Dell Precision T5400: 12 diagnostic lights (4) Use these lights to help you troubleshoot a computer
12 diagnostic lights (4) Use these lights to help you troubleshoot a computer: Dell Precision T5400
Table of contents
- Notes, Notices, and Cautions
- Contents
- Finding Information What Are You Looking For? Find It Here
- What Are You Looking For? Find It Here
- What Are You Looking For? Find It Here
- What Are You Looking For? Find It Here
- What Are You Looking For? Find It Here
- Setting Up Your Computer Changing Between Tower and Desktop Orientations Switching From Tower to Desktop Orientation Switching From Desktop to Tower Orientation
- Installing Your Computer in an Enclosure
- • If your enclosure has doors, ensure that they allow at least thirty percent airflow through the enclosure (front and back).
- Transferring Information to a New Computer Microsoft Windows XP
- Files and Settings Transfer Wizard (With the Operating System Disc)
- TRANSFER DATA TO THE DESTINATION COMPUTER Files and Settings Transfer Wizard (Without the Operating System Disc) CREATE A WIZARD DISK COPY DATA FROM THE SOURCE COMPUTER
- TRANSFER DATA TO THE DESTINATION COMPUTER Microsoft Windows Vista Power Protection Devices
- Surge Protectors Line Conditioners Uninterruptible Power Supplies
- About Your Computer Front View (Tower Orientation) 5 IEEE 1394 connector (optional)
- 12 diagnostic lights (4) Use these lights to help you troubleshoot a computer
- Back View (Tower Orientation)
- Back Panel Connectors (Tower Orientation) 5 link integrity light Green — A good connection exists between a 10-Mbps
- 10 USB 2.0 connectors (5)
- Front View (Desktop Orientation) 6 hard-drive activity light
- 12 diagnostic lights (4)
- Back View (Desktop Orientation)
- Cleaning Your Computer Computer, Keyboard, and Monitor Mouse (Non-Optical)
- Floppy Drive CDs and DVDs Troubleshooting Tools Power Lights
- • Eliminate interference. Some possible causes of interference are:
- Diagnostic Lights Diagnostic Light Codes During POST Light Pattern Problem Description Suggested Resolution
- Light Pattern Problem Description Suggested Resolution
- Light Pattern Problem Description Suggested Resolution
- Light Pattern Problem Description Suggested Resolution
- Beep Codes Code Cause Code Description Suggested Remedy
- Code Description Suggested Remedy System Messages
- Hardware Troubleshooter
- Dell Diagnostics Starting the Dell Diagnostics From Your Hard Drive
- Starting the Dell Diagnostics From the Drivers and Utilities Disc Dell Diagnostics Main Menu Option Function
- Option Function Tab Function
- Troubleshooting Battery Problems Drive Problems
- Optical Drive Problems Problems Writing to an Optical Drive
- Hard Drive Problems E-Mail, Modem, and Internet Problems
- RUN THE MODEM DIAGNOSTIC TOOL — VERIFY THAT THE MODEM IS COMMUNICATING WITH WINDOWS — ENSURE THAT YOU ARE CONNECTED TO THE INTERNET — Ensure that you have
- Error Messages
- IEEE 1394 Device Problems Keyboard Problems
- Lockups and Software Problems The computer does not start up The computer stops responding A program stops responding A program crashes repeatedly
- A program is designed for an earlier Windows operating system A solid blue screen appears Other software problems
- BACK UP YOUR FILES IMMEDIATELY Memory Problems Mouse Problems
- Network Problems
- Power Problems
- Printer Problems
- Sound and Speaker Problems No sound from speakers
- No sound from headphones Video and Monitor Problems The screen is blank
- CHECK THE MONITOR POWER LIGHT — The screen is difficult to read CHECK THE MONITOR CABLE CONNECTION — CHECK THE MONITOR POWER LIGHT —
- 3D image quality is poor Only part of the screen is readable
6 USB 2.0 connectors (2) Use the front USB connectors for devices that you
connect occasionally, such as flash memory keys or
cameras, or for bootable USB devices (see "System
Setup" in your User’s Guide for more information on
booting to a USB device).
Dell recommends that you use the back USB connectors for
devices that typically remain connected, such as printers
and keyboards.
7 Dell rotatable badge To rotate the Dell badge for tower-to-desktop conversion:
remove the
front panel ("Removing the Computer Cover"
in your User’s Guide
)
, turn it over, and rotate the plastic
handle behind the badge.
8 power button,
Press the power button to turn on the computer. The light in
power light
the center of this button indicates power state. See "Controls
and Lights" in your User’s Guide for more information.
NOTICE: To avoid losing data, do not use the power
button to turn off the computer. Instead, perform an
operating system shutdown.
9 headphone connector Use the headphone connector to attach headphones.
10 microphone connector Use the microphone connector to attach a personal
computer microphone for voice or musical input into
a sound or telephony program.
11 network link light The network link light is on when a good connection
exists between a 10-Mbps, 100-Mbps, or 1000-Mbps
(or 1-Gbps) network and the computer.
12 diagnostic lights (4) Use these lights to help you troubleshoot a computer
problem based on the diagnostic code. For more information,
see "Power Lights" on page 27.
Quick Reference Guide 19
