Dell Dimension 8400 Manuel d'utilisateur Page 1

Dell™Dimension™8400ServiceManual Before You Begin Opening the Computer Cover Technical Overview Specifications Advanced Troubleshooting System Set

Back to Contents Page  Removing and Installing Parts Dell™Dimension™8400ServiceManual Memory Cards Drives Hard Drive Front-Panel

 Addressing Memory With 4-GB Configurations Your computer supports a maximum of 4 GB of memory when you use four 1-GB DIMMs. Current operating syst

 5. Insert the module into the connector until the module snaps into position. If you insert the module correctly, the securing clips snap into the

If you are installing or replacing a card, follow the procedures in the next section. If you are removing but not replacing a PCI card, see "Re

 7. Before you lower the retention arm, ensure that: l The tops of all cards and filler brackets are flush with the alignment bar. l The notch

Removing a PCI Card  1. Follow the procedures in "Before You Begin."  2. Press the lever on the card retention arm and raise the reten

2. Press the lever on the card retention arm and raise the retention arm.  3. If you are installing a new card, remove the filler bracket to crea

 8. If you replaced a card that was already installed in the computer and you removed the top of the retention mechanism, you may reinstall the top

b. Connect the network cable to the add-in network adapter's connectors. Do not connect the network cable to the integrated connector on the bac

When you install a drive, you connect two cables—a DC power cable and a data cable—to the back of the drive and to the system board. Some drives may a

Back to Contents Page  Advanced Troubleshooting Dell™Dimension™8400ServiceManual Power Lights Diagnostic Lights Beep Codes System Me

 2. Press in on the tabs on each side of the drive and slide the drive up and out.  Installing a Hard Drive  1. Unpack the replacement hard d

 6. Check all connectors to be certain that they are properly cabled and firmly seated.  7. Close the computer cover.  8. Connect your compu

a. Disconnect the power and the data cable from the back of the first hard drive. b. Press in the two rail tabs and pull the first hard drive out

4. From the outside of the computer, pull the insert away from the computer's front panel.  5. Remove the insert from the insert frame by pre

 3. Press inward on the two tabs on the sides of the drive, slide the drive upward, and then remove it from the floppy-drive bay.  Installing

 8. Connect your computer and devices to their electrical outlets, and turn them on. See the documentation that came with the drive for instruction

Installing a CD/DVD Drive  1. If you are installing a new drive, unpack the drive and prepare it for installation. Check the documentation that acc

Airflow Shroud  Removing the Airflow Shroud   1. Follow the procedures in "Before You Begin."  2. Disconnect the cooling fan power

b. On the retention base locate the tab opposite the power supply. Press on the retention base tab until the heat sink pops up slightly. c. Pres

 5. To remove the processor from the socket, lift the processor vertically in one motion. Leave the release lever extended in the release positio

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

6. Pivot the socket release lever back toward the socket and snap it into place to secure the processor. If you installed a processor replacement ki

2. Open the computer cover.  3. Remove any components that restrict access to the system board.  4. Disconnect all cables from the system boar

9. Connect your computer and devices to electrical outlets, and turn them on. Power Supply  Removing the Power Supply   1. Follow the procedure

 7. Connect your computer and devices to electrical outlets, and turn them on. Battery  Replacing the Battery  A coin-cell battery maintains co

Back to Contents Page  Specifications Dell™Dimension™8400ServiceManual  Processor Processor type Intel®Pentium®4 with HT Technology  NOTE:

x16 slot bidirectional speed — 8 GB/s   PCI  connector three connector size 120 pins connector data width (maximum) 32 bits   PCI Express  conne

Back to Contents Page  orange light — A good connection exists between a 100-Mbps network and the computer. yellow light — A good connection exists b

Back to Contents Page  System Setup Dell™Dimension™8400ServiceManual Overview Entering System Setup System Setup Screens System Setu

NOTE: If you insert a boot device and restart the computer, this option appears in the system setup menu. To boot from a USB memory device, select the

Boot Sequence This feature allows you to change the boot sequence for devices.  Option Settings l Diskette Drive — The computer attempts to boot f

System Messages  Code  Cause 1-1-2 Microprocessor register failure 1-1-3 NVRAM 1-1-4 ROM BIOS checksum failure 1-2-1 Programmable interval timer 1

4. Press the spacebar to enable or disable a device (enabled devices have a checkmark).  5. Press plus (+) or minus (–) to move a selected device

a. Locate the 3-pin CMOS jumper (CLR CMOS) on the system board. b. Remove the jumper plug from pins 2 and 3. c. Place the jumper plug on pins 1

Back to Contents Page  Technical Overview Dell™Dimension™8400ServiceManual Inside Your Computer System Board Components Power Supply DC

Power Supply DC Connector Pin Assignments  DC Power Connector P1

 DC Power Connector P2  DC Power Connectors, P3 and P5  Pin Number  Signal name  Color  Wire Gauge 1 +3.3 VDC Orange 16-AWG 2 +3.3 VDC O

 DC Power Connector P4  DC Power Connector P6  DC Power Connector P7  DC Power Connectors, P8 and P9 2 COM Black 3 +5 VDC Red 4 COM Bl

 DC Power Connector P10 Back to Contents Page  1 +12 VB DC White 2 COM Black 3 COM Black 4 +5V DC Red  Pin Number  Signal Name  18-AWG Wire 1

Back to Contents Page Dell™Dimension™8400SystemsServiceManual Notes, Notices, and Cautions Abbreviations and Acronyms For a complete list of

Back to Contents Page  CMOS Time and Date Not Set Diskette Boot Failure Drive A or B is present but has failed the BIOS POST. Ensure that the drive i

Back to Contents Page  Before You Begin Dell™Dimension™8400ServiceManual Getting Started Recommended Tools Turning Off Your Computer 

 2. Disconnect any telephone or telecommunication lines from the computer.  3. Disconnect your computer and all attached devices from their elect

Back to Contents Page  Opening the Computer Cover Dell™Dimension™8400ServiceManual    1. Follow the procedures in "Before You Begin.&q

Back to Contents Page  Closing the Computer Cover Dell™Dimension™8400ServiceManual   1. Ensure that all cables are connected, and fold cable