4
... Views 48 Removing the Computer Cover 55 Inside Your Computer 56 Cable Cover (Optional 57
System Board Components 59 Jumper Settings 60
Solving Problems 61 Dell Diagnostics 61 System Lights 65 Diagnostic Lights 66 Beep Codes 70 Resolving Software and Hardware Incompatibilities 72 Restoring Your Operating System 73 Using Microsoft Windows System Restore . . . . 73 Using...
Quick Reference
Guide - Page 6
... User License Agreement
NOTE: This document is available as a PDF at support.dell.com.
Find It Here
• How to set up a printer
• How to troubleshoot and solve problems
• How to run the Dell Diagnostics • Error codes and diagnostic lights
NOTE: This document may be optional and may not ship with your...
Quick Reference
Guide - Page 17
... the back USB connectors for devices that typically remain connected, such as printers and keyboards.
5 LAN indicator light
This light indicates that you connect occasionally, such as joysticks or cameras, or for bootable USB devices (see "Diagnostic Lights" on page 66.
7 power button Press this button to turn off the computer by pressing the...
Quick Reference
Guide - Page 18
... and pwoer-saving mode, see "Power Problems" in a power-saving mode
• Blinking or solid amber - See "Diagnostic Lights" on page 66 for a description of speakers.
The computer is turned off.
• Steady green - This light flickers when the hard drive is in the User's Guide. The computer is receiving electrical power, but...
Quick Reference
Guide - Page 28
... slot provided near the bottom of your computer.
6 diagnostic lights Use the lights to help you press the power button the computer will perform an operating system shutdown.
4 Dell badge
This badge can be rotated to match the orientation of the badge.
5 power light
The power light illuminates and blinks or remains solid to turn on...
Quick Reference
Guide - Page 38
See "Turning Off Your Computer" on page 13 for more information, see "Diagnostic Lights" on page 66.
6 hard drive activity light
This light flickers when the hard drive is established.
5 diagnostic lights Use the lights to help you press the power button the computer will perform an operating system shutdown.
3 Dell badge
Can be rotated to turn on the...
Quick Reference
Guide - Page 51
... from overheating.
Insert the AC power adapter plug. Rotate this knob in a clockwise direction to remove the cover.
Back View
1
2
3
5
4
1 diagnostic lights
2 computer cover release knob
3 back panel connectors
4 power connector 5 vents
See "Diagnostic Lights" on page 52 for your computer. Quick Reference Guide
51
The vents help you troubleshoot problems with your computer.
Quick Reference
Guide - Page 53
... "Connecting a VGA Monitor" on page 53.
10 power connector Insert the AC power adapter plug.
11 diagnostic lights See "Diagnostic Lights" on page 66 for devices that can help you troubleshoot problems with your computer. A high volume of light codes that typically
(5)
remain connected, such as printers and keyboards.
8 serial connector Connect a serial device, such...
Quick Reference
Guide - Page 61
...troubleshooting information available for technical assistance.
Express Service Code
Service Tag
Dell Diagnostics
CAUTION: Before you if your computer does not perform as ...Dell Diagnostics
If you experience a problem with your computer. The real-time clock is being reset (jumpered temporarily).
Quick Reference Guide
61 For an example of the error, beep codes, or diagnostics light...
Quick Reference
Guide - Page 65
...
failure has occurred. incorrectly installed. Quick Reference Guide
65 On the desktop computer, a solid green light indicates a network connection. Blinks green
A configuration error exists. If the computer does not boot,
contact Dell for technical
assistance (see "Diagnostic Lights" on the system running the Dell Diagnostics from the Drivers and Utilities CD, remove the CD.
5 When the...
Quick Reference
Guide - Page 66
...
locks up during
POST
Check the diagnostic lights to see if the specific problem is identified (see "Diagnostic Lights" on page 66). identified (see "Contacting Dell" in the User's Guide). When the computer starts normally, the lights flash before booting to identify the problem.
Diagnostic Lights
CAUTION: Before you begin any of the lights help troubleshoot a problem, your computer...
Quick Reference
Guide - Page 67
... the processor (see Processor information for your computer (see "Installing Memory" in the User's Guide).
• If the problem persists, contact Dell (see "Installing Memory" in the User's Guide). The diagnostic lights are installed, remove the modules (see "Removing Memory" in the User's Guide), then reinstall one at a time) until you have identified...
Quick Reference
Guide - Page 83
...
B
beep codes, 70
C
CDs operating system, 9
computer beep codes, 70 restore to previous state, 73
cover opening, 22, 32, 43
D
Dell support site, 8 diagnostic lights, 65-66 diagnostics
beep codes, 70 lights, 65-66 documentation End User License Agreement, 6 ergonomics, 6 online, 8 Product Information Guide, 6 regulatory, 6 safety, 6
documentation (continued) User's Guide, 6 warranty, 6
drivers...
User's Guide - Page 14
... read 343 3D image quality is poor 344
Power Lights 344
System Lights 345
Diagnostic Lights 347
Beep Codes 350
System Messages 351
Dell Diagnostics 353 When to Use the Dell Diagnostics 353 Starting the Dell Diagnostics From Your Hard Drive . . . . . 353 Starting the Dell Diagnostics From the Drivers and Utilities CD (Optional 354 Dell Diagnostics Main Menu 355
Drivers 356
14
Contents
User's Guide - Page 165
... computer will perform an operating system shutdown.
3 Dell badge
Can be rotated to help you use the back USB connectors for devices that you troubleshoot a computer problem based on the diagnostic code.
See "Turning Off Your Computer" on page 347.
6 hard drive activity light This light flickers when the hard drive is recommended that...
User's Guide - Page 178
... a boot device menu that allows the user to enter a device for a 1000-Mb (1-Gb) operation
Activity light (on integrated network yellow blinking light adapter)
Diagnostic lights
four lights on the front panel (See "Dell Diagnostics" on page 353.)
Standby power light
AUX_PWR on state. blinking amber indicates a problem with an installed device; Key Combinations
or
or
If you...
User's Guide - Page 336
... then restart the computer. • Ensure that you are unable to use first. Contact Dell (see "Before Working Inside Your Computer" on page 21), reconnect the keyboard cable as...® Windows® XP and Microsoft Windows Vista® Operating Systems" on the setup diagram for bent or broken pins. See "Diagnostic Lights" on page 370). TU R N T H E C O M PU TE R O F F - TE ST T H ...
User's Guide - Page 346
... Resolution
Blinks green several A configuration error exists. Solid yellow
The Dell Diagnostics is running a If the Dell Diagnostics is identified (see "Contacting Dell" on page 370).
Also, check the diagnostic lights to see if the specific problem is identified (see "Diagnostic Lights" on page 347). Solid green power light and no video during POST
A problem was detected while the...
User's Guide - Page 347
... your computer).
• If available, install a working electrical outlet (see "Power Problems" on page 339).
• If the problem persists, contact Dell (see "Installing Memory" on page 370). The diagnostic lights are installed, remove the modules (see "Removing Memory" on page 316), then reinstall one at a time) until you begin any installed graphics...
User's Guide - Page 373
...-338-4400
NOTE: For Further regulatory information, see your authority to comply with the FCC regulations:
• Product name: Dell™ OptiPlex™ 755
• Model numbers: DCTR, DCNE, DCSM, DCCY
• Company name: Dell Inc.
The following measures:
• Reorient the receiving antenna.
• Relocate the system with the manufacturer's instruction manual, may...
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